Display device

Patent metadata

Field	Value
Publication number	US-11515500-B2
Application number	US-202016907752-A
Country	US
Kind code	B2
Filing date	Jun 22, 2020
Priority date	Nov 12, 2019
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

A display device includes: a base substrate; a light emitting element on the base substrate; a thin film encapsulation layer on the light emitting element to encapsulate the light emitting element; a touch member on the thin film encapsulation layer; a color filter layer on the touch member; and a planarization layer on the color filter layer to cover the color filter layer, wherein the planarization layer includes a light absorber represented by Formula 1:

X—Ar—Y.  Formula 1

First claim

What is claimed is:

1. A display device, comprising:
a base substrate;
a light emitting element on the base substrate;
a thin film encapsulation layer on the light emitting element to encapsulate the light emitting element;
a touch member on the thin film encapsulation layer;
a color filter layer on the touch member; and
a planarization layer on the color filter layer to cover the color filter layer,
wherein the planarization layer comprises a light absorber represented by Formula 1:
X—Ar—Y,  Formula 1

wherein, in Formula 1,
Ar is pyrene, chrysene, or anthracene,
Y is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group, or is represented by any one of Structural Formulae:

and
X is represented by any one of Formulae 2-1 to 2-3:

2. The display device of claim 1 ,
wherein Formula 1 is represented by any one of Formulae 1-1 to 1-3:

3. The display device of claim 1 ,
wherein Formula 1 is represented by any one of Formulae 1-4 to 1-6:

4. The display device of claim 1 ,
wherein Formula 1 is represented by any one of Formulae 1-7 to 1-9:

5. The display device of claim 1 ,
wherein X is represented by Formula 2-1, and Y is represented by Formula 3:

and
wherein R is a substituted or unsubstituted alkyl group having 1 to 5 carbon atoms.

6. The display device of claim 1 ,
wherein the display device has an absorbance of 0.7 or more in a wavelength band of 380 nm to 410 nm.

7. The display device of claim 1 ,
wherein the light absorber represented by Formula 1 is any one selected from compounds represented by Compound Group 1:

8. The display device of claim 1 ,
wherein the light absorber is further in the color filter layer.

9. The display device of claim 8 ,
wherein the color filter layer is provided for each pixel,
the color filter layer comprises a plurality of color filters and the plurality of color filters are spaced apart from each other at a boundary between adjacent pixels, and
a light blocking layer is on the touch member at the boundary between adjacent pixels.

10. The display device of claim 1 ,
wherein the touch member comprises a first touch conductive layer, a first touch insulating layer on the first touch conductive layer, a second touch conductive layer on the first touch insulating layer, and a second touch insulating layer on the second touch conductive layer; and
the light absorber is further in the first touch insulating layer and/or the second touch insulating layer.

11. The display device of claim 10 ,
wherein the first touch conductive layer is directly on the thin film encapsulation layer.

12. A display device, comprising:
a base substrate;
a light emitting element on the base substrate;
a thin film encapsulation layer on the light emitting element to encapsulate the light emitting element;
a touch member on the thin film encapsulation layer;
a color filter layer on the touch member; and
a planarization layer on the color filter layer to cover the color filter layer,
wherein the planarization layer comprises a light absorber in a content of 3 wt % to 25 wt %.

13. The display device of claim 12 ,
wherein the light absorber is represented by Formula 1:
X—Ar—Y,  Formula 1

wherein, in Formula 1,
Ar is pyrene, chrysene, or anthracene,
Y is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted anthracenyl group, a substituted or unsubstituted phenanthrenyl group, a substituted or unsubstituted dibenzofuranyl group, or a substituted or unsubstituted dibenzothiophenyl group, or is represented by any one of Structural Formulae:

and
X is represented by any one of Formulae 2-1 to 2-3:

14. The display device of claim 12 ,
wherein the light absorber is further in the color filter layer.

15. The display device of claim 14 ,
wherein the color filter layer is provided for each pixel,
the color filter layer comprises a plurality of color filters and the plurality of color filters are spaced apart from each other at a boundary between adjacent pixels, and
a light blocking layer is on the touch member at the boundary between adjacent pixels.

16. The display device of claim 12 ,
wherein the touch member comprises a first touch conductive layer, a first touch insulating layer on the first touch conductive layer, a second touch conductive layer on the first touch insulating layer, and a second touch insulating layer on the second touch conductive layer; and
the light absorber is further in the first touch insulating layer and/or the second touch insulating layer.

17. A display device, comprising:
a base substrate;
a light emitting element on the base substrate;
a thin film encapsulation layer on the light emitting element to encapsulate the light emitting element;
a touch member on the thin film encapsulation layer; and
an optical member on the touch member,
wherein the touch member comprises a first touch conductive layer, a first touch insulating layer on the first touch conductive layer, a second touch conductive layer on the first touch insulating layer, and a second touch insulating layer on the second touch conductive layer,
a light absorber is in the first touch insulating layer and/or the second touch insulating layer, and
the light absorber is represented by Formula 1:
X—Ar—Y,  F

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Mi Hwa
• Kim Su Jeong
• KIM Yi Su
• Shim Yi Seop
• Lee Jin Hyeong
• Jeong Eun Jae

Classifications

• C07C49/83

  polycyclic · CPC title

• C07C69/54

  Acrylic acid esters; Methacrylic acid esters · CPC title

• C07C2603/48

  Chrysenes; Hydrogenated chrysenes · CPC title

• C07D333/76

  Dibenzothiophenes · CPC title

• C07C2603/26

  Phenanthrenes; Hydrogenated phenanthrenes · CPC title