Organic electroluminescent element, material for said element, and light-emitting device, display device, and illumination device using said element

Patent metadata

Field	Value
Publication number	US-9397303-B2
Application number	US-201214238363-A
Country	US
Kind code	B2
Filing date	Aug 6, 2012
Priority date	Aug 18, 2011
Publication date	Jul 19, 2016
Grant date	Jul 19, 2016

Abstract

An organic electroluminescent element using a compound represented by the general formulae (I)-(IV), as disclosed herein, emits dark blue light and exhibits good chromaticity at a wide range of concentrations of light emitting materials.

First claim

The invention claimed is:

1. An organic electroluminescent element comprising:
a substrate;
a pair of electrodes including an anode and a cathode, disposed on the substrate; and
at least one organic layer including a light emitting layer, disposed between the electrodes,
wherein at least one kind of compound represented by any one of the following General Formulae (I) to (IV) is contained in any layer of the at least one organic layer:

wherein R 1 to R 37 each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 1 to R 37 are not bonded to each other to form a ring; X 1 to X 32 each independently represents a linking group represented by any one of CR 61 R 62 , NR 63 , O, S, and SiR 64 R 65 ; R 61 to R 65 each independently represent a hydrogen atom or a substituent; A 1 to A 38 each independently represents CR 66 or N; R 66 represents a hydrogen atom or a substituent, and when two adjacent groups out of A 1 to A 38 are CR 66 , the two R 66 's may be bonded to each other to form a ring structure;
wherein when X 1 and X 2 are the same, X 1 and X 2 are not NR 63 or S; and
wherein when X 31 and X 32 are both NR 63 , at least one R 63 is not H.

2. The organic electroluminescent element according to claim 1 , wherein at least one kind of compound represented by the General Formula (I) or (II) is contained in any layer of the at least one organic layer.

3. The organic electroluminescent element according to claim 1 , wherein the molecular weight of the compound represented by any one of the General Formulae (I) to (IV) is 800 or less.

4. The organic electroluminescent element according to claim 1 , wherein the organic layer containing the compound represented by any one of the General Formulae (I) to (IV) is formed by a vacuum deposition process.

5. The organic electroluminescent element according to claim 1 , wherein the light emitting layer is formed by a wet process.

6. A light emitting device using the organic electroluminescent element according to claim 1 .

7. A display device using the organic electroluminescent element according to claim 1 .

8. An illumination device using the organic electroluminescent element according to claim 1 .

9. The organic electroluminescent element according to claim 1 , wherein at least one kind of compound represented by the General Formula (II) is contained in any layer of the at least one organic layer.

10. The organic electroluminescent element according to claim 9 , wherein the compound represented by the General Formula (II) is a compound represented by the following general formula (V):

wherein R 41 to R 47 each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 41 to R 47 are not bonded to each other to form a ring; R 48 to R 55 each independently represents a hydrogen atom or a substituent, and two adjacent groups out of R 48 to R 55 may be bonded to each other to form a ring; X 41 and X 42 each independently represent a linking group represented by any one of CR 61 R 62 , NR 63 , O, S, and SiR 64 R 65 ; R 61 to R 65 each independently represents a hydrogen atom or a substituent.

11. The organic electroluminescent element according to claim 10 , wherein in the General Formula (V), X 41 and X 42 each independently represent a linking group represented by any one of CR 61 R 62 , NR 63 , and O.

12. The organic electroluminescent element according to claim 10 , wherein in the General Formula (V), X 41 and X 42 are each independently represented by any one of CR 61 R 62 , NR 63 , and O, and X 41 and X 42 represent different linking groups.

13. The organic electroluminescent element according to claim 10 , wherein in the General Formula (V), at least one of R 41 to R 55 and R 61 to R 65 is a substituent having any of a fluorine atom, an alkyl group, a silyl group, and an amino group.

14. The organic electroluminescent element according to claim 1 , wherein at least one kind of compound represented by the General Formula (I) is contained in any layer of the at least one organic layer.

15. The organic electroluminescent element according to claim 14 , wherein the compound represented by the General Formula (I) is represented by the following General Formula (VI)

wherein R 71 to R 77 each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 71 to R 77 are not bonded to each other to form a ring; R 78 to R 85 each independently represents a hydrogen atom or a substituent, and two adjacent groups out of R 78 to R 85 may be bonded to each other to form a ring; X 51 and X 52 each independently represents a linking group represented by any one of CR 61 R 62 , NR 63 , O, S, and SiR 64 R 65 ; R 61 to R 65 each independently represents a hydrogen atom or a substituent;
wherein when X 51 and X 52 are the same, X 51 and X 52 are not NR 63 or S.

16. The organic electroluminescent element according to claim 15 , wherein in the General Formula (VI), X 51 and X 52 each independently represent a linking group represented by any one of CR 61 R 62 , NR 63 , and O.

17. The organic electroluminescent element according to claim 15 , wherein in the General Formula (VI), X 51 and X 52 are each independently represented by any one of CR 61 R 62 , NR 63 , and O, and X 51 and X 52 represent different linking groups.

18. The organic electroluminescent element according to claim 15 , wherein in the General Formula (VI), at least one of R 71 to R 85 and R 61 to R 65 is a substituent having any of a fluorine atom, an alkyl group, a silyl group, and an amino group.

19. The organic electroluminescent element according to claim 1 , wherein the compound represented by any one of the General Formulae (I) to (IV) is contained in the light emitting layer.

20. The organic electroluminescent element according to claim 19 , wherein the compound represented by any one of the General Formulae (I) to (IV) is a light emitting material contained in the light emitting layer.

21. The organic electroluminescent element according to claim 20 , further comprising a host material in the light emitting layer.

22. The organic electroluminescent element according to claim 21 , wherein the host material has a hydrocarbon fused ring structure having 10 to 50 carbon atoms.

23. The organic electroluminescent element according to claim 21 , wherein the host material has an anthracene skeleton.

24. A material for an organic electroluminescent element, which is a compound represented by the following General Formula (V′):

wherein R 41 to R 47 each independently represents a hydrogen atom or a substituent, but two adjacent groups out of R 41 to R 47 are not bonded to each other to form a ring; R 48 to R 55 each independently represents a hydrogen atom or a substituent, and two adjacent groups out of R 48 to R 55 may be bonded to each

Assignees

• Takada Saki
• Takaku Koji
• Kitamura Tetsu
• Ise Toshihiro
• Sotoyama Wataru
• Udc Ireland Ltd

Inventors

• Takada Saki
• Takaku Koji
• Kitamura Tetsu
• Ise Toshihiro
• Sotoyama Wataru

Classifications

• H01L51/0054

  Electricity · mapped topic

• H01L51/0061

  Electricity · mapped topic

• H01L51/0051

  Electricity · mapped topic

• H01L51/0073

  Electricity · mapped topic

• H01L51/0072

  Electricity · mapped topic