Touch display panel and display device

Inventor: Liang Ma (Wuhan, CN)

Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.

G06F3/0446 G06F3/0412

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Quick Facts

Patent No.: US 12,687,954
App. No.: 17/619,584
Granted: Jul 21, 2026
Kind: B2

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Abstract

The present application provides a touch display panel and a display device. In the touch display panel, the first channel wirings are arranged in in a first direction, each of the first channel wirings is electrically connected to at least one of the first control units, each of the first control units is electrically connected to a corresponding one of the touch wirings. The first control units are arranged in at least two rows in a second direction. In the first direction, adjacent two of the first control units in adjacent ones of some of the rows at least partially overlap each other.

Claims (37)

1 . A touch display panel, comprising:

a plurality of touch wirings, wherein the touch wirings are arranged in a first direction; and

a demux circuit, wherein the demux circuit comprises a plurality of first control units and a plurality of first channel wirings, the first channel wirings are arranged in the first direction, each of the first channel wirings is electrically connected to at least one of the first control units, and each of the first control units is electrically connected to a corresponding one of the touch wirings;

wherein the first control units are arranged in at least two rows in a second direction, the second direction intersects the first direction; and in the first direction, adjacent two of the first control units in adjacent two of at least some of the rows at least partially overlap each other;

wherein an interval between adjacent two of the first control units in the same column is less than a width of the first control unit.

2 . The touch display panel according to claim 1 , wherein the touch display panel further comprises first connection wirings, and the first control units are connected to the first channel wirings respectively through the first connection wirings;

wherein in the second direction, the first connection wirings corresponding to at least one of the first control units bend on edges of the first control units in adjacent ones of the rows.

3 . The touch display panel according to claim 1 , wherein in the second direction, the first control units corresponding to a (2M−1) th one of the touch wirings are arranged in a first row, the first control units corresponding to a 2M th of the touch wirings are arranged in a second row, wherein M is an integer greater than or equal to 1.

4 . The touch display panel according to claim 3 , wherein each number N of adjacent ones of the touch wirings are electrically connected to the same one of the first channel wirings, N is an integer greater than or equal to 2; the demux circuit further comprises signal transmission lines, the signal transmission lines comprise driver wirings of a number N, enabling wirings of a number N, and control wirings of a number N, and the signal transmission lines are arranged in the second direction;

wherein the first control units of the number N electrically connected to the same one of the first channel wirings are electrically connected to corresponding ones of the driver wirings, the enabling wirings, and the control wirings respectively.

5 . The touch display panel according to claim 4 , wherein the touch display panel further comprises second connection wirings, the first control units are electrically connected to corresponding ones of the control wirings through the second connection wirings;

wherein in the second direction, the second connection wiring corresponding to at least one of the first control units bends on edges of the first control units in adjacent ones of the rows.

6 . The touch display panel according to claim 4 , wherein each of the first control units comprises a first transistor and a second transistor;

a gate electrode of the first transistor is electrically connected to a corresponding one of the control wirings, a source electrode of the first transistor is electrically connected to a corresponding one of the touch wirings, a drain electrode of the first transistor is electrically connected to a corresponding one of the first channel wirings; a gate electrode of the second transistor is electrically connected to a corresponding one of the enabling wirings, a source electrode of the second transistor is electrically connected to a corresponding one of the driver wirings, and a drain electrode of the second transistor is electrically connected to a corresponding one of the touch wirings.

7 . The touch display panel according to claim 4 , wherein in the second direction, the signal transmission lines are located on a side of the first control units of the second row away from the first control units of the first row.

8 . The touch display panel according to claim 4 , wherein in the second direction, the signal transmission lines correspondingly connected to the first control units of the first row are located between the first control units of the first row and the first control units of the second row; and the signal transmission lines correspondingly connected to the first control units of the second row are located on the side of the first control units of the second row away from the first control units of the first row.

9 . The touch display panel according to claim 4 , wherein in the first direction, in the first control units of the first row, the first control units located in an odd column are arranged in a first sub-row, the first control units in an even column are arranged in a second sub-row, in the first control units of the second row, the first control units located in the odd columns are arranged in a third sub-row, the first control units in the even column are arranged in a fourth sub-row.

10 . The touch display panel according to claim 1 , wherein the demux circuit further comprises a plurality of second control units and a plurality of second channel wirings;

the second control units are disposed on a side of the first channel wirings away from the first control units; the second channel wirings are arranged in the first direction, each of the second channel wirings are electrically connected to at least one of the first channel wirings; in the first channel wirings commonly employing the same one of the second channel wirings, each of the first channel wirings is connected to the second channel wiring through a corresponding one of the second control units, each of the second control units is configured to control connection between the second channel wiring and a corresponding one of the first channel wirings.

11 . The touch display panel according to claim 10 , wherein the second control units in the second direction are arranged in at least two rows.

12 . The touch display panel according to claim 1 , wherein the touch display panel further comprises touch electrodes, the touch electrodes are arranged in an array, the touch electrodes are correspondingly connected to the touch wirings one by one;

wherein the touch display panel comprises a first end portion and a second end portion disposed oppositely, the demux circuit is disposed at the first end portion, in the second direction, in each column of the touch electrodes, the touch wirings correspondingly connected to the touch electrodes arranged sequentially from the first end portion to the second end portion are sequentially arranged in the first direction.

13 . A display device, comprising a touch display panel and a touch chip, and the touch display panel comprising:

a plurality of touch wirings, wherein the touch wirings are arranged in a first direction; and

wherein the touch chip is connected to the touch display panel for receiving touch signals;

wherein an interval between adjacent two of the first control units in the same column is less than a width of the first control unit.

14 . The display device according to claim 13 , wherein the touch display panel further comprises first connection wirings, and the first control units are connected to the first channel wirings respectively through the first connection wirings;

wherein in the second direction, the first connection wirings corresponding to at least one of the first control units bend on edges of the first control units in adjacent ones of the rows.

15 . The display device according to claim 13 , wherein in the second direction, the first control units corresponding to a (2M−1) th one of the touch wirings are arranged in a first row, the first control units corresponding to a 2M th of the touch wirings are arranged in a second row, wherein M is an integer greater than or equal to 1.

16 . The display device according to claim 15 , wherein each number N of adjacent ones of the touch wirings are electrically connected to the same one of the first channel wirings, N is an integer greater than or equal to 2; the demux circuit further comprises signal transmission lines, the signal transmission lines comprise driver wirings of a number N, enabling wirings of a number N, and control wirings of a number N, and the signal transmission lines are arranged in the second direction;

17 . The display device according to claim 16 , wherein the touch display panel further comprises second connection wirings, the first control units are electrically connected to corresponding ones of the control wirings through the second connection wirings;

wherein in the second direction, the second connection wiring corresponding to at least one of the first control units bends on edges of the first control units in adjacent ones of the rows.

18 . The display device according to claim 13 , wherein the touch display panel further comprises touch electrodes, the touch electrodes are arranged in an array, the touch electrodes are correspondingly connected to the touch wirings one by one;