DE102006060781B4 - Organic light source - Google Patents

Abstract

Lighting device (1000) with
- A first and a second illuminant (100), each comprising
- A substrate (1) having a first main surface (101) on which a first electrode (2) is applied,
- a second electrode (3), and
- An organic layer stack (4) within an active area (5) of the substrate (1) between the first and the second electrode (2, 3), wherein the organic layer stack (4) comprises at least one organic layer (401) which is suitable is to produce light, and
- a carrier, where
- the illuminants (100) are electrically and mechanically connected to one another,
- The lighting means (100) are mechanically and electrically connected to the carrier by means of a connection point (70), which is designed as a connection pin (71) or as a connection rail (84), and
- The connection point (70) is arranged on the second main surface (102) of the substrate (1) facing away from the first main surface (101) of the substrate (1) of the lighting means (100).

Description

The present application relates to an organic lighting means and a lighting device with such a lighting means. The present application also relates to an optical display device, emergency lighting, interior vehicle lighting, a piece of furniture, a building material, glazing and a display with such a light source or with a lighting device that has such a light source.

the US 6 554 443 B2 and US 6 626 554 B2 a light source which has light-emitting diodes on a semiconductor basis as light sources.

The pamphlet DE 10 2004 026 730 A1 discloses an area with electrical consumers, in particular illuminants.

The pamphlet DE 296 21 619 U1 discloses a device for lighting theater stages, TV studios or other rooms.

However, semiconductor-based light-emitting diodes are generally relatively expensive. In particular, the costs for a light-emitting diode based on semiconductor with its luminous surface increase. Large-area light-emitting diodes based on semiconductors are therefore particularly expensive and, due to their low profitability, are only rarely produced. Furthermore, semiconductor-based light-emitting diodes are generally neither flexible nor transparent to visible light.

One object of the present invention is, inter alia, to specify a lighting device with a light source.

Another object of the present invention is, inter alia, to specify a lighting device with a light source, the light of which can cause a variable color impression.

These objects are achieved by a lighting device according to independent claim 1.

• - einem ersten und einem zweiten Leuchtmitteln (100), jeweils umfassend
  • - ein Substrat (1) mit einer ersten Hauptfläche (101), auf die eine erste Elektrode (2) aufgebracht ist,
  • - eine zweite Elektrode (3), und
  • - einen organischen Schichtstapel (4) innerhalb eines aktiven Bereiches (5) des Substrates (1) zwischen der ersten und der zweiten Elektrode (3), wobei der organische Schichtstapel (4) mindestens eine organische Schicht (401) umfasst, die geeignet ist, Licht zu erzeugen, und
• - einem Träger, wobei
• - die Leuchtmittel (100) elektrisch und mechanisch miteinander verbunden sind,
• - die Leuchtmittel (100) mittels einer Anschlussstelle (70), die als Anschlussstift (71) oder als Anschlussschiene (84) ausgeführt ist, mechanisch und elektrisch mit dem Träger verbunden sind, und
• - die Anschlussstelle (70) an der, der ersten Hauptfläche (101) des Substrats (1) der Leuchtmittel (100) abgewandten, zweiten Hauptfläche (102) des Substrats (1) angeordnet ist.

The invention relates to a lighting device with

• - a first and a second light source ( 100 ), each comprehensive
  • - a substrate ( 1 ) with a first main area ( 101 ) on which a first electrode ( 2 ) is applied,
  • - a second electrode ( 3 ), and
  • - an organic layer stack ( 4th ) within an active area ( 5 ) of the substrate ( 1 ) between the first and the second electrode ( 3 ), where the organic layer stack ( 4th ) at least one organic layer ( 401 ) that is capable of generating light, and
• - a carrier, where
• - the bulbs ( 100 ) are electrically and mechanically connected to each other,
• - the bulbs ( 100 ) by means of a connection point ( 70 ), which is used as a connector pin ( 71 ) or as a connection rail ( 84 ) is carried out, are mechanically and electrically connected to the carrier, and
• - the junction ( 70 ) on the, the first main surface ( 101 ) of the substrate ( 1 ) the illuminant ( 100 ) facing away, second main surface ( 102 ) of the substrate ( 1 ) is arranged.

• - ein Substrat mit einer ersten Hauptfläche, auf die eine erste Elektrode aufgebracht ist,
• - eine zweite Elektrode, und
• - einen organischen Schichtstapel innerhalb eines aktiven Bereiches des Substrates zwischen der ersten und der zweiten Elektrode, wobei der organische Schichtstapel mindestens eine organische Schicht umfasst, die geeignet ist, Licht zu erzeugen.

According to at least one embodiment of the lighting means, a lighting means comprises in particular:

• - A substrate with a first main surface on which a first electrode is applied,
• - a second electrode, and
• an organic layer stack within an active region of the substrate between the first and the second electrode, the organic layer stack comprising at least one organic layer which is suitable for generating light.

The organic layers of the organic layer stack can have low molecular weight materials (small molecules) or polymeric materials. Low molecular weight materials are usually applied using vacuum processes such as evaporation, while polymer materials can be applied using solvent-based processes such as doctor blades, spin-coating or printing processes.

One of the electrodes generally serves as an anode, which injects holes into the organic layer stack, while the other electrode serves as a cathode, which impresses electrons into the organic layer stack. The anode preferably has a material that has a high work function for electrons, such as, for example, indium tin oxide (ITO).

The cathode, on the other hand, preferably has a material that has a low work function for electrons, such as, for example, alkali or alkaline earth metals. Since such materials are usually very sensitive to atmospheric gases - such as oxygen and moisture - can the cathode, in addition to a layer of such a material with a low work function, comprise one or more further layers that are significantly less sensitive to environmental influences, such as, for example, silver, aluminum or platinum layers. The other layers encapsulate the layer with the low work function for electrons.

In addition to the at least one layer which is suitable for generating light, the organic layer stack can comprise further organic layers, such as, for example, a hole-injecting layer, a hole-conducting layer, an electron-injecting layer and an electron-conducting layer.

The hole-conducting layer and the hole-injecting layer are preferably located on the side of the organic layer stack facing the anode, while the electron-conducting and electron-injecting layers are preferably located on the side of the organic layer stack facing the cathode. The organic layer which is suitable for generating light is in this case preferably arranged between the hole-conducting layer and the hole-injecting layer on the one hand and the electron-conducting layer and the electron-injecting layer on the other side. As a rule, the organic materials are translucent, in particular for light emitted by the organic layer stack.

• - Pedot:PSS
• - F4TCNQ (Tetrafluorotetracyano-chinodimethan), p-dotiert
• - NHT-5 mit NDP-2.

For example, the hole-injecting layer contains or consists of at least one of the following materials:

• - Pedot: PSS
• - F4TCNQ (tetrafluorotetracyano-quinodimethane), p-doped
• - NHT-5 with NDP-2.

• - aNPD=aNPB= 4,4'-bis[N-(1-naphtyl)-N-phenyl-amino] biphenyl
• - 1-TNATA = 4,4',4''-Tris(N-(naphth-1-yl)-N-phenyl-amino)triphenylamin
• - MTDATA = 4,4',4''-Tris(N-3methylphenyl-N-phenyl-amino)triphenylamin
• - TPD = N,N'-diphenyl-N,N'-(3-methylphenyl)-1,1'-biphenyl-4,4'-diamin
• - spTAD = 2,2',7,7'-diphenylamino-spiro-9,9'-biflouren.

For example, the hole-conducting layer contains or consists of at least one of the following materials:

• aNPD = aNPB = 4,4'-bis [N- (1-naphthyl) -N-phenyl-amino] biphenyl
• - 1-TNATA = 4,4 ', 4 "- Tris (N- (naphth-1-yl) -N-phenyl-amino) triphenylamine
• - MTDATA = 4,4 ', 4 "- Tris (N-3methylphenyl-N-phenyl-amino) triphenylamine
• - TPD = N, N'-diphenyl-N, N '- (3-methylphenyl) -1,1'-biphenyl-4,4'-diamine
• - spTAD = 2,2 ', 7,7'-diphenylamino-spiro-9,9'-biflourene.

• - Alq3 = Tris(8-hydroxychinolin)aluminium
• - BAlq = Bis-(2-methyl-8-chinolinolate)-4-(phenylphenolato) aluminium
• - TPBi = 1,3,5-Tris-(1-phenyl-1H-benzimidazol-2-yl)-benzol.

For example, the electron-conducting layer contains or consists of at least one of the following materials:

• - Alq3 = tris (8-hydroxyquinoline) aluminum
• - BAlq = bis (2-methyl-8-quinolinolate) -4- (phenylphenolato) aluminum
• - TPBi = 1,3,5-tris- (1-phenyl-1H-benzimidazol-2-yl) -benzene.

• - LiF, NaF
• - Cs2CO3
• - Ba
• - NET-5 mit NDN-1.

For example, the electron injecting layer contains or consists of at least one of the following materials:

• - LiF, NaF
• - Cs2CO3
• - Ba
• - NET-5 with NDN-1.

The illuminant usually has two main surfaces that are opposite one another. The main surface of the illuminant facing away from the substrate is referred to below as the “top” of the illuminant, while the main surface opposite the upper side of the illuminant is called the “underside” of the illuminant.

The light source emits a light generated in the organic layer stack either through its lower side or through its upper side or through the lower side and upper side. In any case, the elements of the luminous means that the light generated in the organic layer stack traverses on the way to the respective light-emitting side - top or bottom - of the luminous means must be permeable to the light generated by the organic layer stack. If it is provided that the light generated in the organic layer stack is emitted from the bottom and top of the lighting means, all elements of the lighting means, in particular the electrodes, as well as an encapsulation and the substrate must be transparent to the light generated by the organic layer stack be. In the present case, an element is also referred to as “translucent” if it is designed to be at least transparent to the light generated by the organic layer stack.

In accordance with at least one embodiment of the luminous means, the first electrode is permeable to light emitted by the organic layer stack during operation.

If only the first electrode is permeable to light generated by the organic layer stack during operation, while the second electrode is not, provision is generally made for the light to be emitted through the underside of the illuminant. In this case, therefore, at least the substrate is also preferably designed to be permeable to the light generated by the organic layer stack.

For example, glass or plastics, such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polycarbonate (PC), polyimide, are suitable as the material for a substrate that is transparent to the light emitted by the organic layer stack (PI), polysulfone (PSO), polyphenylene ether sulfone (PES), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS) and polymethyl methacrylate (PMMA), polyamide (PA), polyurethane (PUR), as well as Rubbers.

Furthermore, a laminate made of a glass and at least one of the plastics listed above is suitable as a substrate which is designed to be transparent to the light emitted by the organic layer stack.

In accordance with at least one further embodiment of the luminous means, the second electrode is permeable to light emitted by the organic layer stack during operation. If only the second electrode is permeable to a light generated by the organic layer stack during operation, but the first electrode is not, provision is generally made for the light to be emitted through the top of the illuminant. In this case, therefore, the elements between the second electrode and the upper side - for example an encapsulation - are preferably also designed to be permeable to the light generated by the organic layer stack.

According to at least one particularly preferred embodiment of the luminous means, both electrodes are designed to be permeable to the light generated by the layer stack. In this embodiment, the lighting means is generally provided to be transparent to the light emitted by the organic layer stack. As already mentioned above, in this case the other elements of the illuminant that the light passes through on the way to the top or bottom of the illuminant, in particular the substrate and an encapsulation, are designed to be transparent to the light emitted by the organic layer stack.

In accordance with at least one embodiment, at least one of the electrodes has a transparent conductive oxide, a metal or a conductive organic material or consists of such a material.

Transparent conductive oxides (transparent conductive oxides, “TCO” for short) are conductive materials, usually metal oxides such as zinc oxide, tin oxide, cadmium oxide, titanium oxide, indium oxide or indium tin oxide (ITO), which are permeable to visible light. They are therefore particularly suitable for being used for electrodes which are designed to be transparent to the light emitted by the organic layer stack. ITO, for example, is suitable as the anode material. In addition to binary metal oxygen compounds _{such as ZnO, SnO 2} or In ₂ O ₃ , ternary metal oxygen compounds such as ZnO: Al (ZAO), Zn ₂ SnO _{4 , CdSnO 3} , ZnSnO ₃ , MgIn ₂ O ₄ , GaInO ₃ , Zn _{2 also belong} In ₂ O ₅ or In ₄ Sn ₃ O ₁₂ or mixtures of different transparent conductive oxides belonging to the group of TCOs. Furthermore, the TCOs do not necessarily correspond to a stoichiometric composition and can also be p- or n-doped.

Alkali or alkaline earth metals, for example, can be used as the metal for the cathode. The TCO materials given above are also suitable for forming the cathode.

The electrode can, for example, have a metallic layer or consist of such a layer. If the electrode that has the metallic layer or consists of such a layer is to be made permeable to the light emitted by the organic layer stack, then the metallic layer must be made sufficiently thin. The thickness of such a semitransparent metallic layer is preferably between 1 nm and 100 nm, including the limits.

A suitable organic conductive material for an electrode is, for example, PEDOT: PSS, which is particularly suitable for the anode. Other suitable organic conductive materials include polythiophenes or pentacene.

Organic materials are usually transparent to visible light. For this reason, an electrode that comprises or consists of organic conductive material is generally also permeable to the light emitted by the organic layer stack.

According to at least one embodiment of the lighting means, at least one of the electrodes has electrically conductive tracks. The electrically conductive tracks preferably have a metal or consist of such a metal. The electrical tracks are particularly preferably designed to be relatively thick, for example in comparison with a semitransparent metallic layer described above. The thickness of the metallic tracks is preferably at most 1.5 μm. Such thick electrically conductive tracks generally have good electrical conductivity, so that they are particularly well suited for impressing charge carriers in the organic layer stack. Furthermore, the metallic tracks are preferably designed in such a way that they only fill a small part of the area of the electrode comprising them. For example, the electrically conductive tracks are designed as a grid that is used for that of the organic layer stack emitted light is permeable. In this way, with the aid of the electrically conductive tracks, an electrode that is permeable to the light emitted by the organic layer stack can be created, which furthermore advantageously allows good charge carrier impressions in the organic layer stack.

The proportion of metallic tracks in the total electrode area is preferably a maximum of 25%, preferably a maximum of 10%, particularly preferably a maximum of 5%. The metallic tracks are then no longer or only barely perceptible to a viewer.

The electrically conductive tracks particularly preferably have a multilayer structure. Such a multi-layer structure can have several metallic layers, for example. The multilayer structure preferably comprises or consists of three metallic layers, of which the two outer layers serve as protective layers for the middle layer, for example against corrosion. The middle layer of the multilayer structure can for example comprise or consist of aluminum, while the two outer layers can comprise chromium, molybdenum, copper or silver or can consist of one of these materials.

The multilayer structure has a thickness of preferably at least 50 nm and at most 100 nm.

The materials mentioned are particularly suitable for electrodes that are rather poorly conductive. For example for electrodes that contain or consist of a TCO. In principle, the materials are suitable for the anode and cathode.

In accordance with at least one embodiment of the luminous means, the organic layer stack comprises a doped organic layer with a dopant, which is arranged between the at least one organic layer suitable for generating light and one of the electrodes. The doped organic layer particularly preferably forms an outermost layer of the organic layer stack, which particularly preferably forms a common interface with the electrode facing in each case. The doped organic layer can be an n-doped layer or a p-doped layer. If the doped layer is arranged in such a way that it points to the cathode or is adjacent to the cathode, it is usually an n-doped layer. If, on the other hand, the doped layer is arranged in such a way that it points to the anode or is adjacent to it, then it is generally a p-doped layer.

The dopant of the doped layer is preferably the largest possible atoms or molecules which, in the case of an n-dopant, are suitable for emitting electrons and, in the case of a p-dopant, are suitable for emitting holes. Furthermore, the dopant preferably has a low diffusion constant within the organic layer stack, as is usually the case, for example, with large atoms or molecules.

On the one hand, the doping advantageously increases the conductivity of the doped organic layer and, in the case of an n-doped layer adjoining the cathode, leads to better injection of electrons from the cathode into the organic layer stack or, in the case of a p-doped layer adjoining the anode for better hole injection from the anode into the organic layer stack. Cesium, barium and lithium fluoride are preferably used as n-dopants. The following materials, for example, are suitable as p-dopant: F4TCNQ, HIL from Mitsubishi (MCC-PC1.020).

According to at least one embodiment of the lighting means, the active area is arranged within an encapsulation. Since the organic materials of the organic layer stack and often also electrode materials, in particular materials of the electron injecting cathode, are reactive to atmospheric gases, such as moisture and oxygen, it is usually particularly important for the service life of the illuminant to be good against oxygen and moisture as well other atmospheric gases to be sealed off, usually with the help of an encapsulation. In particular, the active area, which includes the organic layer stack and the electrodes, generally has to be protected here.

A cap, for example, which has a cavity in the area of the active layer stack and which is mounted on the substrate within a fastening area of the substrate surrounding the active area, for example by gluing, can serve as the encapsulation. The cavity of the cap preferably forms a cavity above the active region in which the organic layer stack and the two electrodes are arranged. Furthermore, the bottom of the cavity of the cap is preferably not in direct contact with the second electrode on the organic layer stack.

Furthermore, a plate can also serve as the encapsulation, which plate is connected to the substrate within a fastening area surrounding the active area, for example by gluing. Such a plate can be arranged in direct contact with the second electrode. For example, the plate can be attached to the second electrode by means of an adhesive layer.

In order to generate a distance between the cap or the plate in such a way that the cap or the plate is not in direct contact with the second electrode, the active area contains spacers according to one embodiment. The spacers can, for example, be spherical particles which are arranged on the organic layer stack or the second electrode.

• - beispielsweise durch Kleben. Eine solche Folie kann in direktem Kontakt mit der zweiten Elektrode angeordnet sein. Beispielsweise kann die Folie mittels einer Klebstoffschicht auf der zweiten Elektrode befestigt sein.

Furthermore, a film can also serve as the encapsulation. The film can be connected to the substrate within a fastening area of the substrate surrounding the active area

• - for example by gluing. Such a film can be arranged in direct contact with the second electrode. For example, the film can be attached to the second electrode by means of an adhesive layer.

In order to generate a distance between the film and the second electrode or the organic layer stack in such a way that the film is not in direct contact with the second electrode, according to one embodiment the active region contains spacers. The spacers can, for example, be spherical particles which are arranged on the organic layer stack or the second electrode.

The film is formed, for example, from a transparent plastic or a glass. The film preferably has a thickness of at most 1 mm, particularly preferably at most 0.5 mm.

Furthermore, a laminate which comprises at least one layer made of a glass, to which at least one layer made of a plastic is applied, can also serve as the encapsulation. The glass layer is preferably covered by a plastic layer on each of its two main surfaces. The laminate is then a plastic-glass-plastic laminate.

The laminate can be connected to the substrate within a fastening area surrounding the active area, for example by gluing. Such a laminate can be arranged in direct contact with the second electrode. For example, the laminate can be attached to the second electrode by means of an adhesive layer.

In order to generate a distance between the laminate and the second electrode or the organic layer stack in such a way that the laminate is not in direct contact with the second electrode, according to one embodiment the active region contains spacers. The spacers can, for example, be spherical particles which are arranged on the organic layer stack or the second electrode.

In accordance with at least one embodiment, the encapsulation is formed by thin-film encapsulation. The thin-film encapsulation has at least one barrier layer. The barrier layer is provided to protect the organic layer stack and sensitive electrode materials from the penetration of harmful substances, such as moisture and oxygen.

A thin-film encapsulation furthermore comprises at least one thin-film layer, such as the barrier layer, which is produced by means of a thin-film process such as sputtering, evaporation and plasma-assisted CVD (short for "chemical vapor deposition"), ALD (short for "atomic layer deposition"), MOVPE ( short for "metal organic vapor phase epitaxy"), flash evaporation, and / or laser ablation is applied. Such thin-film layers preferably have a thickness between 0.5 and 5 μm, including the limits.

A thin-film encapsulation can for example be applied directly to the second electrode. A thin-film encapsulation usually offers the advantage of being able to be made particularly thin and space-saving in comparison with a cap or a plate.

In accordance with at least one embodiment, the barrier layer contains or consists of one of the following materials: silicon oxide, silicon nitride. These materials are particularly suitable for forming a barrier against external influences, such as, for example, the penetration of oxygen and moisture.

According to at least one embodiment, the thin-film encapsulation comprises a plurality of alternating barrier layers, with at least two barrier layers that differ in terms of their material composition being arranged in a regular sequence. In other words, the thin-film encapsulation in this embodiment comprises first and second barrier layers, the material composition of the first barrier layers being different from the material composition of the second barrier layers. The first barrier layers can, for example, comprise silicon oxide or consist of this material, and the second barrier layers can, for example, comprise silicon nitride or consist of this material. The first and the second barrier layers are furthermore arranged alternately with regard to their material composition.

Such an alternating layer sequence of barrier layers within the thin-film encapsulation offers the advantage that the thin-film encapsulation is made particularly tight. This is usually due to the fact that pinholes - that is, small holes - that can arise in the respective barrier layer when the respective barrier layer is applied, can be covered by the overlying barrier layer or can even be filled with its material. Furthermore, the probability that a pinhole from one barrier layer will establish a continuous connection with a pinhole from the adjacent barrier layer is extremely low. This applies in particular to barrier layers which are arranged alternately with regard to their material composition.

Particularly preferably, one of the alternating barrier layers has silicon oxide and the other alternating barrier layer has silicon nitride.

According to at least one further embodiment, the thin-film encapsulation comprises at least one polymer intermediate layer which is arranged between two barrier layers.

For the polymer intermediate layer, for example, multicomponent resin systems are suitable, which are vapor-deposited as monomers and are deposited in liquid form. This achieves a high level of planarity in the polymer intermediate layer. The deposited layer is then crosslinked by means of UV radiation. The task of the polymer intermediate layer is the planarization in the thin-film encapsulation in order to prevent pinholes from lying on top of one another in the inorganic alternating barrier layers. This lowers the water and oxygen permeability of the thin-film encapsulation.

The thickness of the polymer intermediate layer can preferably be between 50 and 100 nm, including the limits. The polymer intermediate layer is particularly preferably light-permeable if a top emitter is present or if transparency of the luminous means is required.

The thin-film encapsulation particularly preferably comprises a protective lacquer layer as the outermost layer. The protective lacquer layer can be applied to the thin-film encapsulation, for example, by means of a spray method with a mask process.

Alternatively, for example, an epoxy resin film can be glued onto the thin-film encapsulation as a protective lacquer layer. In this case, the protective lacquer layer also contributes in particular to water tightness. A thin glass can be laminated onto the epoxy resin film, which further improves the watertightness.

According to a further embodiment, an adhesion-promoting layer is arranged between the thin-film encapsulation and the second electrode, which layer is preferably likewise a thin-film layer. The task of the adhesion-promoting layer is to improve the adhesion of the thin-film encapsulation to the second electrode or to another layer that may be applied to the second electrode. For this purpose, the adhesion-promoting layer has, for example, sulfur and / or nitrogen atoms or sulfur and / or nitrogen compounds. It is also possible for the adhesion-promoting layer to contain aluminum oxide, for example, or to consist of aluminum oxide.

According to at least one further embodiment, an organic planarization layer is arranged between the second electrode and the thin-film encapsulation.

For the organic planarization layer, for example, multi-component resin systems are suitable, which are vapor-deposited as monomers and are deposited in liquid form. This achieves a high level of planarity in the organic planarization layer. The deposited layer is then crosslinked by means of UV radiation. The task of the organic planarization layer is the planarization in the thin-film encapsulation in order to prevent pinholes from lying on top of one another in the inorganic alternating barrier layers. This lowers the water and oxygen permeability of the thin-film encapsulation. The thickness of the organic planarization layer can preferably be between 50 and 100 nm, including the limits.

If an adhesion-promoting layer is arranged between the second electrode and the thin-film encapsulation, the organic planarization layer is preferably arranged between the adhesion-promoting layer and the second electrode, the adhesion-promoting layer being intended to improve the adhesion between the planarization layer and the thin-film encapsulation.

The organic planarization layer can, for example, have scattering centers such as diffuser particles, for example silica spheres. In addition to silica spheres, other translucent materials that have a different refractive index than the surrounding matrix, such as glass spheres, are also suitable.

The diffuser particles are intended to scatter light; for example, lateral structures of the OLED layer structure - which can occur due to the electrode design, for example - are to be blurred so that they are more homogeneous for the viewer Impression is created. Furthermore, the emission characteristics can be influenced by the light scattering.

The diffuser particles preferably have a diameter of at least 0.5 to at most 5 μm. The thickness of the surrounding layers is preferably adapted accordingly so that the diffuser particles are embedded in the layers.

If a luminous means is to be created that is essentially transparent to the light emitted by the organic layer stack during operation or a luminous means that emits light from its upper side, the encapsulation is preferably also designed to be transparent to the light emitted by the luminous means during operation.

According to at least one embodiment, the encapsulation has glass or consists of glass. Such an encapsulation is generally permeable to the light emitted by the organic layer stack. In particular, a glass cap or a glass plate can be used as the encapsulation, which is permeable to the light generated by the organic layer stack.

In accordance with at least one embodiment, the organic planarization layer contains a luminescence conversion material.

The luminescence conversion material, for example, partially converts blue light into yellow light, which then creates a white mixed light that is emitted by the illuminant. Embedding the luminescence conversion material in the planarization layer or other functional layers such as the encapsulation or the substrate has proven to be particularly advantageous because it allows process steps to be saved during manufacture. This makes production particularly inexpensive.

Luminescence conversion materials are materials that absorb incident light of a first wavelength range and emit light of a second wavelength range different from the first, which as a rule comprises longer wavelengths than the first wavelength range.

Organic materials such as perylene phosphors can be used as luminescence conversion materials. Other organic materials, which can also be used, for example, for dye lasers in the corresponding wavelength range, are suitable as luminescence conversion materials.

In addition, luminescence conversion materials whose molecules contain an aromatic system and preferably conjugated double bonds are suitable. The basic structure of these luminescence conversion materials is formed, for example, from chromene, xanthene, coumarin, thioindole and / or benzene.

The following materials, for example, are particularly suitable: Rhodamine 6G, DCM = 4- (dicyanomethylene) -2-methyl-6- (p-dimethylamino-styryl) -4H-pyran.

In particular, molecules with an abnormal Stokes shift are desired, which causes a reduced or no overlap of the regions of the luminescence and the stimulating radiation. So-called triplet emitters are also suitable, since there is no overlap between stimulating radiation and luminescence. Another positive effect with triplet emitters is that absorption losses are avoided, for example rhodamine B is particularly suitable here.

Furthermore, the following inorganic materials are also suitable for use as luminescence conversion materials: garnets doped with rare earth metals, alkaline earth sulfides doped with rare earth metals, thiogallates doped with rare earth metals, aluminates doped with rare earth metals, with rare earth metals Earth-doped orthosilicates, chlorosilicates doped with rare earth metals, alkaline earth silicon nitrides doped with rare earth metals, oxynitrides doped with rare earth metals and aluminum oxynitrides doped with rare earth metals.

According to at least one further embodiment, the lighting means comprises a getter material. The getter material is advantageously suitable for binding moisture and / or oxygen. BaO, CaO, zeolite, Al-alkoxy compounds and barium, for example, can serve as getter materials.

The getter material can be arranged, for example, within the active area. Furthermore, the getter material can alternatively also be arranged outside the active area. The getter material can, for example, enclose the active region and be arranged approximately in a ring around the active region between the substrate and the encapsulation. In this way, the penetration of harmful substances through the getter material can be avoided particularly effectively.

Furthermore, when a cap or a plate is used for encapsulation, a getter material can also be applied to the side of the cap or the plate facing the active layer stack. If a light source is to be produced that is essentially used for the organic If the light generated by the layer stack is permeable, then the getter material is also preferably permeable to the light generated by the organic layer stack. Al-alkoxy compounds, for example, are suitable as getter material for this purpose.

If the illuminant comprises an encapsulation which prevents harmful substances from penetrating into the illuminant, as is the case, for example, with thin-film encapsulation, the illuminant is preferably free of any getter material.

In accordance with at least one embodiment, the lighting means comprises an electrical lead on the substrate, which connects one of the electrodes and a connection point, which is preferably located outside the active area, in an electrically conductive manner. The lighting means is preferably electrically contacted via the connection point, for example with the aid of a plug.

In accordance with at least one embodiment, the electrical supply line is designed to be permeable to the light emitted by the layer stack. Such a supply line is particularly suitable for being used in a luminous means which is designed to be completely transparent to the light emitted by the layer stack.

The electrical supply line can contain or consist of a metal, for example. If the electrical supply line is to be designed to be permeable to the light emitted by the layer stack, the metal in this case is applied so thinly that a semitransparent metal layer is produced which is permeable to light from the organic layer stack.

Furthermore, the electrical supply line of the lighting means can also contain a transparent conductive oxide or consist of one. Since transparent conductive oxides are permeable to visible light, such an electrical lead is generally also permeable to the light emitted by the layer stack and preferably to external visible light.

In accordance with at least one embodiment, the luminous means is designed to be essentially permeable to the light generated by the organic layer stack. In this case, the lighting means is provided to emit the light generated by the organic layer stack from its upper side and from its lower side. Furthermore, the lighting means in this case is preferably designed such that it is well permeable to visible external light when switched off and does not include any elements that absorb or reflect large proportions of visible light. In this case, the light source is difficult to perceive for an observer when it is switched off. That is to say, the lighting means is then preferably designed to be transparent and not diffusely scattering.

If the illuminant is permeable to the light emitted by the organic layer stack, the elements of the illuminant, such as the organic layer stack, the electrodes, the substrate, the encapsulation, possibly the getter material and the leads, are also permeable to the light generated by the organic layer stack , particularly preferably transparent to visible light.

According to at least one embodiment of the lighting means, window glazing serves as the substrate. This can be advantageous in particular when the luminous means is designed to be permeable to the light generated by the organic layer stack.

A light source that is transparent to the light generated by the organic layer stack can be integrated in a window, a ceiling element, a windshield, a door, a room divider, a glass block, a wall or a partition and, for example, in buildings, furniture, Motor vehicles or airplanes are used.

According to a further embodiment, a window glazing serves as an encapsulation.

The substrate and the encapsulation are particularly preferably designed as window glazing. In this embodiment, the lighting means, which is preferably designed to be permeable to the light emitted by the organic layer stack, or a lighting device with such a lighting means, can be integrated as simply as possible as glazing in a glass pane.

Glass panes with a light source that is at least transparent to light emitted by the organic layer stack or a lighting device with such a light source can be used, for example, to display signals in doors of hotels, at trade fairs or museums. In this way, information can be displayed by the lighting means that can be displayed by the lighting means as required. In this way, stickers, for example on doors, can advantageously be avoided. Furthermore, the luminous information of the illuminant gives a much better signal effect than a sticker.

Furthermore, with the help of light sources that are transparent to light emitted by the organic layer stack, Advertising displays, such as company logos, can be easily integrated into shop windows or information can be imported into the windshields of motor vehicles or aircraft.

Furthermore, lighting means that are at least partially permeable to the light generated by the organic layer stack can be used in ceiling elements, for example in museums or congress centers. As a result, when the lamp is switched off, daylight can penetrate through the ceiling element into the respective room, while the ceiling element with the lamp can be used for lighting at night or in the twilight.

According to at least one embodiment, the substrate is milky.

According to a further embodiment, the encapsulation is milky.

For example, a surface of the substrate and / or the encapsulation is rough and / or scattering centers are introduced into the substrate / the encapsulation.

It is also possible to apply an additional film / layer with so-called “Polymer Dispersed Liquid Crystals” to the substrate and / or the encapsulation. This means that the milkiness can be switched on and off electrically. When a voltage is applied, this layer is clear; when switched off, it becomes milky.

A milky design of the substrate or encapsulation, for example as milky window glazing, can be advantageous in particular in the above-mentioned applications if the respective window does not require a clear view for design reasons or functional reasons.

According to at least one embodiment, the lighting means comprises at least one reflective element. The reflective element is preferably formed along one of the main planes of the lighting means. The reflective element is particularly preferably formed completely along the main plane of the luminous means. The reflective element can be arranged on the underside of the luminous means, for example on the side of the substrate pointing away from the organic layer stack or on the upper side of the luminous means, for example on the side of the encapsulation pointing away from the organic layer stack. Furthermore, the reflective element can be arranged, for example, between the first electrode and the substrate or between the second electrode and the encapsulation. By arranging a reflective element within the illuminant, one of the main surfaces is usually cut off from the light generated in the organic layer stack, i.e. the light generated in the organic layer stack is only emitted from one of the main surfaces, i.e. from the bottom or top . This main area is also referred to below as the “light-emitting front”. It should be pointed out at this point that the term “light-emitting front side” does not necessarily mean that the entire main area from which the light generated in the organic layer stack is emitted is designed to be light-emitting. Rather, it is also possible for only part of the surface of the front side to be light-emitting. In the present case, the luminous area of the light-emitting front side, the underside and the upper side is also referred to as the “luminous area”.

The remaining elements of the luminous means, but at least the elements of the luminous means through which the light generated in the organic layer stack passes on the way to the light-emitting front side, are preferably designed to be permeable to the light generated in the organic layer stack. These elements are particularly preferably designed to be generally transparent to visible light.

If a lighting means, in which those elements are transparent, which the light generated by the organic layer stack passes through on the way to the light-emitting front side, at least one reflective element, the lighting means can advantageously serve as a lighting source when switched on and as a lighting source when switched off of the reflective element in combination with the other elements of the illuminant that are transparent to visible light, as a mirror. With this lamp it is thus advantageously possible to switch between the mirror function and the lighting function.

A light source that includes a reflective element is also called a “reflective light source” in the present case.

The lighting means can have an additional reflective element or one of the elements of the lighting means, such as substrate, electrodes or encapsulation, can be designed as a reflective element.

In accordance with at least one embodiment, the luminous means comprises a reflective layer sequence as a reflective element.

The reflective layer sequence can, for example, comprise or consist of a dielectric mirror. It is also possible that the reflective layer sequence comprises a silver layer and a layer made of mechanically more resistant copper. Preferably is the reflective layer is then electrically insulated from the functional layers of the lighting means such as electrodes or the organic layer stack.

The reflective layer sequence can be arranged on the underside of the luminous means, for example on the side of the substrate pointing away from the organic layer stack or on the upper side of the luminous means, for example on the side of the encapsulation pointing away from the organic layer stack. Furthermore, the reflective layer sequence can be arranged, for example, between the first electrode and the substrate or between the second electrode and the encapsulation.

The reflective layer sequence can, for example, also form the outermost layer of one of the electrodes.

In accordance with at least one embodiment, the luminous means comprises an anti-reflective layer sequence. Such an anti-reflective layer sequence is preferably applied to one of the outer surfaces, that is to say to the upper side or the lower side of the luminous means. If the illuminant emits light only from one of the main surfaces, namely from the light-emitting front side, then the anti-reflective layer sequence is preferably applied to the light-emitting front side.

An anti-reflective layer sequence preferably comprises or consists of a dielectric material. For example, the layer sequence can include at least one layer that includes a silicon nitride or silicon oxide.

According to at least one embodiment, the first or the second electrode is reflective. In this case, the reflective electrode forms the reflective element. The reflective electrode preferably has silver, aluminum and / or gold or consists of one of these materials.

Furthermore, the encapsulation can be designed to be reflective and can serve as a reflective element. In this case, the lighting means emits the light generated in the organic layer stack through the substrate.

In accordance with at least one embodiment, the reflective encapsulation comprises or consists of a metal cap. The metal cap is particularly preferably polished on its inside facing the organic layer stack.

According to a further preferred embodiment, the reflective encapsulation is formed by a reflective thin-film encapsulation with at least one barrier layer. In this embodiment, the thin-film encapsulation already described above comprises at least one reflective layer. This reflective layer preferably comprises or consists of a metal. The reflective thin-film encapsulation particularly preferably comprises at least one of the following layers as a reflective layer: a silver layer, a copper layer. The thin-film encapsulation particularly preferably comprises a silver and a copper layer as a reflective layer.

Furthermore, the reflective thin-film encapsulation can comprise a reflective layer sequence, such as, for example, a Bragg mirror, as a reflective layer. For this purpose, the thin-film encapsulation can - as described above - comprise alternating layers of different materials, which form a particularly dense encapsulation and at the same time a Bragg mirror or a dielectric mirror.

According to a further embodiment, the luminous means comprises a getter material which is transparent to the light emitted by the organic layer stack, preferably furthermore generally transparent to visible light.

In accordance with at least one embodiment, the getter material, which is at least permeable to the light emitted by the layer stack, is encompassed by the reflective encapsulation.

The task of the getter material is to bind substances, such as oxygen and / or moisture, which can penetrate the illuminant despite the encapsulation.

The getter material is preferably encompassed by the encapsulation in such a way that it points into the space to be encapsulated, that is to say towards the organic layer stack. If a metal cap is used as the encapsulation, the getter material is preferably attached to the inside of the metal cap facing the organic layer stack, for example in the form of a layer. So that the metal cap has good reflective properties, a getter material is particularly advantageous which is permeable to the light emitted by the layer stack.

To fasten a cap as an encapsulation on the substrate, an adhesive is used, for example, which is arranged around the active region. Such an adhesive, but also another connecting means, can furthermore be mixed with a getter material. Since the connecting means is often more permeable to harmful substances, such as moisture and oxygen, than the cap, this offers the advantage that these substances already penetrate into the illuminant can be bound by the getter material.

A thin-film encapsulation, in particular with the alternating barrier layers described above, is generally designed to be so tight that no getter material has to be used.

According to at least one further embodiment, the substrate is reflective. In this case, the substrate preferably forms the reflective element described above. In this case, all other elements of the luminous means which are arranged above the substrate are preferably designed to be at least permeable to the light emitted by the organic layer stack. A metal foil or a metal plate, for example, can serve as the reflective substrate.

Illuminants which comprise a reflective element and whose further elements, which are passed through by the light generated in the organic layer stack on the way to the light-emitting front side, are designed to be transparent to visible light, can, as already mentioned above, be used as a mirror or as an illumination source. The lighting means can be designed in such a way that the entire surface of the light-emitting front side serves as a lighting source when the lighting means is in operation and is used as a mirror when it is switched off. Furthermore, it is also possible to use the entire area of the light-emitting front side of the lighting means during operation as a mirror and illumination source at the same time. Furthermore, the area of the light-emitting front side can be segmented so that at least a certain area is provided as a mirror and at least one other area is provided as an illumination source during operation.

Illuminants that have a mirror and lighting function generally include at least one electrode which is designed to be permeable to the light generated by the organic layer stack and which is passed through on the way to the light-emitting front side.

According to at least one embodiment, this transparent electrode is structured so that a desired shape of the luminous area is predetermined within the front side of the luminous means. The shape of the luminous surface can be designed, for example, according to a logo or a symbol, so that this or other information appears against the background of a reflective surface during operation. In a mirror for motor vehicles, such as a rear or side mirror, for example, warnings such as distance reports when parking can be displayed in the mirror.

Furthermore, a light source with a mirror and lighting function can be comprised of a bathroom mirror or a cloakroom mirror, or it can be designed as a bathroom or cloakroom mirror. The bathroom or cloakroom mirror can be designed in several parts, for example, with a main mirror in the middle and two side mirror wings. The laterally attached mirror wings can be designed, for example, as a light source with a mirror and lighting function and, in good lighting conditions, serve as a mirror. In poor lighting conditions, one or both mirror wings can then be switched on as a light source in order to illuminate the viewer. Such an illuminated mirror wing can advantageously also serve as a decorative lighting element.

Furthermore, a light source with a lighting and mirror function can be contained in a search mirror. In the simplest case, such a search mirror is a holding element with an angled mirror element at one end, such as a dental mirror, for example. According to one embodiment, the mirror element comprises a lighting means with a lighting and mirror function. The combination of mirror function and lighting function in the mirror element of the search mirror advantageously offers the possibility of seeing in hard-to-reach places and of being able to illuminate these areas. Such search mirrors can be used, for example, as dental utensils or in the domestic area, for example, to search for lost objects behind or under furniture that is difficult to move. Furthermore, the use of a light source with a mirror and lighting function in a search mirror offers the advantage that the mirror and lamp can be operated with one hand at the same time.

A light source with a mirror and lighting function can also be integrated in a mirror of a portable cosmetic set. If no outside light is available, the mirror lighting can be activated to create better lighting conditions for the observer.

Furthermore, lighting means with mirror and lighting functions can be used as decorative elements, such as flashing mirrors. For example, a flashing mirror can be used in a flashing poinsettia.

According to at least one embodiment of the lighting means, the lighting means is designed to be flexible. A flexible lighting means is characterized, among other things, by the fact that it can be bent to a certain extent without being damaged in the process. Preferably that is flexibly designed illuminants can be bent several times without being damaged in the process. The illuminant is then suitable for withstanding a large number of bending cycles without damage.

The illuminant is particularly preferably designed to be flexible in such a way that it can be wound onto a roll and unwound from the roll without being damaged in the process.

According to at least one embodiment of the illuminant, the encapsulation of the illuminant is designed to be flexible. Flexible means, among other things, that the encapsulation can be bent to a certain extent without the encapsulation being damaged during bending. The flexible encapsulation is, for example, a thin glass layer, a laminate or a thin layer - for example a film - made of a plastic or a metal. Furthermore, the flexible encapsulation can be a thin-film encapsulation, as described above. The thin-film encapsulation preferably comprises at least one barrier layer, as described further above.

According to at least one embodiment, the flexible encapsulation is translucent, that is, the flexible encapsulation is permeable to at least part of the light generated in the organic layer stack of the illuminant, so that this part of the light can leave the illuminant through the flexible encapsulation.

According to at least one embodiment of the lighting means, the substrate of the lighting means is flexible. Flexible means, among other things, that the substrate can be bent to a certain extent without the substrate being damaged during bending.

According to at least one embodiment of the luminous means, the substrate is formed from a metal. The substrate then preferably comprises at least one of the following materials: aluminum, stainless steel, gold, silver. When using a metallic substrate as the substrate for the illuminant, it has proven particularly advantageous, inter alia, that the good reflectivity of the material can contribute to an increase in the light output of the illuminant. At least some of the light that strikes the metallic substrate from the active area of the lighting device during operation of the lighting device can be reflected by the latter in the direction of the light-emitting front side of the lighting device.

The metal is preferably designed to be flexible. For this purpose, the substrate can be designed as a sheet metal, for example. The substrate is then preferably designed as a central sheet with a thickness of at least 3 mm and at most 4.75 mm or as a thin sheet with a thickness of at most 3 mm.

It is also possible for the flexible substrate to be designed as a metal foil. The substrate then preferably has a thickness of at most 1 mm, particularly preferably at most 0.5 mm.

According to at least one embodiment of the luminous means, both the substrate and the encapsulation are designed to be flexible. For this purpose, encapsulation and substrate are preferably formed in accordance with one of the above-described embodiment. For example, the substrate and / or encapsulation can be designed as a film. It is also possible for the substrate to be in the form of a film and the encapsulation to be in the form of a thin-film encapsulation.

According to at least one embodiment of the lighting means, the lighting means comprises a flexible substrate which is formed from a metallic material. For example, the flexible substrate is designed as a sheet metal. The first electrode of the illuminant is arranged downstream of the first main surface of the flexible substrate. It is possible here for further layers to be arranged between the substrate and the first electrode. For example, an electrically insulating layer can be arranged between the substrate and the first electrode, with which at least the first main surface of the substrate is coated. The electrically insulating layer electrically decouples the first electrode from the substrate.

In this embodiment, the organic layer stack of the luminous means is arranged downstream of the first electrode. The organic layer stack is applied directly to the first electrode, for example. The organic layer stack comprises an organic layer which is provided for generating light.

The second electrode follows the organic layer stack. The second electrode is applied directly to the organic layer stack, for example. The second electrode is preferably designed to be translucent, as described above.

In this embodiment, the second electrode is followed by a planarization layer — described above. For example, the planarization layer is arranged directly on the second electrode. The planarization layer preferably contains an organic material. Furthermore, the planarization layer can contain one of the following materials: scattering centers such as diffuser particles, luminescence conversion material, color filter material.

The planarization layer is followed by a barrier layer. The planarization layer is preferably followed by a plurality of barrier layers. As part of a thin-film encapsulation, the barrier layers form the flexible encapsulation of the luminous means and are, for example, applied directly to the planarization layer.

According to at least one embodiment, the substrate of the luminous means is designed as a plastic film. That is to say, the substrate has a thickness of preferably at most 1 mm, particularly preferably at most 0.5 mm, and contains or consists of a plastic.

According to at least one embodiment of the luminous means, the luminous means comprises a flexible substrate which is designed as a film, preferably as a plastic film. the plastic film can consist of a plastic or contain a plastic. For example, it is possible that the substrate comprises a metal foil as a base body which is coated with a plastic material.

The plastic film particularly preferably consists of a light-permeable plastic which is permeable to at least part of the light generated in the organic layer stack of the luminous means during operation.

A first electrode is arranged downstream of the first main surface of the plastic film. The first electrode is preferably applied directly to the first main surface of the substrate - that is to say the film. The first electrode is preferably made light-permeable, as described further above.

The organic layer stack of the illuminant is arranged downstream of the first electrode. For example, the organic layer stack is applied directly to the first electrode. The organic layer stack comprises an outermost organic layer. The outermost organic layer is doped with a dopant. As described above, the dopant of the doped layer is preferably the largest possible atoms or molecules which, in the case of an n-dopant, are suitable for emitting electrons and, in the case of a p-dopant, are suitable for emitting holes. Furthermore, the dopant preferably has a low diffusion constant within the organic layer stack, as is usually the case, for example, with large atoms or molecules. Among other things, cesium is a particularly suitable dopant.

The second electrode is arranged downstream of the organic layer stack. The second electrode is preferably applied directly to the organic layer stack. The second electrode is - as described above - designed to be light-permeable. In this embodiment, the lighting means is preferably free of any getter material.

According to one embodiment of the luminous means, it comprises a flexible encapsulation. The flexible encapsulation is preferably translucent, that is to say it is permeable to at least part of the light generated in the active area when the illuminant is in operation.

The illuminant makes use of the idea that a flexible illuminant with a translucent substrate, translucent first electrode, translucent second electrode and translucent encapsulation can be used in a particularly versatile manner. For example, a lighting means embodied in this way can be used as a transparent envelope for other lighting means - for example as a lampshade for an incandescent lamp. Most of the light generated by the incandescent lamp can penetrate the flexible, translucent light source. By means of the illuminant, light of a different color can be added to the light from the incandescent lamp.

According to at least one embodiment of the lighting means, the substrate is designed as a laminate. The substrate is preferably designed to be flexible. The laminate preferably comprises at least one first layer and at least one second layer. Particularly preferably, the material from which the first layer is formed differs from the material from which the second layer is formed.

According to at least one embodiment of the luminous means, the substrate of the luminous means is formed as a laminate with a first layer consisting of a plastic. A second layer, which consists of a glass, is applied to the first layer. A third layer, which consists of a plastic, is preferably applied directly to the second layer. The third layer particularly preferably consists of the same plastic as the first layer. That is to say, according to this embodiment, the substrate is designed as a plastic-glass-plastic laminate.

The laminate is preferably designed to be flexible. For this purpose, the plastic layers are designed as a film or a thin coating on the basic glass body. The basic glass body is formed by a thin, flexible pane of glass.

According to at least one embodiment of the illuminant, the illuminant has a flexible plastic-glass-plastic laminate as a substrate. A first electrode follows the substrate. the The first electrode is applied directly to the first main surface of the substrate.

The organic layer stack of the illuminant is arranged downstream of the first electrode. The organic layer stack is applied directly to the first electrode, for example. The organic layer stack comprises an organic layer which is provided for generating light.

The second electrode follows the organic layer stack. The second electrode is applied directly to the organic layer stack, for example. The second electrode is preferably embodied in a transparent manner, as described above.

The second electrode is followed by a planarization layer - described above. For example, the planarization layer is arranged directly on the second electrode. The planarization layer preferably contains an organic material. Furthermore, the planarization layer can contain one of the following materials: scattering centers such as diffuser particles, luminescence conversion material, color filter material.

The planarization layer is followed by a barrier layer. The planarization layer is preferably followed by a plurality of barrier layers. As part of a thin-film encapsulation, the barrier layers form the flexible encapsulation of the luminous means and are, for example, applied directly to the planarization layer.

According to at least one embodiment of the lighting means, the substrate is formed by the slat of a blind. This means that the slat of a blind serves as a substrate for the light source. All slats of the blind then preferably serve as a substrate for a respective lamp. The blind is attached, for example, to a window or a door in such a way that the first main surfaces of the substrates formed by the slats of the blind are directed into the interior of the room which has the window or the door. The blind can then be used, for example when the blind is closed, to illuminate the interior with light, preferably similar to sunlight.

According to at least one embodiment of the luminous means, an adhesive layer is applied to the second main surface of the substrate facing away from the first main surface of the substrate of the luminous means. The adhesive layer is preferably covered by a protective film before the illuminant is attached to its destination. After the protective film has been peeled off, the illuminant can be permanently attached to its destination in the sense of a peel-off or adhesive image. The adhesion is mediated by the adhesive layer on the second main surface of the substrate. In particular, a flexibly designed illuminant - as described for example further above - is suitable in this way, since in this way even uneven surfaces, for example rounded or curved surfaces, can be stuck with the illuminant.

According to at least one embodiment of the luminous means, the luminous means comprises at least one first color sub-range. The first color sub-range is suitable for emitting light of a first color. Furthermore, the lighting means comprises at least one second color sub-area. The second color sub-range is suitable for emitting light of a second color that is different from the first color. That is to say, the lighting means comprises at least two color sub-areas, which are each suitable for emitting light of different colors from one another.

A light source with at least two color sub-areas is also referred to here as “multi-colored”. The color sub-areas of a multicolored luminous means can be arranged with respect to one another as desired, for example next to one another or vertically one above the other.

It is also possible that the lighting means comprises a plurality of first color sub-areas. The first color sub-areas are each suitable for emitting light of the first color. The luminous means can then further comprise a plurality of second color subregions, each of which is suitable for emitting light of the second color.

The lighting means is based, among other things, on the idea that the division into at least two color sub-areas enables a lighting means that can emit light of at least two different colors.

It is also possible that the lamp is suitable for emitting mixed light of the two different colors. This means that a viewer perceives mixed-colored light and cannot distinguish between the individual color sub-areas. This can be achieved, for example, in that the dimensions of color sub-areas arranged laterally next to one another are selected to be sufficiently small or in that the color sub-areas are arranged vertically one above the other. The first and the second color subregions of the organic layer stack can emit light sequentially or simultaneously or in quick succession.

According to at least one embodiment of the lighting means, the color subregions are arranged in a common plane. This means the color sub-areas are arranged laterally next to one another or laterally spaced apart from one another. The color subregions can be arranged, for example, in the manner of pixels of a display device. In comparison to pixels of a display device, however, the color subregions have a larger luminous area. The luminous area of each color sub-area of the luminous means is preferably at least one square millimeter.

If the color sub-areas are arranged in a common plane, a color sub-area is formed, for example, in that the active area of the substrate is divided into different sub-areas, each sub-area of the substrate being assigned to a color sub-area. A first electrode, on which the organic layer stack is located, is applied to the subregions. The second electrode is also applied to the organic layer stack. At least one of the electrodes can be structured, preferably in accordance with the subregions. Structuring at least one electrode can enable the individual color sub-areas to be controlled separately.

Furthermore, the organic layer stack can be structured in accordance with the sub-areas, preferably in such a way that each sub-area of the substrate comprises a separate organic layer stack.

According to one embodiment of the luminous means, the organic layer stacks of different color subregions each comprise light-generating layers which are different from one another and which differ with regard to their emitter material and which are suitable for generating light of different colors.

According to at least one embodiment, the sub-areas of the substrate which correspond to the color sub-areas are separated from one another by webs. The webs preferably have an electrically insulating material, for example a photoresist.

According to at least one embodiment of the luminous means, the color sub-area of the luminous means comprises a color filter. The color filter is suitable for filtering light of a certain wavelength range. This means that light in this wavelength range is at least partially absorbed by the color filter. In this way, for example, a first color component can be filtered from white light, and a second color component can shine through the color filter essentially unhindered. The color sub-area with the color filter then essentially emits light of the second color component.

The color filter is embedded in a matrix material, for example in the form of particles of one or more color filter materials.

In particular, color sub-areas that are arranged within a plane can expediently include a color filter. The color filter is usually arranged between the first electrode and the underside of the illuminant if the illuminant is intended to emit light from its underside and between the second electrode and the upper side of the illuminant, if the illuminant is provided, light from its To send out top. If the illuminant is intended to emit light from its upper side and from its lower side, a color filter can also be provided between the first electrode and the lower side and between the second electrode and the upper side. The color filter of the color sub-area can be applied to the substrate within a sub-area of the same, for example. Furthermore, the color filter can also be arranged on the outside of the substrate within an area of the substrate that corresponds to the sub-area or within an area of the encapsulation that corresponds to the sub-area.

According to at least one embodiment of the illuminant, the illuminant comprises a first color sub-range which comprises a first color filter and a second color sub-range which comprises a second color filter, the first color filter being different from the second color filter. In this way, the same organic emitter material can be used for the two color sub-areas. The color of the light emitted by the color sub-areas is then determined by the respective color filter of each color sub-area. In this way, a lighting means is realized with a first color sub-area and a second color sub-area, the first color sub-area emitting light of a first color and the second color sub-area emitting light of a second color and the first color of the second color is different. For example, the layer of the organic layer stack provided for generating light is suitable for emitting white light. The color filters then filter different color components from this white light.

An emitter material that is suitable for emitting white light is described, for example, in the publication D. Buchhauser et al., “Characterization of White-Emitting Copolymers for PLED Displays”, Proc. of SPIE, Vol. 5519, pp. 70-81, (2004) , whose disclosure content is hereby incorporated by reference. The emitter material described here is a broadband emitter based on a polymer Material comprising copolymers. The copolymers comprise polyspirobifluorenes as backbones, which are suitable for emitting light from the blue spectral range. Green-emitting and red-emitting units are also covalently coupled to the polyspirobifluorene.

According to at least one embodiment of the lighting means, the lighting means comprises at least one color sub-area which contains a luminescence conversion material. The luminescence conversion material is suitable for converting light of a first wavelength range into light of a second wavelength range, the first wavelength range being different at least in places from the second wavelength range. The luminescence conversion material is preferably provided for down conversion. This means that the luminescence conversion material absorbs light of at least one first wavelength, which is included in the first wavelength range, and re-emits light of at least a second wavelength, which is included in the second wavelength range, the first wavelength being smaller than the second wavelength. Suitable luminescence conversion materials are, for example, the organic and inorganic materials already described above in connection with the planarization layer.

According to at least one embodiment of the luminous means, the luminous means comprises at least two color sub-areas, each of which comprises a luminescence conversion material, wherein different color sub-areas comprise different luminescence conversion materials. For example, the active area includes a first color sub-area that includes a first luminescence conversion material and a second color sub-area that includes a second luminescence conversion material, the first luminescence conversion material being different from the second luminescence conversion material. In this way, the first color sub-range is suitable for emitting light of a first color and the second color sub-range is suitable for emitting light of a second color, the first color being different from the second color.

In particular, color sub-areas which are arranged within a plane can expediently comprise a luminescence conversion material. The luminescence conversion material is usually arranged between the first electrode and the underside of the illuminant if the illuminant is intended to emit light from its underside and between the second electrode and the upper side of the illuminant, if the illuminant is provided, light from its To send out top.

If the lighting means is provided to emit light from its top side and from its bottom side, a luminescence conversion material can also be provided between the first electrode and the bottom side and between the second electrode and the top side. The luminescence conversion material of the color sub-area can, for example, be applied to the substrate within a sub-area of the latter. Furthermore, the luminescence conversion material can also be arranged on the outside of the substrate within an area of the substrate that corresponds to the sub-area or within an area of the encapsulation that corresponds to the sub-area.

According to at least one embodiment of the lighting means, the color subregions of the lighting means are arranged vertically one above the other. Each color sub-area comprises at least one organic layer of the layer stack of the luminous means which is suitable for generating light. The different layers of the organic layer stack provided for generating light can then differ from one another, for example, with regard to an emitter material.

According to at least one embodiment of the luminous means, different color sub-areas of the luminous means comprise different emitter materials. That is to say, the first color sub-area comprises a first organic emitter material. The second color sub-area then comprises a second organic emitter material, the first organic emitter material being different from the second organic emitter material. Because of the different emitter materials, the different color sub-areas are then suitable for generating light that is different from one another in colors.

According to at least one embodiment of the illuminant, the illuminant comprises at least one third color sub-range which is suitable for emitting light of a third color, the third color being different from the first color and the second color. That is to say, the lighting means comprises at least three different color sub-areas that emit light of different colors in pairs. The illuminant then preferably comprises a plurality of third color subregions, each of which is suitable for emitting light of the third color.

According to at least one embodiment, the luminous means comprises at least one fourth color sub-area which is suitable for emitting light of a fourth color, the fourth color being different from the first color, the second color and the third color. That means that Illuminant comprises at least four different color sub-areas that emit light of different colors in pairs. The illuminant then preferably comprises a plurality of fourth color subregions, each of which is suitable for emitting light of the fourth color.

According to at least one embodiment of the luminous means, the luminous means comprises more than four different color sub-areas, the different color sub-areas differing from one another in the color of the light they emit.

According to at least one embodiment of the luminous means, the luminous means comprises at least one color sub-range which is suitable for emitting white light. The illuminant preferably comprises a plurality of color subregions, each of which is suitable for emitting light of white color.

According to at least one embodiment of the luminous means, similar color sub-areas of the luminous means can be controlled jointly. Color sub-areas of the same type are to be understood as meaning color sub-areas which are constructed identically and are therefore suitable for emitting light of the same color. Color subregions of the same type are distinguished, for example, by the same organic emitter material and / or the same color filter and / or the same luminescence conversion material. For example, all first color subregions that are suitable for emitting light of the first color can be controlled together.

Can be controlled together means that these color sub-areas can be energized at the same time. The same color sub-areas can then, for example, be energized with the same current intensity for the same times, for the same periods of time. This can be achieved, for example, in that similar color sub-areas are electrically connected to one another. For example, one of the electrodes of the lighting means is then structured in such a way that all of the same color sub-areas are connected to one another in an electrically conductive manner by means of this electrode.

According to at least one embodiment of the illuminant, dissimilar color sub-areas can be controlled independently of one another. That is to say, for example, the first and the second color sub-area can be energized independently of one another, so that the first color sub-area is energized at first times and the second color sub-area is energized at second times. For example, all first color sub-areas and all second color sub-areas can be energized alternately, so that the lighting means is suitable for alternately emitting light of the first and second colors. When the first color sub-area and the second color sub-area are operated at the same time, the lighting means then emits light, for example mixed light, of the first and second colors.

According to at least one embodiment of the lighting means, the lighting means comprises a control device which is provided to set the operating state of the lighting means. The control device can be, for example, a switch with which the lighting means can be switched on and off. However, the control device is preferably suitable for setting more than two operating states of the lighting means. For example, the control device can be suitable for controlling different color sub-areas of the luminous means separately from one another.

According to at least one embodiment of the lighting means, the control device comprises a micro-controller.

According to at least one embodiment of the lighting means, the control device is arranged on the first main surface of the substrate of the lighting means. The control device can then be, for example, a separate component which is arranged on the first main surface of the substrate at a distance from the organic layer stack of the luminous means. It is also possible for the control device to contain at least one organic material and to be produced together with the layer stack of the luminous means. This enables a particularly space-saving and cost-effective integration of the control device into the lighting means.

According to at least one embodiment of the lighting means, the control device is encapsulated together with the organic layer stack of the lighting means in a common encapsulation. This proves to be particularly advantageous if the control device contains an organic material as described above.

The encapsulation of the illuminant protects the control device from damage by atmospheric gases, moisture and mechanical stress. A control device encapsulated together with the organic layer stack of the illuminant and containing an organic material enables, inter alia, an advantageously compact, flexible illuminant. One of the encapsulations described above, such as caps, thin plates, foils or a thin-film encapsulation, is particularly suitable as the encapsulation.

According to at least one embodiment of the lighting means, the control device is provided for at least two color sub-areas of the To control lamps independently of each other. The control device is then suitable for energizing two different color sub-areas of the luminous means at different times, for different periods of time and / or with current of different strengths.

According to at least one embodiment of the lighting means, the control device comprises a pulse width modulation circuit. The pulse width modulation circuit is suitable for applying a pulse width modulated signal to the active area and / or color sub-areas of the active area of the lighting means.

A pulse-width modulated signal is an electrical signal, preferably a square wave, a ramp signal, a triangular signal or a sinusoidal signal that t within a fixed pitch period for a certain time is _a turned on and for the remainder of the fundamental period t _from off . The duration for which the signal is switched on is also referred to here as the pulse duration. The value of the signal during the pulse duration is also referred to here as the pulse height. The ratio of on-time and fundamental period t _on / (t _on ⁺ t _off) is called duty cycle. It indicates the percentage of time over which the square-wave signal is switched on within the basic period.

The pulse height, pulse duration and / or direction of the pulse-width-modulated signal therefore changes periodically, for example. The pulse duration, the interval between the pulses and the pulse height are preferably adjustable. The blocking voltage level and the frequency can also be used. These parameters of the pulse width modulation circuit can be set, for example, by a micro-controller that is part of the control device.

According to at least one embodiment of the lighting means, the control device can be regulated by a user. The user can then, for example, set the parameters of the pulse width modulation circuit of the control device.

According to at least one embodiment of the lighting means, the color of the light emitted by the lighting means can be set by means of the control device. For example, the control device energizes certain color sub-areas of the illuminant for this purpose, so that the desired color impression of the light emitted by the illuminant results.

This is particularly easy, for example, when the lighting means comprises a first and a second color sub-area which are connected antiparallel to one another. By energizing the organic layer stack with current in a first direction, the first color sub-area is then operated in the forward direction, the second color sub-area is switched in the reverse direction at this time, so that no current flows through the second color sub-area. By simply changing the direction of the current, the second color sub-area is energized in the forward direction at a second time, so that light of the second color is emitted by the illuminant. The first color sub-range is switched in the reverse direction for the second period of time, so that no current flows through the first color sub-range.

According to at least one embodiment of the lighting means, the color and brightness of the light emitted by the lighting means is dependent on the current density of the current with which the lighting means is energized. For this purpose, the lighting means has, for example, at least two color sub-areas, which are preferably arranged vertically one above the other. The field strength of the electric field generated between the first and second electrodes when the lamp is in operation then determines in which color sub-area a recombination of the charge carriers takes place in the active area of the lamp. In this way, for example, the color and the brightness of the emitted light can be set by the pulse height and the pulse duration of a current flowing through the active region.

According to at least one embodiment, the control device is provided to set the current density of the current with which the lighting means is energized. That is to say, the control device is preferably suitable for setting the strength of the current with which the lighting means is energized and / or the duration of the current with which the lighting means is energized. The color and brightness of the light emitted by the illuminant then preferably depends on the strength of the current with which the illuminant is energized and / or the duration of the energization of the illuminant. It is possible that two, three, four or more colors can be controlled independently of one another.

According to at least one embodiment, the lighting means comprises a sensor which is suitable for determining the color location and / or the brightness of the light emitted by the lighting means during operation. The sensor can be arranged, for example, on the first main surface within the active region of the substrate of the luminous means. In particular, it is possible for the sensor to contain an organic material and to be produced together with the organic layer stack of the luminous means. The sensor can then, for example, be encapsulated together with the organic layer stack of the luminous means by a common encapsulation. The sensor is preferably a photodiode or a phototransistor.

Alternatively, it is possible for the sensor to be designed as a separate component. The sensor can then be arranged, for example, on the first main surface or on the second main surface of the substrate facing away from the first main surface. In this case, the sensor is not necessarily encapsulated together with the organic layer stack of the luminous means.

According to at least one embodiment of the lighting means, the lighting means comprises a control device which is provided to energize the lighting means as a function of the measured values determined by the sensor. That is to say, the control device is suitable for regulating the luminous means as a function of the color location and / or the brightness of the light emitted by the luminous means during operation. The lighting means comprises, for example, an organic layer stack as described above, in which the color of the light emitted by the lighting means is dependent on the current density of the current with which the lighting means is energized. The control device is then suitable for setting a specific color location and a specific brightness of the light generated by readjusting the current density of the current with which the illuminant is energized as a function of the measured values determined by the sensor. In this way, the control device is suitable for setting a specific color of the light generated by the lighting means by means of a control loop. The color can be specified by a user of the lighting means or a micro-controller of the control device.
According to the invention, the lighting means comprises at least one connection point which is provided for making electrical contact with the lighting means. The connection point is connected in an electrically conductive manner to at least one electrode of the luminous means, for example by means of an electrical lead described above. The lighting means can be electrically contacted from outside the lighting means via the connection point. The connection point can, for example, be connected in an electrically conductive manner to a voltage source, a current source or a control device.
According to the invention, the connection point is arranged on the second main surface of the substrate facing away from the first main surface of the substrate of the luminous means. The connection point is connected in an electrically conductive manner to at least one of the electrodes of the lighting means, for example by means of vias or openings in the substrate.

Alternatively, it is possible that an electrically conductive connection between the connection point and at least one electrode of the luminous means is guided over the side surfaces of the substrate. In this case, vias or openings in the substrate can be dispensed with.

The connection between at least one electrode of the lighting means and the connection point can be made by electrical leads. The electrical supply lines are designed, for example, as an electrically conductive coating of parts of the lighting means, as conductor tracks integrated into the substrate, or as contact wires.

According to at least one embodiment of the luminous means, at least one connection point of the luminous means is arranged on a side surface of the substrate. The side surface of the substrate preferably connects the first main surface of the substrate to the second main surface of the substrate. In the event that the lighting means has more than one connection point, all connection points of the lighting means can be arranged either on a side surface of the substrate or on the second main surface of the substrate. Furthermore, it is possible for connection points to be located both on the side surface of the substrate and on the second main surface of the substrate.
According to the invention, at least one connection point of the lighting means can be designed as a connection pin. The connection pin can be arranged on the second main surface of the substrate or on a side surface of the substrate. The connection pin contains or consists of an electrically conductive material such as a metal.

According to at least one embodiment of the luminous means, at least one connection point of the luminous means is designed as a connection plug. The connector plug can be arranged on the second main surface of the substrate or on a side surface of the substrate. The connector is designed, for example, in the manner of a cinch connector or in the manner of a jack connector. In this case, it is particularly possible for the connector plug to have at least two contact areas that are electrically isolated from one another. The first contact area is then connected in an electrically conductive manner to the first electrode of the lighting means, for example via first electrical leads. The second contact area is correspondingly conductively connected to the second electrode of the lighting means - for example via second electrical leads.

According to at least one embodiment of the lighting means, at least one connection point of the lighting means is designed as a recess. The recess is, for example, a hole or a bore that is made in the substrate on a side surface of the substrate or on the second main surface of the substrate.

The side surfaces of the recess are designed to be electrically conductive at least in places. The side surfaces of the recess can be coated in an electrically conductive manner, for example.

According to at least one embodiment of the illuminant, at least one connection point of the illuminant is designed as a socket. The socket can be designed, for example, in the manner of a cinch socket or a jack socket. The socket then has two electrically conductive contact areas that are electrically isolated from one another. The first contact area is then connected in an electrically conductive manner to the first electrode of the lighting means, for example via first electrical leads. The second contact area is connected in an electrically conductive manner to the second electrode of the lighting means, for example via second electrical leads.

According to at least one embodiment of the lighting means, the lighting means has at least one connection point which comprises a plurality of connection pins. The connection point then comprises at least one first connection pin, which is connected in an electrically conductive manner to the first electrode of the luminous means. Furthermore, the connection point comprises a second connection pin, which is connected in an electrically conductive manner to the second electrode of the luminous means. In addition, the connection point can comprise further connection pins, which are electrically conductively connected, for example, to a control device of the luminous means. In this way it is possible for the control device to be controllable from outside the lighting means via the corresponding connection pins.

According to at least one embodiment of the lighting means, the lighting means has a control device and a connection point which is connected to the control device in an electrically conductive manner. Electrical signals can be passed to the control device via the connection point. In this way, the control device can be adjusted from outside the lighting means - for example by a user.
According to the invention, at least one connection point of the lighting means can be designed as a connection rail which extends along a side surface of the substrate. The connecting rail is preferably connected in an electrically conductive manner to at least one electrode of the luminous means.

The connecting rail can be designed, for example, in the shape of a cylinder or in the manner of a cut-open cylinder. The connection rail preferably extends over at least 60% of the length of the side surface of the substrate on which the connection rail is arranged. The connecting rail particularly preferably extends over at least 80% of the length of the side surface of the substrate on which the connecting rail is arranged.
According to the invention, at least one of the connection points is provided for mechanical fastening of the lighting means. The lighting means can be mechanically connected, for example, to other lighting means or to a carrier by means of this connection point. According to the invention, the connection point is provided for both mechanical and electrical fastening of the lighting means. That is, the lighting means is electrically contacted via the same connection point and is mechanically connected to another lighting means or a carrier.

A lighting device is also specified. The lighting device comprises at least one lighting means, as explained in connection with at least one of the embodiments described above.

According to at least one embodiment of the lighting device, the lighting device comprises at least two lighting means which are electrically and mechanically connected to one another. It is possible that the lighting means are directly connected to one another electrically and mechanically. However, it is also possible that the lighting means are electrically and mechanically connected to one another via a carrier of the lighting device.

According to at least one embodiment of the lighting device, the lighting device comprises a first light source and a second light source. The first illuminant has at least one connection point which is designed as a connection pin. The connection pin is arranged on a side surface of the substrate of the first luminous means. The second luminous means has at least one connection point which is designed as a recess in a side surface of the substrate of the second luminous means. The connecting pin of the first illuminant engages in the recess of the second illuminant. The first and the second lighting means are connected to one another in an electrically conductive manner via their connection points - the connection pin and the recess.

The lighting device can furthermore comprise further lighting means, which are electrically conductively connected to the first or the second lighting means in the manner described.

According to at least one embodiment of the lighting device, the first and the second lighting means are also mechanically connected to one another by means of the connection points by means of a press fit.

For this purpose, for example, a first connection point of the first luminous means is designed as a connection pin. A second connection point of the second illuminant is then designed as a recess. The diameter of the connecting pin of the first illuminant is greater than or equal to that Selected diameter of the recess of the second illuminant. By pressing the connecting pin of the first illuminant into the recess of the second illuminant, a mechanically firm connection is then created between the first and the second illuminant. The first and the second lighting means are preferably mechanically and electrically connected to one another by the connection pin and the corresponding recess.

According to at least one embodiment of the lighting device, the first and the second lighting means are mechanically connected to one another by means of the connection points by a plug connection. For this purpose, for example, the first illuminant has a first connection point which is designed as a connection plug. The second illuminant has a second connection point which is designed as a socket. By inserting the connector plug of the first illuminant into the socket of the second illuminant, a plug connection is created, by means of which the first illuminant is mechanically connected to the second illuminant. The first illuminant and the second illuminant are preferably also electrically connected to one another by means of the plug connection. The plug connection between the first and the second lighting means is preferably designed to be detachable, preferably in such a way that the first and the second lighting means can be detached from one another again by applying a small mechanical force. In this way, for example, a defective lamp can be easily removed from the lighting device and replaced by a new lamp.

According to at least one embodiment of the lighting device, the lighting device comprises a carrier to which the at least one lighting means of the lighting device is mechanically connected.

According to at least one embodiment of the lighting device, the lighting device comprises a carrier to which the at least one lighting means of the lighting device is electrically connected. It is possible that the lighting means of the lighting device are also electrically connected to one another via the carrier.

According to at least one embodiment of the lighting device, the lighting device comprises a carrier to which the at least one lighting means of the lighting device is mechanically and electrically connected. In the event that the lighting device has a plurality of lighting means, the lighting means are mechanically connected to one another by means of the carrier. In addition, it is also possible that the lighting means are also electrically connected to one another by means of the carrier.

According to at least one embodiment, the carrier is designed as a carrier plate. That is, the carrier is formed by a solid body which has two opposing main surfaces which are connected to one another by side surfaces.

According to at least one embodiment of the lighting device, the carrier is designed as a grid. The carrier can be designed in the manner of a carrier plate which has a plurality of openings. In this way, a carrier is realized which has the lowest possible weight.

According to at least one embodiment of the lighting device, the carrier is designed as a cable system. The carrier then comprises at least two cables which contain an electrically conductive material or consist of an electrically conductive material. The lighting means of the lighting device can be electrically contacted by means of the cables of the carrier. For example, the cables of the lighting device run parallel or essentially parallel to one another. One or more illuminants can then be arranged and electrically connected between two cables of the carrier.

According to at least one embodiment of the lighting device, the carrier is designed as a rod system. The carrier then comprises at least two rods which contain an electrically conductive material or consist of an electrically conductive material. The light sources of the lighting device can then be electrically contacted by means of the rods. For example, the rods of the lighting device run parallel or essentially parallel to one another. One or more illuminants can then be arranged and electrically connected between two rods each of the carrier.

According to at least one embodiment of the lighting device, at least one lamp of the lighting device is mechanically and electrically connected to the carrier by means of a connection point which is designed as a connection pin. All the lighting means of the lighting device are then preferably mechanically and electrically connected to the carrier by means of at least one connection point which is designed as a connection pin. For this purpose, the carrier can, for example, have a large number of recesses. The connection points of the lighting means, which are designed as connection pins, then engage in corresponding recesses in the carrier. The mechanical The connection between the lighting means and the carrier is preferably provided by a press fit.

According to at least one embodiment of the lighting device, at least one light source of the lighting device is mechanically and electrically connected to the carrier by means of at least one connection point which is designed as a connection plug. All the lighting means of the lighting device are then preferably mechanically and electrically connected to the carrier by means of at least one connection point which is designed as a connection plug. For this purpose, the carrier can, for example, have a large number of recesses, each of which is designed as connection sockets. The connector plugs of the lamps then engage in corresponding sockets on the carrier. The mechanical connection between the lighting means and the carrier is preferably designed to be detachable, in such a way that the lighting means can be released from the carrier by applying a small mechanical force. In this way, damaged illuminants can be replaced particularly easily.

According to at least one embodiment of the lighting device, at least one light source of the lighting device is mechanically and electrically connected to the carrier by means of at least one connection point, which is designed as a connection rail. All of the lighting means of the lighting device are then preferably connected to the carrier by means of at least one connecting rail each. In this case, the carrier is preferably designed as a cable system or rod system.

For example, the carrier comprises two ropes or rods which run parallel to one another and are designed to be electrically conductive. At least one light source of the lighting device then comprises at least two connection points which are designed as connection rails. The connecting rails run on opposite side surfaces of the illuminant. Each connecting rail engages in a cable or a rod of the carrier, so that the lighting means is arranged between the cables or the rods of the carrier. A plurality of lighting means is preferably connected to the carrier in this way.

According to at least one embodiment of the lighting device, the lighting device comprises a first light source and a second light source, the first and the second light source emitting light of different colors during operation. On the one hand, it is possible that the first and the second lighting means differ from one another with regard to the organic emitter material used, a luminescence conversion material or a color filter. The first and the second illuminant are then designed differently.

However, it is also possible to use for the first and the second illuminant, as described further above, illuminants which are suitable for emitting light of at least a first and a second color during operation. This can be implemented, for example, as described above, in that the first and the second lighting means each comprise at least two color sub-areas which are suitable for emitting light of different colors from one another. That is to say, the lighting device comprises at least one multicolored illuminant, as described in more detail above.

According to at least one embodiment of the lighting device, the lighting device comprises a plurality of lighting means which are suitable for emitting light of different colors from one another. That is to say, the lighting device comprises a large number of multicolored illuminants.

According to at least one embodiment of the lighting device, an optical element which comprises a diffuser is arranged downstream of the lighting means of the lighting device in an emission direction of the lighting means. For example, in this case the carrier is designed as a carrier plate. A plurality of illuminants, which are mechanically and electrically connected to the carrier plate, are then applied to the carrier plate. The side of the lighting means facing away from the carrier plate is followed by an optical element which comprises a diffuser. The optical element can be formed, for example, by a light-permeable plate - for example a glass plate - into which light-scattering particles are introduced. Alternatively, it is possible for the surface of the light-permeable plate to be roughened, so that due to the refraction of light when it passes through the plate, there is a diffuse scattering of the light passing through. The optical element, for example the diffuser plate, can be mechanically fastened to the carrier of the lighting device.

The optical element downstream of the at least one lamp of the lighting device is preferably suitable for mixing the light generated by the lighting device in such a way that the modular structure of the lighting device made up of several lighting devices is no longer recognizable to a viewer. The lighting device then appears as if the lighting device has a single luminous surface, the shape and surface area of the luminous surface being determined by the shape and the light passage area of the optical element.

According to at least one embodiment of the lighting device, the lighting device has a multiplicity of lighting means which are arranged in a matrix. "Arranged like a matrix" means that the illuminants are arranged in rows and columns. The lighting device also has a control device which is suitable for controlling each of the lighting means of the lighting device independently of the other lighting means. The control device can therefore power each lighting means of the lighting device for predefinable periods of time, at predefinable times, with a predeterminable operating current.

Due to the matrix-like arrangement of the lighting means and the control device, which is suitable for controlling each of the lighting means independently of the other lighting means of the lighting device, the lighting device is suitable for forming a coarse-grained display device. Each lamp then corresponds to a pixel of the display device. In this way, the lighting device is suitable for use as a coarse-grained display, advertising logo or signal transmitter. The lighting device can also be provided in the form of a seven-segment display for displaying numbers and letters. The lighting device is also particularly suitable as emergency lighting, which uses symbols or words to indicate an escape route, for example.

The lighting means of the lighting device embodied as a coarse-grained display device are preferably mechanically and electrically connected to a carrier via connection points, as described above, and / or electrically and mechanically connected to one another via connection points.

Particularly preferably, the lighting device embodied as a coarse-grained display device comprises at least one multicolored illuminant which is suitable for emitting light of a first color during a first time span and emitting light of a second color during a second time span, the first color being different from the second color differs. This can, for example - as described above - be made possible by the fact that the lighting means has a plurality of color subregions which are suitable for generating light of different colors from one another. Alternatively, it is possible that the color of the light generated by the lighting means during operation depends, for example, on the current density with which the lighting means is operated.

The use of lighting means that are suitable for emitting light of different colors enables the lighting device to be used as a coarse-grained display device that is particularly versatile.

According to at least one embodiment of the lighting device, the carrier of the lighting device contains a textile material. The lighting means of the lighting device are then at least mechanically connected to the carrier. The mechanical connection can be mediated, for example, by a Velcro connection between the textile material and a Velcro layer that is applied to the second main surface of the illuminant.

In addition, it is possible that conductor tracks - for example thin metal wires - are integrated into the textile material. The conductor tracks can be woven into the material of the carrier, for example. Electrical contacting of the lighting means of the lighting device via the carrier is possible via these conductor tracks. Alternatively, the lighting means of the lighting device can have their own power supply in the form of a battery, a rechargeable battery or a capacitor.

The lighting means of the lighting device with the carrier, which contains a textile material, are preferably designed to be flexible. Particularly preferably, the lighting means are designed to be similarly flexible as the carrier. This means that the illuminants can largely adapt to a deformation of the carrier on which they are applied - for example by folding.

According to at least one embodiment of the lighting device, the carrier, which contains a textile material, is designed as a curtain. At least one - for example flexible - illuminant is then applied to the curtain. It is possible that a large part of the surface of the curtain facing the at least one lighting means is covered by the at least one lighting means.

When the curtain is drawn, the main surface of the curtain covered by the at least one lighting means forms the lighting surface of the lighting device.

For example, the curtain is attached to a window. The curtain then forms a lighting device, the luminous area of which corresponds approximately to the area of the window that is covered by the curtain. In this way, the lighting device realizes room lighting which corresponds to the window in terms of size and light irradiation direction. A room with such a curtain is preferably illuminated by the lighting device with light similar to daylight.

According to at least one embodiment of the lighting device, the carrier, which contains a textile material, is an item of clothing executed. At least one lamp is mechanically attached to the item of clothing. The mechanical connection can be mediated, for example, by a Velcro connection between the textile material of the item of clothing and a Velcro layer that is applied to the second main surface of the illuminant. The lighting means is preferably designed to be flexible - as described further above - and has a flexibility which corresponds approximately to the flexibility of the item of clothing. As described above, the lighting means is preferably suitable for generating light of at least two different colors. The lighting means can then serve as a signaling device with which the wearer of the item of clothing can visually display information. For this purpose, the lighting means is connected to a control device that can be adjusted by the wearer of the item of clothing.

Alternatively or additionally, it is possible for the control means to set the operating state of the lighting means - that is to say, for example, the color of the light emitted by the lighting means - as a function of certain measured values. For this purpose, the lighting device comprises at least one sensor which is suitable for determining body functions of the wearer of the item of clothing, such as the pulse frequency, the skin resistance and / or the body temperature of the wearer. The control device then sets the operating state of the lighting means as a function of the determined values. The illuminant is then suitable for optically reproducing information about bodily functions of the wearer of the item of clothing.

Furthermore, the lighting device, the wearer of which is designed as an item of clothing, can serve to improve the visibility of the person wearing the item of clothing, for example in traffic. Such a piece of clothing is particularly suitable for cyclists and pedestrians.

In addition, an optical display device is specified. The optical display device comprises an imaging element and at least two lighting means, which are designed according to at least one of the embodiments described above. The lighting means form a backlighting device for the imaging element.

The backlighting device is preferably designed like at least one of the lighting devices described above.

According to at least one embodiment of the display device, the backlighting device of the display device comprises at least two lighting means which are electrically and mechanically connected to one another. It is possible that the lighting means are directly connected to one another electrically and mechanically. However, it is also possible that the lighting means are electrically and mechanically connected to one another via a carrier of the backlighting device of the display device. The lamps of the backlighting device are then, as described above, mechanically and / or electrically connected to one another and / or to a carrier via connection points which can be designed as connection pins, connection plugs, connection pins, connection holes or sockets.

The imaging element of the display device can be an LCD panel, for example. The imaging element is arranged directly downstream of the lighting means of the backlighting device in their emission direction. This means that the imaging element is then directly backlit by the light sources. The modular structure of the backlighting device for the imaging element from two or more light sources enables the backlighting of a particularly large area. In this way, a particularly large display device can be implemented. Furthermore, defective lighting means of the backlighting device can be exchanged particularly easily - due to the modular structure of the backlighting device of the display device.

According to at least one embodiment of the optical display device, at least one of the lighting means of the display device is suitable for emitting white light during operation. All of the lighting means of the backlighting device of the display device are then preferably suitable for emitting white light.

According to at least one embodiment of the display device, the light emitted by the lighting means of the display device during operation mixes to form white light. That is to say, the display device then comprises, for example, illuminants that are suitable for emitting green light, illuminants that are suitable for emitting red light, and illuminants that are suitable for emitting blue light. These illuminants are then preferably arranged in such a way that a white color impression is created by mixing the light from the individual illuminants. For this purpose, an optical element which comprises a diffuser can be arranged between the lighting means and the imaging element. For example, the optical element is a diffuser plate which - as described above - is suitable for mixing the light generated by the lighting means.

According to at least one embodiment of the lighting device, the lighting device comprises one of those described here Light source as a first light source and a further second light source.

The lighting means is preferably designed in such a way that it is designed to be transparent at least for the light generated by the organic layer stack and for light from the second light source.

According to at least one embodiment, the second light source is an incandescent lamp, a light-emitting diode module - “LED module” for short, at least one single light-emitting diode - “LED” for short, a cold cathode lamp, a lava lamp, a fluorescent lamp or an organic light-emitting diode - "OLED" for short.

An LED module comprises one or more LEDs which is / are arranged on a carrier. The carrier can be, for example, a printed circuit board, such as a metal core board. Furthermore, an LED module can comprise beam-shaping optics which are arranged downstream of the LEDs in their emission direction. The beam-shaping optics are, for example, at least partially formed in the manner of one of the following optical elements: compound parabolic concentrator (Compound Parabolic Concentrator, CPC), compound elliptical concentrator (Compound Elliptic Concentrator, CEC), compound hyperbolic concentrator (Compound Hyperbolic Concentrator, CHC). Furthermore, the beam-shaping optics can be a lens.

According to at least one embodiment, the illuminant emits light of a first color and the second light source emits light of a second color different from the first color.

According to at least one embodiment, the lighting means is designed to be dimmable.

According to at least one further embodiment, the second light source is designed to be dimmable.

Dimming of the light source and the second light source can be achieved, for example, by using a PWM circuit that generates pulse-width modulated signals (PWM signals), or with a conventional dimmer.

According to at least one embodiment, the lighting means is designed to be flexible.

According to at least one embodiment, the lighting means is designed as a lampshade, which is arranged, for example, around or above the second light source.

According to at least one embodiment, the illuminant and the second light source are arranged with respect to one another in such a way that light from the second light source passes through the illuminant.

• - das Leuchtmittel Licht einer ersten Farbe aussendet und die zweite Lichtquelle Licht einer von der ersten Farbe verschiedenen zweiten Farbe,
• - zumindest eine der beiden Lichtquellen dimmbar ist, und
• - das Leuchtmittel und die zweite Lichtquelle so zueinander angeordnet sind, dass Licht der zweiten Lichtquelle durch das Leuchtmittel hindurch tritt,

wird im Folgenden als „farbveränderliche Beleuchtungseinrichtung“ bezeichnet.A lighting device in which:

• - the illuminant emits light of a first color and the second light source emits light of a second color different from the first color,
• - At least one of the two light sources can be dimmed, and
• - the illuminant and the second light source are arranged to one another in such a way that light from the second light source passes through the illuminant,

is referred to in the following as "color-changeable lighting device".

The luminous means of the color-changeable lighting device is preferably designed to be transparent to visible light, in particular to the light generated by the organic layer stack and to the light emitted by the second light source.

The color-changeable lighting device is suitable for emitting mixed-colored light, which comprises light from the illuminant and light from the second light source. This offers the advantage that the color location and brightness of the lighting device can be varied by varying the color and brightness of the illuminant and / or the second light source. Either the brightness of one of the light sources - illuminants or the second light source - can be kept constant and the brightness of the other light source varied, or the brightnesses of both light sources can be changed. In this way, the color and brightness of the light from the lighting device can be easily adapted to a specific situation or mood.

According to at least one embodiment of the color-changeable lighting device, the lighting means emits light from the yellow spectral range and the second light source emits light from the blue spectral range. It is also conceivable that the illuminant emits light from the blue spectral range and the second light source emits light from the yellow spectral range. In this way, a color-variable lighting device is advantageously achieved, which emits light with a color location in the white area of the CIE standard color table. By varying the brightness of the second light source and / or the illuminant - that is, by matching the color components of the blue light and the yellow light to the mixed-colored light of the variable-color lighting device - the The color location of the mixed-colored light of the color-changeable lighting device can be varied in wide areas of the CIE standard color table and, in particular, adapted to a desired value. In particular, different white tones of the mixed-colored light can be set and adapted to the corresponding situation.

Furthermore, the lighting means and the second light source of a color-changeable lighting device, in addition to yellow and blue, can also have other colors that differ from one another. If both light sources - illuminant and second light source - are designed to be dimmable, the color of the mixed-colored light of the lighting device can be set fluently from the color of the light of the illuminant to the color of the light of the second light source.

In particular, it is possible that the illuminant is designed as a multicolored illuminant described above with at least two color sub-areas.
Such a multicolored illuminant enables a color-variable lighting device which, for example, can generate a particularly large number of white tones and / or white light with a high color rendering index (CRI).

According to at least one embodiment of the color-changeable lighting device, the illuminant emits light of a first color from the warm white area of the CIE standard color table and the second light source emits light of a second color from the cold white area of the CIE standard color table. It is also possible for the illuminant to emit light of a first color from the cold white area of the CIE standard color table and the second light source to emit light of a second color from the warm white area of the CIE standard color table. The color location of the mixed-colored light of this color-changing lighting device can be set between cold white and warm white. Such a color-changing lighting device can be used as a light source in private areas, for example, with a rather cold white light being used in work situations, which the user quickly and easily turns into warm white by dimming the cold white light source and increasing the warm white portion of the mixed-colored light during relaxation phases Light can be changed.

The lighting means of the color-changeable lighting device is particularly preferably designed as a lampshade. This is arranged, for example, around or above the second light source. The lighting means is particularly preferably designed to be flexible.

According to at least one embodiment, the lighting means is designed to be flexible in such a way that the shape of the lighting means can be changed during use.

A color-changing lighting device with a second light source, which is mainly used for decoration, such as a lava lamp, is preferably used for decorative purposes, for example in bars or as floor lighting for dance floors.

Furthermore, color-changing lighting devices can be used for medical purposes in light therapy.

According to at least one embodiment of the lighting device, a light-emitting main surface of the lighting means and a light-emitting front side of the second light source are arranged in a common plane. In this case, the second light source can be, for example, an LED module which is arranged within the radiation-emitting front side of the lighting means. The LED module is particularly preferably arranged centrally within the radiation-emitting main surface of the lighting means. Such an arrangement can be used, for example, as a decorative element.

• 1 zeigt eine schematische Schnittdarstellung eines organischen Schichtstapels zwischen einer ersten und einer zweiten Elektrode gemäß einem Ausführungsbeispiel,
• 2A zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem Ausführungsbeispiel,
• 2B zeigt eine schematische perspektivische Darstellung einer Elektrode gemäß einem Ausführungsbeispiel,
• 2C zeigt eine schematische Schnittdarstellung entlang der Linie A-A' der 2B,
• 3 zeigt eine schematische Schnittdarstellung einer Dünnfilmverkapselung,
• 4A zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 4B zeigt eine schematische Draufsicht auf das Substrat des Leuchtmittels gemäß 4A,
• 4C zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 4D zeigt eine schematische Draufsicht auf das Substrat eines Leuchtmittels gemäß der 4C,
• 5A zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 5B zeigt eine schematische Darstellung des Aufbaus eines lichtdurchlässigen Leuchtmittels,
• 6 zeigt eine schematische perspektivische Ansicht einer Tür gemäß einem Ausführungsbeispiel,
• 7 zeigt eine schematische perspektivische Darstellung eines Schaufensters gemäß einem Ausführungsbeispiel,
• 8 zeigt eine schematische perspektivische Frontansicht eines Kraftfahrzeuges gemäß einem Ausführungsbeispiel,
• 9 zeigt eine schematische perspektivische Darstellung eines Museumsraumes gemäß einem Ausführungsbeispiel,
• 10 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem Ausführungsbeispiel,
• 11 zeigt eine schematische perspektivische Darstellung eines Raumes mit einem Raumteiler gemäß einem Ausführungsbeispiel,
• 12A zeigt eine schematische Schnittdarstellung eines Displays mit einem Leuchtmittel gemäß einem Ausführungsbeispiel,
• 12B zeigt eine schematische Draufsicht auf ein Fernsehgerät,
• 13A zeigt eine schematische perspektivische Darstellung eines Regals gemäß einem Ausführungsbeispiel,
• 13B zeigt einen vergrößerten Ausschnitt der 13A,
• 14 zeigt eine schematische Schnittdarstellung eines reflektiven Displays gemäß einem Ausführungsbeispiel,
• 15 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem Ausführungsbeispiel,
• 16 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 17A zeigt eine schematische Schnittdarstellung einer Dünnfilmverkapselung gemäß einem Ausführungsbeispiel,
• 17B zeigt eine schematische Schnittdarstellung einer reflektierenden Verkapselung gemäß einem Ausführungsbeispiel,
• 17C zeigt eine schematische Schnittdarstellung durch eine Dünnfilmverkapselung gemäß einem weiteren Ausführungsbeispiel,
• 18A zeigt eine schematische perspektivische Darstellung eines Kraftfahrzeugspiegels gemäß einem Ausführungsbeispiel,
• 18B zeigt eine schematische perspektivische Darstellung des Kraftfahrzeugspiegels gemäß der 18A,
• 19 zeigt eine schematische perspektivische Darstellung eines mehrteiligen Spiegels gemäß einem Ausführungsbeispiel,
• 20 zeigt eine schematische perspektivische Darstellung eines mehrteiligen Spiegels gemäß einem weiteren Ausführungsbeispiel,
• 21 zeigt eine schematische perspektivische Darstellung eines Suchspiegels gemäß einem Ausführungsbeispiel,
• 22 zeigt eine schematische perspektivische Darstellung eines Schminkspiegels gemäß einem Ausführungsbeispiel,
• 23 zeigt eine schematische Draufsicht auf ein dekoratives Element gemäß einem Ausführungsbeispiel,
• 24 zeigt eine schematische perspektivische Darstellung eines Spiegels gemäß einem weiteren Ausführungsbeispiel,
• 25 zeigt eine schematische Schnittdarstellung eines flexiblen Leuchtmittels gemäß einem Ausführungsbeispiel,
• 26 zeigt eine schematische Schnittdarstellung eines flexiblen Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 27 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem Ausführungsbeispiel,
• 28A zeigt eine schematische Draufsicht auf ein Fenster mit einer Jalousie gemäß einem Ausführungsbeispiel,
• 28B zeigt eine schematische Schnittdarstellung durch eine Lamelle der Jalousie der 28A,
• 29A zeigt eine schematische Ansicht eines Fensters, das von einem Vorhang gemäß einem Ausführungsbeispiel bedeckt ist,
• 29B zeigt den Vorhang gemäß der 29A in einer schematischen Schnittdarstellung,
• 29C zeigt eine schematische Schnittdarstellung eines Vorhangs gemäß einem weiteren Ausführungsbeispiel,
• 30 zeigt eine schematische Ansicht eines Fensters mit einem Vorhang gemäß einem weiteren Ausführungsbeispiel,
• 31 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem Ausführungsbeispiel,
• 32 zeigt eine schematische perspektivische Darstellung eines Möbelstücks gemäß einem Ausführungsbeispiel,
• 33 zeigt eine schematische perspektivische Darstellung eines flexiblen Leuchtmittels gemäß einem Ausführungsbeispiel in aufgerolltem Zustand,
• 34A zeigt eine schematische Darstellung einer Beleuchtungseinrichtung gemäß einem Ausführungsbeispiel,
• 34B zeigt eine schematische Schnittdarstellung der Beleuchtungseinrichtung der 34A entlang der Schnittlinie A-A',
• 35A zeigt eine schematische Draufsicht auf ein Leuchtmittel gemäß einem Ausführungsbeispiel,
• 35B zeigt eine schematische Schnittdarstellung des Leuchtmittels gemäß der 35A entlang der Schnittlinie A-A',
• 35C zeigt eine schematische Draufsicht auf ein mehrfarbiges Leuchtmittel gemäß einem Ausführungsbeispiel,
• 36 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 37 zeigt eine weitere schematische Schnittdarstellung eines mehrfarbigen Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 38 zeigt eine schematische Draufsicht auf erste und zweite Elektroden gemäß einem weiteren Ausführungsbeispiel eines mehrfarbigen Leuchtmittels,
• 39 zeigt eine schematische Draufsicht auf ein mehrfarbiges Leuchtmittel gemäß einem weiteren Ausführungsbeispiel,
• 40A zeigt eine schematische Draufsicht auf eine Beleuchtungseinrichtung gemäß einem Ausführungsbeispiel,
• 40B zeigt eine schematische Ausschnittsvergrößerung der 40A,
• 41 zeigt eine schematische Draufsicht auf ein Leuchtmittel gemäß einem weiteren Ausführungsbeispiel,
• 42 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 43 zeigt eine schematische Schnittdarstellung eines weiteren Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 44 zeigt ein weiteres Ausführungsbeispiel eines Leuchtmittels in einer schematischen Draufsicht,
• 45 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 46 zeigt das Leuchtmittel gemäß der 45 in einer schematischen perspektivischen Darstellung,
• 47 zeigt eine schematische Darstellung der CIE-Normfarbtafel,
• 48A zeigt eine schematische Darstellung eines Flirtindikators gemäß einem Ausführungsbeispiel mit einem mehrfarbigen Leuchtmittel,
• 48B zeigt eine schematische Darstellung des Leuchtmittels gemäß der 48A zusammen mit einer Steuervorrichtung,
• 49 zeigt eine schematische Schnittdarstellung eines Leuchtmittels gemäß einem Ausführungsbeispiel,
• 50 zeigt schematisch eine weitere Verwendungsmöglichkeit eines mehrfarbigen Leuchtmittels,
• 51 zeigt eine schematische perspektivische Darstellung der Verwendung von mehrfarbigen Leuchtmitteln,
• 52 zeigt eine schematische perspektivische Darstellung eines Leuchtmittels gemäß einem Ausführungsbeispiel,
• 53 zeigt eine schematische Darstellung einer Anschlussstelle gemäß einem Ausführungsbeispiel, wie sie etwa bei dem Leuchtmittel der 52 verwendet sein kann,
• 54 zeigt eine weitere schematische perspektivische Darstellung einer Anschlussstelle gemäß einem Ausführungsbeispiel, wie sie bei der 52 verwendet sein kann,
• 55 zeigt eine schematische Draufsicht auf eine Anschlussstelle, wie sie bei dem Leuchtmittel des Ausführungsbeispiels der 52 verwendet sein kann,
• 56 zeigt eine schematische perspektivische Darstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 57 zeigt eine schematische perspektivische Darstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 58 zeigt eine schematische Draufsicht auf eine Anschlussstelle gemäß einem Ausführungsbeispiel, wie sie bei dem Leuchtmittel der 57 verwendet sein kann,
• 59 zeigt eine weitere schematische Draufsicht auf eine Anschlussstelle gemäß einem Ausführungsbeispiel, wie sie bei dem Leuchtmittel der 57 verwendet sein kann,
• 60 zeigt eine schematische Draufsicht auf eine weitere Ausführungsform der Anschlussstelle, wie sie bei dem Leuchtmittel der 55 verwendet sein kann,
• 61 zeigt eine schematische perspektivische Darstellung eines Leuchtmittels gemäß einem weiteren Ausführungsbeispiel,
• 62A zeigt eine weitere schematische perspektivische Darstellung eines Leuchtmittels gemäß einem Ausführungsbeispiel,
• 62B zeigt schematisch einen vergrößerten Ausschnitt der 62A,
• 63A zeigt eine schematische Draufsicht auf ein Leuchtmittel gemäß einem weiteren Ausführungsbeispiel,
• 63B zeigt eine schematische Ausschnittsvergrößerung einer Anschlussstelle des Leuchtmittels gemäß der 63A,
• 64 zeigt eine schematische Draufsicht auf eine Beleuchtungseinrichtung gemäß einem Ausführungsbeispiel,
• 65 und 66 zeigen schematische perspektivische Darstellungen einer Beleuchtungseinrichtung gemäß einem weiteren Ausführungsbeispiel,
• 65 und 67 zeigen schematische Darstellungen einer weiteren Beleuchtungseinrichtung gemäß einem Ausführungsbeispiel,
• 68 zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung gemäß einem weiteren Ausführungsbeispiel,
• 69 zeigt eine schematische Darstellung einer Schaltskizze gemäß einem Ausführungsbeispiel,
• 70 zeigt eine weitere schematische Schaltskizze gemäß einem weiteren Ausführungsbeispiel,
• 71 zeigt eine schematische Darstellung einer Beleuchtungseinrichtung gemäß einem weiteren Ausführungsbeispiel,
• 72 zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung gemäß einem weiteren Ausführungsbeispiel,
• 73 zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung gemäß einem weiteren Ausführungsbeispiel,
• 74 zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung gemäß einem weiteren Ausführungsbeispiel,
• 75 zeigt eine schematische perspektivische Darstellung einer Anzeigevorrichtung gemäß einem Ausführungsbeispiel,
• 76 zeigt eine schematische Draufsicht auf ein grobkörniges Display gemäß einem Ausführungsbeispiel,
• 77 zeigt eine schematische Ansicht eines Badezimmers gemäß einem Ausführungsbeispiel,
• 78 zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung mit einem Leuchtmittel und einer zweiten Lichtquelle gemäß einem Beispiel,
• 79 zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung mit einem Leuchtmittel und einer zweiten Lichtquelle gemäß einem Beispiel,
• 80A zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung gemäß einem weiteren Ausführungsbeispiel,
• 80B zeigt eine schematische Schnittdarstellung der Beleuchtungseinrichtung der 80A,
• 81 zeigt eine schematische Draufsicht auf eine Beleuchtungseinrichtung gemäß einem weiteren Ausführungsbeispiel,
• 82 zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung mit einem Leuchtmittel und einer zweiten Lichtquelle gemäß einem weiteren Ausführungsbeispiel,
• 83 zeigt eine schematische perspektivische Darstellung einer Beleuchtungseinrichtung mit einem Leuchtmittel und einer zweiten Lichtquelle gemäß einem Ausführungsbeispiel.

The invention is explained in more detail below with reference to exemplary embodiments and the associated figures.

• 1 shows a schematic sectional illustration of an organic layer stack between a first and a second electrode according to an embodiment,
• 2A shows a schematic sectional illustration of a luminous means according to an embodiment,
• 2 B shows a schematic perspective illustration of an electrode according to an embodiment,
• 2C shows a schematic sectional view along the line AA 'of FIG 2 B ,
• 3 shows a schematic sectional illustration of a thin-film encapsulation,
• 4A shows a schematic sectional illustration of a luminous means according to a further exemplary embodiment,
• 4B FIG. 11 shows a schematic plan view of the substrate of the luminous means according to FIG 4A ,
• 4C shows a schematic sectional illustration of a luminous means according to a further exemplary embodiment,
• 4D FIG. 11 shows a schematic plan view of the substrate of a luminous means according to FIG 4C ,
• 5A shows a schematic sectional illustration of a luminous means according to a further exemplary embodiment,
• 5B shows a schematic representation of the structure of a translucent illuminant,
• 6th shows a schematic perspective view of a door according to an embodiment,
• 7th shows a schematic perspective illustration of a shop window according to an embodiment,
• 8th shows a schematic perspective front view of a motor vehicle according to an embodiment,
• 9 shows a schematic perspective illustration of a museum room according to an embodiment,
• 10 shows a schematic sectional illustration of a luminous means according to an embodiment,
• 11 shows a schematic perspective illustration of a room with a room divider according to an embodiment,
• 12A shows a schematic sectional illustration of a display with a lighting means according to an embodiment,
• 12B shows a schematic plan view of a television set,
• 13A shows a schematic perspective illustration of a shelf according to an embodiment,
• 13B shows an enlarged section of 13A ,
• 14th shows a schematic sectional illustration of a reflective display according to an embodiment,
• 15th shows a schematic sectional illustration of a luminous means according to an embodiment,
• 16 shows a schematic sectional illustration of a luminous means according to a further exemplary embodiment,
• 17A shows a schematic sectional illustration of a thin-film encapsulation according to an embodiment,
• 17B shows a schematic sectional illustration of a reflective encapsulation according to an embodiment,
• 17C shows a schematic sectional illustration through a thin-film encapsulation according to a further exemplary embodiment,
• 18A shows a schematic perspective illustration of a motor vehicle mirror according to an embodiment,
• 18B FIG. 11 shows a schematic perspective illustration of the motor vehicle mirror according to FIG 18A ,
• 19th shows a schematic perspective illustration of a multi-part mirror according to an embodiment,
• 20th shows a schematic perspective illustration of a multi-part mirror according to a further embodiment,
• 21 shows a schematic perspective illustration of a search mirror according to an embodiment,
• 22nd shows a schematic perspective illustration of a vanity mirror according to an embodiment,
• 23 shows a schematic top view of a decorative element according to an embodiment,
• 24 shows a schematic perspective illustration of a mirror according to a further embodiment,
• 25th shows a schematic sectional illustration of a flexible luminous means according to an embodiment,
• 26th shows a schematic sectional illustration of a flexible luminous means according to a further exemplary embodiment,
• 27 shows a schematic sectional illustration of a luminous means according to an embodiment,
• 28A shows a schematic top view of a window with a blind according to an embodiment,
• 28B shows a schematic sectional view through a slat of the blind of the 28A ,
• 29A shows a schematic view of a window that is covered by a curtain according to an embodiment,
• 29B shows the curtain according to the 29A in a schematic sectional view,
• 29C shows a schematic sectional illustration of a curtain according to a further embodiment,
• 30th shows a schematic view of a window with a curtain according to a further embodiment,
• 31 shows a schematic sectional illustration of a luminous means according to an embodiment,
• 32 shows a schematic perspective illustration of a piece of furniture according to an embodiment,
• 33 shows a schematic perspective illustration of a flexible luminous means according to an exemplary embodiment in the rolled-up state,
• 34A shows a schematic representation of a lighting device according to an embodiment,
• 34B shows a schematic sectional illustration of the lighting device of FIG 34A along the section line A-A ',
• 35A shows a schematic plan view of a lighting means according to an embodiment,
• 35B FIG. 11 shows a schematic sectional illustration of the luminous means according to FIG 35A along the section line A-A ',
• 35C shows a schematic plan view of a multicolored illuminant according to an embodiment,
• 36 shows a schematic sectional illustration of a luminous means according to a further exemplary embodiment,
• 37 shows a further schematic sectional illustration of a multicolored luminous means according to a further exemplary embodiment,
• 38 shows a schematic plan view of first and second electrodes according to a further embodiment of a multicolored luminous means,
• 39 shows a schematic top view of a multicolored illuminant according to a further exemplary embodiment,
• 40A shows a schematic plan view of a lighting device according to an embodiment,
• 40B shows a schematic enlarged detail of the 40A ,
• 41 shows a schematic plan view of a lighting means according to a further embodiment,
• 42 shows a schematic sectional illustration of a luminous means according to a further exemplary embodiment,
• 43 shows a schematic sectional illustration of a further luminous means according to a further exemplary embodiment,
• 44 shows a further embodiment of a lighting means in a schematic plan view,
• 45 shows a schematic sectional illustration of a luminous means according to a further exemplary embodiment,
• 46 shows the illuminant according to FIG 45 in a schematic perspective illustration,
• 47 shows a schematic representation of the CIE standard color table,
• 48A shows a schematic representation of a flirt indicator according to an embodiment with a multicolored illuminant,
• 48B shows a schematic representation of the lighting means according to FIG 48A together with a control device,
• 49 shows a schematic sectional illustration of a luminous means according to an embodiment,
• 50 shows schematically another possible use of a multicolored light source,
• 51 shows a schematic perspective illustration of the use of multicolored illuminants,
• 52 shows a schematic perspective illustration of a luminous means according to an embodiment,
• 53 FIG. 11 shows a schematic representation of a connection point according to an exemplary embodiment, such as is the case with the lighting means of FIG 52 can be used
• 54 FIG. 11 shows a further schematic perspective illustration of a connection point according to an exemplary embodiment, as shown in FIG 52 can be used
• 55 FIG. 14 shows a schematic plan view of a connection point as it is in the case of the lighting means of the exemplary embodiment in FIG 52 can be used
• 56 shows a schematic perspective illustration of a luminous means according to a further exemplary embodiment,
• 57 shows a schematic perspective illustration of a luminous means according to a further exemplary embodiment,
• 58 shows a schematic plan view of a connection point according to one Embodiment as shown in the illuminant of the 57 can be used
• 59 FIG. 11 shows a further schematic plan view of a connection point according to an exemplary embodiment, as is the case with the lighting means of FIG 57 can be used
• 60 FIG. 11 shows a schematic plan view of a further embodiment of the connection point, as it is in the case of the lighting means of FIG 55 can be used
• 61 shows a schematic perspective illustration of a luminous means according to a further exemplary embodiment,
• 62A shows a further schematic perspective illustration of a luminous means according to an embodiment,
• 62B shows schematically an enlarged section of FIG 62A ,
• 63A shows a schematic plan view of a lighting means according to a further embodiment,
• 63B FIG. 11 shows a schematic enlarged detail of a connection point of the lighting means according to FIG 63A ,
• 64 shows a schematic plan view of a lighting device according to an embodiment,
• 65 and 66 show schematic perspective representations of a lighting device according to a further exemplary embodiment,
• 65 and 67 show schematic representations of a further lighting device according to an embodiment,
• 68 shows a schematic perspective illustration of a lighting device according to a further exemplary embodiment,
• 69 shows a schematic representation of a circuit diagram according to an embodiment,
• 70 shows a further schematic circuit diagram according to a further embodiment,
• 71 shows a schematic representation of a lighting device according to a further embodiment,
• 72 shows a schematic perspective illustration of a lighting device according to a further exemplary embodiment,
• 73 shows a schematic perspective illustration of a lighting device according to a further exemplary embodiment,
• 74 shows a schematic perspective illustration of a lighting device according to a further exemplary embodiment,
• 75 shows a schematic perspective illustration of a display device according to an embodiment,
• 76 shows a schematic top view of a coarse-grained display according to an embodiment,
• 77 shows a schematic view of a bathroom according to an embodiment,
• 78 shows a schematic perspective illustration of a lighting device with a lighting means and a second light source according to an example,
• 79 shows a schematic perspective illustration of a lighting device with a lighting means and a second light source according to an example,
• 80A shows a schematic perspective illustration of a lighting device according to a further exemplary embodiment,
• 80B shows a schematic sectional illustration of the lighting device of FIG 80A ,
• 81 shows a schematic top view of a lighting device according to a further embodiment,
• 82 shows a schematic perspective illustration of a lighting device with a lighting means and a second light source according to a further embodiment,
• 83 shows a schematic perspective illustration of a lighting device with a lighting means and a second light source according to an embodiment.

In the exemplary embodiments and figures, identical or identically acting components are each provided with the same reference numerals. The elements shown are not to be regarded as true to scale; rather, individual elements can be shown exaggerated for a better understanding.

the 1 shows a schematic sectional illustration of an organic layer stack 4th between a first 2 and a second electrode 3 according to an embodiment. The first electrode is transparent to visible light and has a TCO (transparent conductive oxide), for example ITO (indium tin oxide). The first electrode is also used 2 as an anode. The second electrode 3 serves as a cathode in the present case. It has an aluminum or silver, for example.

On the first electrode 2 is an organic layer stack 4th applied with the following layers, whereby the order of the layers listed below corresponds to the order within the organic layer stack starting from the cathode: a 1-TNATA layer (1-TNATA = 4,4 ', 4''- Tris (N (naphth -1-yl) -N-phenyl-amino) triphenylamine) with a thickness of about 40 nm, a sp-TAD layer (spTAD = 2,2 ', 7,7'-diphenylamino-spiro-9,9'- biflouren) with a thickness of approx. 20 nm, SEB-010: SEB020 layer with a thickness of approx. 10 nm, a TMM-004: Ir (ppy) 3 (15%) - layer (Irppy = fac-tris (2- phenly-pyridyl) irirdium complex) with a thickness of approx. 10 nm and TMM-04: TER012 layer with a thickness of approx. 30 nm. The present organic layer stack is suitable for emitting white light.

the 2A shows a schematic sectional illustration of a luminous means according to an embodiment. The lighting means comprises a substrate 1 with a first main area 101 on which the first electrode 2 within an active area 5 of the substrate 1 is upset. On the first electrode 2 is an organic layer stack 4th with at least one layer suitable for generating light 401 arranged on which the second electrode 3 is upset. In the present case it is the first electrode 2 on the substrate 1 around the anode and at the second electrode 3 on the organic layer stack 4th around the cathode. The organic layer stack 4th has a doped layer on its outer side facing the cathode 402 with a dopant 410 which acts as an electron donor. This advantageously increases the injection of electrons from the cathode into the organic layer stack. As a dopant 410 For example, cesium, barium or lithium fluoride can be used.

Furthermore, the lighting means according to FIG 2A a thin film encapsulation 6th . The active area 5 with the organic layer stack 4th is inside the thin film encapsulation 6th arranged. The thin film encapsulation 6th is right on the second electrode 3 upset. A thin-film encapsulation, as used, for example, in the illuminant from 2A can be used is for example in connection with 3 described.

The illuminant according to the 2A is designed to be transparent to visible light, in particular to one of the organic layer stack 4th generated light. For this purpose is the substrate 1 designed to be transparent to visible light. It can for example have glass or a plastic or consist of such. For example, a thin glass plate or a flexible plastic film which has one of the plastic materials listed in the general part of the description or consists of such a material can be used as the substrate.

The first electrode too 2 visible light permeable to the substrate is formed. The first electrode 2 can for example consist of a TCO or have such a TCO. The organic material of the organic layer stack 4th is usually designed to be transparent to visible light. In particular, in the present case the doped layer is designed to be transparent to visible light. The organic layer stack 4th can, for example, the layers of the organic layer stack of 1 include. The second electrode 3 is also permeable to visible light, in particular to one of the organic layer stack 4th generated light formed. The second electrode 3 is in the present case designed as a cathode. This can, for example, have a metallic layer that contains aluminum or silver and has a thickness of approximately 30 nm.

Furthermore, an electrode 2 , 3 , which is transparent to visible light, comprise a conductive organic material or consist of such. Here, for example, PEDOT: PSS is suitable as an organic electrode material. PEDOT: PSS can, for example, form the anode. In the case of a suitable conductivity doping, however, it is also possible that the cathode consists of PEDOT: PSS or contains this material.

If the conductivity of the electrode material, in particular of the organic material, is not sufficient to inject sufficient charge carriers into the organic layer stack, thin metal tracks can be arranged between the electrode and the organic layer stack.

the 2 B shows a schematic perspective illustration of an electrode 2 according to one embodiment, comprising a layer of organic conductive material and thin metal traces 201 having that between the organic electrode layer 202 and the organic layer stack 4th are arranged. the 2C shows a schematic sectional view along the line AA 'of FIG 2 B .

The metal tracks 201 are designed in the present embodiment in the form of a grid. The thickness of the metal tracks is preferably a few μm. The distance between directly adjacent grid points is here preferably between 1 mm and 100 mm, including the limits.

Furthermore, the electrically conductive tracks 201 a multilayer structure, for example with three metallic tracks, as in 2C shown. At the two outer panels 2011 , 2012 are protective layers for the middle layer 2013 against corrosion, for example. They can, for example, have chromium, molybdenum, copper or silver or consist of one of these materials. The middle layer 2013 of the multilayer structure can, for example, comprise aluminum or consist of aluminum.

The multilayer structure has a thickness of preferably at least 50 nm and at most 100 nm.

Furthermore, there is also the thin film encapsulation 6th of the illuminant according to the 2A transparent to visible light, in particular to one of the organic layer stack 4th generated light formed. A schematic sectional view through a thin film encapsulation 6th , as they are, for example, according to the 2A can be used is in 3 shown. The thin film encapsulation 6th in the present case each comprises two first barrier layers 601 , which have silicon oxide or consist of silicon oxide and two second barrier layers 602 , which have silicon nitride or consist of silicon nitride. The first barrier layers 601 and the second barrier layers 602 of thin film encapsulation 6th are arranged alternately with regard to their material composition. The thin film encapsulation 6th preferably has a thickness between 0.5 and 5 µm, including the limits.

The barrier layers can, for example, be vapor-deposited, sputtered or deposited on the second electrode by means of a plasma-assisted process, such as chemical vapor deposition (CVD). The barrier layers preferably each have a thickness of at least 30 nm to at most 300 nm. A single barrier layer is particularly preferably approximately 100 nm thick. A thin-film encapsulation preferably comprises at least two to at most eight barrier layers. Typically, the thin film encapsulation comprises three or four barrier layers.

The thin-film encapsulation can furthermore have polymer interlayers, as shown in FIG 17th are described further below in the text.

There is also a protective lacquer layer on the barrier layers 603 upset. The protective lacquer layer 603 can be applied, for example, by means of spin-coating, spraying, knife coating, screen printing or similar techniques. After application, the protective lacquer layer is applied 603 cured by applying heat or UV radiation. As materials for the protective lacquer layer 603 Acrylates, polyacrylates, polyimides and similar materials are suitable. The thickness of the protective lacquer layer is, for example, between at least 30 and at most 40 μm.

The illuminant of the 2A is suitable for emitting light simultaneously from an upper side and from a lower side opposite the upper side, since this is in the organic layer stack 4th The light generated on the way to the top and bottom only passes through elements that are designed to be transparent to visible light.

the 4A shows a schematic sectional illustration of a luminous means according to a further exemplary embodiment. The illuminant according to the 4A has a substrate 1 with an active area 5 on which a first electrode 2 is upset. On the first electrode 2 is an organic layer stack 4th with at least one layer suitable for generating light 401 arranged. On the organic layer stack 4th is another, second electrode 3 arranged. The substrate, the first and the second electrode and the organic layer stack are in the present case permeable to visible light, in particular to one of the organic layer stack 4th generated light formed, such as on the basis of 2A already described.

The active area 5 of the substrate 1 on which the organic layer stack 4th is arranged between the first 2 and the second 3 electrode is surrounded by a fastening area. Within the attachment area 8th comprises the substrate 1 electrically conductive supply lines 9 that with the first electrode 2 and the second electrode 3 are electrically connected. With the supply lines 9 to the first electrode 2 it can be, for example, structures of the first electrode 2 act up in the attachment area 8th are extended into it. In this case, the electrical leads 9 usually the same material as the first electrode 2 . The supply lines 9 to the second electrode 3 are present with one of the first electrode 2 electrically isolated further electrode structure 901 within the active area 5 of the substrate 1 electrically connected, for example by the supply lines 9 also by extending the further electrode structure 901 in the fastening area 8th are formed. The second electrode 3 on the organic layer stack 4th is for example by means of a via 900 with the further electrode structure 901 electrically connected.

Within the fastening area 8th is above the electrical supply lines 9 an adhesive layer 610 arranged with the one cap acting as encapsulation 6th serves, is attached to the substrate. The cap has a cavity over the active area 5 in which the active layer stack 4th is arranged. In the present case, the cap is not in direct contact with the second electrode 3 . Furthermore, the cap is like the substrate 1 , the first 2 and the second electrode 3 as well as the organic layer stack 4th likewise permeable to visible light, in particular to one of the organic layer stack 4th generated light. You can, for example, made of glass or one of those already associated with the substrate 1 be formed in the general description part mentioned translucent plastics.

A getter layer is located on the inside of the cap facing the organic layer stack 611 applied, which is transparent to visible light. For example, one of the materials described above can be used as the getter material. They are particularly suitable for a transparent getter layer 611 Particles of a getter material - for example calcium oxide - that are embedded in a transparent matrix. Solvent-free, curable plastic materials, for example, are suitable for the matrix. The getter layer 611 preferably has a thickness of at most 300 μm, particularly preferably between at least 50 and at most 100 μm.

The electrical supply lines 9 on the substrate 1 are present with a control device 11 electrically connected.

the 4B shows a schematic plan view of the substrate 1 according to 4A . Within the active area 5 are the first electrode 2 and the further electrode structure 901 arranged. To the side of the active area 5 within the fastening area 8th there are electrical supply lines 9 , which in the present case are designed in the form of a grid. The electrical leads on one side of the substrate 1 are continuations of the further electrode structure 901 while the electrical leads 9 continuations of the first electrode on the other side of the substrate 2 are. In the present case, the electrical leads comprise a TCO, for example ITO.

Furthermore, it is also possible that the electrical supply lines 9 comprise or consist of a metal. For example, the supply lines contain or exist 9 of at least one of the following materials or material combinations: Cr / Al / Cr, Cu / Cr, Mo / Al / Mo; Cr, Cu, Al, Ag, Au, Pt.

Assign the electrical leads 9 If a metal is present, the degree of filling of the grille is generally selected to be so low that the electrical leads are not perceived by an observer. In this way the electrical leads 9 are advantageously designed to be transparent to visible light. The degree of filling of the grid is preferably less than 10%, particularly preferably less than 2%.

The electrical supply lines 9 are electrically conductive with electrical connection points 70 , in this case pins 75 , connected to the side of the substrate 1 are arranged. About the pins 75 the lamp can be electrically contacted with a socket or, as in 4A shown with the control device 11 be connected.

the 4C shows a schematic sectional illustration of a lighting means 100 according to a further embodiment. the 4D FIG. 11 shows a schematic plan view of the substrate of the luminous means according to FIG 4C . The light source 100 corresponds to the illuminant of the except for the differences described below 4A and 4B .

In contrast to the illuminant of the 4A and 4B exhibits the organic layer stack 4th no vias. Furthermore, the substrate does not include any further electrode structure.

Instead is the first electrode 2 over the entire area below the organic layer stack 4th within the active area 5 on the substrate 1 educated. On one side of the active area 5 There are electrical supply lines within the fastening area 9 arranged with the first electrode 2 are electrically connected. With these electrical leads 9 it can be, for example, continued structures of the first electrode 2 Act. On the other hand are electrical leads 9 on the substrate 1 attached electrically not to the first electrode 2 are connected. Furthermore, the electrical leads on this side include a bond pad 903 on which a bond wire 902 is arranged with the second electrode 3 is electrically connected.

the 5A shows a schematic sectional view through a lighting means 100 according to a further embodiment. The light source 100 includes as a substrate 1 a window glazing. A first electrode is on the substrate 2 applied, on which an organic layer stack continues 4th with at least one layer suitable for generating light 401 is upset. With the organic layer stack 4th it can, for example, be a stack of layers 4th act as he already based on the 1 has been described. On the organic layer stack 4th is a second electrode 3 upset. As an encapsulation 6th comprises the illuminant according to FIG 5A a second window glazing that is on top of the second electrode 3 with an adhesive layer 610 is glued on. A transparent adhesive, for example, is suitable as the adhesive. This adhesive is preferably also permeable trained for visible light. Nagase or Three-Bond, for example, are suitable as adhesives.

Substrate 1 , Electrodes 2 , 3 , Encapsulation 6th , organic layer stack 4th and adhesive layer 610 are designed to be transparent to visible light. The light source 100 is therefore suitable for it from its top 100a and its bottom 100b To emit light. Furthermore, a viewer can through the illuminant 100 see through it when not in use. The illuminant is therefore suitable for use as glazing, for example in doors, windows, room dividers, furniture or the like, with the glazing being able to serve as a source of illumination.

the 5B shows a schematic representation of the structure of a lighting means 100 , which is designed to be essentially transparent to visible light and is integrated into glazing. As a substrate 1 In the present case, a glass pane with an active area is used 5 on which a first electrode 2 is upset. In the present case, the electrode is also designed to be transparent to visible light and includes a TCO, for example ITO. The first electrode is used to represent certain shapes, for example lettering or a logo 2 structured according to the desired form, in this case in the text "Info 1".

An organic layer stack is located on the first electrode within the active area 4th , for example as it is in 1 has already been described, applied. A second electrode is placed on the organic layer stack 3 , which is also permeable to visible light and in the present case serves as a cathode. The second electrode 3 is applied over the entire surface of the organic layer stack 4th upset. However, it is also conceivable that the first electrode 2 over the entire surface of the substrate and the second electrode 3 in the shape that the luminous surface of the luminous means is to form, onto the organic layer stack 4th is upset. On the second electrode 3 is a second pane of glass as encapsulation 6th upset. The dimensions of the encapsulation 6th are preferably the same as the dimensions of the substrate 1 chosen. In this way, glazing with a light source is created 100 whose luminous surface is designed in the desired manner, for example in the form of lettering or a logo.

The second sheet of glass that acts as an encapsulation 6th is used, for example, by means of an adhesive layer permeable to visible light 610 be attached to the substrate. The adhesive layer 610 can be applied over the entire surface to the substrate and to the second pane of glass, or only within a fastening area 8th outside the active area 5 .

Contacting the active area 5 can for example by means of electrically conductive leads 9 how to use the 4A until 4D have been described.

the 6th shows a schematic perspective view of a door 300 according to an embodiment. The door 300 has two door leaves 301 that are designed to be transparent to visible light. These have, for example, glass or are made of glass. In every door leaf 301 is a light source 100 integrated, which is designed to be permeable to visible light. With the help of the bulbs 100 whose luminous surface each form a label, it is possible to use luminous signposts in doors 300 to integrate. Such doors 300 with illuminated signposts can be used, for example, in museums, convention centers, hotels or the like. The light source can either be in the door 300 be integrated, as with the 5A and 5B already described, or it may be with the illuminants 100 also be flexible lighting means that are transparent to visible light and are attached to the door with an adhesive layer, for example. A flexible illuminant which is suitable for being glued on is described, for example, in connection with FIG. FM9.

Are the bulbs 100 in the door 300 integrated so can be on the substrate 1 , i.e. the window glazing on which the first electrode 2 is applied, electrical leads 9 be applied, for example in connection with the 4A until 4D have already been described. The electrical supply lines 9 can for example with connection points 70 be electrically conductively connected, which are designed as parts of the door hinges, wherein the electrically conductive parts run within the door hinges. The door hinges, in turn, can be connected to electrical cables that run within the door frame.

Next is in the 6th an emergency lighting 395 shown that a lamp described here 100 or a lighting device described here 1000 includes. The emergency lighting 395 is activated, for example, in the event of a power failure and includes an autonomous power supply or is supplied with the necessary operating power by an emergency power generator. The lamps described here 100 and lighting equipment 1000 are particularly suitable for use as emergency lighting, since they can generate light of sufficient brightness with a relatively low power consumption.

7th shows a schematic perspective illustration of a shop window according to an embodiment with four lighting means 100 , the are designed to be transparent to visible light. Brand names “Trademark 1” and “Trademark 2” and logos “Logo 1” and “Logo 2” can be displayed with the lamps. As in connection with the 5A and 5B described, it can be with the light sources 100 be light sources that are integrated into the glazing of the shop window or a flexible light source that is glued to the inside of the glazing with an adhesive layer.

the 8th shows a schematic front view of a motor vehicle 310 according to an embodiment. In a window 20th , for example the windshield, two light sources are integrated here 100 that are designed to allow visible light to pass through and are suitable for displaying information "Info 1" and "Info 2" for the driver. Alternatively it is also possible - as already in connection with the 7th and 6th described - that the two bulbs 100 are flexible and are glued to the windshield from the inside.

Next shows the 8th a car interior lighting 396 . The vehicle interior lighting is, for example, by means of a lamp as described here 100 or a lighting device described here 1000 educated.

the 9 shows a schematic perspective representation of a museum room, its ceiling elements 320 include glazing. The glazing of a ceiling element has a light source over part of or over the entire surface 100 or a lighting device 1000 that is permeable to visible light. The glazing can be, for example, glazing with an integrated light source 100 act as they are based on the 5A and 5B has already been described. Alternatively, the illuminant can also be applied to the inside of the glazing, for example by gluing.

The glazing of the ceiling elements of the museum room according to 9 is therefore suitable for lighting the room during the day using daylight. In poor lighting conditions, for example during the night, the light sources can 100 the glazing can be used as additional light sources for the room.

The glazing of the ceiling elements of the museum room of the 9 can still be made milky. For this purpose, either the glazing that serves as the substrate or the glazing that serves as the encapsulation or both are made milky.

the 10 shows a schematic sectional illustration of a lighting means 100 according to an embodiment. With the light source 100 according to 10 are encapsulation 6th and substrate 1 designed as glazing, for example in the case of the illuminant according to FIGS 5A and 5B . Such glazing can be used, for example, as a window pane of a window 20th but also a door 300 or serve as a piece of furniture. During the day, such glazing can be used as a window 20th can be used, i.e. visible light from outside can penetrate the room unhindered. At night the light source can 100 activated so that the glazing serves as a source of illumination for the room. There is also a mirror blind on the outside of the glazing 22nd intended to protect privacy, which prevents uninvited looks from outside. In addition, there is the mirror blind 22nd suitable from the illuminant 100 reflect emitted light. Because of the back reflection through the mirror blind 22nd the degree of use of the light emitted by the illuminant increases advantageously 100 is sent out. It is also possible that it is at the blind 22nd a classic blind or a PDLC shutter. In addition to a PDLC shutter, other types of glass that can be darkened by applying an electrical voltage are also possible.

11 shows a schematic perspective illustration of a room with a room divider according to an embodiment. The room divider 330 has two room divider elements 331 on with glazing within a frame, the glazing being a light source 100 comprises, which is formed transparent to visible light. The light source 100 is either integrated into the glazing, for example in connection with the 5A and 5B written on or glued to the glazing. The room divider elements 331 can be advantageously used due to their lighting function to illuminate room areas that are separated by the room dividers.

Here is the room divider 330 modular. It comprises two room divider elements 331 that can be connected to one another by plug connections. For this purpose, the frame of the room divider element comprises a sleeve on one of its side faces 332 , which is designed, for example, in the manner of a cylinder. The side face of the frame, that of the side face with the sleeve 332 opposite is with pins 333 provided, which are designed such that they are in the sleeves 332 can be fitted. By inserting the pins of a room divider element into the sleeves of a further room divider element, two room divider elements can be inserted 331 be connected to each other. In particular, there is also an electrical connection between the room divider elements 331 by means of the sleeves 332 and the pens 333 possible. The room divider 330 forms a large-area lighting device.

12th shows a schematic sectional illustration of a display according to an embodiment. With the display 335 it can be, for example, the display of a television, an LCD, an OLED, or a plasma screen. The front glass of the display is used as the substrate 1 used for a lamp that is transparent to visible light. The first electrode is on the front glass 2 applied, which includes a TCO and is therefore designed to be transparent to visible light. On the first electrode 2 is an organic layer stack 4th applied, for example, based on the 1 is described. A second electrode is located on this organic layer stack 3 , in the present case also comprising a TCO, applied.

One of the following TCO materials, for example, is particularly suitable as TCO for the cathode: ITO, ATO, zinc oxide.

On the second electrode 3 is another glass plate as encapsulation 6th upset. This can, for example, with an adhesive layer 610 on the second electrode 3 be glued on. In the present case, the organic layers are designed in such a way that the radiation from the organic layer stack occurs predominantly through the encapsulating glass pane. In the present case, the illuminant can 100 that is in the front window of the display 335 is integrated, can be used as a source of illumination when the display is switched off. For this purpose, the lighting means is preferably designed to be dimmable. When the lamp is switched off, the content of the display 335 can be perceived by a viewer, since the illuminant is designed to be permeable to visible light.

the 12B shows a schematic plan view of a television set 336 with a display 335 as it is in conjunction with the 12A is described.

13A shows a schematic perspective illustration of a shelf 340 according to an embodiment. the 13B shows a section of the 13A . The shelve 340 includes two side panels with bars 83 which are hollow inside and include electrical cables. The side panels with the bars 83 form a rod system, as it is, for example, based on the 68 is described. These poles 83 are provided shelves 341 to wear. To do this, include the shelves 341 appropriately shaped brackets on the sides 342 . In the present case, these are designed according to the rods of the shelf side parts in the manner of a cut-open cylinder. However, it is also conceivable that the rods 83 and the brackets 342 are angular. The shelves 341 in the present case comprise a frame 343 in which a glazing with a light source permeable to visible light 100 is introduced. For electrical contacting, the brackets include 342 the shelf boards in this case a pen 71 , which is in an electrically conductive recess 73 inside the bars 83 is used as in 13B shown. The poles 83 the side parts are preferably hollow. In this way, the cables that are used to make contact with the plugs can be routed within the rods. Shelves, like the shelf 340 according to the 13B shows, can also be used in showcases or other pieces of furniture, for example.

14th shows a schematic sectional illustration of a reflective display 335 . A reflective display 335 includes a reflective element on its back 337 , on the pixel 338 are arranged. Reflective displays 335 do not require backlighting, but reflect due to the reflective element 337 Ambient light in such a way that the display content can be shown. Hence, reflective displays are 335 depending on the ambient light. These can no longer be read in the dark. On the radiation-emitting front 335a of the reflective display 335 an illuminant that is permeable to visible light is applied, for example on the basis of the 5A described. In the present case, this luminous means is designed in such a way that it predominantly emits radiation in the direction of the reflective element. For better color rendering, the light source can 100 be slightly colored, for example in the color of a light magenta. For this purpose, for example, the encapsulation 6th or the substrate 1 or both colored in the desired color. The light source is preferred with an index matching material on the front 335a of the reflective display to avoid reflections. The illuminant can be varied in color, for example in such a way that the RGB color space is covered, and the reflective display can 335 can continue to be switched fast enough, time-sequential operation in RGB is also possible. In this time-sequential operation, the display is preferably operated at frequencies of at least 70 Hz, particularly preferably at least 100 Hz.

the 15th shows a schematic sectional illustration of a lighting means 100 according to an embodiment. The electrodes 2 , 3 , the substrate 1 who have favourited encapsulation 6th and the organic layer stack 4th are permeable to visible light, in particular to that from the organic layer stack 4th generated light. On the outside of the substrate 1 , for example by A glass plate can be formed is a reflective element 337 , which in the present case is a reflective layer sequence. The reflective layer sequence comprises a copper layer 337b , a layer of silver 337a and a protective lacquer layer 337c , the silver layer 337a on the substrate 1 is applied, the copper layer 337b on the side of the silver layer facing away from the substrate 337a and the protective lacquer layer on the copper layer 337b . Because the reflective layer sequence along the bottom 100b of the lamp 100 is formed, the lighting means 100 no longer emit light from it, but only from its upper side 100a . Furthermore, the reflective element reflects light that passes through the first electrode 2 and the substrate 1 passes through it towards the top 100a of the lamp 100 .

As an alternative to the layer sequence described above with a silver layer, a copper layer and a protective lacquer layer, the reflective element can be used 337 For example, a dielectric mirror can also be used which, like the layer sequence above, is applied to the outside of the substrate.

The reflective element 337 such as a reflective layer sequence or a dielectric mirror, for example, can continue to be on the outside of the encapsulation 6th applied or between substrate 1 and first electrode 2 as well as between encapsulation 6th and second electrode 3 to be appropriate. Is the reflective element on the outside of the encapsulation 6th or between encapsulation 6th and second electrode 3 arranged, the light source sends 100 Light from its underside 100b the end.

A lamp 100 as it is in the 15th is shown, it allows in particular to serve as a mirror when the light source is deactivated and when the light source is in operation 100 as a source of illumination. With such a light source 100 can either be the entire light-emitting front 100a serve as lighting or as a mirror. Furthermore, it is also possible that the entire light-emitting front side 100a serves as lighting and as a mirror. Furthermore, the light-emitting front side 100a also be divided into areas so that part of the light emitting front side 100a serves as a mirror and another part as a source of illumination.

For example, the lighting means can also be designed so that it emits light both from its front side 100a as well as from its back 100b radiates. For example, using the so-called cavity effect, it is possible that light with different light properties emerges from different sides of the illuminant. Such a light source is, for example, in the German patent application 102006046196.7 described, the disclosure content of which is hereby expressly incorporated by reference.

16 shows a schematic sectional illustration of a lighting means 100 according to a further embodiment. The following elements of the light source 100 are designed to allow visible light to pass through: encapsulation 6th , Substrate 1 , first electrode 2 and organic layer stack 4th . As a substrate 1 For example, a glass plate or a plastic film can be used that is transparent to visible light.

The first electrode 2 can for example be formed from a TCO.

With the organic layer stack 4th it can be a layer stack, as it is based on the 1 has already been described.

When encapsulating 6th it can be, for example, a glass cap, a glass plate, a plastic cap or a plastic plate.

Furthermore, on the to the organic layer stack 4th facing inside of the cap or the plate, a getter material can be applied, which is also designed to be permeable to visible light. Furthermore, it can be with the encapsulation 6th be a thin-film encapsulation which has at least one barrier layer. The barrier layer can for example consist of SiO _x or SiN _x or have one of these materials. Furthermore, the thin-film encapsulation 6th also first and second barrier layers 601 , 602 have that alternate in terms of their material composition. Intermediate polymer layers, for example, can be arranged between the alternating barrier layers, see also, for example, FIG 3 .

17A shows a schematic sectional illustration of a thin-film encapsulation 6th with alternating barrier layers 601 , 602 , with an intermediate polymer layer between two adjacent barrier layers of different material composition 604 is appropriate. The intermediate barrier layers can be, for example, two barrier layers 601 act, which have SiO _x and two barrier layers 602 that have SiN _x as used in conjunction with 3 have already been described. As in the embodiment according to 3 are the barrier layers 601 , 602 arranged alternately with regard to their material composition, that is to say the first barrier layers 601 with second barrier layers 602 inside the thin film encapsulation 6th alternate with the first and the second Barrier layers 601 , 602 have different material compositions. In contrast to thin film encapsulation 6th according to the 3 are the barrier layers 601 , 602 however, through polymer interlayers 604 separated from each other.

As an alternative to using a separate reflective element 337 , such as the reflective layer sequence described above or the dielectric mirror, for example, is the second electrode 3 of the illuminant according to the 16 designed to be reflective for visible light. For this purpose, the second electrode comprises 3 for example aluminum or silver or consists of one of these materials. Such a lighting means is also suitable for serving as a mirror and / or lighting source, as is the lighting means according to FIG 15th .

In order to obtain a light source that can serve as a mirror and / or as a lighting source and has no additional reflective element, it is also possible to use the second electrode 3 to make it transparent to visible light, for example by using a TCO as the electrode material, and instead the encapsulation 6th , the substrate 1 or the first electrode 2 to be reflective.

With a reflective encapsulation 6th it can be, for example, a polished metal cap.

17B shows a schematic sectional illustration through a reflective encapsulation 6th according to an embodiment. This is a cap that is either already designed to be reflective, for example by being made of a polished metal, or a cap that is designed to be non-reflective. On to the organic layer stack 4th facing inside of the cap is a reflective element 337 , for example a reflective layer is applied. The reflective layer on the inside of the cap can be, for example, a metallic layer which, for example, has silver or consists of silver. Furthermore, the reflective layer can also have a plurality of layers. There is also a getter layer on the reflective layer 611 applied from a getter material that is transparent to visible light.

17C shows a schematic sectional illustration through a thin-film encapsulation 6th according to a further embodiment. The thin film encapsulation 6th like thin film encapsulation 6th according to 17A alternating barrier layers 601 , 602 on that through polymer interlayers 604 are separated from each other. In contrast to thin film encapsulation 6th according to 17A exhibits the thin film encapsulation 6th according to 17C a reflective element 337 , for example a reflective layer sequence, as shown on the basis of the 15th has already been described. The reflective layer sequence comprises a silver layer 337a that are on the outermost barrier layer 602 is upset. On the silver layer 337a is a copper layer 337b applied, on which in turn a protective lacquer layer 337c is arranged. Due to the reflective layer sequence, the thin-film encapsulation is reflective and can be used as a reflective encapsulation.

Another option, a light source 100 to form, in which it is possible to switch back and forth between mirror function and lighting function, consists in the substrate 1 to be reflective, while the other elements of the illuminant, which are in the organic layer stack 4th generated light on the way to the light emitting front 100a must go through, especially the second electrode 3 , the organic layer stack 4th and the encapsulation 6th are designed to be transparent to visible light. A reflective substrate 1 can for example comprise metal or consist of a metal. As a reflective substrate 1 For example, a metal foil such as a stainless steel foil can be used. In particular, a mirror can be used as the substrate. A laminate of plastic films, onto which a metal film, for example made of aluminum, is laminated, is also suitable as a reflective substrate. Furthermore, the substrate can be a reflectively coated glass substrate.

Alternatively or in addition to a reflective substrate 1 can also use the first electrode 2 be reflective. Such a material can, for example, have or consist of one of the following materials: aluminum, silver.

It is also possible that the thin-film encapsulation 6th per se forms a dielectric mirror or a Bragg mirror. The material of the first and second barrier layers 601 , 602 and the thickness of these layers is then selected accordingly.

the 18A shows a perspective schematic representation of a motor vehicle mirror 315 with a lamp 100 , in which it is possible to switch between the lighting function and the mirror function, for example in connection with the 15th until 17C have been described. In the present case, the illuminant has a luminous surface that is designed according to the lettering “Info 1”. One of the electrodes 2 , 3 be structured, as based on the 5B described. In contrast to the 5B knows that Bulbs 100 according to the 18A but a reflective element 337 on, for example, an additional reflective layer sequence. Furthermore, one of the elements of the illuminant can also 100 , for example one of the electrodes 2 , 3 , the substrate 1 or the encapsulation 6th be reflective, as described above. In this way, logos, symbols or other information can be displayed brightly against the background of a mirror surface. In the motor vehicle mirror 315 could use these bulbs 100 For example, warnings such as distance messages when parking are displayed.

the 18B shows a schematic perspective illustration of the motor vehicle mirror 315 according to the 18A . As a substrate 1 a mirror is used in the automobile mirror. The substrate 1 is connected to a holder. Within an active area 5 a first electrode is on the substrate 2 upset. The first electrode 2 is designed to be transparent to visible light, for example by being formed from a TCO. Furthermore is the first electrode 2 structured according to the lettering "Info 1". On the structured first electrode 2 is an organic layer stack 4th applied, which is permeable to visible light. On the organic layer stack 4th is still the second electrode 3 applied, which is also designed to be transparent to visible light. As an encapsulation 6th a glass plate is used, which is attached over the second electrode. The organic layer stack 4th and the second electrode 3 are fully within the active area 5 upset. So that the light source 100 has a luminous area which is structured according to a lettering, it is sufficient to use the first electrode 2 to structure. The use of a mirror as a substrate 1 allows the illuminant to be installed in the motor vehicle mirror in a simple manner 315 to integrate.

19th shows a schematic perspective illustration of a multi-part mirror 345 according to an embodiment. Such a mirror can be used, for example, as a bathroom or cloakroom mirror. The mirror 345 includes a middle part 345a and two pivotable side wings arranged laterally of the central part 345b (indicated in the figure by arrows). The side wings 345b each include a lamp 100 , in which it is possible to switch between reflective and illuminating functions and the luminous area of which fills the area of the side wing almost over the entire area. In good lighting conditions, the side wings can 345b can be used as normal mirrors. In poor light conditions, for example in the dark or in twilight, one of the two side wings or both side wings can be used 345b of the mirror can be switched on as a source of illumination in order to illuminate the viewer. Furthermore, the illuminated side wings 345b serve as a decorative lighting element.

20th shows how that 19th a schematic perspective illustration of a multi-part mirror 345 according to a further embodiment. This mirror is also a three-part mirror with a central part 345a and two side wings arranged to the side of the central part 345b , in the bulbs 100 are introduced, in which you can switch back and forth between reflective and illuminating function. Such a mirror can also be used, for example, as a bathroom or cloakroom mirror.

21 shows a schematic perspective illustration of a search mirror 350 according to an embodiment. The search mirror 350 comprises a mirror element 351 and a holding element 352 to which the mirror element is attached. The holding element 352 is executed here bent to by means of the mirror element 351 to be able to see places that are difficult to access. Such a search mirror can be a dental mirror, for example.

The search mirror 350 includes on its mirror element 351 a lamp 100 , in which you can switch back and forth between reflective and illuminating functions. The lighting means can comprise part of the mirror surface or almost the entire mirror surface. It therefore offers the possibility of illuminating and viewing difficult-to-access places at the same time. Such a mirror can also be used in the home, for example to search for lost objects behind / under furniture that is difficult to move.

22nd shows a schematic perspective illustration of a vanity mirror according to an embodiment. In the present case, the make-up mirror is integrated into a cosmetic set, such as a powder compact. Furthermore, the make-up mirror includes a light source in which it is possible to switch back and forth between the reflective and illuminating function. The lamp can be activated in poor visibility. When the brightness is low, the make-up mirror is 355 therefore it can be used as a cosmetic mirror and as face lighting at the same time. The light source 100 can encompass part or almost all of the mirror surface.

the 23 shows a schematic plan view of a decorative element 360 according to an embodiment. The decorative element 360 is here designed as a blinking poinsettia. A base of the star is designed to be reflective, with partial areas of the star Illuminants are introduced, in which it is possible to switch back and forth between reflective and illuminating functions. These illuminants can also be colored, for example. In particular, it can also be multicolored illuminants 100 act as described below.

the 24 shows a schematic perspective illustration of a mirror 365 according to a further embodiment. The mirror 365 is intended for use in domestic wet areas. In the present case, the mirror has an outer area that is provided with a light source 100 is provided, in which you can switch back and forth between illuminating and reflecting function.

the 25th shows a light source in a schematic sectional view 100 according to an embodiment of a lighting means described here.

The one in the 25th illustrated illuminant 100 it is a flexible light source. The flexibly designed light source 100 is characterized, among other things, by the fact that it can be bent to a certain extent without being damaged by bending. The flexible lighting means can preferably be bent several times without being damaged in the process. The illuminant is then suitable for withstanding a large number of bending cycles without damage.

The light source 100 the 25th comprises a substrate 1 . With the substrate 1 it is a flexible, metallic substrate 1 . The metallic substrate 1 contains or consists of one of the following metals: aluminum, stainless steel, gold, silver. Preferably the substrate is 1 designed as a metal foil with a thickness of at most 1 mm, particularly preferably at most 0.5 mm. It is also possible that the flexible, metallic substrate 1 is designed as a central sheet with a thickness of at least 3 mm and a maximum of 4.75 mm or as a thin sheet with a thickness of at most 3 mm.

Directly on the first main area 101 of the substrate 1 is a first electrode 2 upset. At the first electrodes 2 it is, for example, a cathode of the light source 100 .

The cathode is suitable for impressing electrons into the organic layer stack following the cathode. For this purpose, the cathode has a material that is characterized by a low work function for electrons. The cathode contains or consists preferably of alkali metals or alkaline earth metals. Furthermore, the cathode can comprise one or more layers which consist of silver, aluminum and / or platinum or contain at least one of these metals.

The organic layer stack is preferably directly on the cathode 4th upset. The organic layer stack 4th comprises at least one layer 401 that is suitable in the operation of the lamp 100 To produce light.

The organic layer stack 4th can be further organic layers, such as a hole-conducting layer 409 or an electron-conducting layer 408 , include. The electron-conducting layer is preferably directly adjacent to the cathode. The hole-conducting layer is on the side of the light-generating layer facing away from the cathode 401 of the layer stack 4th arranged and preferably adjoins the anode of the illuminant 100 .

Preferably directly on the organic layer stack 4th is a second electrode 3 arranged. At the second electrode 3 it is, for example, an anode of the light source 100 .

The anode is intended to inject holes into the organic layer stack. The anode has a material that has a high work function for electrons. For example, indium tin oxide (ITO - Indium Tin Oxide) is a suitable material for forming the anode.

Preferably directly on the second electrode 3 is a planarization layer 7th upset. The planarization layer 7th consists of or contains an organic material.

According to the in connection with the 25th The described embodiment are additional scattering centers in the planarization layer 701 brought in. At the scattering centers 701 it can be, for example, particles of at least one of the following materials: luminescence conversion material, color filter material, diffuser material. The materials already mentioned in the general part of the description can serve as luminescence conversion materials, for example.

Color pigments, for example, which are dispersed in a matrix material, are suitable as color filter materials. The matrix material is, for example, transparent plastics such as acrylate, polyacrylate or polyimide. The color filter material only lets through light of a certain color - for example green, red or blue light.

The diffuser material is, for example, light-scattering particles such as titanium oxide, silicon oxide or particles of the luminescence conversion materials described above, which can be embedded in a matrix.

Preferably directly on the planarization layer 7th is an encapsulation 6th upset. The encapsulation 6th is formed by a plurality of barrier layers, which preferably contain an inorganic material. As part of a thin-film encapsulation, the barrier layers form the flexible encapsulation of the illuminant. For example, on the planarization layer 7th alternating first and second barrier layers 601 , 602 upset. The first barrier layers exist 601 made of a silicon oxide, the second barrier layers 602 then consist of a silicon nitride, see also the 3 , in which such a thin film encapsulation is explained in more detail.

Overall is related to the 25th a flexible light source 100 with a metallic substrate 1 described.

The illuminant according to the 25th is intended to receive light from its top 100a to emit. For this purpose, the elements that the light generated in the organic layer stack on its way to the top 100a must go through, in particular the organic layer stack 4th itself, the second electrode 3 and the encapsulation 6th designed to be transparent to visible light. The planarization layer is also there 7th designed to be transparent to visible light.

The first major face 101 of the substrate 1 of the lamp 100 can be done by polishing the main surface 101 reflective for that in the organic layer stack 4th generated light be formed. In connection with the 25th The illuminant described is then a flexible, reflective illuminant.

the 26th shows, in a schematic sectional illustration, an exemplary embodiment of a luminous means described here.

In connection with the 26th described illuminant 100 it is a flexible light source. The flexible light source 100 is preferably designed to be flexible in such a way that it can be rolled up onto a roller and unrolled from a roller without being damaged in the process.

The light source 100 comprises a substrate 1 . The substrate 1 is designed as a plastic film. That is called the substrate 1 has a thickness of at most 1 mm, preferably at most 0.5 mm, particularly preferably between at least 50 to at most 500 μm, for example 250 μm, and contains or consists of a plastic. Suitable plastics include PE, polyimide and similar plastics.

Preferably directly on the first main surface 101 of the substrate 1 is a first electrode 2 applied, which is preferably transparent to visible light. That is, the first electrode 2 is - as described above - designed to be at least partially permeable to the light generated by the lighting means during operation. The first electrode 2 can for this purpose consist of a translucent material and / or be designed in the form of a grid.

Preferably directly on the first electrode 2 is the organic layer stack 4th upset. The organic layer stack 4th comprises at least one light-generating organic layer 401 . Furthermore, the organic layer stack comprises 4th an outermost organic layer 402 that for example directly to the second electrode 3 borders. The outermost organic layer is doped with a dopant 410 endowed. It is preferably the dopant 410 of the doped layer - as explained above - in order to emit the largest possible atoms or molecules that are suitable for emitting electrons - n-dopant - or holes - p-dopant. Furthermore, the dopant has a low diffusion constant within the organic layer stack 4th on. For this purpose, the dopant is formed from the largest possible atoms or molecules. For example, cesium proves to be a suitable dopant.

Preferably directly on the organic layer stack 4th is the second electrode 3 upset. The second electrode 3 is - as described above - designed to be translucent. That is, the second electrode 3 is made of a translucent material and / or lattice-shaped.

Preferably directly on the second electrode 3 is a translucent encapsulation 6th upset. The encapsulation 6th is preferably formed by a translucent plastic film. In this case, the transparent encapsulation 6th made of the same material as the substrate 1 be educated. However, it is also conceivable for the encapsulation to be formed from one or more barrier layers, as is the case, for example, in connection with the 3 are described. The encapsulation 6th In this case, it is designed as a flexible thin-film encapsulation.

Overall is related to the 26th a translucent, flexible lamp 100 described. In particular because of the particularly flexible substrate designed as a plastic film 1 and the particularly flexible encapsulation designed as a plastic film or thin-film encapsulation 6th is the light source 100 so flexible that it can be rolled up onto a roll and unrolled from a roll without being damaged in the process.

the 27 shows an embodiment of a lamp described here 100 in a schematic sectional view.

With the help of the 27 explained illuminants 100 it is a flexible light source. The flexible light source 100 the 27 is characterized, among other things, by the fact that it can be bent to a certain extent without being damaged in the process. The flexible lighting means can preferably be bent several times without being damaged in the process. The illuminant is then suitable for withstanding a large number of bending cycles without damage. The light source 100 can be designed so flexibly that the lighting means - without experiencing any negative impairment - can be rolled up onto a roller and unrolled from a roller.

The light source 100 comprises a substrate 1 . With the substrate 1 is a flexible laminate substrate. That is called the substrate 1 of the lamp 100 is designed as a laminate.

The laminate includes a first layer 104 , which is formed from a plastic. The laminate further comprises a second layer 103 formed from a glass. The laminate also includes a third layer 104 which in turn is made of a plastic. For example, the layers of the laminate are glued to one another. However, it is also possible that the second layer 103 of the laminate formed from a glass is coated with a plastic. The substrate 1 des in connection with the 27 described illuminant 100 is designed to be flexible and can also be translucent. Compared to a simple plastic film, a laminate is particularly well suited, for example, to moisture from the electrodes and the organic layer stack 4th keep away.

Preferably directly on the first main surface 101 of the substrate 1 is a first electrode 2 upset. The first electrodes 2 the organic layer stack follows 4th after, the at least one light-generating organic layer 4th includes.

The second electrode is directly on the organic layer stack 3 upset.

The second electrode 3 encapsulation follows 6th of the lamp 100 after. The encapsulation can be a thin-film encapsulation which - as described further above - comprises one or more barrier layers. The encapsulation can also be a film, for example a plastic or metal film. It is also possible that the encapsulation as well as the substrate 1 of the lamp 100 is designed as a laminate.

the 28A shows a window 20th that of a blind 22nd is covered, in a schematic plan view according to an embodiment.

the 28B shows a schematic sectional view through a lamella 21 the blind 22nd as in 28A is shown. The lamella 21 the blind 22nd is as a flexible light source 100 formed, similar to, for example, in connection with the 25th is described.

This preferably comprises lighting means 100 a substrate 1 , which is made opaque. With the substrate 1 it can, for example, be a metallic substrate 1 or a plastic substrate. As a substrate 1 In particular, the slat of a conventional blind can be used.

On the lamella as a substrate 1 of the lamp 100 a layer sequence is then applied, the at least one first electrode 2 , an organic layer stack 4th , a second electrode 3 and an encapsulation 6th includes. The encapsulation is preferably designed to be translucent.

With the blinds closed 22nd are the slats 21 the blind 22nd preferably so relative to the window 20th oriented that the opaque substrate 1 outwards and the translucent encapsulation inwards - that is, into the room - is directed. In this way, the blind embodied in this way can be used as a lighting device for the room.

This is the organic layer stack 4th preferably suitable for generating white light similar to daylight. The organic layer stack 4th can for example, as in connection with the 1 explained, be constructed. In this way, lighting is advantageously implemented which is similar to daylight in terms of radiation direction, radiation characteristics and light impression. That way is the one from the blind 22nd A darkened room can be illuminated with a particularly natural-looking light. With the help of such a blind, a room can for example be protected from the outside against prying eyes and at the same time be illuminated. Furthermore, it is also possible that the organic layer stack 4th is suitable to produce colored light. Such a blind can, for example, also have a decorative function in addition to the darkening function.

the 29A shows a window in a schematic plan view 20th that from a curtain 23 is covered according to one embodiment.

the 29B shows the curtain 23 in a schematic sectional view.

The curtain is for example as a flexible light source 100 trained as it is in conjunction with the 26th or 27 is described. That is called the curtain 23 comprises a flexible substrate 1 , which is formed by a plastic film or a laminate. The substrate 1 is preferably made opaque.

The encapsulation of the light source 100 is designed as a translucent film, a translucent laminate or a translucent thin film encapsulation. The opaque substrate is directed towards the window. The translucent encapsulation 6th is into the room, from the window 20th directed away.

The curtain 23 can for example by a rod 24 or a rope with a power supply 10 connected and energized by this. A curtain formed in this way 23 enables a room to be illuminated with light that can be very similar to daylight in terms of radiation direction, radiation characteristics and color.

In connection with the 29C is a schematic sectional view of a further embodiment of a curtain 23 described. In this exemplary embodiment, there is a light source 100 on a textile carrier, for example a conventional textile curtain 25th , upset. In this case the light source is 100 preferably as a flexible and optionally translucent illuminant 100 formed, for example, in connection with the 26th or 27 is described. The textile material of the curtain 25th is doing the window 20th facing the lamp 100 is the window 20th turned away.

The attachment of the light source 100 on the curtain 25th is preferably done via a Velcro connection. This is on the second main area 102 of the substrate 1 of the lamp 100 a Velcro fastener, for example, glued on - compare also that in connection with the 49 described embodiment of a lamp described here 100 . The light source 100 can be easily removed from the textile curtain in this way 25th solve, for example, to wash the textile curtain or a defective lamp 100 particularly easy to exchange. In the event that the illuminant is designed to be translucent, it is advantageous that the curtain remains visible through the illuminant.

the 30th shows a window in a schematic plan view 20th that of a textile curtain 25th is covered.

In contrast to the embodiment of 29C cover the bulbs 100 In this exemplary embodiment, the textile material is not completely, but is applied to the curtain in the form of individual, smaller applications. In this way it is possible, for example, to use light sources 100 of predeterminable size and shape on the textile curtain 25th to raise. The light sources can form, for example, stylized stars, moons, hearts or even lettering. A curtain formed in this way 25th is particularly suitable as a night light in a children's room, as Christmas lighting or for advertising purposes in a shop window. With the light source 100 it is preferably a flexible illuminant that is reflective and / or multi-colored.

Contacting the individual lamps 100 can via conductor tracks 26th take place. The conductor tracks 26th are on the textile curtain 25th attached or in the curtain 25th woven in. An energization of the lamps 100 is in turn via a rope or a pole 24 possible that with a power supply 10 connected is. In addition, it is possible that the illuminants 100 each carry an autonomous power supply such as a battery.

the 31 shows, in a schematic sectional illustration, an exemplary embodiment of a luminous means described here. The light source 100 is for example a flexible light source 100 like it in connection with the 25th , 26th and 27 is described in more detail.

On the first main surface 101 of the substrate 1 remote second main surface 102 of the substrate 1 is an adhesive layer 30th upset. The adhesive layer is a protective film 31 covered. The protective film is from the adhesive layer 30th peelable, so that by peeling off the protective film 31 the adhesive layer 30th can be exposed. This is a light source 100 realized that after simply peeling off the protective film 31 can be attached by gluing in the sense of a transfer picture at a predetermined location.

the 32 shows a piece of furniture in a schematic perspective view 33 , for example a table or a shelf that has a self-adhesive light source 100 according to the 31 is pasted.

Due to the flexibility of the light source 100 can the illuminant 100 also around edges, curves or edges of the piece of furniture 33 to be glued. By gluing the piece of furniture 33 with the flexible, self-adhesive light source 100 is a piece of furniture realized as a lighting device 1000 acts.

In the schematic perspective view of 33 is a flexible light source, as it is, for example, in the 31 is shown in the rolled up state. That is called the light source 100 is so flexible that it can roll up into a roll and off a roll 32 in the direction of the arrow 32 lets unroll. In addition to particularly space-saving storage of the illuminant, this enables 100 a particularly simple use of the light source 100 For example, for gluing pieces of furniture, landings, walls, tiles, tiles or sanitary facilities.

the 34A shows an embodiment of a lighting device described here 1000 in a schematic plan view.

the 34B shows the lighting device 1000 in a schematic sectional view along the section line AA '.

At the lighting device 1000 according to the 34A and 34B it is a flexible lighting device. The flexibility of the lighting device 1000 is achieved by the fact that rigid illuminants 100 , that is, bulbs 100 which have no flexibility per se, since they are, for example, a rigid substrate 1 and / or a rigid encapsulation 6th have, in a flexible matrix 40 are embedded.

The lighting device 1000 includes two flexible straps 42 , 43 , between which the rigid bulbs 100 and the material of the matrix 40 are arranged. At least the carrier 43 through which the bulbs 100 the light generated during operation emit is translucent. The other carrier 42 can be formed from an opaque, for example reflective material, such as a metal foil.

The space between the two beams 42 , 43 is with the rigid bulbs 100 and a flexible matrix material 40 filled. The translucent matrix material can contain particles of at least one of the following materials: luminescence conversion material, color filter material, diffuser material.

Zeonex, polystyrene, polycarbonate or other plastics, which can preferably be processed by injection molding, are suitable as matrix material.

With the flexible carrier 42 , 43 it is, for example, a Plexiglas plate, a plastic film or a plastic-glass-plastic laminate.

The rigid bulbs 100 can be arranged so close to one another that - possibly due to diffuser particles contained in the matrix material - a homogeneous light impression of the lighting device 1000 results. That means individual light sources 100 are then no longer perceptible by the viewer, but the lighting device 1000 has a single, homogeneous luminous surface.

Alternatively, it is possible that the illuminants 100 are arranged so far apart that webs between the lighting means can be perceived. The space between individual lighting means can be filled with a matrix material that has light-absorbing particles. The light-absorbing particles can be, for example, soot or particles of dyes.

The conductor tracks 41 showing the individual light sources 100 the lighting device 1000 connect with each other, are arranged in the matrix material. This ensures the flexibility of the lighting device. The conductor tracks 41 are formed by thin, metallic springs or meandering, thin wires.

The porters 42 , 43 the lighting device 1000 can be chosen so that the lighting device 1000 Withstands loads of up to a few hundred kilograms undamaged. This is one way of using the lighting device 1000 possible as floor covering.

In a further exemplary embodiment of the lighting device 1000 how to use them in conjunction with the 34A and 34B is described is at least one of the two carriers of the lighting device 1000 rigidly executed. The rigid carrier can, for example, have a predeterminable curvature, so that a three-dimensionally shaped lighting device is formed 1000 results, which is invariable in its form, that is, rigid.

For the bulbs 100 the lighting device 1000 like them in conjunction with the 34A and 34B are described, all lamps described here can 100 Find use. In this way, colored, translucent, reflective or multicolored, flexible lighting devices can be produced in a particularly simple and cost-effective manner.

the 35A shows a schematic plan view of a lighting means 100 according to an embodiment of a lighting means described here 100 .

the 35B shows a schematic sectional view of the illuminant 100 the 35A along the section line AA '.

In the case of the light source that is used in conjunction with the 35A and 35B is described, it is a multi-colored light source.

As in the top view of the 35A Shown schematically, the luminous means comprises first and second color sub-areas which are arranged laterally next to one another. The first 50 and second 51 color sub-areas are suitable for emitting light of different colors. The first color sub-area 50 is capable of emitting light of a first color. The second color sub-area 51 is capable of emitting light of a second color. The first color differs from the second color.

I'm in connection with the 35A The first and second color subregions are described in the embodiment of the illuminant 50 , 51 arranged in a checkerboard pattern to one another. That is, the first and second color sub-areas 50 , 51 are arranged at the grid points of a square grid in such a way that each first color sub-area 50 that is not on the edge of the lamp 100 is arranged, four second color sub-areas 51 has as the closest neighbor that is lateral to the first color sub-area 50 adjoin. The same applies to the second color sub-areas 51 .

The color sub-areas 50 , 51 are formed in the manner of pixels of a display. The size of each color sub-area is preferably at least 1 mm ² .

As in the schematic sectional view of 35B is illustrated, the first and second color sub-areas 50 , 51 different luminescence conversion materials or different color filter materials, which are responsible for the different color impression of the first and second color sub-areas. So the first include color sub-areas 50 for example a first luminescence conversion material and / or a first color filter material 52 . The second color sub-areas 51 then comprise a second luminescence conversion material and / or a second color filter material 53 .

The luminescence conversion materials or the color filter materials can be arranged in a layer of the luminous means that is parallel to the first main surface 101 of the substrate 1 of the lamp 100 runs and which is arranged in such a way that at least a large part of the in the organic layer stack 4th Electromagnetic radiation generated during operation passes through this layer.

I'm in connection with the 35B described embodiment includes the lighting means 100 a substrate 1 , to which a first electrode is applied. On the side of the first electrode facing away from the substrate 2 is the organic layer stack 4th applied, which comprises at least one organic layer provided for generating light.

The organic layer stack 4th follows the first electrode on its 2 facing away from a second electrode 4th after.

On the organic layer stack 4th remote side of the second electrode 3 the layer is arranged, which is the first 52 and second 53 Comprises luminescence conversion materials and / or the first and second color filter materials. The light source 100 is through an encapsulation 6th hermetically sealed from the environment.

By structuring the first one accordingly 2 and / or second electrode 3 it is possible that the color sub-areas can be controlled independently of one another.

The structure of the light source 100 can in particular take place as in one of the other exemplary embodiments described. In this way, flexible, translucent and / or reflective lighting means that have at least two color sub-areas can be implemented in a particularly simple manner.

The materials described above are, for example, suitable as first and / or second luminescence conversion materials.

The materials described above are, for example, suitable as the first and second color filter materials.

For the sake of simplicity, im in conjunction with the 35A and 35B described embodiment, only two different color sub-areas are shown. However, it is possible that the illuminant 100 has a larger number of different color sub-areas which are suitable for generating light of different colors in pairs.

In the extreme case, the color of the light of each color sub-area differs from the color of the light of another color sub-area of the illuminant. This is shown schematically in the 35C shown, which is a further embodiment of a multicolored illuminant described here 100 explained on the basis of a schematic plan view. In this exemplary embodiment, the lighting means has five different color sub-areas 50a until 50e that each generate light in pairs of different colors.

the 36 shows a schematic sectional view through a lighting means 100 according to a further exemplary embodiment of a lighting means 100 , as it is for example in the schematic top view of the 35A is shown.

In the case of the light source that is used in conjunction with the 36 is described, it is a multi-colored light source.

In the embodiment of the illuminant 100 the 36 are the materials - that is, the first 52 and second 53 Luminescence conversion materials and / or the first and second color filter materials - in the encapsulation 6th of the lamp 100 arranged. For example, the encapsulation 6th of the lamp 100 be formed by a plate or flexible film in which the materials are embedded.

This is made possible by a light source 100 in which by the choice of encapsulation 6th the desired color impression of the light source 100 can be adjusted. The structure of the light source 100 can take place with regard to the other elements of the lighting means as in one of the exemplary embodiments discussed above or below. In this way, flexible, translucent and / or reflective lighting means that have at least two color sub-areas can be implemented in a particularly simple manner. The functional components of the light source, such as the first one 2 and second electrode 3 as well as the organic layer stack 4th , regardless of the encapsulation 6th are manufactured.

the 37 shows a schematic sectional illustration of a further exemplary embodiment of a multicolored luminous means described here 100 . In the present case, the active area of the substrate comprises sub-areas which each correspond to a color sub-area. In this embodiment the different color sub-areas are 50 , 51 of the lamp 100 realized by different emitter materials in the organic layer stack. That is to say, the organic layer stack is structured in the lateral direction. First and second color subregions differ at least with regard to an organic layer provided for generating light. The first color sub-area 50 has, for example, a first emitter material, the second color sub-area 51 then has a second emitter material that differs from the first emitter material. The structure of the light source 100 can then take place with regard to the other elements of the lighting means as in one of the other exemplary embodiments. In this way, flexible, translucent and / or reflective lighting means that have at least two color sub-areas can be implemented in a particularly simple manner.

the 38 shows the first and second electrodes in a schematic plan view 2 , 3 for a further embodiment of a multicolored illuminant 100 . Again 38 can be seen are the first and second electrodes 2 , 3 each formed in a strip shape. In this way, the individual color sub-areas 50 , 51 can be controlled independently of each other. The light source 100 is constructed in this case in the manner of a passive matrix display device. The control of the individual color sub-areas 50 , 51 takes place by means of a control device 11 that are outside the bulb 100 can be arranged or in the illuminant 100 is integrated. The light source 100 is via the control device 11 from the power supply 10 energized.

• • das Leuchtmittel kann ausgeschaltet sein, so dass keiner der Farb-Unterbereiche Licht erzeugt, also keiner der Farb-Unterbereiche leuchtet;
• • alle ersten Farb-Unterbereiche 50 des Leuchtmittels 100 leuchten, die zweiten Farb-Unterbereiche 51 leuchten nicht,
• • alle zweiten Farb-Unterbereiche 51 des Leuchtmittels 100 leuchten, die ersten Farb-Unterbereiche 50 leuchten nicht, und
• • die ersten und die zweiten Farb-Unterbereiche 50, 51 leuchten, so dass das Leuchtmittel 100 Licht der ersten und der zweiten Farbe emittiert.

the 39 shows a further embodiment of a multicolored luminous means described here 100 in a schematic plan view. In this exemplary embodiment, all of the first are color sub-areas 50 and every second color sub-area 51 each by electrical connections 54 respectively 55 connected with each other. That means, for example, all of the first color sub-areas 50 can be controlled together and at the same time in this way. The same is true for all other color sub-areas 51 can be controlled together and at the same time. The first and second color sub-areas 50 , 51 are, however, controllable separately from one another. A lamp designed in this way 100 thus has four operating states:

• • the lamp can be switched off so that none of the color sub-areas generates light, that is, none of the color sub-areas shines;
• • all first color sub-areas 50 of the lamp 100 light up, the second color sub-areas 51 do not shine,
• • all second color sub-areas 51 of the lamp 100 light up, the first color sub-areas 50 do not light up, and
• • the first and second color sub-areas 50 , 51 shine so that the bulb 100 Emits light of the first and second colors.

the 40A shows in a schematic plan view an embodiment of a lighting device described here 1000 . The lighting device 1000 comprises a plurality of multicolored illuminants 100 , for example in connection with the 35A , 35B , 35C , 36 , 37 or 39 are described.

• • Der erste Farb-Unterbereich 50a ist beispielsweise geeignet, im Betrieb der Beleuchtungseinrichtung 1000 Licht grüner Farbe zu emittieren.
• • Der zweite Farb-Unterbereich 50b ist geeignet, im Betrieb der Beleuchtungseinrichtung 1000 Licht roter Farbe zu emittieren.
• • Der dritte Farb-Unterbereich 50c ist geeignet, im Betrieb der Beleuchtungseinrichtung 1000 Licht blauer Farbe zu emittieren.
• • Der vierte Farb-Unterbereich 50d ist geeignet, im Betrieb der Beleuchtungseinrichtung 1000 weißes Licht zu emittieren.

Like the enlarged section of the 40B can be seen, includes each Light source of the lighting device 1000 four color sub-areas 50a , 50b , 50c and 50d :

• • The first color sub-area 50a is suitable, for example, in the operation of the lighting device 1000 To emit light of green color.
• • The second color sub-area 50b is suitable in the operation of the lighting device 1000 To emit light of red color.
• • The third color sub-area 50c is suitable in the operation of the lighting device 1000 To emit light blue color.
• • The fourth color sub-area 50d is suitable in the operation of the lighting device 1000 to emit white light.

The color sub-areas of each light source 100 the lighting device 1000 can be controlled separately and independently of one another. To this end, the lighting device comprises 1000 a control device 11 which can contain a microcontroller, for example. The control device 11 is by means of the power supply 10 energized.

The illuminants are optional 100 the lighting device 1000 on their light emitting front 100a an optical element 60 subordinate. In the case of the optical element 60 it is preferably a diffuser plate. That is, light, which is the optical element 60 is penetrated by the optical element 60 scattered. In this way, the individual color sub-areas are in operation of the lighting device 1000 The viewer can no longer perceive them as separate elements, but rather the lighting device 1000 appears as if it had a single, homogeneous luminous surface. The luminous surface of the lighting device 1000 is composed of the light-emitting front sides of the lighting means of the lighting device.

The optical element 60 is also preferred for mixing the color sub-areas 50a , 50b , 50c , 50d of the individual lamps 100 generated light suitable. In this way the lighting device is 1000 suitable for generating mixed light from two or more of these colors in addition to light of the colors of the individual sub-areas. Overall, a lighting device that can be used particularly flexibly is implemented in this way, which is suitable in a simple manner for generating light in a multitude of different colors.

Assign the bulbs 100 the lighting device 1000 additionally at least one color sub-area 50d which is suitable for generating white light, then by energizing this color sub-area, the brightness of the lighting device can also be increased 1000 emitted light can be adjusted particularly easily.

the 41 shows a schematic plan view of a further exemplary embodiment of a lighting means described here 100 . The light source 100 has at least two color sub-areas 51 and 50 on. The color sub-areas can, for example, correspond to the color sub-areas in connection with the 35A , 35B , 35C , 36 , 37 , 38 , 39 , 40A , 40B be arranged multicolored illuminants described.

When used in conjunction with the 41 described illuminant 100 are the first and second color sub-areas 50 , 51 connected antiparallel to each other. That means if the light source 100 is energized in a first direction, are for example the first color sub-areas 50 switched in the forward direction so that they generate light of the first color. The second color sub-areas 51 are then switched in the reverse direction so that no light is generated in the second color sub-areas.

By simply reversing the direction of the current, the second color sub-areas can be used in a next time step 51 are energized in the forward direction, so that light of the second color is generated. The first color sub-areas 50 are then switched in the reverse direction, so that in the first color sub-areas 50 no light generation takes place.

The color sub-areas 50 can be integrated on a common substrate. In addition, it is also possible for the color sub-areas to be individual, small illuminants which are connected in antiparallel to one another.

The control of such a light source 100 preferably takes place by means of a control device 11 , into which a pulse width modulation circuit 12th is integrated. The pulse width modulation circuit 12th is suitable for generating current that has a first current direction for first periods of time. The pulse width modulation circuit is used for second time periods 12th suitable for generating current which has a second current direction opposite to the first current direction.

The control device 11 of the lamp 100 can either be in the lamp 100 be integrated or it is arranged outside of the illuminant. The light source 100 is via the control device 11 from a power supply 10 energized.

the 42 shows a light source in a schematic sectional view 100 according to a further exemplary embodiment of a lighting means described here 100 .

The substrate of the light source 100 includes an active area 5 . The active area comprises at least one first electrode 2 , an organic layer stack 4th and a second electrode 3 .

A photodetector is located on the substrate at a distance from the organic layer stack 65 arranged.

The photo detector 65 can, for example, together with the organic layer stack and the electrodes on the active area 5 be made. The photo detector 65 comprises at least one first electrode 2 , a second electrode 3 and a photo-detecting layer sequence 66 , which is arranged between the two electrodes. The photo-detecting layer sequence 66 comprises an organic material. The photo-detecting layer sequence 66 thus comprises at least one layer that contains an organic material.

It is particularly possible that the photodetector 65 is constructed in the same way as the organic layer stack between the two electrodes of the illuminant 100 .

The photo detector 65 is provided, the brightness and / or the color location of the active area 5 to detect generated light. The photo detector 65 can do this with a control device 11 be connected, which includes a corresponding evaluation circuit. The control device 11 is preferably also on the first main surface 101 of the substrate 1 of the lamp 100 arranged. Alternatively, it is possible that the control device 11 outside of the lamp 100 is arranged.

As in the schematic sectional view of 42 shown, the photo detector can 65 and the organic layer stack from a common encapsulation 6th be encapsulated. The encapsulation is one of the illuminants described above in connection with the above 100 listed encapsulations. That is called the encapsulation 6th is formed for example by a glass, a plastic film, a plastic-glass-plastic laminate, a metal foil, a metal sheet, a cap or a thin-film encapsulation. The encapsulation 6th and / or the substrate 1 of the lamp 100 are translucent.

In connection with the 43 a further exemplary embodiment of a luminous means described here is explained on the basis of a schematic sectional illustration.

In this embodiment is a control device 11 together with the organic layer stack of the illuminant 100 on the first main area 101 of the substrate 1 arranged. The control device 11 can for example contain an organic material. The control device can then advantageously use the same production methods as the active area 5 are manufactured. This enables the lighting means to be produced in a particularly cost-effective manner 100 . The control device 11 is - either via additional electrical cables 9 such as bond wires 902 or by means of the first and second electrodes 2 , 3 with the organic layer stack of the illuminant 100 electrically connected. The control device 11 is suitable to the active area 5 of the lamp 100 to be energized in a predeterminable manner.

In particular, it is also possible that the control device 11 from outside - for example by a user of the light source 100 - is adjustable. This means that a user can set a specific operating state of the light source 100 via the control device 11 to adjust. As the 43 further shows are the control device 11 and the organic layer stack of the illuminant 100 from a common encapsulation 6th encapsulated. When encapsulating 6th it is one of the illuminants described above in connection with the above 100 listed encapsulations 6th . That is called the encapsulation 6th is formed for example by a glass, a plastic film, a plastic-glass-plastic laminate, a metal foil, a metal sheet, a cap or a thin-film encapsulation. The encapsulation 6th and / or the substrate 1 of the lamp 100 are translucent.

the 44 shows a further embodiment of a lamp described here 100 in a schematic plan view. In this embodiment of the illuminant are both a photodetector 65 how he in conjunction with the 42 is explained, as well as a control device 11 how to use them in conjunction with the 43 is described in more detail, together on the first main surface 101 of the substrate 1 of the lamp 100 arranged. This enables a particularly compact and autonomous light source 100 . The photodetector is preferably with the control device 11 connected, which is appropriate depending on by the photodetector 65 determined measured values the organic layer stack of the light source 100 to energize. The measured values can be, for example, the brightness and / or the color location of the organic layer stack 4th of the lamp 100 generated light act. It is also possible that the photodetector 65 is additionally or alternatively provided for the detection of the ambient light. An energization of the In this case, the organic layer stack is also dependent on the ambient brightness.

I'm in connection with the 44 described embodiment of the lamp 100 it is possible in particular that the organic layer stack, the photodetector 65 as well as the control device 11 each contain at least one organic material. These elements of the illuminant 100 can be manufactured using the same manufacturing methods. This enables a particularly simple and inexpensive production of the lighting means 100 .

In connection with the schematic sectional view of 45 is a further embodiment of a lamp described here 100 explained.

According to the in connection with the 45 The embodiment described comprises the organic layer stack 4th - in contrast to some of the exemplary embodiments of the luminous means described above - several layers provided for generating light 403 , 404 , 405 .

Each of these layers provided for generating light forms a color sub-area of the illuminant 100 . That is to say, the color sub-areas of the illuminant are arranged vertically one above the other in this exemplary embodiment. The different layers provided for generating light preferably differ with regard to their emitter material. The layers are therefore suitable for generating light of different colors from one another when the illuminant is in operation. For example, the first layer is provided for generating light 403 suitable to produce red light. The second layer 404 is then suitable for generating green light. The fourth layer intended to generate light 405 is suitable for generating blue light.

• - blau: DPVBi = 4,4'-Bis(2,2-diphenyl-ethen-1-yl)-diphenyl
• - blau: SEB-020
• - grün: Irppy = fac-tris(2-phenly-pyridyl)irirdium complex
• - rot: TER-012
• - rot: DCM2: 4-(Dicyanomethylene)-2-methyl-6-(julolidine-4-yl-vinyl)-4H-pyran

The following emitter materials, for example, are suitable for generating light of the specified color:

• - blue: DPVBi = 4,4'-bis (2,2-diphenyl-ethen-1-yl) -diphenyl
• - blue: SEB-020
• - green: Irppy = fac-tris (2-phenly-pyridyl) irirdium complex
• - red: TER-012
• - red: DCM2: 4- (dicyanomethylene) -2-methyl-6- (julolidine-4-yl-vinyl) -4H-pyran

The other elements of the light source 100 such as the substrate 1 , the first electrode 2 , the second electrode 3 and the encapsulation 6th are according to one of the other exemplary embodiments of lighting means 100 executed.

the 46 shows this in connection with the 45 Illuminants shown 100 in a schematic perspective sketch. The light source is with a control device 11 connected that is appropriate to the color of the light source 100 generated light. The control device 100 preferably comprises a pulse width modulation circuit for this purpose 12th . Depending on the electrical field strength that occurs when the light source is energized 100 between the first electrode 2 and the second electrode 3 in the stack of layers 4th adjusts, the recombination of the charge carriers in the organic layer stack 4th can be controlled in such a way that the recombination takes place predominantly in a specific, predeterminable layer provided for generating light. That is to say in this way it can be set, for example, that the recombination takes place mainly in the layer provided for generating light 404 takes place. In this way, the light source is predominantly green 100 generated.

The field strength in the organic layer stack 4th is by the pulse width modulation circuit 12th the control device 11 adjustable. The electric field strength can be regulated, for example, by the pulse duration and the pulse height of the pulse-width-modulated signal.

As the 47 illustrated schematically, the color in the CIE standard color table is that of the illuminant 100 generated light depending on whether the pulse width modulation circuit 12th a pulse-width modulated signal with a short pulse duration 1220 generated or the illuminant 100 by means of a continuous stream 1210 is energized.

The pulse height of the pulse-width-modulated signal essentially determines the brightness of the light source 100 generated light. In summary, that means the color and brightness of the light source 100 generated light can by means of the pulse width modulation circuit 12th can be set.

The control device 11 can also be equipped with a photo detector 65 be connected. The photo detector 65 is for example how in connection with the 42 and 43 described, suitable, the color location and / or the brightness of the illuminant 100 to detect generated light. The setting of a specific color location of the lamp 100 The light generated is then controlled by the photodetector as a function of the regulation 65 determined values possible. That is, the control device 11 includes a control circuit that determines a specific color point of the light source 100 generated light can adjust. The desired color location can preferably be specified by a user from outside the luminous means.

In connection with the 48A is one possible use of a multi-colored light source 100 , as it is described in connection with one of the previous exemplary embodiments, explained with reference to a schematic plan view.

In this exemplary embodiment, the light source is 100 on a piece of textile clothing 27 upset. The light source 100 is for example with a Velcro fastener 34 that is on the second major surface 102 of the substrate of the illuminant is arranged on the item of clothing 27 attached, see also the 49 .

As the 48B illustrated in a schematic representation is the lighting means 100 with a control device 11 , which may include a pulse width modulation circuit, for example. The wearer of the garment 27 can be the brightness and color of the illuminant 100 generated light via the control device 11 to adjust. It is also possible that the control device 11 is provided, depending on the sensor 67 determined measured values brightness and / or color of the light source 100 generated light.

At the sensor 67 it can be, for example, a sensor which is suitable for measuring body temperature, pulse frequency and / or skin resistance of the wearer of the item of clothing 27 to investigate.

An increased body temperature can, for example, be caused by the generation of red light by the illuminant 100 be signaled. A low temperature can be achieved by the generation of blue light by the lamp 100 be signaled.

Overall, the garment forms 27 together with the lamp 100 a lighting device in which the item of clothing 27 is provided as a carrier. The power supply 10 of the lamp 100 can for example be done by a battery that is in the garment 27 or the light source 100 is integrated.

The light source 100 is used, for example, as a flirt indicator. The wearer of the garment 27 with the lamp 100 can be about setting the color of the bulb 100 generated light then signal his willingness to flirt.

Such an item of clothing can also be used 27 with lamp 100 conceivable in medical or military applications. The light source 100 enables certain body functions such as body temperature, skin resistance and pulse rate of the wearer of the garment to be easily monitored 27 .

the 49 shows, in a schematic sectional illustration, an exemplary embodiment of a luminous means described here. The light source 100 is, for example, a flexible and / or multicolored light source 100 as described in connection with the exemplary embodiment explained above.

On the first major surface of the substrate 1 remote second main surface 102 of the substrate 1 is a Velcro fastener 34 upset. The Velcro fastener 34 is for example that of the first major surface of the substrate 1 remote second main surface 102 of the substrate 1 glued on. With the Velcro fastener 34 is the light source 100 with a textile material, for example an item of clothing 27 or a curtain 25th mechanically connected.

In connection with the 50 is a further possible use of a multicolored illuminant, as it is described, for example, in connection with one of the above figures, explained on the basis of a schematic perspective sketch. The light source 100 is on a piece of furniture 33 , for example on a table top, attached. The attachment of the light source 100 can, for example, as in connection with the 32 explained with an adhesive layer. Depending on the user's preference, the color of the light source can be changed 100 emitted light can be adjusted. Such a piece of furniture 33 can also be used for product presentations in addition to household use.

the 51 shows in a schematic perspective sketch the use of multicolored illuminants 100 as room lighting, for example as ceiling or wall lights.

In this way, depending on the user's wishes, the room can be illuminated with light of a specific color and / or a specific color temperature. It is particularly possible that the multicolored illuminant is 100 a flexible, translucent and / or reflective light source 100 acts.

the 52 shows a schematic perspective illustration of an embodiment of a luminous means described here 100 .

Substrate 1 , Electrodes 2 , 3 , organic layer stack 4th and encapsulation 6th of Illuminant 100 are designed according to another lamp described here.

In the embodiment of 52 are on the second major surface 102 of the substrate 1 of the lamp 100 electrical connection points 70 educated. I'm in connection with the 52 described embodiment are the connection points 70 designed as connection points protruding from the substrate. The connection points 70 are for example by means of the electrical leads described above with the first electrode 2 and the second electrode 3 of the substrate and are used to make electrical contact with the illuminant 100 from outside the lamp 100 .

In addition, the connection points are used 70 des in connection with the 52 described illuminant 100 for mechanical fastening of the light source 100 on another lamp 100 or on a carrier.

the 53 shows a first possibility for the formation of the connection points 70 im in connection with the 52 described embodiment of the lamp 100 . The connection points 70 of the lamp 100 are in this case as connector pins 71 executed. The connection pins are designed, for example, like cylinders. The connection pins are used for contacting and fastening the light source 100 pressed into the corresponding connection holes. In addition to the electrical contacting, the lighting means is preferably also mechanically fastened 100 held by an interference fit.

In connection with the 54 is a further possibility of designing the connection points in a schematic perspective sketch 70 of the lamp 100 the 52 shown. In this case the connection points are 70 as a connector 72 executed. The connector of the 54 is designed like a jack plug. The connector 72 has a first electrically conductive area 76a on, for example with the first electrode 2 of the lamp 100 is electrically connected. The connector also has 72 a second electrically conductive area 76b on, the one with the second electrode 3 of the lamp 100 is electrically connected. Electrically insulating areas 77 separate the two electrically conductive areas 76a , 76b from each other.

In connection with the 55 is a schematic plan view of a further configuration option for the connection points 70 of the lamp 100 as shown in Figure F52. In this case the junction is 70 as a connector 72 formed, the electrically conductive areas 76a , 76b are arranged laterally side by side. The leading areas 76a , 76b are designed like a cylinder.

Using the schematic perspective sketch of the 56 is an embodiment of a lamp described here 100 explained in more detail.

In contrast to the embodiment of the 52 are the connection points in this exemplary embodiment 70 on the side surfaces 105 of the substrate 1 of the lamp 100 arranged. The connection points 70 can be used in connection with the 53 , 54 and 55 explained be trained. This means that the connection points are designed as connection pins or connection plugs.

The one in the 56 Arrangement of the connection points shown 70 on the side surfaces 105 of the illuminant enables the connection and electrical contacting of several identically designed illuminants in a particularly simple manner 100 to a lighting device with an extensive luminous area. The luminous surface of the lighting device is composed of the light-emitting front sides of the lighting means of the lighting device.

In connection with the schematic perspective sketch of 57 is a further embodiment of a light source 100 described. In this exemplary embodiment, the connection points are 70 on the second major surface 102 of the substrate 1 of the lamp 100 educated. The connection points 70 are through recesses or openings in the substrate 1 educated.

the 58 shows a schematic plan view of a first possibility for designing the connection points 70 of the lamp 100 the 57 . In this case the junction is 70 as an electrically conductive recess 73 or contact hole executed. By pressing in a connection pin such as that in the 53 is shown, the illuminant 100 electrically contacted and mechanically fastened via the electrically conductive recess.

The schematic top view of the 59 shows a further exemplary embodiment for the connection points 70 des in connection with the 57 described illuminant 100 . In this case the connection points are 70 as connection sockets 74 executed. Any connection socket 74 has two electrically conductive areas 76a , 76b each with one electrode 2 , 3 of the lamp 100 are connected. For example, such a connection socket 74 by means of a connector 72 like him in 54 is shown to be electrically contacted.

the 60 shows a schematic plan view of a further embodiment of the connection points 70 of the lamp 100 the 57 . In this case the electrically conductive areas are 76a , 76b as electrically conductive - for example metallic - coatings of a connection socket, which are in the substrate 1 of the lamp 100 are arranged. The electrically conductive areas 76a and 76b are arranged laterally next to each other. For example, such a connection socket 74 by means of a connector 72 like him in 55 is shown to be electrically contacted.

The schematic perspective sketch of the 61 shows a further embodiment of a lamp described here 100 . In contrast to in connection with the 57 The lighting means described are the connection points as recesses in the side surfaces 105 of the substrate 1 of the lamp 100 executed. The specific design of the connection points 70 can in accordance with the in connection with the 58 , 59 and 60 described connection points 70 take place.

the 62A shows, in a schematic perspective sketch, a further exemplary embodiment of a luminous means described here 100 . In this exemplary embodiment, the electrical contacting and the mechanical fastening of the lighting means are implemented by elements that are separate from one another. The light source is mechanically fastened using mechanical connectors 78 . In the embodiment of 62A are the mechanical connectors on the second major surface 102 of the substrate 1 of the lamp 100 arranged. The mechanical connectors 78 are designed as clips that are used to attach the light source 100 engage in corresponding recesses.

the 62B shows a pin connection in a schematic perspective illustration 75 in an enlarged section.

The illuminant has for electrical contacting of the illuminant 100 a pin connector 75 on, which is also on the second main surface 102 of the substrate 1 is arranged. The pin connector 75 includes a plurality of pins 75a . At least one of the pins 75a contacts the first electrode 2 , at least a second pin 75b contacts the second electrode 3 . More pins 75c can, for example, be used to make contact with a light source 100 integrated control device 11 be provided.

In connection with the 63A is a schematic plan view of a further embodiment of a lighting means described here 100 explained. In this embodiment too, the mechanical connectors are 78 to the electrical connection points 70 of the lamp 100 arranged separately. Both the mechanical connector 78 as well as the electrical connection points 70 are on the side surfaces 105 of the substrate 1 of the lamp 100 arranged. The enlargement of the 63B shows a junction 70 . The connection point has, for example, an electrically conductive recess 73 - for example a contact hole - as well as a connection pin 71 on how to use them in conjunction with the 58 respectively 53 are explained in more detail.

the 64 shows a schematic plan view of an exemplary embodiment of a lighting device described here 1000 . The lighting device 1000 comprises at least two illuminants 100 . The bulbs 100 point on the side surfaces 105 of the substrate 1 arranged connection points, which alternate as electrically conductive recesses 73 and contact pins 71 are trained. The contact pins 71 of a first illuminant engage in corresponding electrically conductive recesses 73 a second light source. By connecting contact pins 71 and electrically conductive recesses 73 becomes both an electrical and a mechanical connection between the light sources 100 the lighting device 1000 manufactured.

The mechanical connection between two light sources 100 is mediated, for example, by an interference fit. This is the diameter of each contact pin 71 equal to or greater than or equal to the diameter of each electrically conductive recess 73 chosen. By pressing in the contact pin 71 into the corresponding electrically conductive recess 73 a mechanical connection is conveyed that can only be released again by applying great mechanical force.

Alternatively, the connection points can be used as contact plugs - as they are in connection with the 54 and 55 are described - or as corresponding connection sockets - as they are in connection with the 59 and 60 - Are described, be formed. This enables an electrical and mechanical connection of the lighting means 100 . This is the mechanical connection between the light sources 100 releasable by applying a relatively small mechanical force. This allows a defective lamp to be exchanged in a particularly simple manner 100 from the lighting device 1000 .

In connection with the 66 and 65 is a further exemplary embodiment of the lighting device on the basis of schematic perspective sketches 1000 described. The bulbs 100 are in this embodiment on a carrier that acts as a carrier grid 81 is formed, applied. The carrier grid 81 has connection points 82 on, which are formed, for example, as contact holes, as they are in connection with the 58 are described in more detail. Alternatively, the contact points 82 be designed as connection sockets, as they are in conjunction with the 59 and 60 are explained in more detail.

Contact pins 71 or contact plug 72 how to use them in conjunction with the 53 , 54 and 55 are described, form the connection points 70 the illuminant 100 . The connection points 70 access corresponding connection points 82 of the carrier grid 81 . On the carrier grid 81 are preferably a large number of illuminants 100 electrically contacted and mechanically fastened. The lighting device 1000 is through a power supply 10 with that for the operation of the lamps 100 necessary operating current is supplied.

In connection with the 69 and 65 is a further embodiment of a lighting device described here 1000 explained. In this exemplary embodiment, the lighting device 1000 a carrier plate 80 on showing a variety of connection points 82 includes. Corresponding connection points 70 of the lamp 100 reach into the connection points 82 the carrier plate 80 . In the event that the connection points 70 of the light source as connecting pins 71 or connector 72 are the connection points 82 the carrier plate as electrically conductive recesses 73 or connection sockets 74 executed. In the event that the connection points 70 the illuminant 100 as electrically conductive recesses 73 or connection sockets 74 are the connection points 82 the carrier plate 80 as connector pins 71 or connector 72 executed.

The lighting device 1000 how to use them in conjunction with the 67 and 65 is from a power supply 10 energized.

In connection with the 68 is a schematic perspective illustration of a further embodiment of a lighting device described here 1000 explained. The lighting device 1000 has a carrier which is designed in the form of a cable or rod system. The cable or rod system comprises at least two cables or rods that run essentially parallel to one another 83 made of an electrically conductive material. Via the ropes or poles 83 become the bulbs 100 the lighting device 1000 energized.

For mechanical fastening and electrical contacting on the ropes or rods 83 indicates the illuminant 100 two connection points that act as connecting rails 84 are carried out on opposite side surfaces 105 of the substrate 1 of the lamp 100 are arranged.

The connecting rails 84 are designed in the manner of cut cylinders. The connecting rails 84 extend over the entire length of the side surface 105 of the substrate 1 to which they are attached.

The connecting rails 84 grab the ropes or bars 83 the wearer of the lighting device 1000 preferably so loosely that the lighting means 100 the lighting device 1000 by applying a relatively small mechanical force along the ropes or rods 83 can be moved. In this way, the lighting means can be positioned in a particularly simple manner 100 along the ropes or poles 83 possible. The bulbs 100 can even operate the lighting device 1000 along the ropes or poles 83 be moved. Overall, this allows a lighting device that can be used particularly flexibly 1000 .

In connection with the 69 is based on a schematic circuit diagram an embodiment for the connection of lighting means 100 a lighting device described here 1000 explained. In this exemplary embodiment, the lighting means are 100 connected in parallel to each other. The bulbs 100 are for example from a voltage source 10 supplied with operating voltage. It is possible that the illuminants 100 an integrated control device each 11 include.

In connection with the 70 is a further exemplary embodiment of a lighting device described here on the basis of a schematic circuit diagram 1000 explained. In this case the bulbs are 100 the lighting device 1000 connected in series to each other. The bulbs 100 are doing so from a power source 10 supplied with the necessary operating current. It is possible that the power source 10 for self-recognition of the number of lamps 100 the lighting device 1000 suitable is. The bulbs 100 can also have an integrated control device 11 as described above.

The detection of the light sources 100 can be done, for example, by measuring the current strength or the voltage. This can be done in operation also the possible failure of one or more lamps 100 can be detected.

In connection with the 71 is a further embodiment of a lighting device described here 1000 explained. The bulbs 100 are doing this with a control device 11 as described above. Another control device 11a the lighting device 1000 supplies the lamps 100 with the necessary operating current and control signals for the control devices 11 the illuminant 100 .

In connection with the 72 is a further exemplary embodiment of a lighting device described here on the basis of a schematic perspective illustration 1000 explained. The lighting device 1000 has a variety of light sources 100 which are either connected directly to one another by means of the connection and connection techniques described above or which are applied to a carrier in the manner described above and are electrically connected to them.

The light sources 100 is an optical element on its light-emitting front 60 downstream, which is formed for example by a diffuser plate. The optical element can be formed, for example, by a light-permeable plate - for example a glass plate - into which light-scattering particles are introduced. Alternatively, it is possible for the surface of the radiation-permeable plate to be roughened, so that due to the refraction of light when it passes through the plate, a diffuse scattering of the light passing through takes place. The light from the illuminant is transmitted through the diffuser plate 100 scattered in such a way that the individual lamps can no longer be perceived separately by the viewer. In this way is a large area lighting device 1000 realized with a particularly large, homogeneous light surface. The luminous surface of the lighting device is composed of the light-emitting front sides of the lighting means of the lighting device.

In connection with the 73 is a further embodiment of a lighting device 1000 shown on the basis of a schematic perspective sketch. The lighting device 1000 can be used, for example, as a ceiling light. The lighting device 1000 includes several light sources 100 either as described above through connection points on the side surfaces 105 of the substrates 1 the illuminant 100 are electrically and mechanically connected to one another or by means of rods or ropes 83 are attached and electrically contacted.

In connection with the schematic perspective illustration of 74 is a further embodiment of a lighting device 1000 described. The lighting device 1000 includes a base in which the power supply 10 and a control device 11 are integrated. The bulbs 100 the lighting device 1000 are by means of rods 83 mechanically attached and electrically contacted. As a light source 100 In turn, the lighting means described in connection with the above exemplary embodiments can be used.

The in connection with the 74 described lighting device 1000 is particularly suitable as a standing or table lamp.

In connection with the 75 is a display device 1010 explained in more detail using a schematic perspective illustration. The display device 1010 comprises a lighting device 1000 as backlighting for an imaging element 90 . In the case of the imaging element 90 it is, for example, an LCD panel. The LCD panel is made up of the lighting device 1000 directly backlit. That is, the imaging element 90 is the lighting device 1000 downstream in such a way that a large part of the from the lighting device 1000 light generated during operation on the imaging element 90 hits and this backlit.

The lighting device 1000 which is used here as a backlighting device is designed, for example, in accordance with one of the other exemplary embodiments described here. The lighting device comprises at least two lighting means 100 as described here.

To homogenize the light provided for backlighting, it is also possible that between the imaging element 90 and the light-emitting front of the lighting means 100 the lighting device 1000 an optical element 60 is arranged, which is then preferably designed as a diffuser plate. The optical element can be formed, for example, by a light-permeable plate - for example a glass plate - into which light-scattering particles are introduced. Alternatively, it is possible for the surface of the radiation-permeable plate to be roughened, so that due to the refraction of light when it passes through the plate, a diffuse scattering of the light passing through takes place. The light from the illuminant is transmitted through the diffuser plate 100 the lighting device so scattered that the individual light sources are no longer separated on the imaging element 90 can be mapped. In this way is a large area lighting device 1000 with a particularly large, homogeneous Illuminated area for backlighting the imaging element 90 realized.

In connection with the 76 Figure 3 is an embodiment of a coarse grain display 95 explained in more detail using a schematic plan view. The coarse-grained display is a lighting device with a support plate 80 executed on which a plurality of illuminants 100 are upset.

The bulbs 100 are arranged, for example, in the manner of a seven-segment display. By energizing certain light sources 100 is a grainy display this way 95 realized, which is suitable for the representation of digits.

the 77 shows a bathroom with light sources 100 that are designed as tiles. The bulbs 100 are carried out, for example, according to one of the exemplary embodiments described above. You are with the second major face 102 of the substrate 1 glued to conventional sanitary tiles, for example. A power supply for these illuminants can be provided, for example, by means of induction. In this case, electrical conductor tracks can be used to connect the illuminants 100 be waived. These lamps are therefore particularly suitable for use in the sanitary area, since the risk of a short circuit due to moisture is reduced.

A lamp that is energized by induction is, for example, in the publication DE 102006025115 disclosed, the disclosure content of which with regard to the structure of such a luminous means is hereby incorporated by reference.

78 shows a schematic perspective illustration of a lighting device 1000 with a lamp 100 and a second light source 370 according to an example. As a second light source 370 In the present case, an incandescent lamp is used, which is in a holder of a carrier 371 is introduced. Instead of an incandescent lamp as a second light source 370 For example, a halogen lamp can also be used. The incandescent lamp is designed in such a way that, during operation, it emits white light with a color point in the warm white area of the CIE standard color table. The light source, on the other hand, is designed in such a way that it emits light from the cold white area of the CIE standard color table during operation. The light source 100 In the present case, it is designed to be flexible and permeable to visible light. The light source 100 is arranged as a cylindrical lampshade around the incandescent lamp in such a way that a large part of the light emitted by the second light source passes through the illuminant. In this way, mixed-colored light, the light of the illuminant, is emitted when the lighting device is in operation 100 and light from the second light source 370 having.

Furthermore, the light sources are 100 and the second light source 370 Executed dimmable, so that the proportion of the light from the incandescent lamp and the proportion of the light from the lamp 100 can be varied on the mixed-colored light. Depending on the proportion of light from the incandescent lamp and the light from the illuminant, the color location can be a controller 372 can be adjusted from cold white to warm white in the holder of the lighting device. In the case of the lighting device according to 78 it is therefore a color-changeable lighting device.

the 79 shows a schematic perspective illustration of a further example of a lighting device 1000 with a lamp 100 and a second light source 370 . The lighting device is intended to be attached to the wall. At the second light source 370 it is a lava lamp. The lava lamp comprises wax that is incorporated into a carrier liquid. When the lava lamp is in operation, wax and carrier liquid are heated from one side, usually from below, so that the carrier liquid circulates in the lamp due to convection. Furthermore, as a result of the heating, the wax forms decorative shapes within the carrier liquid. As a rule, the carrier liquid has a different color from the wax, so that the lava lamp emits mixed-colored light which comprises parts of the color of the wax and parts of the color of the carrier liquid.

In the present case, the lava lamp is essentially cylindrical and fastened to the wall. The light source 100 is designed to be flexible and arranged as a half cylinder jacket around the lava lamp in such a way that the light emitted by the lava lamp that does not radiate to the wall essentially passes through the illuminant. The light source 100 furthermore preferably emits light of a color that is not included in the light of the lava lamp. The lighting means can also be designed to be dimmable, for example, so that the color of the light emitted by the lighting device can be changed by dimming the lighting means. In this way, a color-variable lighting device is obtained which can produce particularly impressive color effects. It is also possible for the lava lamp to be dimmable.

the 80A shows a schematic perspective illustration of a lighting device according to a further exemplary embodiment. 80B shows a sectional view of the lighting device of FIG 80A .

In the case of the lighting device according to 80A and 80B it is also a color-changing lighting device 1000 . This includes several LEDs 380 that are on a carrier 381 are mounted as additional, second light sources 370 . The LEDs 380 emit light of a first color. Above the LEDs is a milky glass pane as an optical element 60 arranged through which the light of the LEDs passes during operation of the lighting device in such a way that the milky glass pane emits colored scattered light of the first color from its front side. The milky glass pane preferably scatters the light from the LEDs in such a way that an observer who is positioned in front of the glass pane perceives a uniform, luminous surface.

The milky glass plate continues to serve as a substrate 1 for one lamp 100 , which emits light of a further second color different from the first color and is designed to be transparent to visible light. The milky glass pane has an active area on which a first electrode is applied, which is permeable to visible light.

On the first electrode 2 is the organic layer stack 4th applied, which is also designed to be transparent to visible light. The organic layer stack 4th emits light of a second color that is different from the first color. On the organic layer stack 4th is a second electrode 3 applied, which is also permeable to visible light. First and second electrodes 2 , 3 that are permeable to visible light are, for example, based on the 2A described. On the second electrode 3 is a pane of glass as encapsulation 6th applied, for example by gluing. The pane of glass that acts as an encapsulation 6th Serves is in contrast to the glass panel, which serves as the substrate 1 serves, clearly formed.

A lighting device according to 80A and 80B can be used, for example, as floor lighting in bars or dance floors. Furthermore, such color-changing lighting devices designed as color-changing light tiles can also be used for medical purposes in light therapy.

81 shows a further embodiment of a lighting device 1000 , where next to a lamp 100 at least one other light source is used. Here is the light source 100 rigid and planar. Second light sources are located in the center of the front of the lamp 370 two cold cathode lamps arranged. Such an element can be used as a ceiling element, for example.

82 shows a further embodiment of a lighting device 1000 with a lamp and a second light source. The light source 100 is in the present case like the illuminant according to FIG 81 rigidly designed. In the center of the front of the lamp is an LED module 390 arranged, which comprises a carrier element on which four light emitting diodes 380 are arranged. Are advantageous in the lighting device 1000 Point light sources - namely the LED of the LED module 390 - with a flat light source - the illuminant 100 combined. The user of the lighting device 1000 In this way, you can choose between different operating states and combine them with one another.

the 83 shows a schematic perspective illustration of a lighting device 1000 with a lamp 100 and a second light source. The light source 100 In the present case, it is designed to be transparent to visible light and emits light of a first color. As a second light source 370 an organic light-emitting diode is used that emits light of a second color. The organic light-emitting diode has a radiation-emitting front side on which the lighting means is arranged. When the lighting device is in operation, the light from the organic light-emitting diode penetrates the illuminant 100 so that the lighting device 1000 emits mixed-colored light that includes light from the illuminant and light from the second light source. The light source 100 and the organic light-emitting diode are presently controlled by a common control device 11 controlled.

Claims (10)

Lighting device (1000) with - A first and a second illuminant (100), each comprising - A substrate (1) having a first main surface (101) on which a first electrode (2) is applied, - a second electrode (3), and - An organic layer stack (4) within an active area (5) of the substrate (1) between the first and the second electrode (2, 3), wherein the organic layer stack (4) comprises at least one organic layer (401) which is suitable is to produce light, and - a carrier, where - the illuminants (100) are electrically and mechanically connected to one another, - The lighting means (100) are mechanically and electrically connected to the carrier by means of a connection point (70), which is designed as a connection pin (71) or as a connection rail (84), and - The connection point (70) is arranged on the second main surface (102) of the substrate (1) facing away from the first main surface (101) of the substrate (1) of the lighting means (100). Lighting device (1000) according to the preceding claim, in which the carrier is designed as a carrier plate (80), carrier grid (81), cable system (83) or rod system (83). Lighting device (1000) according to at least one of the preceding claims, in which the first and second lighting means (100) emit light of different colors during operation. Lighting device (1000) according to at least one of the preceding claims, in which an optical element (60) that contains a diffuser material is arranged downstream of the lighting means (100) in an emission direction. Lighting device (1000) according to at least one of the preceding claims, comprising: - A multiplicity of lighting means (100), the lighting means (100) being arranged like a matrix, and - A control device (11) which is suitable for controlling each of the lighting means (100) independently of the other lighting means (100). Lighting device (1000) according to the preceding claim, in which at least one of the lighting means (100) is suitable for emitting light of a first color during a first period of time and for emitting light of a second color during a second period of time, the first color differing from the second color is different. Lighting device (1000) according to at least one of the preceding claims, in which the active area (5) of the lighting means (100) is arranged within an encapsulation (6). Lighting device (1000) according to the preceding claim, in which the encapsulation (6) is formed by a thin-film encapsulation (6). Lighting device (1000) according to the preceding claim, in which the thin-film encapsulation (6) comprises at least one thin-film layer which is applied by means of atomic layer deposition. Lighting device (1000) according to at least one of the Claims 8 - 9 , in which the thin-film encapsulation (6) comprises a protective lacquer layer (603) as the outermost layer.

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