Touch display panel and touch display device

Patent metadata

Field	Value
Publication number	US-11698696-B1
Application number	US-202217948266-A
Country	US
Kind code	B1
Filing date	Sep 20, 2022
Priority date	Jun 28, 2022
Publication date	Jul 11, 2023
Grant date	Jul 11, 2023

Abstract

A touch display panel and a touch display device. The touch display panel includes a first display area, a second display area and a binding area arranged along a first direction, and a touch bonding pad is arranged in the binding area and is configured to input touch driving signals; a plurality of touch electrodes are arranged in each of the first display area and the second display area; the touch display panel further includes a plurality of touch signal lines extending along the first direction and arranged at intervals along a second direction, the touch bonding pad is electrically connected to the touch electrodes by the touch signal lines; and touch signal lines electrically connected to the touch electrodes in the first display area are first touch signal lines, touch signal lines electrically connected to the touch electrodes in the second display area are second touch signal lines.

First claim

What is claimed is:

1. A touch display panel, wherein the touch display panel comprises a first display area, a second display area and a binding area arranged along a first direction, and a touch bonding pad is arranged in the binding area and is configured to input touch driving signals;
a plurality of touch electrodes are arranged in each of the first display area and the second display area;
the touch display panel further comprises a plurality of touch signal lines extending along the first direction and arranged at intervals along a second direction, the touch bonding pad is electrically connected to the touch electrodes by the touch signal lines, and the first direction intersects the second direction;
touch signal lines electrically connected to the touch electrodes in the first display area are first touch signal lines, touch signal lines electrically connected to the touch electrodes in the second display area are second touch signal lines, and a minimum width of each of the second touch signal lines along the second direction is less than a minimum width of each of the first touch signal lines along the second direction;
the touch display panel further comprises black matrixes;
each of the first display area and the second display area comprises a plurality of pixel units arranged along the second direction, and each of the pixel units comprises a plurality of sub-pixels separated by the black matrixes along the second direction;
along a direction perpendicular to a plane where the touch display panel is positioned, each of the touch signal lines at least partially overlaps at least one of the black matrixes;
each of the pixel units comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel arranged at intervals along the second direction;
along the second direction, a width of a black matrix adjacent to the first color sub-pixel, a width of a black matrix adjacent to the second color sub-pixel and a width of a black matrix adjacent to the third color sub-pixel are different from one another; and
each of the pixel units corresponds to one of the first touch signal lines and one of the second touch signal lines, along the direction perpendicular to the plane where the touch display panel is positioned, the first touch signal line at least partially overlaps a widest black matrix among the black matrix adjacent to the first color sub-pixel, the black matrix adjacent to the second color sub-pixel and the black matrix adjacent to the third color sub-pixel, and the second touch signal line at least partially overlaps a second widest black matrix among the black matrix adjacent to the first color sub-pixel, the black matrix adjacent to the second color sub-pixel and the black matrix adjacent to the third color sub-pixel;
along the second direction, a distance between a center point of the first color sub-pixel and a center point of the second color sub-pixel is a first distance, and a distance between the center point of the second color sub-pixel and a center point of the third color sub-pixel is a second distance, wherein
the second distance is not equal to the first distance, and a pixel opening of the first color sub-pixel, a pixel opening of the second color sub-pixel and a pixel opening of the third color sub-pixel are of a same size; or
the second distance is equal to the first distance, and a pixel opening of the first color sub-pixel, a pixel opening of the second color sub-pixel and a pixel opening of the third color sub-pixel are of different sizes; and

along the direction perpendicular to the plane where the touch display panel is positioned, the widest black matrix completely covers the first touch signal line, and the second widest black matrix completely covers the second touch signal line.

2. The touch display panel according to claim 1 , wherein
each of the pixel units corresponds to two of the plurality of touch signal lines, each of the two touch signal lines is arranged between sub-pixels of the pixel unit along the second direction, and the sub-pixels between which one of the two touch signal lines is arranged are at least partially different from the sub-pixels between which the other of the two touch signal lines is arranged;
one of the two touch signal lines is one of the first touch signal lines, and the other of the two touch signal lines is one of the second touch signal lines.

3. The touch display panel according to claim 2 , wherein the second touch signal lines and the touch electrodes are positioned in different film layers, and the second touch signal lines, after being electrically connected to the touch electrodes by first vias, terminate along the first direction.

4. The touch display panel according to claim 2 , wherein the second touch signal lines and the touch electrodes are positioned in different film layers, and the second touch signal lines, after being electrically connected to the touch electrodes by first vias, extend to and terminate at an edge of the second display area close to the first display area.

5. The touch display panel according to claim 3 , wherein the touch display panel further comprises dummy touch signal lines electrically connected to the touch electrodes;
each of the second touch signal lines corresponds to at least one of the dummy touch signal lines;
along the first direction, the at least one dummy touch signal line corresponding to the second touch signal line is positioned on a side of the second touch signal line away from the binding area; and
along a direction perpendicular to a plane where the touch display panel is positioned, each of the dummy touch signal lines at least partially overlaps at least one of the touch electrodes.

6. The touch display panel according to claim 4 , wherein the touch display panel further comprises dummy touch signal lines electrically connected to the touch electrodes;
each of the second touch signal lines corresponds to at least one of the dummy touch signal lines;
along the first direction, the at least one dummy touch signal line corresponding to the second touch signal line is positioned on a side of the second touch signal line away from the binding area; and
along a direction perpendicular to a plane where the touch display panel is positioned, each of the dummy touch signal lines at least partially overlaps at least one of the touch electrodes.

7. The touch display panel according to claim 1 , wherein the second touch signal lines and the touch electrodes are positioned in different film layers, and the second touch signal lines, after being electrically connected to the touch electrodes by first vias, extend to and terminate at the first display area.

8. The touch display panel according to claim 7 , wherein a minimum length of each of the second touch signal lines along the first direction is the same as a minimum length of each of the first touch signal lines along the first direction.

9. The touch display panel according to claim 1 , wherein along the second direction, a width of a black matrix between the third color sub-pixel and a first color sub-pixel in an adjacent pixel unit is a first width, a width of a black matrix between the third color sub-pixel and the second color sub-pixel is a second width and a width of a black matrix between the second color sub-pixel and the first color sub-pixel is a third width;
the first width>the second width>the third width, or the second width>the first width>the third width, or the first width>the third width>the second width; and
the first color sub-pixel comprises a red sub-pixel, the second color sub-pixel comprises a green sub-pixel and the third color sub-pixel comprises a blue sub-pixel.

10. The touch dis

Assignees

• Shanghai Avic Optoelectronics

Inventors

• Jin Huijun
• Qin Dandan

Classifications

• G06F3/04164 Primary

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

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/044

  by capacitive means · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• G09F9/30

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title