ORGANIC MULTICOLOR LIGHT-EMITTING APPARATUS

• US 20160276602A1
• Filed: 11/08/2013
• Published: 09/22/2016
• Est. Priority Date: 11/15/2012
• Status: Active Grant

• Current Assignee: Idemitsu Kosan Company Limited, JOLED Inc.
• Original Assignee: Idemitsu Kosan Company Limited, Sony Corporation (Sony Group Corp.)
• Inventors: YOSHINAGA, Tadahiko, EIDA, Mitsuru, KAWAKAMI, Hironori
• Granted Patent: US 9,647,220 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: C07D 487/04 Ortho-condensed systems
• CPC Class Codes: C07D 491/048 the oxygen-containing ring being five-membered
• CPC Class Codes: C07D 493/04 Ortho-condensed systems
• CPC Class Codes: C09K 11/06 containing organic luminescent materials
• CPC Class Codes: C09K 2211/1007 Non-condensed systems
• CPC Class Codes: C09K 2211/1029 containing one nitrogen atom as the heteroatom
• CPC Class Codes: C09K 2211/185 of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
• CPC Class Codes: H10K 2101/10 Triplet emission
• CPC Class Codes: H10K 2102/351 Thickness
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/13 comprising stacked EL layers within one EL unit
• CPC Class Codes: H10K 50/15 Hole transporting layers
• CPC Class Codes: H10K 50/16 Electron transporting layers
• CPC Class Codes: H10K 50/17 Carrier injection layers
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 85/342 comprising iridium
• CPC Class Codes: H10K 85/615 Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
• CPC Class Codes: H10K 85/622 containing four rings, e.g. pyrene
• CPC Class Codes: H10K 85/626 containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
• CPC Class Codes: H10K 85/631 Amine compounds having at least two aryl rest on at least one amine-nitrogen atom, e.g. triphenylamine
• CPC Class Codes: H10K 85/633 : comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/636 : comprising heteroaromatic hydrocarbons as substituents on the nitrogen atom
• CPC Class Codes: H10K 85/654 : comprising only nitrogen as heteroatom H10K85/652 takes precedence
• CPC Class Codes: H10K 85/657 : Polycyclic condensed heteroaromatic hydrocarbons
• CPC Class Codes: H10K 85/6572 : comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
• CPC Class Codes: H10K 85/6574 : comprising only oxygen in the heteroaromatic polycondensed ring system, e.g. cumarine dyes
• CPC Class Codes: H10K 85/6576 : comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene

Abstract

An organic electroluminescence multicolor light-emitting apparatus including:

a substrate; and a first light-emitting device and a second light-emitting device being arranged in parallel relative to the surface of the substrate; wherein the first light-emitting device includes, between an anode and a cathode, a first organic layer, a second organic layer and a third organic layer in this sequence from the anode side in a direction perpendicular to the surface of the substrate,
the second light-emitting device includes, between an anode and a cathode, a second organic layer and a third organic layer in this sequence from the anode side in a direction perpendicular to the surface of the substrate, the first organic layer includes a first emitting dopant, the third organic layer includes a second emitting dopant, and the second organic layers independently comprise any one of compounds represented by the following formulas (1) to (6).

Claims

1. An organic electroluminescence multicolor light-emitting apparatus comprising:

a substrate; and

a first light-emitting device and a second light-emitting device being arranged in parallel on the surface of the substrate;

wherein the first light-emitting device comprises, between an anode and a cathode, a first organic layer, a second organic layer and a third organic layer in this sequence from the anode side in a direction perpendicular to the surface of the substrate,

the second light-emitting device comprises, between an anode and a cathode, a second organic layer and a third organic layer in this sequence from the anode side in a direction perpendicular to the surface of the substrate,

the first organic layer comprises a first emitting dopant,

the third organic layers comprise a second emitting dopant, and

the second organic layers independently comprise any one of compounds represented by the following formulas (1) to (6);

2. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein m of the compound represented by the formulas (1) to (6) is 1 and Y¹ and Y² are a single bond.

3. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the compound represented by the formula (1) or (2) is a compound represented by the following formulas (7) to (12):

4. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the compound represented by the formula (3) or (4) is a compound represented by the following formulas (13) to (18):

5. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the compound represented by the formula (5) or (6) is a compound represented by the following formulas (19) to (24):

6. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein X¹ or X² is an element or a group selected from oxygen (O), sulfur (S) and >

N—

R¹ (wherein R¹ is the same as R¹ in the formulas (1) to (6)).

7. The organic electroluminescence multicolor light-emitting apparatus according to claim 6, wherein X¹ or X² is oxygen (O).

8. The organic electroluminescence multicolor light-emitting apparatus according to claim 6, wherein R¹ in the >

N—

R¹ is a group including a fused aromatic hydrocarbon skeleton including 10 to 30 ring carbon atoms or a group including an aromatic heterocyclic skeleton including 9 to 30 ring atoms.

9. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein X³ is nitrogen (N).

10. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein p and q are 2.

11. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein m is 0, and at least one of A¹ and A² in the formula (1) or (2) is a group including a fused aromatic hydrocarbon skeleton including 10 to 30 ring carbon atoms or a group including an aromatic heterocyclic skeleton including 9 to 30 ring atoms.

12. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein m is 0 and L⁴ in the formula (5) or (6) is a group including a fused aromatic hydrocarbon skeleton including 10 to 30 ring carbon atoms or a group including an aromatic heterocyclic skeleton including 9 to 30 ring atoms.

13. The organic electroluminescence multicolor light-emitting apparatus according to claim 11, wherein Y¹ and Y² are a single bond.

14. The organic electroluminescence multicolor light-emitting apparatus according to claim 11, wherein the compound represented by the formulas (1) to (6) is a compound represented by the following formulas (25) to (27):

15. The organic electroluminescence multicolor light-emitting apparatus according to claim 14, wherein X¹ in the formulas (25) and (26) is oxygen (O) or sulfur (S)

16. The organic electroluminescence multicolor light-emitting apparatus according to claim 14, wherein X³ in the formula (27) is nitrogen (N) and L⁴ is selected from a group including a fused aromatic hydrocarbon skeleton including 14 to 30 ring carbon atoms.

17. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein at least one of A¹ and A² as well as R¹ are a group selected from a naphthyl group, an anthracenyl group, a phenanthrenyl group, a naphthacenyl group, a benzophenanthrenyl group, a dibenzophenanthrenyl group, a chrysenyl group, a benzochrysenyl group, dibenzochrysenyl group, a fluoranthenyl group, a benzofluoranthenyl group, a triphenylenyl group, a benzotriphenylenyl group, a dibenzotriphenylenyl group, a picenyl group, a benzopicenyl group, a dibenzopicenyl group, a fluorenyl group, a 9,9-dimethylfluorenyl group, a 9,9-diphenylfluorenyl group and a 9,9-spirobifluorenyl group.

18. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein L⁴ is a group selected from a q-valent residue of naphthalene, anthracene, phenanthrene, naphthacene, benzophenanthrene, dibenzophenanthrene, chrysene, benzochrysene, dibenzochrysene, fluoranthene, benzofluoranthene, triphenylene, benzotriphenylene, dibenzotriphenylene, picene, benzopicene, dibenzopicene, 9,9-diphenylfluorene and 9, 9-spirobifluorene.

19. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the second organic layer further comprises a hole-transporting material.

20. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the second organic layer is formed of at least a layer comprising the compound represented by the formulas (1) to (6) and a layer comprising a hole-transporting material.

21. The organic electroluminescence multicolor light-emitting apparatus according to claim 19, wherein the hole-transporting material comprises an amine skeleton or a carbazole skeleton.

22. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the second organic layer of the first light-emitting device and the second organic layer of the second light-emitting device comprise the same compound.

23. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the film thickness of the second organic layer of the first light-emitting device and the film thickness of the second organic layer of the second light-emitting device are the same.

24. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the first organic layer is a red, yellow or green phosphorescent emitting layer and the third organic layer is a blue fluorescent emitting layer.

25. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, wherein the first organic layer is a layer formed by a coating method and the third organic layer is a layer formed by a deposition method.

26. The organic electroluminescence multicolor light-emitting apparatus according to claim 1, comprising a hole-injecting and transporting layer formed by a coating method on the anode side of the second organic layer of the second light-emitting device.