Organic light emitting display device

Patent metadata

Field	Value
Publication number	US-11158808-B2
Application number	US-202016842486-A
Country	US
Kind code	B2
Filing date	Apr 7, 2020
Priority date	Dec 3, 2015
Publication date	Oct 26, 2021
Grant date	Oct 26, 2021

Abstract

An organic light emitting display device is provided. The organic light emitting display device may include at least one light emitting part between an anode and a cathode, and the at least one light emitting part having at least one organic layer and a light emitting layer, wherein the at least one organic layer comprises a compound represented by Chemical Formula 1 or 2.

First claim

The invention claimed is:

1. An organic light emitting display device, comprising:
at least one light emitting part between an anode and a cathode,
wherein the at least one light emitting part comprises at least one organic layer,
wherein the at least one organic layer comprises a first P-type charge generation layer,
wherein the first P-type charge generation layer comprises a compound represented by Chemical Formula 1:

where
R 1 to R 6 include independently one among hydrogen, a substituted or unsubstituted aryl group with 6 to 12 carbon atoms, a substituted or unsubstituted heteroaryl group with 1 to 12 carbon atoms and 1 to 4 heteroatoms one among O, N, S, and Si, a substituted or unsubstituted alkyl group with 1 to 12 carbon atoms, a substituted or unsubstituted alkoxy group with 1 to 12 carbon atoms, a substituted or unsubstituted ether group with 2 to 12 carbon atoms, a cyano group, a fluorine group, a trifluoromethyl group, a trifluoromethoxy group, and a trimethylsilyl group, and at least one of R 1 to R 6 comprises a cyano group, and
Z 1 and Z 2 are independently represented by the following Chemical Formula 2:

where A and B independently represent one among a hydrogen atom, a substituted or unsubstituted aryl group with 6 to 12 carbon atoms, a substituted or unsubstituted heteroaryl group with 1 to 12 carbon atoms and 1 to 4 heteroatoms one among O, N, S, and Si, a substituted or unsubstituted alkyl group with 1 to 12 carbon atoms, a substituted or unsubstituted alkoxy group with 1 to 12 carbon atoms, a substituted or unsubstituted ether group with 2 to 12 carbon atoms, a cyano group, a fluorine group, a trifluoromethyl group, a trifluoromethoxy group, and a trimethylsilyl group,
wherein Z 1 and Z 2 are attached via a double bond between a carbon atom bound to A and B of Chemical Formula 2 and the indacene ring of Chemical Formula 1.

2. The organic light emitting display device of claim 1 , wherein a substituent of the substituted aryl group, the substituted heteroaryl group, the substituted alkyl group, the substituted alkoxy group or the substituted ether group includes an alkyl with 2 to 12 carbon atoms, an aryl with 6 to 15 carbon atoms, a hetero alkyl with 1 to 15 carbon atoms and 1 to 4 heteroatoms one among O, N, S, and Si, a cyano group, a fluorine group, a trifluoromethyl group, a trifluoromethoxy group, or a trimethylsilyl group.

3. The organic light emitting display device of claim 1 , wherein the compound represented by Chemical Formula 1 is one among the following compounds:

4. The organic light emitting display device of claim 1 , wherein a dopant of the first P-type charge generation layer includes the compound represented by Chemical Formula 1.

5. The organic light emitting display device of claim 3 , wherein a dopant of the first P-type charge generation layer includes the compound represented by Chemical Formula 1.

6. The organic light emitting display device of claim 1 ,
wherein the at least one light emitting part includes a first light emitting part and a second light emitting part,
wherein the first light emitting part includes a first light emitting layer, and
wherein the second light emitting part includes a second light emitting layer.

7. The organic light emitting display device of claim 6 , wherein:
the first light emitting layer emits light of a color of at least one among red, green, and blue; and
the second light emitting layer emits light of a color of at least one among red, green, and blue.

8. The organic light emitting display device of claim 6 , wherein the first light emitting layer and the second light emitting layer emit light of the same color.

9. The organic light emitting display device of claim 6 , wherein the at least one organic layer includes a hole injection layer including the compound represented by Chemical Formula 1.

10. The organic light emitting display device of claim 3 , wherein the at least one organic layer includes a hole injection layer including the compound represented by Chemical Formula 1.

11. The organic light emitting display device of claim 6 , wherein:
the first light emitting layer includes a blue light emitting layer, a dark blue emitting layer, a sky blue emitting layer, a combination of a blue light emitting layer and a red light emitting layer, a combination of a blue light emitting layer and a yellow-green emitting layer, or a combination of a blue light emitting layer and a green emitting layer; and
the second light emitting layer includes a yellow-green emitting layer, a green emitting layer, a combination of a yellow-green emitting layer and a green emitting layer, a combination of a yellow emitting layer and a red emitting layer, a combination of a green emitting layer and a red emitting layer, or a combination of a yellow-green emitting layer and a red emitting layer.

12. The organic light emitting display device of claim 1 , wherein the at least one light emitting part includes a first light emitting part, a second light emitting part, and a third light emitting part, and
the first light emitting part includes a first light emitting layer, the second light emitting part includes a second light emitting layer, and the third light emitting part includes a third light emitting layer.

13. The organic light emitting display device of claim 12 , wherein:
the first light emitting layer includes a blue light emitting layer, a dark blue emitting layer, a sky blue emitting layer, a combination of a blue light emitting layer and a red light emitting layer, a combination of a blue light emitting layer and a yellow-green emitting layer, or a combination of a blue light emitting layer and a green emitting layer;
the second light emitting layer includes a yellow-green emitting layer, a green emitting layer, a combination of a yellow-green emitting layer and a green emitting layer, a combination of a yellow emitting layer and a red emitting layer, a combination of a green emitting layer and a red emitting layer, or a combinatio

Assignees

• Lg Display Co Ltd
• Lg Chemical Ltd

Inventors

• Kim Jungkeun
• Kim Dohan
• Seo Jeongdae
• Kim Hyoseok
• Choi Heungwoo
• Hong Wanpyo

Classifications

• H10K85/615

  Polycyclic condensed aromatic hydrocarbons, e.g. anthracene · CPC title

• C07D213/61 Primary

  Halogen atoms or nitro radicals · CPC title

• C09K2211/1029

  containing one nitrogen atom as the heteroatom · CPC title

• C07C255/47

  to carbon atoms of rings being part of condensed ring systems · CPC title

• C09K2211/1007

  Non-condensed systems · CPC title