WO2015059015A1 - Organisches lichtemittierendes bauelement - Google Patents
Organisches lichtemittierendes bauelement Download PDFInfo
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- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
- H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
- H10K50/131—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit with spacer layers between the electroluminescent layers
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Definitions
- Organic light-emitting component The invention relates to an organic light-emitting component.
- An organic light emitting device such as an organic light emitting diode (OLED)
- OLED organic light emitting diode
- light emitted in the white spectral range may have multiple emitter layers having emitters that emit blue, green and red or blue and red-green, especially in the corresponding spectral range.
- the emitter layers can also be called
- Emission layers are called.
- the emitter layers may be stacked or not stacked.
- stacked means that the individual emitter layers are coupled together via a charge carrier pair generation layer sequence (CGL).
- CGL charge carrier pair generation layer sequence
- the disadvantage is that it is not possible with the previously known emitters in this concept with only 3 different emitters to cover the entire spectral range so that a color rendering index (CRI) of greater than 90 results.
- the color rendering index is a photometric quantity with which the quality of the color rendering of light sources is more equally correlated
- the abbreviated notation for the color rendering index is R a .
- the index-a stands for general color rendering index, which nu the values of the first eight test colors (R 1r R 2 , R 8 ) according to DIN includes.
- the emitting emitter i. the emission intensity is too low in this area. This has a negative effect on the color rendering index.
- Known OLEDs with a CRI greater than 90 regularly have more than three emitter layers, for example five.
- additional emitter layers are formed, which provide for the additional emission in the individual wavelength ranges.
- the additional emitter layers can help to decrease the efficiency of the OLED.
- an OLED with a CRI of 93 may have five emitter layers each with one emitter and only a small one
- Additional emitter layers can further contribute to the fact that the corresponding OLED can only be produced relatively laboriously and therefore at relatively high costs compared to an OLED having two or three emitter layers.
- producing such complicated OLEDs may require a lab with a cluster tool or the use of additional sources for multiple materials in an in-line plant.
- an organic light-emitting device which has a high CRI, for example a CRI greater than 90, and / or which has a high efficiency, and / or which has a maximum of two light-emitting layers and / or a maximum of three emitters and / or cost can be prepared, for example in an inline process.
- an organic light emitting device has a substrate.
- a first electrode is formed over the substrate.
- An organic functional layer structure is formed over the first electrode.
- a second electrode is formed over the organic functional layer structure.
- the organic functional layer structure has first organic emitters emitting in the blue spectral range, second organic emitters emitting in the green spectral range, and third organic emitters emitting in the red spectral range. The third organic emitters have the
- ILCT Intra-Ligand Charge Transfer
- the third organic emitter is, for example, one
- Transition metal complex with a central metal ion of the third transition metal period as an emitter The strong spin-orbit coupling induced by the central metal ion leads to a relaxation of the transition ban from a singlet state to a triplet state.
- the third emitter with the small singlet-triplet split contributes to a CRI greater than 90 can be realized easily and inexpensively with high efficiency.
- the singlet-triplet splitting is the energetic splitting between the lowest excited singlet state and the deepest excited triplet state. In particular, a white one
- stacked OLEDs are dispensed with and so a very simple OLED structure are possible.
- a cover body may be formed over the second electrode.
- the particularly high CRI becomes, for example, thereby
- the third emitter is a red one
- Spectral range, phosphorescent emitter is.
- the third emitter is a deep red
- Emitter shows, for example, at room temperature both a deep red emission from the triplet state, as well as a higher energy emission band, which results from the thermally activated occupation of a higher singlet state.
- This behavior can be caused, for example, by the small singlet-triplet splitting.
- the small singlet-triplet split can be caused, for example, by the small singlet-triplet splitting.
- emitters with a high intra-ligand charge transfer ⁇ ILCT) character can be realized in their lowest electronic states
- Examples of these are the compounds shown in FIG. 4 and FIG. These compounds are triplet emitters, which have an additional high-energy emission band, which from a thermally occupied already at room temperature
- the third red emitter organic emitters are compounds selected from formulas (I), (Ia) and (II):
- Transition metal preferably selected from the group consisting of Re, Ru, Os, Co, Rh, Ir, Pd, Pt, Cu, Ag and Au;
- Each group FG X to FG 5 is independently selected from the group
- Cycloalkyl C6-C14 aryl, 5-14 membered heteroaryl, in which 1 to 4 ring atoms independently nitrogen, oxygen or
- Sulfur are 5-14 membered heteroalicyclyl in which 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, where, if the group is substituted, the one or more
- Substituent (s) is / are selected from linear or branched C 1-12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14 aryl, 5-14 membered heteroaryl, in which 1 to 4 ring atoms are independent Nitrogen, oxygen or sulfur are 5-14 membered heteroalicyclyl wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, alkylaryl, arylalkyl, heteroarylalkyl and
- each R, R 'and R " is independently selected from the group consisting of hydrogen, linear or branched C 1-12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14 aryl, 5-14 membered Heteroaryl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, 5-14 membered heteroalicyclyl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, alkylaryl, arylalkyl, heteroarylalkyl and
- Alkylheteroaryl, or R and R ' when attached to a common nitrogen atom, together with the nitrogen atom form an unsubstituted cyclic group selected is selected from the group consisting of 5-14 membered heteroaryl wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur and 5-14 membered heteroalicyclyl wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur;
- n is an integer from 0 to 5;
- each "n” is an integer from 0 to 3
- every "o" is an integer from 0 to 4.
- Transition metal preferably selected from the group consisting of Re, Ru, Os, Co, Rh, Ir, Pd, Pt, Cu, Ag and Au;
- X is C-FG 6 , CH or N;
- each group FG 6 , FG 7 , FG 8 is independently selected from the group consisting of linear or branched C 1 -C 12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14 aryl, or 5-14 membered Heteroaryl wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, 5-14 membered heteroalicyclyl, in which 1 to 4 ring atoms
- unsubstituted cyclic group which is selected from the group consisting of C3-C8 cycloalkyl, C6-C14 aryl, 5-14 membered heteroaryl, in which 1 to 4 ring atoms
- R3 and R5 are independently nitrogen, oxygen or sulfur, wherein, if the group is substituted, the substituent (s) is / are selected from linear or branched C1-12 Alkyl, C2-C12 alkenyl, C2-C12 alkynyl, C3-C8 cycloalkyl, C6-C14 aryl, 5-14 membered heteroaryl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, 5-14 membered keteroalicyclyl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, alkylaryl, arylalkyl, heteroarylalkyl and
- each R, R "and R” is independently selected from the group consisting of hydrogen, linear or branched C 1-12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14 aryl, 5-14 membered Heteroaryl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, 5-14 membered heteroalicyclyl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, alkylaryl, arylalkyl, heteroarylalkyl and
- p is an integer from 0 to 3
- each "q" is independently an integer from 0 to 4.
- Embodiments which are disclosed below, also to these specific embodiments, in which the third, in the red spectral region emitting organic emitter of compounds of formulas (I), (Ia) and (II), as already defined, can relate ,
- the singlet-triplet splitting of the third organic emitter is in a range between 0.05 eV and 0.3 eV. In various embodiments, the singlet-triplet splitting of the third organic emitter is in a range between 0.1 eV and 0.2 eV. In various embodiments, the singlet-triplet split of the third organic emitter is about 0.25 eV.
- one of the ligands of the metal atom of the third organic emitter has at least one aromatic group and optionally at least one functional group attached thereto.
- the functional group is selected from an alkyl group, an aromatic group and a halogen group.
- the aromatic is N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-phenyl
- the halo group is fluoro, chloro, bromo or iodo.
- the organic functional layer structure comprises a first emitter layer comprising at least one of the organic emitters, a second emitter layer having at least one of the organic emitters, and / or a third emitter layer having at least one of the organic emitters.
- a first intermediate layer is formed between the first emitter layer and the second emitter layer.
- the second emitter layer is formed between the third emitter layer and the third emitter layer.
- the Emitter layer formed a second intermediate layer.
- the first intermediate layer may, for example, a first
- the second intermediate layer may be, for example, a second intermediate electrode or a second carrier generation layer structure (CGL).
- Emitter layers on one of the organic emitters are Emitter layers on one of the organic emitters.
- the emitter layers each have exactly one emitter, ie exactly one type of organic emitter, for example either the first organic emitter or the second organic emitter or the third organic emitter.
- the first emitter layer has the first organic emitter
- the second emitter layer has the second organic emitter
- the third emitter layer has the third organic emitter.
- the emitter layers may be stacked in any order.
- Emitter layers of two of the organic emitters are Emitter layers of two of the organic emitters.
- the first or the second emitter layer has two of the organic emitters.
- the first emitter layer has the first organic emitter and the second emitter layer has the second organic emitter
- the first emitter layer has the first organic emitter and the second organic emitter, and the second emitter layer has the third organic emitter.
- the first emitter layer comprises the first organic emitter and the third organic one
- Emitter on and the second emitter layer has the second organic emitter. In these cases, it is optionally possible to dispense with the third emitter layer. Furthermore, the first emitter layer may be above or below the second
- Emitter layer be formed.
- An advantage of this OLED is that the organic functional layer structure can be produced overall with a small thickness, since only two separate emitter layers can be used.
- At least one of the emitter layers has three of the organic emitters.
- the first emitter layer has the first, the second and the third organic emitter. In this case, it is optionally possible to dispense with the second and / or the third emitter layer.
- An advantage of this OLED is that the organic functional layer structure can be produced with a small thickness, since only one
- Emitter layer can be used.
- organic emitters can be formed as a separate unit above or below the emitter layer with the third organic emitters.
- emitting second organic emitter and emitting in the red spectral region third organic emitter may be arranged in the same or in different layers of the corresponding emitter layer.
- the second organic emitters emitting in the green spectral range and / or the third organic emitters emitting in the red spectral range can each act as individual ones
- Emitter layers are present or in one or two
- Emitter layers be doped.
- the organic light emitting device emits white light.
- FIG. 1 shows the emission spectrum of a conventional white organic light-emitting component as well as the spectral color rendering values of the eight standard color charts;
- Fig. 2 is a table showing a plurality of color rendering indices of the spectrum of a conventional organic light emitting device shown in Fig. 1;
- Figure 3 is a sectional view of an embodiment of a layer structure of an organic
- Figure 4 shows an embodiment of an organic emitter having a low singlet-triplet splitting
- Figure 5 shows an embodiment of an organic emitter having a low singlet-triplet split
- Figure 6 is a sectional view of an embodiment of a layer structure of an organic
- Figure 7 is a sectional view of an embodiment of a layer structure of an organic
- FIG. 8A Embodiments of organic emitters
- FIG. 8B Embodiments of organic emitters
- FIG. 9A Embodiments of organic emitters
- FIG. 9B Embodiments of organic emitters
- FIG. 9C Embodiments of organic emitters
- FIG. 9D Embodiments of organic emitters
- FIG. 9E Embodiments of organic emitters
- FIG. 9F Embodiments of organic emitters.
- An organic light emitting device can be used in any organic light emitting device.
- various embodiments may be formed as an organic light emitting diode (OLED) or as an organic light emitting transistor.
- OLED organic light emitting diode
- the organic light emitting device may be part of an integrated circuit in various embodiments.
- a plurality of organic light-emitting components may be provided, for example housed in a common housing.
- Fig. 1 shows an emission spectrum of a conventional one
- the organic light-emitting device emits white light.
- the organic light-emitting device emits in white
- the white line represents the emission spectrum emitted by the OLED.
- the other curves represent the reflectivities of the test colors when illuminating the test colors with a standard light source, such as a black body.
- the conventional organic light-emitting device has a plurality of emitters, for example, emitters that emit blue, emitters that emit in the green, and emitters that emit in the red.
- the emitters which emit in the green and / or red can, for example, be arranged in a first light-emitting layer structure and emit yellow light together by color mixing.
- the emitters which emit in the green and / or red can be arranged, for example, in the same layer or in different layers of the first light-emitting layer structure.
- the blue emitting emitters may be in a second light emitting layer structure
- the yellow light from the first light-emitting layer structure and the blue light from the second light-emitting layer structure mix to the white light of the conventional organic
- the emitter emitting in the red is a conventional one
- Lich emitting component has a first spectral gap LI, ie a local minimum in the green spectral range, for example at about 540 nm, and falls in
- the second spectral gap L2 increases. If you try with one
- the first spectral gap LI increases.
- Fig. 2 is a table showing a plurality of color rendering indices of the spectrum of a conventional organic light-emitting device shown in Fig. 1, for example, the conventional organic light-emitting device explained above.
- Fig. 1 a conventional organic light-emitting device shown in Fig. 1, for example, the conventional organic light-emitting device explained above.
- Fig. 2 a table showing a plurality of color rendering indices of the spectrum of a conventional organic light-emitting device shown in Fig. 1, for example, the conventional organic light-emitting device explained above.
- the table are the
- Color rendering indices Ri to R 8 associated with their color rendering values.
- the color rendering value R 9 for saturated red is not entered in the table.
- the color rendering value 73 for the color light green R 4 and the color rendering value 46 for the color lilac violet R 8 are remarkably low. These low color rendering values correspond to the burglaries in the green and deep red spectral range shown in the emission spectrum according to FIG. A CRI greater than 90 is at these low
- Fig. 3 shows a detailed sectional view of a
- Light emitting device 10 may be formed as a top emitter and / or bottom emitter. If the organic
- light emitting device 10 is formed as a top emitter and bottom emitter, the organic
- light-emitting component 10 as an optically transparent component, for example a transparent organic compound
- Light emitting device 10 may be formed as a stacked OLED.
- the organic light-emitting component 10 has a carrier 12 and an active region over the carrier 12. Between the carrier 12 and the active region, a first, not shown, barrier layer, for example a first barrier thin layer, may be formed.
- Area comprises a first electrode 20, an organic functional layer structure 22 and a second electrode 23.
- the first electrode 20 is above the carrier 12
- the organic functional layer structure 22 is formed over the first electrode 20.
- the second electrode 23 is above the organic functional
- Layer structure 22 is formed. Above the active area an encapsulation layer 24 is formed.
- the encapsulation splitter 24 may be formed as a second barrier layer, for example as a second barrier thin layer.
- a cover body 38 is arranged. The cover body 38 may for example by means of a
- the active region is an electrically and / or optically active region.
- the active area is for example the area of the organic Iichtemittierenden device 10, in the organic ⁇ which electric current for operating
- light-emitting component 10 flows and / or in the electromagnetic radiation, in particular light, is generated or absorbed.
- the carrier 12 may be translucent or transparent.
- the carrier 12 serves as a carrier element for electronic elements or layers, for example light-emitting elements.
- the carrier 12 may comprise or be formed, for example, glass, quartz, and / or a semiconductor material or any other suitable material.
- the carrier 12 may be a plastic film or a
- Laminate with one or more plastic films Laminate with one or more plastic films
- the plastic may have one or more polyolefins. Furthermore, the plastic may have one or more polyolefins. Furthermore, the plastic may have one or more polyolefins. Furthermore, the plastic may have one or more polyolefins. Furthermore, the plastic may have one or more polyolefins. Furthermore, the plastic may have one or more polyolefins. Furthermore, the plastic may have one or more polyolefins. Furthermore, the plastic may have one or more polyolefins. Furthermore, the
- the carrier 12 may comprise or be formed from a metal, for example copper, silver, gold, platinum, iron, for example a metal compound,
- the carrier 12 may be formed as a metal foil or metal-coated foil.
- the carrier 12 may be part of or form part of a mirror structure.
- the carrier 12 may be a mechanically rigid region and / or have a mechanically flexible area and / or
- the first electrode 20 may be formed as an anode or as a cathode.
- the first electrode 20 may be translucent or transparent.
- the first electrode 20 comprises an electrically conductive material, for example metal and / or a conductive transparent oxide
- TCO transparent conductive oxide
- the first electrode 20 may comprise a layer stack of a coral of a layer of a metal on a layer of a TCO, 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.
- ITO indium-tin oxide
- metal for example, Ag, Pt, Au, Mg, Al, Ba, In, Ca, Sm or Li, as well as compounds, combinations or
- the metal is not
- Transparent conductive oxides are transparent, conductive materials, for example metal oxides, such as zinc oxide, tin oxide, cadmium oxide, titanium oxide, indium oxide, or indium tin oxide (ITO).
- metal oxides such as zinc oxide, tin oxide, cadmium oxide, titanium oxide, indium oxide, or indium tin oxide (ITO).
- binary metal oxygen compounds such as ZnO, SnO 2 or In 2 O 3
- ternary metal oxygen compounds such as AlZnO, Zn 2 SnO 4, Cd SnO 3, Zn SnO 3, Mgln 204, GalnO 3, Zn 2 In 2 O 5 or In 4 Sn 3 O 12 or mixtures are also included
- the first electrode 20 may alternatively or in addition to the materials mentioned: networks of metallic nanowires and - particles, such as Ag, networks from carbon nanotubes, graphene particles and layers and / or networks of semiconducting anodic wires.
- the first electrode 20 may have or be formed from one of the following structures: a network of metallic nanowires, for example of Ag, which are combined with conductive polymers
- the first electrode 20 may comprise electrically conductive polymers or transition metal oxides.
- the first electrode 20 may, for example, have a layer thickness in a range of 10 nm to 500 nm,
- nm for example, from less than 25 nm to 250 nm, for example from 50 nm to 100 nm.
- the first electrode 20 may be a first electrical
- the first electrical potential may be provided by a power source (not shown), such as a power source or a power source
- Electrode 20 are indirectly fed via the carrier 12.
- the first electrical potential may be, for example, the
- Ground potential or another predetermined reference potential is ground potential or another predetermined reference potential.
- the organic functional layer structure 22 may include a hole-in layer 40, a hole transport layer, a first emitter layer 42, an electron transport layer, and / or an electron injection layer 46.
- the hole injection layer 40 may be formed on or above the first electrode 20.
- the hole injection layer 40 may include or be formed from one or more of the following materials: HAT-CN, Cu (I) pFBz, OOx, WOx, VOx, ReOx, F4-TCNQ, NDP-2, NDP-9, Bi (III ) pFBz, F16CuPc; NPB ( ⁇ , ⁇ '- Bis (naphthalen-1-yl) - ⁇ , ⁇ '-bis (phenyl) -benzidine); beta-NPB ⁇ , ⁇ '-bis (naphthalen-2-yl) -N, N '-bis (phenyl) -benzidine); TPD ( ⁇ , ⁇ '-bis (3-methylphenyl) - ⁇ , ⁇ '-bis (phenyl) benzidine); Spiro TPD (N, N 1 -bis (3-methylphenyl) -N, N '-bis (phenyl) -benzidine);
- Spiro-NPB N, N'-bis (naphthalen-1-yl) -N, N'-bis (phenyl) -spiro
- DMFL-TPD ⁇ , ⁇ '-bis (3-methylphenyl) -N, N 1 -bis (phenyl) -9,9-dimethyl-fluorene
- DMFL-NPB ⁇ , ⁇ '-bis (naphthalen-1-yl) - ⁇ , ⁇ '-bis (phenyl) -9,9-dimethylfluorene
- DPFL-TPD ⁇ , ⁇ '-bis (3-methylphenyl) -N, N'-bis (phenyl) -9,9-diphenyl-fluorene
- DPFL-NPB ⁇ , ⁇ '-bis (naphthalen-1-yl) -N, N'-bis (phenyl) -9,9-diphenyl-fluorene
- Spiro-TAD (2
- the hole injection layer 40 may have a layer thickness in a range of about 10 nm to about 1000 nm, for example, in a range of about 30 nm to about 300 nm, for example, in a range of about
- the hole injection layer 40 On or above the hole injection layer 40, the
- Hole transport layer may be formed.
- Hole transport layer may comprise or be formed from one or more of the following materials: NPB (N, N 1 -bis (naphthalen-1-yl) -N, N '-bis (phenyl) -benzidine); beta-NPB ⁇ , ⁇ '-bis (naphthalen-2-yl) - ⁇ , ⁇ '-bis (phenyl) -benzidine); TPD
- the hole transport layer may have a layer thickness in a range of about 5 nm to about 50 nm,
- nm for example in a range of about 10 nm to about 30 nm, for example about 20 nm.
- the hole transport layer is the first one
- the Emitter layer 42 is formed.
- the first emitter layer 42 has fluorescent and / or phosphorescent emitters.
- the first emitter layer 42 has first emitters that emit blue, second emitters that emit in the green, and third emitters that have a deep red triplet emission and a higher energy thermally activated singlet
- the blue, green and red light of the first emitter layer 42 mixes with white light.
- the first emitter layer 42 thus emits white light.
- Molecules are arranged as third emitters, as they are
- the first emitter layer 42 may be organic polymers
- organic oligomers organic monomers, organic small, non-polymeric molecules ("small molecules”) or a
- Emitter layer 42 may be one or more of the following
- organic or organometallic compounds such as derivatives of
- Polyfluorene, polythiophene and polyphenylene eg 2- or 2,5-substituted poly-p-phenylenevinylene
- metal complexes such as iridium complexes such as green phosphorescent Ir (ppy) 3 (tris (2-phenylpyridine) iridium III) and / or as blue phosphorescent FIrPic (bis (3,5-difluoro-2- (2-pyridyl) phenyl- (2-carboxypyridyl) iridium III) and / or blue fluorescent DPAVBi (4, -bis [4- (di-p-tolylamino ) styryl] biphenyl.
- iridium complexes such as green phosphorescent Ir (ppy) 3 (tris (2-phenylpyridine) iridium III) and / or as blue phosphorescent FIrPic (bis (3,5-difluoro-2- (2-pyr
- the first organic emitter can be any organic emitter.
- SEB-097 or BD314 can be used. Furthermore, it is possible to use polymer emitters which
- the emitters may be suitably embedded in a matrix material, for example an organic material or a polymer, for example an epoxide.
- the first emitter layer 42 may have a layer thickness in a range of about 5 nm to about 50 nm, for example in a range of about 10 nm to about 30 nm, for example about 20 nm.
- the electron transport layer may be one or more of the following materials on iron or formed therefrom: NET 18, ⁇ 2, 2, 1 , 2 "- (1, 3, 5-benzene triyl) tris (1-phenyl-1-H-benzimidazoles 2 - (4-biphenylyl) -5- (4-tert-butylphenyl) -1,3,4-oxadiazoles, 2,9-dimethyl-4,7-diphenyl-1, IC- phenanthroline (BCP); 8-hydroxyquinolinolato-lithium, 4 - (naphthalen-1-yl) -3,5-diphenyl-4H-1,2,4-triazole; 1,3-bis [2- (2,2'-bipyridines-6-yl) -1,3,4-oxadiazol-5-yl] benzene; 4,7-diphenyl-1,10-phenanthroline (BPhen); 3- (4-biphenyly
- the electron transport layer may have a layer thickness
- iron in a range of about 5n to about 50nm, for example in a range of about 10 to about 30nm, for example about 20nm.
- Electron injection layer 46 may include or be formed from one or more of the following materials: NDN-26, MgAg, Cs 2 CO 3, Cs 3 PO 4, Na, Ca, K, Mg, Cs, Li, LiF; 2, 2, 1 , 2 "- (1,3,5-triethylenetriyl) tris (1-phenyl-1-H-benzimidazoles); 2- (4-biphenylyl) -5- (4-tert-butylpheny1) - 1 , 3,4-oxadiazoles, 2, 9-dimethyl-4,7-diphenyl-l, 10-phenanthrolines (BCP), 8-hydroxyquinolinolato-lithium, 4 - (naphthalen-1-yl) -3, 5-diphenyl - 4H-1,2,4-triazoles; 1,3-bis [2- (2,2'-bipyridine-6-yl) -1,3,4-oxadiazo-5-yl] benzene; 4,7-diphenyl -1
- the electron injection layer 46 may have a layer thickness in a range of about 5 nm to about 200 nm, for example, in a range of about 20 nm to about 50 nm, for example about 30 nm.
- the organic functional layer structure 22 may be any organic functional layer structure 22.
- a layer thickness of at most about 3 ⁇ , ⁇ for example, a layer thickness of at most about 1 / im, for example, a layer thickness of at most about 300 nm.
- the organic light-emitting component 10 may optionally have further functional layers, for example arranged on or above the first emitter layer 42 or on or above the electron-transport layer.
- the further functional layers can be, for example, internal or external input / output coupling structures, which can further improve the functionality and thus the efficiency of the organic light-emitting component 10.
- the second electrode 23 may be formed according to any one of the configurations of the first electrode 20, wherein the first electrode 20 and the second electrode 23 are the same or can be designed differently.
- the second electrode 23 may be formed as an anode or as a cathode.
- the second electrode 23 may have a second electrical connection to which a second electrical potential can be applied.
- the second electrical potential may be provided by the same or a different energy source as the first electrical potential.
- the second electrical potential can be different from the first electrical potential.
- the second electrical potential can be different from the first electrical potential.
- Difference from the first electrical potential has a value in a range of about 1.5 V to about 20 V, for example, a value in a range of about 2.5 V to about 15 V, for example, a value in a range of about 3 V. up to about 12 V * .
- the encapsulation layer 24 may also be referred to as
- Thin-layer encapsulation may be referred to.
- Encapsulation layer 24 may be translucent or
- Then be formed transparent layer.
- Encapsulation layer 24 forms a barrier to chemical contaminants or atmospheric agents, especially to water (moisture) and oxygen.
- the encapsulation layer 24 is formed so as to be comprised of substances that are organic
- the encapsulation layer 24 may be formed as a single layer, a layer stack, or a layered structure.
- the encapsulation layer 24 may include or be formed from: alumina, zinc oxide, zirconia,
- the encapsulation layer 24 may have a layer thickness of about 0.1 nm (one atomic layer) to about 1000 nm
- the encapsulation layer 24 may comprise a high refractive index material, for example, one or more high refractive index materials, such as one
- the first barrier layer on the carrier 12 corresponding to a configuration of
- Encapsulation layer 24 may be formed.
- the encapsulation layer 24 may be formed, for example, by a suitable deposition method, e.g. by atomic layer deposition (ALD), e.g. a plasma-assisted
- PEALD Plasma Enhanced Atomic Layer Deposition
- CVD plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-assisted plasma-
- PECVD Plasma Enhanced Chemical Vapor Deposition
- the coupling / decoupling layer can be a matrix and distributed therein
- the adhesive layer 36 may include, for example, adhesive and / or paint, by means of which the cover body 38, for example, arranged on the encapsulation layer 24, for example glued, is.
- the adhesive layer 36 may be transparent or translucent.
- Adhesive layer 36 may, for example, comprise particles which scatter electromagnetic radiation, for example light-scattering particles. As a result, the adhesive layer 36 can act as a scattering layer and can lead to an improvement in the color angle distortion and the coupling-out efficiency.
- dielectric As light-scattering particles, dielectric
- Metal oxide for example silicon oxide (SiO 2), zinc oxide (ZnO), zirconium oxide (ZrO 2), indium tin oxide (ITO) or indium zinc oxide (IZO), gallium oxide (Ga 2 Ox) aluminum oxide, or titanium oxide.
- Other particles may also be suitable provided they have a refractive index that is different from the effective refractive index of the matrix of the adhesive layer 36
- Nanoparticles metals such as gold, silver, iron nanoparticles, or the like may be provided as light-scattering particles.
- the adhesive layer 36 may have a layer thickness of greater than 1 ⁇ , ⁇ , for example, a layer thickness of several / in.
- the adhesive may be a lamination adhesive.
- the adhesive layer 36 may have a refractive index that is less than the refractive index of the cover body 38.
- the adhesive layer 36 may include, for example, a
- the adhesive layer 36 may also comprise a high refractive index adhesive comprising, for example, high refractive non-diffusing particles and a
- the active area On or above the active area may be a so-called
- Gettering layer or getter structure i. a laterally structured getter layer (not shown) may be arranged.
- the getter layer can be translucent, transparent or opaque.
- the getter layer may include or be formed from a material that includes fabrics
- a getter layer may include or be formed from a zeolite derivative.
- the getter layer may have a layer thickness of greater than about 1 ⁇ m, for example a layer thickness of several ⁇ m.
- the getter layer may include a lamination adhesive or may be embedded in the adhesive layer 36.
- the covering body 38 can be formed, for example, by a glass body, a metal foil or a sealed plastic foil covering body.
- the cover body 38 can be formed, for example, by a glass body, a metal foil or a sealed plastic foil covering body.
- Edge regions of the organic organic light emitting device 10 is disposed on the encapsulation layer 24 and the active region.
- the covering body 38 may, for example, have a refractive index (for example, at a wavelength of 633 nm) of 1.55.
- the third organic emitter has a central one
- the ligand has five ligand units LEI, LE2, LE3, LE4 and LE5. At the
- Emitting light takes place at the third organic
- Singlet-triplet splitting small means that the singlet-triplet splitting is, for example, in a range between 0.05 eV and 0.3 eV, for example between 0.1 eV and 0.2 eV, for example approximately 0.25 eV.
- the third organic emitter is, for example, one
- Transition metal complex with a central metal ion of the third transition metal period as an emitter.
- the strong spin-orbit coupling induced by the central metal ion leads to a relaxation of the transition from a singlet state to a triplet state.
- the third organic emitter is a deep red
- the actual triplet emission of the third organic emitter extends over the long-wave, deep red spectral range, in order here enough low-energy emission intensity for a good
- the third organic emitter has, for example, platinum as the central metal ion. At least one of
- Emitters can have one aromatic ring and at least one Group FGl1 FG2, FG3, FG4, FG5 have.
- the groups FG 1 , FG 2 , FG 3 , FG 4 , FG 5 can be attached to any position of the respective
- the respective aromatic ring may have one or more of the groups FGi, FG 2 , FG 3 , FG 4 , FG 5 .
- Each of the groups FG 1 , FG 2 , FG 3 , FG 4 , FG 5 may be, for example, an alkyl group, an aromatic group or a halogen group.
- Suitable alkyl groups include, but are not limited to, methyl, ethyl, propyl, butyl, isopropyl, and tert-butyl.
- Suitable aromatic radicals include, but are not limited to, methyl, ethyl, propyl, butyl, isopropyl, and tert-butyl.
- Groups include, but are not limited to, phenyl, pyridine, pyrrole, thienyl, mono-, di-, tri- or tetra-azole, mono-, di-tri- or tetra-azine and oxazole.
- Halogen group includes, for example, fluorine, chlorine, bromine and iodine.
- the ligand units LEI to LE5 may contain an aromatic, an alkyl, -CO-R ', -CS-R', -NO 2 , -N (alkyl) 3 ,
- N ⁇ aromatic) 3 -NH 3 + , -CN, -halogen, -C (halogen) 3 , -NH-alkyl, -NH-aromatic, -NHCO-alkyl, -NHCO-aromatic, -OCO-alkyl, OCO aromatic, -N (alkyl) 2 , -N (aromatic) 2 ,.
- the third organic emitter is a
- Me is a transition metal, preferably selected from
- each group FG 1 to FG 5 is independently selected from the group consisting of linear or branched C 1 -C 12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14
- each two adjacent groups FG 1 , FG 2 , FG 3 , FG 4 , FG 5 together with the carbon atoms to which they are attached form a substituted or unsubstituted cyclic group selected from the group consisting of C 3 -C 8 cycloalkyl , C6-C14 aryl, 5-14 membered heteroaryl, wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, 5-14 membered heteroalicyclyl, wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, wherein if Group is substituted, the / the group consisting of C 3 -C 8 cycloalkyl , C6-C14 aryl, 5-14 membered heteroaryl, wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, 5-14 membered heteroalicyclyl, wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, wherein if Group is substituted, the / the group consisting of
- Substituent (s) is / are selected from linear or branched C 1-12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14 aryl, 5-14 membered heteroaryl, in which 1 to 4 ring atoms are independent Nitrogen, oxygen or sulfur are 5-14 membered heteroalicyclyl wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, alkylaryl, arylalkyl, heteroarylalkyl and
- each R, R 'and R " is independently selected from the group consisting of hydrogen, linear or branched Gl -12 alkyl, C2-C12 alkenyl, C2-C12 alkynyl, C3-C8 cycloalkyl, C6-C14 aryl, 5-14 membered Heteroaryl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, 5-14 membered heteroalicyclyl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, alkylaryl, arylalkyl, heteroarylalkyl and
- M is an integer of 0 to 5;
- each "n” is an integer from 0 to 3
- each "o" is an integer from 0 to 4.
- FIG. 5 shows an exemplary embodiment of the third organic emitter of the organic light-emitting component 10, wherein the third emitter can be a compound of the formula II.
- the third organic emitter has a central one
- the ligand has, for example, three ligand units LE6, LE7 and LE8.
- the third organic emitter undergoes a charge transfer from one of the ligand units LE6, LE7 or LE8 to another of the ligand units LE6, LE7 or LE8.
- the singlet-triplet splitting is small. That the singlet-triplet splitting is small means that the singlet-triplet splitting is for example in a range between 0.05 eV and 0.3 eV, for example between 0.1 e and 0.2 eV, for example at approximately 0 , 25 eV.
- the third organic emitter is a deep red
- additional high energy emission band representing thermally activated singlet emission and closing the first spectral gap LI between the conventional green emitting emitter and the conventional red emitter emitter.
- the actual triplet emission of the third organic emitter extends over the long-wave, deep red spectral range, in order here enough low-energy emission intensity for a good
- the third organic emitter has, for example, platinum as the central metal ion. At least one of
- Ligand units LE6, LE7 or LE8 of the third organic emitter may have an aromatic ring and at least one group FE 6 , FE 7 , FE 8 .
- Groups FE 6; FE 7 , FE 8 can be attached to any position of the aromatic ring as well as to several positions.
- the groups FGi, FG 2 , FG 3 , FG, FG 5 can be assigned to each position of the respective
- Each aromatic ring may have one or more of the groups FG 1 FG 2 , FG 3 , FG 4 , FG 5
- Each of the groups FG X , FG 2 , FG 3 , FG 4 , FG 5 may be, for example, an alkyl group, an aromatic group or a halogen group.
- Suitable alkyl groups include, but are not limited to, methyl, ethyl, propyl, butyl, isopropyl, and tert-butyl.
- Suitable aromatic radicals include, but are not limited to, methyl, ethyl, propyl, butyl, isopropyl, and tert-butyl.
- Groups include, but are not limited to, phenyl, pyridine, pyrrole, thienyl, mono-, di-, tri- or tetra-azole, mono-, di-tri- or tetra-azine and oxazole.
- Halogen group includes, for example, fluorine, chlorine, bromine and iodine.
- the ligand units LE6, LE7 or LE8 may contain an aromatic, an alkyl, -CO-R ', -CS-R', -NO 2 , -N (alkyl) 3 , N (aromatic) 3 , -NH 3 + , -CN, -halogen, -C (halogen) 3 , -NH-alkyl, - NH-aromatic, -NHCO-alkyl, -NHCO-aromatic, -OCO-alkyl, -OCO- Aromatic, -N (alkyl), -N (aromatic) ' 2 , -NH 2 , -OH, -OR', -SCO-alkyl, -SCO-aromatic, -OCS-R ', -SH, -SO 3 H , or -SR ', where R' may be hydrogen, alky
- the third organic emitter is a compound of formula (II) (see also Figure 5);
- Me a transition metal preferably selected from the
- X is C - FG 6 , CH or N;
- each group FG 6 , FG 7 , FG 8 is independently selected from the group consisting of linear or branched C 1 -C 12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14
- Cycloalkyl C6-C14 aryl, 5-14 membered heteroaryl, in which 1 to 4 ring atoms independently nitrogen, oxygen or
- Sulfur are 5-14 membered heteroalicyclyl in which 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, where, if the group is substituted, the one or more
- Substituent (s) is / are selected from linear or branched C 1-12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14 aryl, 5-14 membered heteroaryl, in which 1 to 4 ring atoms are independent Nitrogen, oxygen or sulfur are 5-14 membered heteroalicyclyl wherein 1 to 4 ring atoms are independently nitrogen, oxygen or sulfur, alkylaryl, arylalkyl, heteroarylalkyl and
- each R, R 'and R " is independently selected from the group consisting of hydrogen, linear or branched C 1-12 alkyl, C 2 -C 12 alkenyl, C 2 -C 12 alkynyl, C 3 -C 8 cycloalkyl, C 6 -C 14 aryl, 5-14 membered Heteroaryl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, 5-14 membered heteroalicyclyl, in which 1 to 4
- Ring atoms are independently nitrogen, oxygen or sulfur, alkylaryl, arylalkyl, heteroarylalkyl and
- P is an integer from 0 to 3
- each q is independently an integer from 0 to 4.
- the compounds of the formula (I), (Ia) and (II) are unsubstituted, ie m, n, o, p and q are 0, ie the corresponding positions of the aromatic rings have hydrogen atoms, or substituted symmetrically in such a way
- the compound of the formula (I) or (Ia) carries two identical FGi in each case in ortho or meta position to the N bond and / or the compound of the formula (I) or (Ia) in each case one, two or more FG 2 and FG 5 , wherein the respective FG 2 and FG 5 substituents are identical at corresponding positions of the respective ring structure
- each case carries one, two or more FG 3 and FG 4 , wherein the respective FG 3 and FG substituents are identical at corresponding positions of the respective ring structure or the compound of the Formula (II) carries two identical FGs 6 each in ortho or meta position to the nearest bond and / or the
- Compound of formula (II) each carries one, two or more FG 7 and FG 8 , wherein the respective FG 7 and FG 8 substituents are identical at corresponding positions of the respective ring structure.
- all FG 2 and all FG 5 are hydrogen.
- C6-14 aryl is selected from: phenyl and naphthyl.
- heteroaryl is selected from: 2-
- m is 1, 2 or 3 and FGi is selected from the group consisting of methyl, ethyl, t-butyl, methoxy, N-carbazolyl, N, N-diphenylamine.
- FGi is N-carbazolyl or N, N-diphenylamine
- m is preferably 1 and FG X is in the para position.
- FG X is methyl
- FGi t-butyl
- m is preferably 2 and the two t-butyl radicals are preferably in the meta position.
- FGi ethyl
- m is preferably 1 and FG X is preferably in the para position.
- FGi is methoxy
- m is preferably 1 and the balance is preferably in the ortho position.
- each "o" is 1 and FG 3 and FG 4 are identical and are selected from the group consisting of methyl and t-butyl 3 and FG 4 are methyl, these are preferably in the 3 or 4 position (meta or para position relative to the coordinating nitrogen or carbon atom.) When FG 3 and FG 4 are t-butyl, they are preferably in the 4 position (para position relative to the coordinating nitrogen or carbon atom).
- each "q" is 1 or 2 and FG 7 and FG 8 are identical
- FG 7 and FG 8 are selected from the group consisting of hydrogen, methyl, t-butyl , Ethenyl, ethynyl, phenyl, 2-tetrahydrothiophenyl,
- the radicals are t-butyl, ethenyl, phenyl, 2-tetrahydrothiophenyl, fluoro, iodo, N-morpholinyl, 2-furanyl, 2-pyridinyl, 2-benzothiophenyl, methoxy, phenoxy, benzyloxy, 2-pyridininyloxy, acetoxy , Benzoates, thiomethyl,
- q 1
- the radicals are formyl, acetyl, acyl,
- Cyclohexylcarboxyl, phenylcarboxyl, benzylcarboxyl, -C (O) -NH-methyl, -C (S) - (methyl) 2 (cyano, nitro and bromo, each preferably in the meta position relative to the coordinating oxygen
- Radicals ethynyl, thiophenyl, -NH-C (O) -benzyl and chloro are each preferably in the ortho position relative to the coordinating oxygen.
- the Me, t-butyl and ethoxy radicals are ortho and para relative to the coordinating oxygen or the fluoro radicals are in the meta position relative to the coordinating oxygen.
- two FG 7 and two FG a respectively form together a phenyl, 1, 4 -Dioxan- or 1, 3 -dioxolan-ring.
- the two FGs 7 and both FGs 8 are in the 3 and 4 positions or the 4 and 5 positions.
- organic emitters selected from those used in the
- Fig. 6 shows a detailed sectional view of a
- the organic light-emitting component 10 may have the first emitter layer 42.
- the organic light-emitting device 10 may have a second
- Emitter layer 44 have.
- the organic light emitting device 10 has the first, second and third organic emitters as described above.
- the organic light emitting device 10 optionally has between the first emitter layer 42 and the second
- the Emitter layer 44 a first intermediate layer 48 on.
- the first intermediate layer 48 may be formed as an intermediate electrode or as a carrier generation layer (CGL).
- the intermediate electrode can be connected to an external
- Voltage source may provide, for example, a third electrical potential at the intermediate electrode.
- Intermediate electrode can, however, also no external having electrical connection, for example by the intermediate electrode has a floating electrical potential.
- the first emitter layer 42 has the first organic emitter and the second emitter layer 44 has the second organic emitter and the third
- the first emitter layer 42 has the first organic emitter and the second organic emitter, and the second emitter layer 44 has the third organic emitter.
- the first emitter layer 42 has the first organic emitter and the third organic emitter, and the second emitter layer 44 has the second organic emitter
- the first emitter layer 42 may be formed above or below the second emitter layer 44.
- the emitter layer 42, 4 which has the emitter in the green and the emitter in the red, can be used as a yellow unit
- the blue unit is placed in the optical cavity in the first maximum for blue and the yellow units is placed in the second maximum cavity.
- the first intermediate layer 48 can be dispensed with and the first emitter layer 42 can directly adjoin the second emitter layer 44.
- Fig. 7 shows a detailed sectional view of a
- the organic light-emitting device 10 may include the first emitter layer 42 and the second emitter layer 44 as described above, and particularly the first, second, and third organic emitters, such as described above.
- the first emitter layer 42 and the second emitter layer 44 as described above, and particularly the first, second, and third organic emitters, such as described above.
- Emitter layer 42 may be above or below the second
- Emitter layer 44 may be arranged. Furthermore, a third emitter layer 49 is formed. The third
- Emitter layer 49 may be formed over, under, or between the first and second emitter layers 42, 44.
- the third emitter layer 49 may be the first, the second
- the organic light-emitting device 10 may optionally be between the first emitter layer 42 and the second
- the first intermediate layer 48 may be formed as an intermediate electrode or carrier generation layer structure (CGL).
- CGL carrier generation layer structure
- Emitter layer 44 and the third emitter layer 49 have a second intermediate layer, not shown.
- the second intermediate layer can be used as an intermediate electrode or
- Charge generating layer structure may be formed.
- the green emitting second organic emitter in one of
- Emitter layers 42, 44, 49 may be arranged.
- the third organic emitter emitting in the red can be arranged in another one of the emitter layers 42, 44, 49.
- Blue emitting first organic emitter may be disposed in another of the emitter layers 42, 44, 49.
- Figs. 8A and 8B show embodiments of third organic emitters, each in one of
- FIGS. 9A, 9B, 9C, 9D, 9E, 9F show embodiments of third organic emitters, each of which may be arranged in one of the emitter layers 42, 44, 49 of one of the organic light emitting devices 10 explained above.
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Abstract
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| Application Number | Priority Date | Filing Date | Title |
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| US15/030,877 US20160268535A1 (en) | 2013-10-21 | 2014-10-15 | Organic light-emitting component |
| DE112014004819.4T DE112014004819A5 (de) | 2013-10-21 | 2014-10-15 | Organisches lichtemittierendes Bauelement |
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| DE201310111552 DE102013111552A1 (de) | 2013-10-21 | 2013-10-21 | Organisches lichtemittierendes Bauelement |
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| Publication Number | Publication Date |
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| WO2015059015A1 true WO2015059015A1 (de) | 2015-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2014/072159 Ceased WO2015059015A1 (de) | 2013-10-21 | 2014-10-15 | Organisches lichtemittierendes bauelement |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20160268535A1 (de) |
| DE (2) | DE102013111552A1 (de) |
| WO (1) | WO2015059015A1 (de) |
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|---|---|---|---|---|
| KR102379123B1 (ko) | 2015-08-27 | 2022-03-24 | 엘지디스플레이 주식회사 | 유기발광 표시장치 및 이를 적용한 차량용 조명장치 |
| KR102874456B1 (ko) | 2017-02-23 | 2025-10-20 | 삼성전자주식회사 | 유기금속 화합물, 이를 포함한 유기 발광 소자 및 이를 포함한 진단용 조성물 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005112520A1 (ja) | 2004-05-18 | 2005-11-24 | Nippon Hoso Kyokai | 発光素子 |
| US20100140602A1 (en) * | 2008-12-09 | 2010-06-10 | Fujifilm Corporation | Organic electroluminescence device |
| CN102982742A (zh) * | 2012-11-26 | 2013-03-20 | 李崇 | 多组分oled发光器件技术结合滤光技术制作的全色oled显示器 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5693962A (en) * | 1995-03-22 | 1997-12-02 | Motorola | Full color organic light emitting diode array |
| US20040012025A1 (en) * | 2002-07-22 | 2004-01-22 | Hoi-Sing Kwok | Anode for organic light emitting diodes |
| JP2004331508A (ja) * | 2003-04-30 | 2004-11-25 | Takasago Internatl Corp | 白金錯体 |
| JP2004335122A (ja) * | 2003-04-30 | 2004-11-25 | Takasago Internatl Corp | 発光素子 |
| JP2006032315A (ja) * | 2004-06-14 | 2006-02-02 | Seiko Epson Corp | 発光装置、電子機器、投射型表示装置、ラインヘッドおよび画像形成装置 |
| JP4531509B2 (ja) * | 2004-09-27 | 2010-08-25 | 富士フイルム株式会社 | 発光素子 |
| US20060134461A1 (en) * | 2004-12-17 | 2006-06-22 | Shouquan Huo | Organometallic materials and electroluminescent devices |
| DE102006062067A1 (de) * | 2006-12-29 | 2008-07-03 | Osram Opto Semiconductors Gmbh | Leuchtdiodenchip |
| KR101584990B1 (ko) * | 2008-12-01 | 2016-01-13 | 엘지디스플레이 주식회사 | 백색 유기 발광 소자 및 이의 제조 방법 |
| DE102010031831A1 (de) * | 2010-07-20 | 2012-01-26 | Cynora Gmbh | Singulett-Harvesting mit löslichen Kupfer(I)-Komplexen für opto-elektronische Vorrichtungen |
| TWI484680B (zh) * | 2010-07-27 | 2015-05-11 | Nat Univ Tsing Hua | 有機發光二極體之製作方法 |
| DE102011080240A1 (de) * | 2011-08-02 | 2013-02-07 | Cynora Gmbh | Singulett-Harvesting mit zweikernigen Kupfer(I)-Komplexen für opto-elektronische Vorrichtungen |
| KR101358784B1 (ko) * | 2012-02-14 | 2014-02-10 | 삼성디스플레이 주식회사 | 개선된 효율 특성을 갖는 유기 발광 소자 및 이를 포함하는 유기 발광 표시 장치 |
| DE102012204327A1 (de) * | 2012-03-19 | 2013-09-19 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement und Verfahren zum Herstellen eines optoelektronischen Bauelements |
-
2013
- 2013-10-21 DE DE201310111552 patent/DE102013111552A1/de not_active Withdrawn
-
2014
- 2014-10-15 WO PCT/EP2014/072159 patent/WO2015059015A1/de not_active Ceased
- 2014-10-15 US US15/030,877 patent/US20160268535A1/en not_active Abandoned
- 2014-10-15 DE DE112014004819.4T patent/DE112014004819A5/de active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005112520A1 (ja) | 2004-05-18 | 2005-11-24 | Nippon Hoso Kyokai | 発光素子 |
| JP5008974B2 (ja) * | 2004-05-18 | 2012-08-22 | 日本放送協会 | 発光素子 |
| US20100140602A1 (en) * | 2008-12-09 | 2010-06-10 | Fujifilm Corporation | Organic electroluminescence device |
| CN102982742A (zh) * | 2012-11-26 | 2013-03-20 | 李崇 | 多组分oled发光器件技术结合滤光技术制作的全色oled显示器 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013111552A1 (de) | 2015-04-23 |
| US20160268535A1 (en) | 2016-09-15 |
| DE112014004819A5 (de) | 2016-07-21 |
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