WO2017211681A1 - Dispositif électroluminescent, procédé de production et procédé de fonctionnement - Google Patents

Dispositif électroluminescent, procédé de production et procédé de fonctionnement Download PDF

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Publication number
WO2017211681A1
WO2017211681A1 PCT/EP2017/063316 EP2017063316W WO2017211681A1 WO 2017211681 A1 WO2017211681 A1 WO 2017211681A1 EP 2017063316 W EP2017063316 W EP 2017063316W WO 2017211681 A1 WO2017211681 A1 WO 2017211681A1
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WIPO (PCT)
Prior art keywords
light
organic
emitting device
emitting
distance
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PCT/EP2017/063316
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German (de)
English (en)
Inventor
Arne FLEISSNER
Daniel Riedel
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Osram Oled Gmbh
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Publication of WO2017211681A1 publication Critical patent/WO2017211681A1/fr

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/90—Assemblies of multiple devices comprising at least one organic light-emitting element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F21Y2115/15—Organic light-emitting diodes [OLED]

Definitions

  • the invention relates to a light-emitting device, a method for producing a light-emitting device and a method for operating a light-emitting device.
  • a plurality of light sources 102 are arranged at a distance 104 from one another on a ceiling 108 or above a region 120 to be illuminated (see FIG. 1).
  • the light sources 102 are arranged at a distance 106 above a surface to be illuminated, for example a working surface of a table or a workbench.
  • Illustrated further in FIG. 1 is illuminance 110 as a function of position 112 below the light sources, FIG. 1 illustrating only a cross-sectional view.
  • FIG. 1 also illustrates the functional illuminance 114 of the light sources 102 as a function of the position 112 below the light sources 102 at the height of the area 120 to be illuminated.
  • the functional illuminance 114 results from the superimposition of the light intensity distribution curves 202 (FIG. 2) of the light sources 102.
  • FIG. 3 A plan view of the illuminance in the area to be illuminated 120 (Figure 320) is shown in Figure 3, wherein a distance 106 of 2.2 m and a surface (x * y of 5 m "10 m) for the arrangement 300 of the assumed to be illuminated area.
  • the light sources 102 in each case an area of 1 m ⁇ 1 m is assumed, wherein the light sources 102 are arranged at a distance 104 of 3 m from each other.
  • the illuminance ⁇ curve 114 in FIG. 1) is illustrated as intensity histogram 310 and intensity distribution 320, which is superimposed on the spatial-perspective representation of the light sources 102 to the area to be illuminated.
  • the minimum 118 of the illuminance 110 in the area 120 to be illuminated may not be smaller than the sufficient illuminance 116 (for example 500 lx, see intensity histogram 310 and top view 320 in FIG. 3).
  • the light source must not dazzle.
  • a light source fades in this case if the luminance of the light source is larger than 3000 cd / m 2 at a viewing angle of the light source of greater than 65 °.
  • the maximum brightness of the light source is limited, for example, to a luminance of a maximum of 3000 cd / m 2 at a viewing angle greater than 65 °.
  • OLEDs organic light-emitting diodes
  • Conventional OLED light sources are surface light sources and have a flat luminous surface.
  • Conventional OLED light sources are usually Lambert's emitters, ie OLEDs have a Lambertian emission characteristic Lambert's emission characteristic means that the luminous area of the OLED has the same luminance at all viewing angles as the circular shape of the OLED
  • Luminous intensity distribution curve 202 can be seen in the polar coordinate diagram 200 in FIG. This means that an OLED in general lighting use can not be operated at more than 3000 cd / m 2 to prevent glare.
  • the Lambert'sehe radiation characteristic also requires that the light flux drops with the cosine of the viewing angle. Outside the working surface just below the OLED, the illuminance decreases rapidly (see Fig.l).
  • the OLEDs 102 are installed at a relatively small distance 104 from one another on the ceiling 108.
  • many individual OLED light sources 102 are required. The distance may be dependent on the electrical installation in the room, for example
  • Cable ducts in office or residential buildings At a conventional ceiling height in the range of 2.2 m to 2.5 m, the required distance 104 may thus be too low to be able to use conventional OLED light sources for general lighting, since extensive remodeling and
  • the OLEDs 102 could also - like ordinary light sources - be provided with a glare-free structure, for example a plurality of louvre diaphragms or a microlens field. As a result, the luminous area would no longer be visible under viewing angles greater than 65 °. Under these circumstances, glare is ensured, and the OLED can be operated with more than 3000 cd / m 2, which allows an increase in the distance 104 between the individual OLED light sources 102nd A disadvantage of this anti-glare approach is, inter alia, the loss of efficiency associated with beam shaping.
  • the OLED light source 102 is no longer glare-free at all viewing angles by means of operation at over 3000 cd / m 2 .
  • the OLED light source 102 loses its optically high-quality impression by means of the anti-glare structure.
  • the OLED light source can lose an advantage over existing light sources.
  • the object of the invention is to provide a light-intersecting device with a plurality of light-emitting components, by means of which a sufficient illuminance can be achieved without glare.
  • the distance between the light-emitting component is to be increased, so that the number of light-emitting components is reduced in order to illuminate a predetermined range with a sufficient illuminance.
  • a light emitting device has a plurality of organic, light-emitting components, each having a holding structure and a light exit surface.
  • the light exit surface of at least one organic, light-emitting component has a
  • At least two organic, light-emitting components are arranged side by side at a first distance from each other.
  • the at least two organic, light-emitting components are arranged at a second distance over a predetermined range.
  • the first distance and the light exit surfaces of the at least two organic, light-emitting components are set up such that the illuminance in the predetermined range is greater than a predetermined illuminance.
  • the lateral radiation direction causes the number of organic, light-emitting components required to achieve the minimum necessary illuminance in a room everywhere to be reduced.
  • the complete glare-free nature of the organic, light-emitting components can be retained, for example for viewing angles of the organic, light-emitting components which are greater than 65 ° . This will be without the use of additional optics or Entblendungs Modellen allows. This leaves the optically high-quality impression of the organic, light-emitting components as compared to the known anti-dazzle approach.
  • the lateral emission direction can be realized for example by means of a convex bending of mechanically flexible, organic, light-emitting components and / or a two-dimensional or three-dimensional convex arrangement of rigid organic, light-emitting component.
  • the support structure may be understood as a reference point with respect to which the laterally outward radiation direction is related. Laterally outward can be understood as a laterally outer region of a convex shape or an outer, lateral surfaces or vectorial, lateral surface portion of a polygonal shape.
  • the support structure may be embodied in the form of a substrate, a carrier, a bottom plate or a socket.
  • the holding structure is integrated in / with the organic, light-emitting component, for example so that the organic, light-emitting component with the holding structure is an independent unit.
  • the support structure is, for example, substantially rigid or immobile, for example mechanically rigid.
  • the light exit surface with a lateral emission direction has a curvature. This causes a constant transition of different directions of radiation, wherein the light is emitted in each case after the component outside.
  • the organic, light-emitting device is free from optically inactive regions in the region of the curvature.
  • the curved light exit surface has a convex shape. This causes the illuminance between the organic light-emitting devices to be increased.
  • the light exit surface with lateral emission direction on a kink In a further development, the light exit surface with lateral emission direction on a kink.
  • This causes a step-like or discontinuous change in the emission direction of the organic, light-emitting component.
  • the light exit surface with lateral emission direction has at least a first light exit region and a second light exit region.
  • the first light exit area is arranged at a distance and / or an angle to the second light exit area.
  • the light exit areas may have a planar shape.
  • the light exit areas may have, for example, a lambertian radiation characteristic. The light exit areas can thus form a light exit surface, which form a non-planar shape with non-Lambertian radiation characteristic.
  • the first distance is greater than the second distance.
  • the second distance has a value in a range of 1.0 m to 5 m.
  • the first distance has a value in a range of 1.5 m to 5 m.
  • the predetermined illuminance has at least 500 lux.
  • the predetermined illuminance is a prescribed illuminance for the intended working space at a predetermined working height.
  • a legal standard can be met.
  • the two organic, light-emitting components are arranged as non-Lambert'sehe emitters.
  • the two organic, light-emitting components are set up as batwing emitters.
  • the light-emitting device further comprises a wall or ceiling.
  • the plurality of organic light emitting devices are held by means of the support structures.
  • the wall or the ceiling is arranged diffusely reflecting, for example white.
  • a method of manufacturing a light-emitting device comprises providing a plurality of organic, light-emitting components, each having a holding structure and a light exit surface.
  • the light exit surface of at least one organic, light-emitting component has a
  • the method comprises arranging at least two organic, light-emitting components next to one another at a first distance from each other.
  • the at least two organic, light-emitting components are arranged at a second distance over a predetermined range.
  • the first distance and the light exit surfaces of the at least two organic, light-emitting components are set up such that the illuminance in the predetermined range is greater than a predetermined illuminance.
  • a method of operating a light-emitting device is provided.
  • the Light emitting device is formed according to one of the developments described above.
  • the method includes supplying an electric power to the first organic light emitting device and the second organic light emitting device so that the luminance of the light emitted from the first organic light emitting device and the second organic light emitting device is less than or equal to 3,000 cd / m 2 .
  • FIG. 1 is a sectional view of a conventional one
  • Figure 2 is a luminous intensity distribution curve of a conventional Lambert' Spur light source in one
  • FIG. 3 is a perspective view of a conventional one
  • Figure 4 is a schematic representation of a light-emitting device according to various embodiments.
  • FIG. 5 is a schematic representation of an organic, light emitting device and their Luminous intensity distribution curve in polar coordinates diagrams according to various embodiments;
  • FIG. 6 shows a perspective view of a light-emitting device according to various embodiments with organic, light-emitting components according to FIG. 5 and the resulting illuminance in a predetermined range;
  • Figure 7 is a schematic representation of an organic, light-emitting device and its luminous intensity distribution curve in polar coordinate diagrams according to various
  • FIG. 8 shows a schematic illustration of an organic, light-emitting component and its light intensity distribution curve in polar coordinates.
  • FIG. 9 is a flow chart of a method of manufacturing a light-emitting device according to various embodiments.
  • FIG. 10 shows a flow chart of a method for operating a light-emitting device according to various exemplary embodiments.
  • a light emitting device may comprise one, two or more organic light emitting devices.
  • a light-emitting device may also have one, two or more electronic components.
  • An electronic component may have, for example, an active and / or a passive component.
  • An active electronic component may have, for example, a computing, control and / or regulating unit and / or a transistor.
  • a passive electronic component may, for example, comprise a capacitor, a resistor, a diode or a coil.
  • An organic light emitting device is an electromagnetic radiation emitting device.
  • a component emitting electromagnetic radiation can be a semiconductor component emitting electromagnetic radiation and / or can be a diode emitting organic electromagnetic radiation or a transistor emitting organic electromagnetic radiation.
  • the radiation may, for example, light in the visible range, UV light and / or Be infrared light.
  • the light emitting device may be part of an integrated circuit in various embodiments.
  • a plurality of light-emitting components may be provided, for example housed in a common housing.
  • a curvature may be a fold, a bend, a curvature, a bend, a wrinkle, an entanglement.
  • a convolution can also be understood as a convolution in the mathematical sense, ie as a non-planar arrangement of Lambertian light exit regions to a non-Lambertian light exit surface.
  • An emission characteristic of the Lambertian radiator can also be represented as a light intensity distribution curve, for example by a Lambertian beam intensity distribution.
  • the Lambert's radiant intensity distribution can be represented, for example, in a polar coordinate diagram extending, for example, in a polar angle range from 180 ° to -180 °, ie by 360 °, wherein a polar axis is from the pole (the origin) of the polar coordinate system out and defines the polar angle 0 °.
  • the beam intensity distribution can now be represented in the polar coordinate system such that a vertical straight line on the surface of the surface radiator corresponds to the polar axis.
  • Lambert's radiant intensity distribution now forms a circle in a half-space that extends clockwise from 90 ° to -90 °. The half-space is defined and / or delimited by the electromagnetic radiation emitting surface of the surface radiator.
  • the radiant intensity reaches its maximum at solid angle 0 ° and drops down to an edge of the surface radiator. This means that the entire electromagnetic radiation emitted by the Lambert 'emitter is emitted into the half space above the area radiator, wherein the beam strength along the surface normal on the surface radiator is maximum and drops towards the edge of the surface radiator.
  • FIG. 4 shows a schematic illustration of a light-emitting device according to various exemplary embodiments. Illustrated in a schematic cross-sectional view are two organic, light-emitting components 402 of a light-emitting device 400.
  • the two organic light-emitting components 402 are arranged next to one another on a ceiling 404 or a wall 404.
  • the two organic light emitting devices 402 are also spaced apart at a first distance 412.
  • An organic light emitting device 402 is illustrated in an enlarged view 430.
  • the light exit surface 432 and the support structure 406 of the organic light emitting device 402 are illustrated.
  • the light exit surface 432 is held by means of the support structure 406 on the ceiling 404 and the wall 404, for example.
  • the light exit surface 432 has a radiation direction (illustrated by means of the arrow 408), which in the
  • the light exit surface 432 has a radiation direction (illustrated by the arrow 410) which is arranged laterally to the support structure 406, as will be described in more detail below.
  • the organic, light-emitting components 402 are arranged at a second distance 414 over a predetermined area 424.
  • the second distance 414 is for the two organic light emitting devices 402 are approximately equal to or the same.
  • illuminance 416 of light emitting device 400 as a function of position 418 beneath organic light emitting devices 402 (illustrated as a curve), as described in greater detail below.
  • the device 400 has a predetermined illuminance 420 (illustrated by the arrow 422).
  • the predetermined illuminance 420 is, for example, a minimum illuminance of the light-emitting device 400.
  • the light exit surface 432 also referred to as luminous surfaces, of at least one organic, light-emitting component has a lambertian radiation characteristic.
  • the light exit surface 432 has a non-planar shape.
  • the non-planar shape is, for example, the shape of a convex body.
  • the non-planar shape causes a lateral emission of light. Due to the non-planar shape, the luminous flux emitted by the organic, light-emitting components 402 thus no longer follows the cosine of the viewing angle, as in the case of a planned Lambert's radiator, see light intensity distribution curve in FIG.
  • the non-plan shaped organic light emitting device 402 when operated at the same luminance of a planar OLED 102 (FIG. 1), for example 3000 cd / m 2 , allows the same predetermined illuminance 420, for example at least 500 lx, in the same predetermined range at a significantly greater first distance 412 between the organic light emitting devices 402.
  • the light exit surface 432 of the nonplanar organic light emitting devices 402 may be implemented as such, ie in a flat, non-convex view, as Lambert's radiator. This remains the non-plan shaped light exit surfaces 432, for example, the convex light exit surface 432, obtained a constant for all viewing angles luminance. As a result, the non-plan shaped light exit surface 432 remains glare-free at all viewing angles.
  • the light emitting device 400 comprises a plurality of organic light emitting devices 402 each having a support structure 406 and a light exit surface 432 (illustrated in schematic enlargement 430).
  • the light exit surface 432 of at least one organic, light-emitting component 402 has a radiation direction 410 laterally to the support structure 406 of the organic light-emitting component 402 (illustrated in the enlarged illustration 430 by means of the arrow 410, wherein a non-lateral emission direction with the arrow 408 illustrated with respect to the support structure is).
  • the light exit surface 432 with lateral emission direction 410 can also be referred to as a non-planar light exit surface 432 with respect to the support structure 406.
  • the light exit surfaces of the nonplanar, organic, light emitting devices may have an area in a range from about 0.05 m 2 to about 5 m 2 in various developments, for example in a range of about 0.25 m 2 to about 0.5 m 2 .
  • the light exit surfaces may for example be formed from one piece or composed of several pieces.
  • the support structure 406 may serve as a reference point with respect to which the laterally outward Direction of radiation 410 is understood.
  • the organic, light-emitting component 402 can be held on a ceiling 404 or wall 404.
  • the lateral radiation direction 410 may also refer to the side relative to the wall 404 or ceiling 404, is held on the organic light emitting device 402.
  • Laterally outward can be understood as a laterally outer region of a convex shape or an outer, lateral surfaces or vectorial, lateral surface portion of a polygonal shape.
  • the lateral radiation direction 410 has the effect of reducing the number of organic, light emitting devices 402 required to achieve the minimum illuminance required in a room anywhere.
  • the complete glare-free nature of the organic, light-emitting components 402 can be retained, for example for viewing angles of the organic, light-emitting component that are greater than 65 °. This is possible without the use of additional optics or Entblendungs Modellen. This leaves the optically high-quality impression of the organic, light-emitting components as compared to the known anti-dazzle approach.
  • the lateral radiation direction 410 can be realized for example by means of a convex bending of mechanically flexible, organic, light-emitting components and / or a two-dimensional or three-dimensional convex arrangement of rigid organic, light-emitting component.
  • the light exit surface 432 with lateral radiation direction 410 has, for example, a curvature, for example a convex shape.
  • the light exit surface 432 with lateral emission direction 410 has a kink.
  • the light exit surface 432 with lateral emission direction 410 has at least one first light exit region and one second light exit region. The first light exit area is arranged at a distance from the second light exit area.
  • At least two organic light emitting devices 402 are juxtaposed at a first distance 412 from each other.
  • the first distance 412 is in a range of about 0.5 m to about 10 m, for example, in a range of about 1 m to about 6 m, for example, in a range of about 2 m to about 4 m.
  • the at least two organic, light-emitting components are arranged at a second distance 414 over a predetermined region 424.
  • the second distance 414 is, for example, in a range of about 1 m to about 5 m, for example in a range of about 1 m to about 3.5 m, for example in a range of about 1 m to about 2.5 m, for example in one Range from about 2.2 meters to about 3.5 meters, for example, in a range of about 2.2 meters to about 2.5 meters, for example, in a range of about 2.5 meters to about 5 meters.
  • the first distance 412 is greater than the second distance 414.
  • the at least two organic, light-emitting components are configured as non-Lambert'sehe emitters, for example, by the light exit surfaces 432 are not plan-trained or non-planar.
  • the two organic, light-emitting components may be configured, for example, as so-called Batwing emitters and are thus non-Lambert'sehe emitters.
  • the first distance 412 and the light exit surfaces 432 of the at least two organic, light-emitting components are set up such that the illuminance in the predefined area 424 is greater than a predefined illuminance 420.
  • the predetermined illuminance 420 has, for example, at least 500 lux.
  • the support structure 406 may be a housing or a part of a housing, such as a bottom plate.
  • the holding structure 406 may, for example, have through holes for passing through screws or other connecting elements by means of which the organic, light-emitting component is fastened to a wall.
  • the support structure 406 is configured, for example, as a known attachment structure of a wall or ceiling lamp.
  • the wall 404 is configured, for example, diffusely reflecting, for example white, or specular.
  • the area 424 to be illuminated has a dimension of 5 m ⁇ 10 m in the following exemplary embodiments.
  • the first distance is 3 m and the second distance is 2.2 m.
  • the organic, light-emitting components have a length of 1 m.
  • first distance 412 between the two organic, light-emitting components 402 is maintained for all forms (FIG. 3, FIG. 6) of the light exit surface 432.
  • the exemplary embodiments illustrated in the figures are a simplified, exemplary or illustrative representation of a plurality of organic, light-emitting components.
  • the illuminance profile along the connecting line directly below the multiple, organic light-emitting components are used.
  • the organic, light-emitting component has a carrier.
  • the carrier may be translucent or transparent.
  • the carrier serves as a carrier element for electronic elements or layers, for example light-emitting elements.
  • the support may include, for example, plastic, metal, glass, quartz and / or a semiconductor material or be formed therefrom.
  • the carrier may comprise or be formed from a plastic film or a laminate with one or more plastic films.
  • the carrier may be mechanically rigid or mechanically flexible.
  • the optoelectronic layer structure has a first electrode layer which has a first contact section, a second contact section and a first electrode.
  • the carrier with the first electrode layer can also be referred to as a substrate.
  • a first, not shown, barrier layer for example a first barrier thin layer, may be formed between the carrier and the first electrode layer.
  • the first electrode is electrically isolated from the first contact portion by means of an electrical isolation barrier.
  • the second contact section is electrically coupled to the first electrode of the optoelectronic layer structure.
  • the first electrode may be formed as an anode or as a cathode.
  • the first electrode may be translucent or transparent.
  • the first electrode comprises an electrically conductive material, for example metal and / or a conductive conductive oxide (TCO) or a layer stack of several layers comprising metals or TCOs.
  • the first electrode may, for example, a Layer stack of a combination of a layer of a metal on a layer of a TCOs, or vice versa.
  • An example is a silver layer deposited on an indium-tin oxide (ITO) layer (Ag on ITO) or ITO-Ag-ITO multilayers.
  • the first electrode may alternatively or in addition to the materials mentioned include: networks of metallic nanowires and particles, for example of Ag, networks of carbon nanotubes, graphene particles and layers and / or networks of semiconducting nanowires.
  • An optically functional layer structure for example an organic functional layer structure, of the optoelectronic layer structure is formed above the first electrode.
  • the organic functional layer structure may, for example, have one, two or more partial layers.
  • the organic functional layer structure may include a hole injection layer, a hole transport layer, an emitter layer, an electron transport layer and / or a
  • Hole injection layer serves to reduce the band gap between the first electrode and hole transport layer.
  • the hole conductivity is larger than the electron conductivity.
  • the hole transport layer serves to transport the holes.
  • the electron conductivity is larger than the hole conductivity.
  • the electron transport layer serves to transport the electrons.
  • the electron injection layer serves to reduce the band gap between second electrode and
  • the organic functional layer structure may have one, two or more functional layer structure units which each have the sub-layers and / or further intermediate layers.
  • a second electrode of the optoelectronic layer structure is formed, which is electrically coupled to the first contact section.
  • the second electrode may be formed according to one of the configurations of the first electrode, wherein the first electrode and the second electrode may be the same or different.
  • the first electrode serves, for example, as the anode or cathode of the optoelectronic layer structure.
  • the second electrode serves as a cathode or anode of the optoelectronic layer structure corresponding to the first electrode.
  • the optoelectronic layer structure is an electrically and / or optically active region.
  • the active region is, for example, the region of the organic, light-emitting component in which electrical current flows for operation of the optoelectronic component and / or in which electromagnetic radiation is generated or absorbed.
  • a getter structure (not shown) may be arranged on or above the active area.
  • the getter layer can be translucent, transparent or opaque.
  • the getter layer may include or be formed of a material that absorbs and binds substances that are detrimental to the active area.
  • An encapsulation layer of the optoelectronic layer structure which encapsulates the optoelectronic layer structure, is formed over the second electrode and partly over the first contact section and partially over the second contact section.
  • the encapsulation layer may be formed as a second barrier layer, for example as a second barrier thin layer.
  • the encapsulation layer can also be referred to as thin-layer encapsulation.
  • the encapsulation layer forms a barrier to chemical contaminants or atmospheric agents, in particular to water (moisture) and oxygen.
  • the encapsulation layer can be formed as a single layer, a layer stack or a layer structure.
  • the encapsulation layer may include or be formed from: alumina, zinc oxide, zirconia, titania, hafnia, tantalum oxide, lanthania, silica, silicon nitride, silicon oxynitride, indium tin oxide,
  • the first barrier layer may be formed on the carrier corresponding to a configuration of the encapsulation layer.
  • a first recess of the encapsulation layer is formed over the first contact section and a second recess of the encapsulation layer is formed over the second contact section.
  • a first contact region is exposed and in the second recess of the encapsulation layer, a second contact region is exposed.
  • the first contact region serves for electrically contacting the first contact section and the second contact region serves for electrically contacting the second contact section.
  • an adhesive layer is formed over the encapsulation layer.
  • the adhesive layer has, for example, an adhesive, for example an adhesive, for example a laminating adhesive, a lacquer and / or a resin.
  • the adhesive layer may, for example, comprise particles which scatter electromagnetic radiation, for example light-scattering particles.
  • the adhesive layer serves to attach the cover body to the encapsulation layer.
  • the cover body has, for example, plastic, glass and / or metal.
  • the covering body can essentially be made of glass be formed and a thin metal layer, such as a metal foil, and / or a graphite layer, such as a graphite laminate, have on the glass body.
  • the cover body serves to protect the conventional organic, light-emitting component, for example against mechanical forces from the outside. Further, the cover body may serve for distributing and / or dissipating heat generated in the conventional optoelectronic component.
  • the glass of the covering body can serve as protection against external influences
  • the metal layer of the covering body can be used for distributing and / or dissipating the heat arising during operation of the conventional optoelectronic component.
  • 5 shows a schematic representation of an organic, light-emitting component and its
  • FIG. 7 illustrates an enlarged illustration 500 of an exemplary embodiment of an organic, light-emitting component 402, 530 of a light-emitting device, which essentially can correspond to an embodiment described above.
  • Light exit surface 432 has a convex shape, for example in the form of an ellipsoid having a first axis 502 and a second axis 504.
  • the convex shape can be realized for example by means of bending or bending a flexible, organic, light-emitting device.
  • the ratio of second axis 504 to first axis 502 may range from about 0.1 to about 10.
  • FIG. 5 is the luminous intensity distribution curve 514 in a polar coordinate diagram 510 of the described organic, light emitting device 530 in the case of a specular wall 404 and ceiling 404, respectively.
  • FIG. 5 Further illustrated in FIG. 5 is the luminous intensity distribution curve 516 in a polar coordinate diagram 520 of the described organic light-emitting component 530 for the case of a diffusely reflecting or diffusely reflecting wall 404 or ceiling 404.
  • a non-planar light exit surface causes an organic, light-emitting component 402, 530 to exhibit a non-Lambertian emission characteristic.
  • FI6.6 shows a perspective view of a light-emitting device according to various embodiments with organic, light-emitting components according to FIG. 5 and the resulting illuminance in a predetermined range.
  • the illuminance for the case of a diffusely reflecting wall 404 or ceiling 404 is illustrated as intensity histogram 610 and intensity distribution 620, which corresponds to the perspective view of the light-emitting device 600 with the organic light , light emitting devices 402, 530 and the area to be illuminated 424 is superimposed.
  • the ratio between the minimum illuminance 626 between the organic, light-emitting components 402 in the predetermined region 424 and the maximum illuminance 624 along the connecting line 622 below the organic, light-emitting components can be seen.
  • a conventional arrangement of light sources (FIG. 3) has a percentage ratio of 85%.
  • the illustrated in Figure 6 embodiment of a light-emitting device has a percentage ratio of 90%.
  • the illuminance in the predetermined region can be increased by approximately 6%, with the arrangement otherwise the same, without the organic, light-emitting components being dazzled thereby.
  • the decrease in the luminance between the organic, light-emitting components 402 can be minimized.
  • the organic, light-emitting components can be arranged at a greater distance 412 from one another on account of this otherwise higher illuminance.
  • the better ratio for the ellipsoidal light emitting device 600 having ellipsoidal shaped light exit surfaces implies that the first distance 412 may be larger than in the prior art light sources (FIG. 3).
  • multiple organic light emitting devices 402 are in rows arranged. Each row can have at least two organic, light-emitting components.
  • the rows can be arranged parallel to one another.
  • the organic light emitting devices illustrated in the figures are organic light emitting devices of the same row or different rows.
  • several rows of organic, light-emitting components are arranged along the x-direction (see, for example, FIG. 3 or FIG. 6).
  • the rows are arranged, for example, at a distance from each other.
  • several organic, light-emitting components line up directly.
  • the arrangement of organic, light-emitting components in rows makes it possible to eliminate or reduce the drop in illuminance between the organic, light-emitting components, for example in the x-direction.
  • 7 shows a schematic representation of an organic, light-emitting component and its
  • FIG. 7 illustrates an enlarged illustration 700 of an exemplary embodiment of an organic, light-emitting component 402, 730 of a light-emitting device, which essentially can correspond to an exemplary embodiment described above.
  • Light exit surface 432 at least a first
  • Light exit area 706 can / can each plan or in
  • Light exit area 704 and the second Light exit area 706 are arranged at an angle 702 to each other.
  • the angle 702 is in a range of about 0 ° to about 180 °.
  • the angle 702 causes a non-planar arrangement of the light exit regions 704, 706.
  • planar light exit regions 704, 706 can form a non-planar light exit surface 432.
  • the non-planar light exit regions 704, 706 can be arranged at an angle 702 relative to one another by means of the support structure 406.
  • Light exit region 706 to each other back-to-back be arranged, see for example also FIG.8.
  • a concave or concave-like shape of the light exit surface 732 would result, whereby a radiation of light from the light exit surface 432 would be reduced laterally outward.
  • FIG. 7 Further illustrated in FIG. 7 is the luminous intensity distribution curve 714 in a polar coordinate diagram 710 of the described organic light-emitting component 730 in the case of a specular wall 404 or ceiling 404.
  • FIG. 7 Further illustrated in FIG. 7 is the luminous intensity distribution curve 716 in a polar coordinate diagram 720 of the described organic light-emitting component 730 in the case of a diffusely reflecting or diffusely reflecting wall 404 or ceiling 404.
  • the luminous intensity distribution curve indicates the luminous flux as a function of the emission angle in combination with a specularly reflecting ceiling 710 and with a diffusely reflecting ceiling 720.
  • the combination with a diffusely reflecting ceiling 720 represents in a first approximation the use in a typical room. It can be seen from the light intensity distribution curves 714, 716 that a non-planar arrangement of the light exit area 704, 706 causes an organic, light-emitting component 730 to cause a VietnameseLambert "see radiating characteristic.
  • FIG. 8 shows a schematic representation of an organic, light-emitting component and its
  • FIG. 8 illustrates an enlarged illustration 800 of an exemplary embodiment of an organic, light-emitting component 402, 830 of a light-emitting device, which essentially can correspond to an exemplary embodiment described above.
  • Light exit surface 432 a first light exit area 802, a second light exit area 804 and optionally a third light exit area 806.
  • the light exit areas 802, 804, 806 may / may be planar or substantially planar (illustrated in FIG. 8 surface normal of the light exit areas illustrated by the arrows).
  • the first light exit region 802 and the second light exit region 804 are opposite each other, for example, back-to-back.
  • Light exit region 806 may be arranged at an angle to the first light exit region 802 and / or the second light exit region 804. Alternatively, between the first light exit region 802 and the second light exit region 804, a non-emitting region, ie an optically inactive region, be provided - ie, a third light exit region 806 would not be provided.
  • planar light exit regions 802, 804 can form a non-planar light exit surface 432.
  • the non-planar light exit regions 802, 804 can be arranged at a distance from one another by means of the support structure 406 and / or the third light exit region 806.
  • the organic light emitting device 402, 830 is formed as a bi- or omnidirectional light-emitting device.
  • FIG. 8 Further illustrated in FIG. 8 is the luminous intensity distribution curve 814 in a polar coordinate diagram 810 of the described organic light-emitting component 830 in the case of a specular wall 404 or ceiling 404.
  • FIG. FI6.8 is the luminous intensity distribution curve 816 in a polar coordinate diagram 820 of the described organic light emitting device 830 for the case of a diffusely reflecting wall 404 or ceiling 404.
  • FIG. 9 shows a flowchart of a method 900 for producing a light-emitting device according to various exemplary embodiments.
  • a method 900 for manufacturing a light-emitting device comprises providing Sl of a plurality of organic light-emitting components, each having a support structure 406 and a light exit surface 432.
  • the light exit surface 432 of at least one organic, light-emitting component 402 has a radiation direction 410 laterally to the support structure 406 of the organic, light-emitting component 402.
  • the method also has an arrangement S2 of at least two organic, light-emitting components 402 next to one another at a first distance 412 from one another.
  • the at least two organic, light-emitting components are arranged at a second distance 414 over a predetermined region 424.
  • the first distance 412 and the light exit surfaces 432 of the at least two organic, light-emitting components are set up in such a way that the illuminance in the predetermined area 424 is greater than or equal to a predetermined illuminance 420.
  • FIG. 12 shows a flow chart of a method 1000 for operating a light emitting device according to various embodiments.
  • a method 1000 of operating a light-emitting device is provided.
  • the light-emitting device 400 is formed according to one of the developments described above.
  • the method comprises supplying an electrical energy to the first organic, light-emitting component and the second organic, light-emitting component, such that the luminance of the light emitted from the first organic light emitting device and the second organic light emitting device is less than or equal to 3000 cd / m 2 .
  • a light-emitting device 600 which comprises a plurality of organic light-emitting components 402, each having a holding structure 406 and a light exit surface 432, wherein the light exit surface 432 of at least one organic, light-emitting component 402, a radiation direction 410 laterally to the support structure 406 of the organic light emitting device 402, wherein at least two organic, light emitting devices 402 are juxtaposed at a first distance 412 from each other, and the at least two organic light emitting devices are arranged at a second distance 414 over a predetermined area 424; wherein the first distance 412 and the light exit surfaces 432 of the at least two organic, light emitting devices 402 are arranged such that the illuminance 422 in the predetermined area 424 is greater than a predetermined illuminance 420.
  • the embodiment 1 further comprises the light exit surface 432 with lateral radiation direction 410 has a curvature.
  • the embodiment 2, that the light exit surface 432 has a convex shape.
  • one of the exemplary embodiments 1 to 3 has the light exit surface 432 with lateral emission direction 410 having a kink.
  • one of the exemplary embodiments 1 to 4 has the light exit surface 432 with lateral emission direction 410 having at least one first light exit region 704 and one second light exit region 706, wherein the first light exit region 704 is at a distance and / or an angle 702 from that second light exit region 706 is arranged.
  • one of the embodiments 1 to 5 has the first distance 412 being greater than the second distance 414.
  • one of the embodiments 1 to 6 has the second distance 414 having a value in a range of 1.0 m to 5 m.
  • the first distance 412 has a value in a range of 1.5 m to 5 m.
  • one of the embodiments 1 to 8 has the predetermined illuminance 520 being at least 500 lux.
  • one of the exemplary embodiments 1 to 9 has the two organic light-emitting components 402 configured as non-Lambert radiators.
  • one of the exemplary embodiments 1 to 10 has the two organic light-emitting components 402 set up as batwing emitters.
  • one of the embodiments 1 to 11 has the light-emitting Vorrichtving further comprises a wall 404 or ceiling 404, by means of which the holding structures of the plurality of organic light-emitting device are held.
  • the embodiment 12, that the wall or the ceiling is arranged diffusely reflective, for example, white.
  • a method 900 for producing a light-emitting device comprises providing a plurality of organic light-emitting components, each having a support structure 406 and a light exit surface 432, wherein the light exit surface 432 of at least one organic light emitting device has a radiation direction 410 laterally of the support structure 406 of the organic, light emitting device.
  • the method further comprises arranging S2 of at least two organic, light-emitting components next to one another at a first distance 412 from one another, wherein the at least two organic, light-emitting components 402 are arranged at a second distance 414 over a predetermined area 424.
  • the first distance 412 and the light exit surfaces 432 of the at least two organic, light-emitting components 402 are set up in such a way that the illuminance in the predefined area 424 is greater than a predefined illuminance.
  • the embodiment 14 further includes that the light exit surface 432 with lateral radiation direction 410 has a curvature.
  • the exemplary embodiment 15 has the light exit surface 432 having a convex shape.
  • one of the exemplary embodiments 14 to 16 has the light exit surface 432 with a lateral emission direction 410 having a kink.
  • one of the exemplary embodiments 14 to 17 has the light exit surface 432 with lateral emission direction 410 having at least one first light exit region 704 and one second light exit region 706, wherein the first light exit region 704 is at a distance and / or an angle 702 from that second light exit region 706 is arranged.
  • one of the exemplary embodiments 14 to 18 has the first distance 412 being greater than the second distance 414.
  • one of the exemplary embodiments 14 to 18 has the second distance 414 having a value in a range of 1.0 m to 5 m.
  • one of the exemplary embodiments 14 to 20 has the first distance 412 having a value in a range of 1.5 m to 5 m.
  • one of the exemplary embodiments 14 to 21 has the predetermined illuminance 520 being at least 500 lux.
  • one of the exemplary embodiments 14 to 22 has the two organic light-emitting components 402 set up as non-Lambert radiators.
  • one of the embodiments 14 to 24 has the light emitting device further comprising a wall 404 or ceiling 404 by means of which the holding structures of the plurality of organic light emitting devices are held.
  • the embodiment 25, that the wall or the ceiling is arranged diffusely reflective, for example white.
  • a method 1000 for operating a light-emitting device is concerned.
  • the light emitting device 600 is configured, for example, according to any one of Embodiments 1 to 13.
  • the method includes supplying electric power to the first organic light emitting device 402 and the second organic light emitting device 402 such that the luminance of the light emitted from the first organic light emitting device and the second organic light emitting device is smaller than or equal to 3000 cd / m 2 .
  • the light-emitting device may comprise a multiplicity of organic light-emitting components which have the same or different non-planar light-emitting surfaces.
  • the organic light emitting devices of the light emitting device may be arranged in a uniform or structured arrangement with respect to each other.
  • the first distance between the organic light emitting devices may vary, for example, in the light emitting device.
  • the dimension of the light exit surface in the individual organic be different light emitting devices.
  • the light exit surface of organic light-emitting devices in the vicinity of windows may have a smaller dimension than the light-exit surface of pre-organic, light-emitting devices in the middle of the room or in the vicinity of the door of the room.

Landscapes

  • Electroluminescent Light Sources (AREA)

Abstract

Selon différents exemples de réalisation, l'invention concerne un dispositif électroluminescent (600). Le dispositif électroluminescent présente plusieurs composants électroluminescents {402} organiques ayant chacun une structure de retenue (406) et une surface de sortie de lumière (432). La surface de sortie de lumière (432) d'au moins un composant (402) électroluminescent organique présente une direction de rayonnement (410) latéralement à la structure de retenue (406) du composant (402) électroluminescent organique. Au moins deux composants (402) électroluminescents organiques sont disposés côte à côte à une première distance (412) l'un de l'autre et lesdits au moins deux composants électroluminescents organiques sont disposés à une seconde distance (414) sur une zone (424) prédéfinie. La première distance (412) et les surfaces de sortie (432) des au moins deux composants (402) électroluminescents organiques sont conçues de sorte que l'intensité d'éclairage (422) dans la zone prédéfinie (424) est supérieure à une intensité d'éclairage prédéfinie (420).
PCT/EP2017/063316 2016-06-06 2017-06-01 Dispositif électroluminescent, procédé de production et procédé de fonctionnement WO2017211681A1 (fr)

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DE102016110411.6A DE102016110411A1 (de) 2016-06-06 2016-06-06 Lichtemittierende vorrichtung, verfahren zum herstellen und verfahren zum betreiben desselben

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EP2133854A1 (fr) * 2007-03-30 2009-12-16 Pioneer Corporation Dispositif d'émission de lumière
US20110249450A1 (en) * 2010-04-09 2011-10-13 Ngai Peter Y Y Oled luminaire having intensity shaping for oled light source
US20130044487A1 (en) * 2011-08-16 2013-02-21 Universal Display Corporation Dynamic stretchable oled lamp
US20130301249A1 (en) * 2009-05-05 2013-11-14 Abl Ip Holding, Llc Low profile luminaire for grid ceilings

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WO2007049213A2 (fr) * 2005-10-27 2007-05-03 Koninklijke Philips Electronics N.V. Dispositifs d'emission de lumiere directionnelle, tels que des affichages multivue
DE102006060781B4 (de) * 2006-09-29 2021-09-16 Pictiva Displays International Limited Organisches Leuchtmittel
DE102013107116B4 (de) * 2013-07-05 2022-05-25 Pictiva Displays International Limited Organische Leuchtdiode und Verfahren zum Betreiben einer organischen Leuchtdiode

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Publication number Priority date Publication date Assignee Title
EP2133854A1 (fr) * 2007-03-30 2009-12-16 Pioneer Corporation Dispositif d'émission de lumière
US20130301249A1 (en) * 2009-05-05 2013-11-14 Abl Ip Holding, Llc Low profile luminaire for grid ceilings
US20110249450A1 (en) * 2010-04-09 2011-10-13 Ngai Peter Y Y Oled luminaire having intensity shaping for oled light source
US20130044487A1 (en) * 2011-08-16 2013-02-21 Universal Display Corporation Dynamic stretchable oled lamp

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