Display device

Patent metadata

Field	Value
Publication number	US-11450837-B2
Application number	US-202016909196-A
Country	US
Kind code	B2
Filing date	Jun 23, 2020
Priority date	Sep 23, 2019
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A display device includes: a substrate including a display area, a first non-display area, a second non-display area, and a bending area; a display element disposed on a surface of the substrate; a resin layer disposed on another surface of the substrate to correspond to the display area, where the resin layer exposes at least a portion of the another surface; an external light-absorbing layer disposed on the another surface exposed by the resin layer; and a first protective layer disposed on the another surface of the substrate to correspond to the first non-display area.

First claim

What is claimed is:

1. A display device comprising:
a substrate including a display area, a first non-display area, a second non-display area, and a bending area, wherein the first non-display area neighbors the display area, and the bending area is disposed between the first non-display area and the second non-display area;
a display element disposed on a surface of the substrate to correspond to the display area;
a resin layer disposed on another surface of the substrate to correspond to the display area, wherein the resin layer exposes at least a portion of the another surface, and the another surface is opposite the surface;
an external light-absorbing layer disposed on a portion of the another surface exposed by the resin layer; and
a first protective layer disposed on the another surface of the substrate to correspond to the first non-display area.

2. The display device of claim 1 , wherein
the resin layer has a first transmittance, and
the external light-absorbing layer has a second transmittance less than the first transmittance.

3. The display device of claim 2 , wherein
the first transmittance is in a range of about 50% to about 99%, and
the second transmittance is in a range of about 3% to about 30%.

4. The display device of claim 1 , further comprising:
an embossed layer disposed on the another surface of the substrate with the resin layer therebetween; and
an impact-alleviating layer disposed on the another surface of the substrate with the embossed layer therebetween.

5. The display device of claim 4 , wherein
a first opening corresponding to the external light-absorbing layer is defined through the embossed layer, and
a second opening corresponding to the external light-absorbing layer is defined through the impact-alleviating layer.

6. The display device of claim 5 , further comprising:
a sensor module disposed on the another surface of the substrate with the external light-absorbing layer therebetween, wherein the sensor module is disposed to correspond to the external light-absorbing layer; and
a first adhesive layer disposed between the external light-absorbing layer and the sensor module.

7. The display device of claim 6 , wherein the sensor module is disposed on the another surface of the substrate to correspond to the first opening and the second opening.

8. The display device of claim 7 , further comprising:
a metal pattern disposed on the surface of the substrate to correspond to the first non-display area, wherein the metal pattern allows the sensor module to be disposed at a location corresponding to the first opening and the second opening.

9. The display device of claim 1 , wherein a composition of the external light-absorbing layer includes about 5 wt % to about 10 wt % of a binder polymer, about 1 wt % to about 3 wt % of a photoinitiator, about 1 wt % to about 5 wt % of a carbon black, about 1 wt % to about 5 wt % of a pigment dispersion agent, about 0.01 wt % to about 1 wt % of an additive, and about 70 wt % to about 85 wt % of a solvent.

10. The display device of claim 9 , wherein the binder polymer has an average molecular weight in a range of about 3000 to about 10000 and is manufactured by radical-polymerizing a monomer.

11. The display device of claim 10 , wherein
the composition of the external light-absorbing layer further includes about 5 wt % to about 10 wt % of a heat initiator, wherein the heat initiator includes 2, 4-dimethylvaleronitrile.

12. The display device of claim 9 , wherein the photoinitiator includes at least one material selected from phenyl bis(2,4,6-trimethyl benzoyl) phosphine oxide, diphenyl(2,4,6-trimethylbenzoyl) phosphine oxide, 2-Hydroxy-2-methyl-1-phenyl-1-propanone, and Bis(eta 5-2,4-cyclopentadien-1-yl) Bis(2,6-difluoro-3-(1H-pyrrol-1-yl)-phenyl) titanium.

13. The display device of claim 9 , wherein the pigment dispersion agent includes at least one material selected from BYK-200, BYK-2001, BYK-161, BYK-163, BYK-160, PD-7000, DFKA-4330, and Disper-650.

14. The display device of claim 9 , wherein the solvent includes at least one material selected from propylene glycol monomethyl ether acetate, ethyl ethoxy propionate, cyclohexanone, dipropylene glycol monomethyl ether acetate, n-butyl acetate, isobutyl acetate, ethylene glycol monomethyl acetate, ethylene glycol n-butyl acetate, diethylene glycol dimethyl ether, and dipropylene glycol monomethyl acetate.

15. A display device comprising:
a substrate including a display area, a first non-display area, a second non-display area, and a bending area, wherein the first non-display area neighbors the display area, and the bending area is disposed between the first non-display area and the second non-display area;
a display element disposed on a surface of the substrate to correspond to the display area;
an external light-absorbing layer disposed on another surface of the substrate to correspond to the display area, wherein the another surface is opposite the surface; and
a metal pattern disposed on the surface of the substrate to correspond to the first non-display area.

16. The display device of claim 15 , further comprising:
a first protective layer disposed on the another surface of the substrate to correspond to the first non-display area.

17. The display device of claim 16 , wherein
the first protective layer has a first transmittance, and
the external light-absorbing layer has a second transmittance less than the first transmittance.

18. The display device of claim 17 , wherein
the first transmittance is in a range of about 50% to about 99%, and
the second transmittance is in a range of about 3% to about 30%.

19. The display device of claim 15 , further comprising:
an impact-alleviating layer disposed on the another surface of the substrate with the external light-absorbing layer therebetween, wherein the impact-alleviating layer exposes at least a portion of the another surface, and an opening corresponding to the external light-absorbing layer is defined through the impact-alleviating layer; and
a sensor module disposed on the another surface of the substrate with the external light-absorbing layer therebetween, wherein the sensor module is disposed to correspond to the external light-absorbing layer.

20. The display device of claim 19 , wherein the sensor module is disposed on the another surface of the substrate to correspond to the opening.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Ungsoo
• Kwon Seungwook
• Lee Kibeom
• Kim Sooyoun
• Sung Wooyong
• Lee Seoyeon
• Lee Hyoungsub
• Chang Moonwon

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/87 Primary

  Passivation; Containers; Encapsulations · CPC title

• H10K59/8792 Primary

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title