TOUCH DISPLAY PANEL AND DISPLAY DEVICE

• US 20180341354A1
• Filed: 09/13/2017
• Published: 11/29/2018
• Est. Priority Date: 05/24/2017
• Status: Active Grant

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited)
• Inventors: GUO, Hao, LIU, Jine, KONG, Xiangjian, ZHANG, Min
• Granted Patent: US 10,503,296 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G02F 1/136286 Wiring, e.g. gate line, drain line
• CPC Class Codes: G02F 2201/121 common or background
• CPC Class Codes: G02F 2201/123 pixel
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes

Abstract

A touch display panel includes: a base substrate provided with multiple gate lines and data lines which are insulated from and intersecting with each other to define multiple sub-pixels; a common electrode layer, formed by multiple self-capacitance electrodes arranged in an M*N array; a drive integrated circuit; and multiple touch detection signal lines; at least three adjacent columns of sub-pixels constitute a pixel column, each column of sub-pixels is parallel to an extending direction of the data line; the touch detection signal line is located between two adjacent columns of sub-pixels, the multiple touch detection signal lines connects the self-capacitance electrode with the drive integrated circuit, at least part of two adjacent pixel columns is not provided with the touch detection signal line therebetween; the drive integrated circuit provides common signal or touch detection signal to the touch detection signal line in display stage or touch stage, respectively.

Claims

1. A touch display panel, comprising:

a base substrate,

a plurality of gate lines provided on the base substrate,

a plurality of data lines provided on the base substrate,

a common electrode layer formed by a plurality of self-capacitance electrodes arranged in an M*N array;

a drive integrated circuit; and

a plurality of touch detection signal lines;

wherein the plurality of gate lines and the plurality of data lines are insulated from and intersecting with each other to define a plurality of sub-pixels, at least three adjacent sub-pixel columns of the plurality of sub-pixels constitute one pixel column, each sub-pixel column is parallel to an extending direction of the plurality of data lines;

each of the plurality of touch detection signal lines is located between two adjacent pixel columns, the plurality of touch detection signal lines connects the plurality of self-capacitance electrodes with the drive integrated circuit, at least a part of the two adjacent pixel columns is not provided with the touch detection signal line therebetween;

in a display stage, the drive integrated circuit provides a common signal to the plurality of touch detection signal lines;

in a touch stage, the drive integrated circuit provides a touch detection signal to the plurality of touch detection signal lines.

2. The touch display panel according to claim 1, further comprising:

a plurality of metal lines, the plurality of metal lines is arranged in a gap between two adjacent columns of the plurality of self-capacitance electrodes, the two adjacent columns of the plurality of self-capacitance electrodes are arranged along an extending direction of a scan line;

wherein the plurality of metal lines and the plurality of touch detection signal lines are arranged in a same layer and are parallel to each other;

in the display stage, the drive integrated circuit provides a common signal to the plurality of metal lines;

in the touch stage, the drive integrated circuit provides a touch detection signal to the plurality of metal lines.

3. The touch display panel according to claim 2, wherein in each column of self-capacitance electrodes, each self-capacitance electrode is corresponding to one of M touch detection signal lines one by one.

4. The touch display panel according to claim 3, wherein each of the plurality of self-capacitance electrodes comprises a first area and a second area;

each two adjacent pixel columns corresponding to the first area are provided with a touch detection signal line therebetween;

each two adjacent pixel columns corresponding to the second area are not provided with a touch detection signal line.

5. The touch display panel according to claim 4, wherein the plurality of touch detection signal lines and the plurality of data lines are arranged in a same layer.

6. The touch display panel according to claim 5, further comprising:

a first substrate, arranged opposite to the base substrate;

a black matrix layer, arranged at a surface of a side of the first substrate facing the base substrate;

wherein the black matrix layer comprises a first black matrix and a second black matrix, in the extending direction of the scan line, a width of the first black matrix is smaller than a width of the second black matrix;

both an orthographic projection of the plurality of touch detection signal lines on the first substrate and an orthographic projection of the plurality of metal lines on the first substrate are located in an area where the second black matrix is located.

7. The touch display panel according to claim 5, wherein the plurality of data lines are equally spaced from each other.

8. The touch display panel according to claim 5, wherein a light transmitting area of one of the plurality of sub-pixels is identical to a light transmitting area of any other one of the plurality of sub-pixels.

9. The touch display panel according to claim 8, wherein a distance between two adjacent data lines located at two sides of the touch detection signal line is larger than a distance between any other two adjacent data lines.

10. The touch display panel according to claim 5, wherein the touch detection signal line is adjacent to a sub-pixel of a same color.

11. The touch display panel according to claim 10, wherein each pixel column comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the touch detection signal line is adjacent to the red sub-pixel or the blue sub-pixel.

12. The touch display panel according to claim 3, wherein for the touch detection signal line corresponding to each of the self-capacitance electrode, a difference of number of the pixel columns at two sides of each touch detection signal line is no more than 1, an area between two adjacent touch detection signal lines is a third area, a difference of number of the pixel columns contained by any two of the third areas is no more than 1.

13. The touch display panel according to claim 1, further comprising:

a pixel electrode layer, arranged at a side of the base substrate facing the first substrate;

wherein the pixel electrode layer and the common electrode layer are arranged in different layers.

14. A display device, comprising a touch display panel, the touch display panel comprising:

a base substrate,

a plurality of gate lines provided on the base substrate,

a plurality of data lines provided on the base substrate,

a common electrode layer formed by a plurality of self-capacitance electrodes arranged in an M*N array;

a drive integrated circuit; and

a plurality of touch detection signal lines;

wherein the plurality of gate lines and the plurality of data lines are insulated from and intersecting with each other to define a plurality of sub-pixels, at least three adjacent sub-pixel columns of the plurality of sub-pixels constitute one pixel column, each sub-pixel column is parallel to an extending direction of the plurality of data lines;

each of the plurality of touch detection signal lines is located between two adjacent pixel columns, the plurality of touch detection signal lines connects the plurality of self-capacitance electrodes with the drive integrated circuit, at least a part of the two adjacent pixel columns is not provided with the touch detection signal line therebetween;

in a display stage, the drive integrated circuit provides a, common signal to the plurality of touch detection signal lines;

in a touch stage, the drive integrated circuit provides a touch detection signal to the plurality of touch detection signal lines.