IP Library › Granted Patent US 11,749,148
Granted Patent B2
US 11,749,148 · App. 17/537,684 · Granted Sep 5, 2023

Display apparatus

Inventors: Seyong Lee (Gimpo-si, KR); SungHyun Jang (Paju-si, KR); JungWoo Han (Cheongju-si, KR)
Assignee: LG Display Co., Ltd.
G09G3/006G06F3/0412G06F3/0416H10K50/84G06F3/0446G09G2310/08H10K50/844H10K59/131H10K59/40
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Quick Facts
Patent No.
US 11,749,148
App. No.
17/537,684
Granted
Sep 5, 2023
Kind
B2
Abstract

A display apparatus according to an example embodiment may include: a substrate including a display area and a non-display area outside the display area; a plurality of pixels in the display area; a plurality of touch electrodes overlapping with the pixels in the display area; a gate driving circuit in the non-display area and connected to the touch electrodes via at least one gate driving line; and a touch inspection circuit in the non-display area and connected to the touch electrodes through at least one touch line, the touch inspection circuit including at least one touch inspection switch and a touch inspection control switch.

Claims (39)

1. A display apparatus, comprising:

a substrate including a display area and a non-display area outside the display area;

a plurality of pixels in the display area;

a plurality of touch electrodes overlapping with the pixels in the display area;

a gate driving circuit in the non-display area and connected to the touch electrodes via at least one gate driving line; and

a touch inspection circuit in the non-display area and connected to the touch electrodes through at least one touch line, the touch inspection circuit including at least one touch inspection switch and a touch inspection control switch.

2. The display apparatus of claim 1 , wherein the touch inspection circuit further includes a pad for the touch inspection control switch and a touch pad.

3. The display apparatus of claim 2 , wherein the at least one touch inspection switch is connected with the touch electrodes via the at least one touch line, and

wherein the at least one touch line overlaps with and is electrically connected to the touch pad.

4. The display apparatus of claim 2 , wherein the pad for the touch inspection control switch is configured to be connected to a terminal of an auto probe unit.

5. The display apparatus of claim 1 , wherein the at least one touch inspection switch is connected to the at least one gate driving line via at least one corresponding reference line.

6. The display apparatus of claim 5 , wherein the at least one touch inspection switch is connected to the touch electrodes via a plurality of touch lines, and

wherein one of the at least one touch inspection switch is connected to two or more of the touch lines and to only one of the at least one gate driving line.

7. The display apparatus of claim 1 , further comprising:

a dam disposed in the non-display area,

wherein the at least one touch line is disposed above the dam.

8. The display apparatus of claim 7 , wherein the dam is disposed above the gate driving circuit and at least partially overlaps the gate driving circuit.

9. The display apparatus of claim 1 , wherein the at least one gate driving line includes a gate high voltage line, a gate low voltage line, an EM driver start line, an EM driver clock line, a scan driver start line, and a scan driver clock line.

10. The display apparatus of claim 1 , wherein the touch electrodes include a plurality of Tx electrodes arranged along a first direction in the display area and a plurality of Rx electrodes arranged along a second direction in the display area, the first direction crossing the second direction.

11. The display apparatus of claim 10 , wherein the at least one touch line includes at least one Tx electrode touch line connected to the Tx electrodes and at least one Rx electrode touch line connected to the Rx electrodes.

12. The display apparatus of claim 1 , wherein:

the at least one touch inspection switch includes a transistor,

the touch inspection control switch includes a transistor, and

a gate electrode of the at least one touch inspection switch is connected to a drain of the touch inspection control switch.

13. A display apparatus, comprising:

a substrate including a display area and a non-display area outside the display area;

a plurality of light emitting diodes in the display area;

a plurality of touch electrodes overlapping with the light emitting diodes in the display area;

at least one touch inspection circuit in the non-display area and connected with the touch electrodes, the at least one touch inspection circuit including at least one touch inspection switch and a touch inspection control switch;

at least one gate driving circuit in the non-display area and connected with the touch electrodes via at least one gate driving line; and

a dam surrounding the display area.

14. The display apparatus of claim 13 , wherein the touch inspection circuit further includes a pad for the touch inspection control switch and a touch pad.

15. The display apparatus of claim 14 , wherein the at least one touch inspection switch is connected with the touch electrodes via at least one touch line, and

wherein the at least one touch line overlaps with and is electrically connected to the touch pad.

16. The display apparatus of claim 13 , wherein the at least one touch inspection switch is connected to the touch electrodes via at least one touch line.

17. The display apparatus of claim 16 , wherein the at least one touch line is disposed above the dam.

18. The display apparatus of claim 13 , wherein the at least one touch inspection switch is connected to the at least one gate driving line via at least one corresponding reference line.

19. The display apparatus of claim 13 , wherein the at least one gate driving line includes a gate high voltage line, a gate low voltage line, an EM driver start line, an EM driver clock line, a scan driver start line, and a scan driver clock line.

20. The display apparatus of claim 13 , wherein the touch electrodes include a plurality of Tx electrodes arranged along a first direction in the display area and a plurality of Rx electrodes arranged along a second direction in the display area, the first direction crossing the second direction.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 30, 2021
From: LEE, SEYONG; JANG, SUNGHYUN; HAN, JUNGWOO
To: LG DISPLAY CO., LTD.
Reel/Frame 058239/0217 →
Priority Claims (1)
KR 10-2020-0175 813 · Dec 15, 2020 · national
Continuity (1)
Related Publication 20220187939A1 · Jun 16, 2022