Display device

Patent metadata

Field	Value
Publication number	US-11614832-B2
Application number	US-202117406053-A
Country	US
Kind code	B2
Filing date	Aug 18, 2021
Priority date	Sep 29, 2020
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

A display device includes a first area including a display area, a second area including a pad area, a bending area disposed between the first area and the second area, a plurality of touch signal lines extending from the second area to the first area through the bending area, a plurality of touch test lines disposed in the second area and separated and spaced apart from the plurality of touch signal lines, and a plurality of touch connection lines electrically connecting the plurality of touch signal lines and the plurality of touch test lines, wherein, in the second area, the plurality of touch signal lines and the plurality of touch test lines include a first conductive layer, and the plurality of touch connection lines includes a second conductive layer different from the first conductive layer.

First claim

What is claimed is:

1. A display device, comprising:
a first area including a display area;
a second area including a pad area;
a bending area disposed between the first area and the second area;
a plurality of touch signal lines extending from the second area to the first area through the bending area;
a plurality of touch test lines disposed in the second area and separated and spaced apart from the plurality of touch signal lines; and
a plurality of touch connection lines electrically connecting the plurality of touch signal lines and the plurality of touch test lines,
wherein, in the second area, the plurality of touch signal lines and the plurality of touch test lines include a first conductive layer, and the plurality of touch connection lines includes a second conductive layer different from the first conductive layer.

2. The display device of claim 1 , further comprising:
a plurality of first touch connection patterns electrically connecting the plurality of touch test lines and the plurality of touch connection lines; and
a plurality of second touch connection patterns electrically connecting the plurality of touch signal lines and the plurality of touch connection lines,
wherein, in the second area, the plurality of first touch connection patterns and the plurality of second touch connection patterns include a third conductive layer different from the first conductive layer and the second conductive layer.

3. The display device of claim 2 ,
wherein a first touch connection pattern of the plurality of first touch connection patterns overlaps a touch test line of the plurality of touch test lines and a touch connection line of the plurality of touch connection lines in a thickness direction, and a second touch connection pattern of the plurality of second touch connection patterns overlaps a touch signal line of the plurality of touch signal lines and the touch connection line in the thickness direction.

4. The display device of claim 3 ,
wherein each of the plurality of first touch connection patterns has an island shape, and each of the plurality of second touch connection patterns has an island shape.

5. The display device of claim 2 , further comprising:
a second power line extending from the second area to the first area via the bending area,
wherein, in the second area, the second power line includes the third conductive layer.

6. The display device of claim 5 ,
wherein, in the second area, the second power line surrounds the plurality of first touch connection patterns and the plurality of second touch connection patterns.

7. The display device of claim 6 ,
wherein, in the second area, the plurality of touch signal lines and the plurality of touch connection lines overlap the second power line.

8. The display device of claim 2 ,
wherein, in the bending area, a touch signal line of the plurality of touch signal lines includes the third conductive layer, and in the second area, the touch signal line is electrically connected to the third conductive layer through a contact.

9. The display device of claim 1 ,
wherein the first conductive layer is a touch conductive layer, and the second conductive layer is a gate conductive layer.

10. The display device of claim 1 ,
wherein, in the second area, a touch connection line of the plurality of touch connection lines intersects a touch signal line of the plurality of touch signal lines in a plan view.

11. The display device of claim 1 , further comprising:
a driving chip disposed on the second area,
wherein the plurality of touch signal lines is electrically connected to the driving chip.

12. A display device, comprising:
a first area including a display area;
a second area including a pad area;
a bending area disposed between the first area and the second area;
a plurality of touch signal lines extending from the second area to the first area through the bending area;
a plurality of touch test lines disposed in the second area and separated and spaced apart from the plurality of touch signal lines; and
a plurality of touch connection lines electrically connected to the plurality of touch signal lines and the plurality of touch test lines,
wherein, in the second area, the plurality of touch signal lines intersect the plurality of touch connection lines, and do not intersect the plurality of touch test lines in a plan view.

13. The display device of claim 12 ,
wherein, in the second area, the plurality of touch signal lines and the plurality of touch test lines include a first conductive layer, and the plurality of touch connection lines includes a second conductive layer different from the first conductive layer.

14. The display device of claim 13 ,
wherein the first conductive layer is a touch conductive layer, and the second conductive layer is a gate conductive layer.

15. The display device of claim 12 , further comprising:
a driving chip disposed on the second area,
wherein the plurality of touch signal lines is electrically connected to the driving chip.

16. A display device, comprising:
a first area including a display area;
a second area including a pad area;
a bending area disposed between the first area and the second area;
a plurality of touch signal lines extending from the second area to the first area through the bending area;
a plurality of touch test lines disposed in the second area and separated and spaced apart from the plurality of touch signal lines; and
a plurality of touch connection lines electrically connecting the plurality of touch signal lines and the plurality of touch test lines,
wherein the display device comprises:
a substrate;
a gate conductive layer disposed on the substrate;
a first insulating layer disposed on the gate conductive layer;
a data conductive layer disposed on the first insulating layer;
a second insulating layer disposed on the data conductive layer; and
a touch conductive layer disposed on the second insulating layer,
wherein, in the second area, the plurality of touch signal lines and the plurality of touch test lines include the touch conductive layer, and the plurality of touch connection lines includes the gate conductive layer.

17. The display device of claim 16 , further comprising:
a plurality of first touch connection patterns electrically connecting the plurality of touch test lines and the plurality of touch connection lines; and
a plurality of second touch connection patterns electrically connecting the plurality of touch signal lines and the plurality of touch connection lines,
wherein the plurality of first touch connection patterns and the plurality of second touch connection patterns include the data conductive layer.

18. The display device of claim 17 ,
wherein a first touch connection pattern of the plurality of first touch connection patterns overlaps a touch test line of the plurality of touch test lines and a touch connection line of the plurality of touch connection lines in a thickness direction, and a second touch connection pattern of the plurality of second touch connection patterns overlaps a touch signal line of the plurality of touch signal lines and the touch connection line in the thickness direction.

19. The display device of claim 18 ,
wherein each of the plurality of first touch connection patterns has an island shape, and each of the plurality of second touch connection patterns has an island shape.

20. The display device of claim 16 , further comprising:
a driving chip disposed on the seco

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Min Joo
• Kim Ki Cheol
• Kwak Won Kyu

Classifications

• H10K59/40

  OLEDs integrated with touch screens · CPC title

• G09G3/006

  Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays (testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309) · CPC title

• G06F3/0416

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• H10K77/111

  Flexible substrates · CPC title