DISPLAY DEVICE

• US 20170047357A1
• Filed: 07/21/2016
• Published: 02/16/2017
• Est. Priority Date: 08/11/2015
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kwak, Won Kyu, Lee, Jae Yong
• Granted Patent: US 10,483,291 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01L 27/1244 for preventing breakage, peeling or short circuiting
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

A display device is disclosed. In one aspect, the display device includes a substrate including a display area, the display area including a plurality of pixels configured to display an image and a pad area adjacent to the pad area and configured to transfer electrical signals. At least a portion of the pad area is bendable. The display device also includes an insulating layer formed over the substrate and including a bending groove in the pad area. The bending groove includes a sidewall. A plurality of peripheral wires is formed over the insulating layer, and a cutoff portion is connected to the sidewall and disposed between adjacent peripheral wires.

Claims

1. A display device comprising:

a substrate including a display area, the display area including a plurality of pixels configured to display an image and a pad area adjacent to the pad area and configured to transfer electrical signals, wherein at least a portion of the pad area is bendable;

an insulating layer formed over the substrate and including a bending groove in the pad area, wherein the bending groove includes a sidewall;

a plurality of peripheral wires formed over the insulating layer; and

a cutoff portion connected to the sidewall and disposed between adjacent peripheral wires.

2. The display device of claim 1, wherein the bending groove extends in a direction crossing a direction in which the peripheral wires extends.

3. The display device of claim 1, wherein the cutoff portion is formed on the same layer as the insulating layer.

4. The display device of claim 1, wherein the cutoff portion is formed of the same material as the insulating layer.

5. The display device of claim 1, wherein the cutoff portion is integrally formed with the insulating layer.

6. The display device of claim 1, wherein the width of the cutoff portion is substantially the same from the sidewall to an end region of the cutoff portion.

7. The display device of claim 1, wherein the width of the cutoff portion decreases from the sidewall to an end of the cutoff portion.

8. The display device of claim 1, wherein the display area includes a display wire extending from the pixel to the pad area, and wherein an end region of the peripheral wire contacts the display wire through a first contact hole.

9. The display device of claim 1, wherein the pad area includes a pad electrode and a pad wire, wherein the other end of the peripheral wire contacts the pad wire through a second contact hole, and wherein the pad electrode contacts the pad wire through a pad contact hole.

10. The display device of claim 1, wherein the display area is connected to the display wire and includes a thin film transistor comprising a gate electrode, a source electrode, and a drain electrode, wherein the display wire is formed of the same material as the gate electrode, and wherein the peripheral wire is formed of the same material as the source and drain electrodes.

11. The display device of claim 1, wherein the cutoff portion includes a plurality of protrusions protruding from the sidewall to an edge of the pad area.

12. The display device of claim 1, wherein the cutoff portion has a plurality of recesses recessed from the sidewall to an edge of the pad area.

13. The display device of claim 1, wherein the height of the cutoff portion is substantially equal to or less than that of the insulating layer.

14. A display device comprising:

a substrate including a display area configured to display an image and a pad area adjacent to the pad area and configured to transfer electrical signals to the display area, wherein a portion of the pad area is bendable;

an insulating layer formed over the substrate and including a bending groove formed in the pad area, wherein the bending groove includes a sidewall;

a plurality of display wires formed in the display area;

a plurality of peripheral wires formed in the peripheral area and electrically connected to the display wires; and

a cutoff portion extending from the sidewall into the display area or protruding from the insulation layer in the display area into the sidewall in the peripheral area, wherein the cutoff portion is interposed between adjacent peripheral wires.

15. The display device of claim 14, wherein the height of the bending groove is less than that of the rest of the insulating layer.

16. The display device of claim 15, wherein the cutoff portion is substantially rectangular.

17. The display device of claim 16, wherein a selected display wire and a selected peripheral wire overlap in an overlap region in the display area, and wherein the overlap region has a length that is less than that of the cutoff portion.

18. The display device of claim 15, wherein the cutoff portion is substantially triangular.

19. The display device of claim 14, wherein the sidewall overlaps a selected peripheral wire in the depth dimension of the display device.

20. The display device of claim 14, wherein the width of the cutoff portion is less than the width of the peripheral wire.