Display device

Patent metadata

Field	Value
Publication number	US-9793512-B2
Application number	US-201615250613-A
Country	US
Kind code	B2
Filing date	Aug 29, 2016
Priority date	Mar 21, 2016
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

A display device includes a substrate including a bending area between a first region and a second region and configured to be bent at the bending area, a display portion above the substrate in the first region, a protective film below the substrate and including a protective film base and an adhesive layer, wherein the protective film base has an opening corresponding to the bending area or the protective film base corresponds to at least a portion of the first region, and wherein the adhesive layer is between the substrate and the protective film base and forms an integral body above the first region, the bending area, and the second region, and at least a portion of the adhesive layer that corresponds to the bending area has a hardness different from that of at least a portion of the adhesive layer corresponding to the first region.

First claim

What is claimed is:

1. A display device comprising:
a substrate comprising a bending area between a first region and a second region and configured to be bent at the bending area;
a display portion above the substrate in the first region;
a protective film below the substrate and comprising a protective film base and an adhesive layer,
wherein the protective film base has an opening corresponding to the bending area or the protective film base corresponds to at least a portion of the first region, and
wherein the adhesive layer is between the substrate and the protective film base and forms an integral body above the first region, the bending area, and the second region, and at least a portion of the adhesive layer that corresponds to the bending area has a hardness different from that of at least a portion of the adhesive layer corresponding to the first region.

2. The display device of claim 1 , wherein the at least a portion of the adhesive layer that corresponds to the bending area has greater hardness than that of the at least a portion of the adhesive layer corresponding to the first region.

3. The display device of claim 2 , wherein the adhesive layer comprises a portion having decreasing hardness or a portion having increasing adhesive force in a direction from a center of the bending area to a center of the first region along the adhesive layer.

4. The display device of claim 1 , wherein a portion of the adhesive layer corresponding to the second region has a same hardness as that of a portion of the adhesive layer corresponding to the bending area.

5. The display device of claim 4 , wherein a portion of the adhesive layer corresponding to the bending area and the second region has greater hardness than that of the at least a portion of the adhesive layer corresponding to the first region.

6. The display device of claim 5 , wherein the adhesive layer comprises a portion having decreasing hardness or a portion having increasing adhesive force in a direction from a center of the bending area to a center of the first region along the adhesive layer.

7. The display device of claim 1 , further comprising a light-shielding layer below a portion of the protective film base corresponding to the display portion, the light-shielding layer corresponding to at least a portion of the display portion.

8. The display device of claim 7 , wherein the light-shielding layer is configured to shield against ultraviolet rays.

9. The display device of claim 7 , wherein the substrate is configured to be bent such that a portion of a lower surface thereof in the first region faces at least a portion of a lower surface thereof in the second region,
wherein the protective film base corresponds to the first and second regions and has an opening corresponding to the bending area, and
wherein the light-shielding layer contacts both a portion of the protective film base corresponding to the first region and a portion of the protective film base corresponding to the second region.

10. The display device of claim 7 , wherein the substrate is configured to be bent such that a portion of a lower surface thereof in the first region faces at least a portion of a lower surface thereof in the second region,
wherein the protective film base is below the substrate corresponding to at least a portion of the first region, and
wherein the light-shielding layer contacts a portion of the protective film base corresponding to the first region and a portion of the adhesive layer corresponding to the second region.

11. The display device of claim 1 , further comprising a heat-insulating layer below a portion of the protective film base corresponding to the display portion, the heat-insulating layer corresponding to at least a portion of the display portion.

12. The display device of claim 11 , wherein the substrate is configured to be bent such that a portion of a lower surface thereof in the first region faces at least a portion of a lower surface thereof in the second region,
wherein the protective film base corresponds to the first and second regions and has an opening corresponding to the bending area, and
wherein the heat-insulating layer contacts both a portion of the protective film base corresponding to the first region and a portion of the protective film base corresponding to the second region.

13. The display device of claim 11 , wherein the substrate is configured to be bent such that a portion of a lower surface thereof in the first region faces at least a portion of a lower surface thereof in the second region,
wherein the protective film base is below a portion of the substrate to correspond to at least a portion of the first region, and
wherein the heat-insulating layer contacts a portion of the protective film base corresponding to the first region and a portion of the adhesive layer corresponding to the second region.

14. A display device comprising:
a substrate comprising a first region, a second region, and a bending region between the first region and the second region, the substrate being bent at the bending region and configured to support a display portion above the first region; and
a protective film below the substrate and comprising a protective film base covering at least a portion of the first region, and further comprising an adhesive layer covering the bending region and the first and second regions, a first portion of the adhesive layer corresponding to the first region having a hardness different from that of a second portion of the adhesive layer corresponding to the bending region.

15. The display device of claim 14 , wherein the protective film base covers a portion of the second region facing the first region, when the substrate is bent, and does not cover the bending region.

16. The display device of claim 15 , wherein the adhesive layer is locally hardened through exposure to UV radiation or application of heat, and
wherein, as a result of the exposure to UV radiation or the application of heat, the second portion of the adhesive layer has a greater hardness than that of the first portion of the adhesive layer and a third portion of the adhesive layer corresponding to the second region.

17. The display device of claim 15 , further comprising a heat-insulating layer covering a portion of the protective film base corresponding to the first region and the second region.

18. The display device of claim 14 , further comprising a light-shielding layer covering a portion of the protective film base corresponding to the first region, the light-shielding layer being configured to reduce exposure to UV radiation at a first portion of the adhesive layer relative to the second portion of the adhesive layer.

19. The display device of claim 14 , wherein the second portion of the adhesive layer has a greater hardness than that of the first portion of the adhesive layer.

20. The display device of claim 19 , wherein the second portion of the adhesive layer has a same hardness as that of a third portion of the adhesive layer corresponding to the second region.

21. The display device of claim 14 , wherein a color of the second portion of the adhesive layer is different from that of the first portion of the adhesive layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Choi Yoonsun
• Kim Mugyeom
• Lee Sangjo
• Choi Wonsuk

Classifications

• H01L51/5253 Primary

  Electricity · mapped topic

• H01L27/3272

  Electricity · mapped topic

• H01L2251/5338

  Electricity · mapped topic

• H01L51/529

  Electricity · mapped topic

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title