Touch display device

Patent metadata

Field	Value
Publication number	US-12455645-B2
Application number	US-202318476073-A
Country	US
Kind code	B2
Filing date	Sep 27, 2023
Priority date	Jan 31, 2023
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

Disclosed is a display device with an integrated touch screen comprising a substrate; a display device comprising a plurality of pixels disposed on the substrate; and a first touch electrode and a second touch electrode disposed on the display device, the first touch electrode includes a first sub-touch electrode and a second sub-touch electrode, the second touch electrode includes a third sub-touch electrode and a fourth sub-touch electrode, and a position of a plurality of open parts disposed between the first sub-touch electrode and the third sub-touch electrode or between the second sub-touch electrode and the fourth sub-touch electrode, is adjusted so that a virtual line connecting the plurality of open parts is not in a straight line.

First claim

What is claimed is:

1. A touch display device, comprising:
a first electrode having a plurality of first intersection points;
a second electrode having a plurality of second intersection points;
a first opening spaced from a first one of the first intersection points by a first distance, the first opening being provided in a boundary area where an end of the first electrode faces an end of the second electrode;
a second opening spaced from a second one of the first intersection points by a second distance that is different from the first distance;
a third opening spaced from the second one of the first intersection points by a third distance that is different from the second distance; and
a first dummy electrode aligned with the first opening, the first dummy electrode provided below the first electrode and the second electrode,
wherein the first, second, and third openings are located between the first electrode and the second electrode, and
wherein one of the first electrode and the second electrode receives a signal from a first touch driver and the other of the first electrode and the second electrode transmits a signal to a second touch driver.

2. The touch display device of claim 1 , wherein the third distance is substantially the same as the first distance.

3. The touch display device of claim 1 , comprising:
a substrate; and
wherein the first dummy electrode is on the substrate, the first and second electrode being spaced from the substrate by the first dummy electrode.

4. The touch display device of claim 1 , wherein the first electrode overlaps a first side of the first dummy electrode and the second electrode overlaps a second side of the first dummy electrode.

5. The touch display device of claim 1 , wherein the first dummy electrode is closer to the first electrode than to the second electrode.

6. The touch display device of claim 1 , wherein the third distance is different from the first distance.

7. The touch display device of claim 6 , wherein the third distance is larger than the first distance.

8. The touch display device of claim 1 , wherein the first dummy electrode includes a first part and a second part that are spaced from each other.

9. The touch display device of claim 8 , wherein the first part is closer to the first electrode and the second part is closer to the second electrode.

10. The touch display device of claim 9 , wherein the first electrode overlaps the first part of the first dummy electrode and the second electrode overlaps the second part of the first dummy electrode.

11. A device, comprising:
a first touch electrode having a plurality of first extensions in a first direction that are coupled to a plurality of second extensions in a second direction that is transverse to the first direction;
a plurality of first intersection points based on an overlap of the plurality of first extensions and the plurality of second extensions;
a second touch electrode having a plurality of third extensions in the first direction that are coupled to a plurality of fourth extensions in the second direction;
a plurality of second intersection points based on an overlap of the plurality of third extensions and the plurality of fourth extensions;
a plurality of openings between the first touch electrode and the second touch electrode, the plurality of openings including:
a first opening adjacent to a first one of the plurality of first intersection points and between a first one of the plurality of first extensions and a first one of the plurality of third extensions, the first opening being provided in a boundary area where an end of the first touch electrode faces an end of the second touch electrode;
a second opening adjacent to a second one of the plurality of first intersection points and between a first one of the plurality of second extensions and a first one of the plurality of fourth extensions;
a third opening adjacent to the second one of the plurality of first intersection points and between a second one of the plurality of first extensions and a second one of the plurality of third extensions, the third opening being closer than the second opening from the second one of the plurality of first intersection points;
a fourth opening adjacent to a third one of the plurality of first intersection points and between a second one of the plurality of second extensions and a second one of the plurality of fourth extensions; and
a first dummy electrode aligned with the first opening, the first dummy electrode provided below the first touch electrode and the second touch electrode,
wherein the first one of the plurality of first intersection points, the second one of the plurality of first intersection points, and the third one of the plurality of first intersection points are in a linear configuration, and
wherein one of the first touch electrode and the second touch electrode receives a signal from a first touch driver and the other of the first touch electrode and the second touch electrode transmits a signal to a second touch driver.

12. The device of claim 11 , wherein the fourth opening is adjacent to the third opening and closer to the third opening than the second opening.

13. The device of claim 12 , wherein the first and third openings are aligned along a third direction that is transverse to the first direction and is transverse to the second direction.

14. The device of claim 13 , wherein the second and fourth openings being aligned along the third direction.

15. A device, comprising:
a first touch electrode having a pattern of first extensions that intersect at a plurality of first intersection points;
a second touch electrode having a pattern of second extensions that intersect at a plurality of second intersection points;
a plurality of openings between first ends of the first touch electrode and second ends of the second touch electrode, the plurality of openings including:
a first opening at a first location between a first one of the first intersection points and a first one of the second intersection points, the first location being adjacent to the first one of the first intersection points, the first opening being provided in a boundary area where an end of the first touch electrode faces an end of the second touch electrode;
a second opening at a second location between a second one of the first intersection points and the first one of the second intersection points, the second location being adjacent to the second one of the first intersection points;
a third opening at a third location between a third one of the first intersection points and a second one of the second intersection points, the third location being adjacent to the third one of the first intersection points, a first line through the first, second, and third opening being non-linear; and
a first dummy electrode aligned with the first opening, the first dummy electrode provided below the first touch electrode and the second touch electrode,
wherein a second line through the first one of the first intersection points, the second one of the first intersection points, and the third one of the first intersection points is linear, and
wherein the first to third openings are in communication with one another through open areas provided in a boundary area where an ends of the first touch electrode faces an ends of the second touch electrode.

16. The device of claim 15 , wherein the first location is at a fourth distance from a first one of the second intersection points and the third location is at a fifth distance from a second one of the second intersection points,

Assignees

• Lg Display Co Ltd

Inventors

• Kong Minsuk
• Choe Youngjin
• Lee Mirae
• Jeon Youngjun

Classifications

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F3/0446

  using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes · CPC title

• G06F3/046

  by electromagnetic means · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title