Bendable display device

Patent metadata

Field	Value
Publication number	US-10719103-B2
Application number	US-201715616434-A
Country	US
Kind code	B2
Filing date	Jun 7, 2017
Priority date	Jun 28, 2016
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

A display device includes a display panel including a bendable display panel including a substrate and a plurality of pad portions on the substrate. The substrate includes a cutout between adjacent pad portions of the plurality of pad portions.

First claim

What is claimed is:

1. A display device comprising
a display panel including:
a substrate,
a plurality of pad portions, a display area and a bending area on the substrate, wherein the bending area is disposed between the display area and the plurality of pad portions, and wherein the plurality of the pad portions include a first pad portion and a second pad portion adjacent to each other, and
a protective film including a first protective film under the display area and a second protective film under the pad portions;
a first flexible printed circuit film disposed on the first pad portion; and
a second flexible printed circuit film disposed on the second pad portion and adjacent to the first flexible printed circuit film,
wherein the first protective film and the second protective film are separated from each other,
wherein the substrate further includes a cutout between adjacent the first and second pad portions,
wherein the cutout penetrates the substrate and the second protective film of the display panel in a thickness direction of the display panel,
wherein the first pad portion and the second pad portion are arranged along a first direction and the first flexible printed circuit film and the second flexible printed circuit film are spaced apart from each other in the first direction,
wherein a widest width of the cutout in the first direction is smaller than a spacing between the first and second flexible printed circuit films, and
wherein no additional flexible printed circuit film exists between the first and second flexible printed circuit films.

2. The display device of claim 1 , wherein
the display panel further includes a non-display area adjacent to the display area,
the plurality of pad portions are arranged along a first direction in the non-display area, and
the cutout extends in a second direction crossing the first direction.

3. The display device of claim 2 , wherein
the cutout extends in the second direction from an edge of the display panel opposite the display area of the display panel.

4. The display device of claim 3 , wherein
the bending area is bendable with respect to a bending axis extending in the first direction.

5. The display device of claim 4 , wherein
the bending area includes a plurality of wires, and
the plurality of wires extend along the second direction.

6. The display device of claim 5 , wherein
the display panel includes a plurality of fan-outs between the pad portions and the bending area, and
the cutout continuously extends from between the adjacent pad portions to a region between adjacent fan-outs of the plurality of fan-outs.

7. The display device of claim 1 , further comprising:
at least one flexible printed circuit film disposed on each of the pad portions; and
an integrated circuit chip disposed on each of the flexible printed circuit films.

8. The display device of claim 1 , wherein
the cutout penetrates the display panel in the thickness direction of the display panel.

9. A display device comprising:
a display panel including a display area displaying an image and a non-display area including a plurality of pad portions, wherein the plurality of the pad portions include a first pad portion and a second pad portion adjacent to each other;
a first flexible printed circuit film disposed on the first pad portion; and
a second flexible printed circuit film disposed on the second pad portion and adjacent to the first flexible printed circuit film,
wherein the first pad portion and the second pad portion are arranged along a first direction and the first flexible printed circuit film and the second flexible printed circuit film are spaced apart from each other in the first direction,
wherein the display panel includes a cutout between the first and second pad portions and the cutout extends in a second direction crossing the first direction,
wherein a widest width of the cutout in the first direction is smaller than a spacing between the first and second flexible printed circuit films, and
wherein no additional flexible printed circuit film exists between the first and second flexible printed circuit films.

10. The display device of claim 9 , wherein
the display panel includes a bending area between the display area and the first and second pad portions, and
the bending area includes a plurality of wires extending along the second direction.

11. The display device of claim 10 , wherein
the bending area is bendable with respect to a bending axis extending in the first direction.

12. The display device of claim 11 , further comprising:
a driving circuit chip disposed on each of the first and second flexible printed circuit films.

13. The display device of claim 12 , wherein
the cutout extends in the second direction from an edge of the display panel opposite the display area of the display panel.

14. The display device of claim 13 , wherein
the display panel includes a plurality of fan-outs between the plurality of pad portions and the bending area, and
the cutout extends to a region between neighboring fan-outs.

15. The display device of claim 9 , wherein
a plane shape of an end portion of the cutout facing the display area of the display panel is pointed, polygonal, or round.

16. The display device of claim 9 , wherein
the cutout penetrates the display panel in a thickness direction of the display panel.

17. A display device comprising:
a display panel including a display area displaying an image and a non-display area including a pad portion; and
a flexible printed circuit film disposed on the pad portion,
wherein the pad portion includes a plurality of pads arranged along a first direction,
the display panel includes a cutout formed between adjacent pads and extending in a second direction crossing the first direction,
the display panel includes a substrate, the pad portion positioned on a first side of the substrate, and a protection film positioned on a second side of the substrate,
the protection film is attached to the substrate by an adhesive layer and has a thickness larger than that of the substrate, and
the cutout penetrates the substrate and the adhesive layer and is formed through at least a part of the protection film in a thickness direction of the display panel.

18. The display device of claim 17 , wherein
the display panel includes a bending area between the display area and the pad portion, and
the bending area includes a plurality of wires extending along the second direction.

19. The display device of claim 18 , wherein
the bending area is bendable with respect to a bending axis extending along the first direction.

20. The display device of claim 17 , wherein
the cutout is formed along the second direction from an edge of the display panel opposite the display area of the display panel.

21. The display device of claim 17 , wherein
the cutout is formed in the second direction and extends beyond an edge of the display panel by a predetermined distance in the pad portion.

22. The display device of claim 17 , wherein
the cutout entirely penetrates the display panel in the thickness direction of the display panel.

23. The display device of claim 17 , wherein
the cutout is formed along the thickness direction of the display panel from a top surface of the display panel to a depth above a bottom surface of the display panel.

24. The display device of claim 1 ,
wherein the plural

Assignees

• Samsung Display Co Ltd

Inventors

• Chung Yun-Mo
• Lee Dae Woo
• Namkung Jun
• Park Soon Ryong
• Seong Ju Yeop
• Choi Hyun Kyu

Classifications

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• G02F1/133305 Primary

  Flexible substrates, e.g. plastics, organic film · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/411

  characterised by materials, geometry or structure of the substrates · CPC title