Touch display panel and method for driving the same, and touch device

Patent metadata

Field	Value
Publication number	US-10712846-B2
Application number	US-201514741381-A
Country	US
Kind code	B2
Filing date	Jun 16, 2015
Priority date	Dec 4, 2014
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

A touch display panel is disclosed. The touch display panel includes first touch electrodes and second touch sub-electrodes. The first touch electrodes are insulated from and intersect with the second touch sub-electrodes. At least two of the first touch electrodes are connected as at least one first touch electrode group, where each first touch electrode group is connected with a touch drive detection unit through a wire. In addition, second touch sub-electrodes corresponding to each of the first touch electrode groups form a second touch electrode group. Each second touch electrode group includes second touch electrode units, each including at least two second touch sub-electrodes. Each of the second touch sub-electrodes is connected with the touch drive detection unit through a different wire. Additionally, the touch drive detection unit transmits a touch drive signal to or receives a detection signal from the first touch electrodes or the second touch sub-electrodes.

First claim

What is claimed is:

1. A touch display panel, comprising:
a substrate;
a plurality of first touch electrodes and a plurality of second touch sub-electrodes are disposed on the substrate; wherein the plurality of first touch electrodes each is insulated from the plurality of second touch sub-electrodes each respectively, wherein a quantity of the plurality of first touch electrodes is N and wherein N is an integer larger than 1;
wherein each of the plurality of first touch electrodes extends in a first direction and is arranged apart from each other in a second direction perpendicular to the first direction; and
wherein at least a pair of the first touch electrodes of the plurality of first touch electrodes are electrically connected to each other to form one first touch electrode group, wherein each first touch electrode in one of the same first touch electrode groups receives a same touch drive signal at a same time;
wherein two or more of the plurality of the second touch sub-electrodes overlays with a same first touch electrode group in a direction perpendicular to the substrate, wherein said second touch sub-electrodes form one second touch electrode group, wherein the second touch electrode group comprises a plurality of second touch electrode units, and wherein the plurality of second touch electrode units in the same second touch electrode group is arranged apart from each other in the first direction;
wherein the plurality of the second touch electrode units each comprises at least two of the plurality of second touch sub-electrodes; wherein each of the second touch electrode units of said same second touch electrode group overlays with the first touch electrodes of the same first touch electrode group in the direction perpendicular to the substrate; and,
wherein a quantity of the first touch electrodes overlaying with said second touch sub-electrodes each in the direction perpendicular to the substrate is m, wherein m is a positive integer smaller than N;
where different second touch sub-electrodes of a same second touch electrode units are insulated from each other;
wherein the different second touch sub-electrodes in the same second touch electrode units are connected with a touch drive detection unit through different wires respectively; and
wherein said different second touch sub-electrodes detect touch signals from different first touch electrodes in the same first touch electrode group.

2. A method of driving a touch display panel of claim 1 , the method comprising at least one of:
in a touch phase of the touch display panel, wherein the first touch electrodes are drive electrodes, and the second touch sub-electrodes are detect electrodes, the first touch electrode groups receives a touch drive signal, and the second touch sub-electrodes output detection signals, wherein the detection signals indicate coordinates of a touch position on the touch display panel;
or

in a touch phase of the touch display panel, the first touch electrode groups receives a touch drive signal and output detection signals indicating a coordinate of a touch position on the touch display panel in the first direction, and the second touch sub-electrodes receive the touch drive signal and output detection signals indicating a coordinate of the touch position on the touch display panel in the second direction.

3. The method for driving a touch display panel according to claim 2 , wherein the plurality of first touch electrodes are the drive electrodes, and the second touch sub-electrodes are the detect electrodes, wherein the first touch electrodes receive the touch drive signal row by row by the wires through which the first touch electrode groups are connected, and wherein the second touch sub-electrodes output the detection signals by the wires through which the second touch sub-electrodes are connected.

4. The touch display panel according to claim 1 ,
wherein the second touch sub-electrodes in at least two second touch electrode units which belong to different second touch electrode groups and are arranged apart from each other in the second direction form at least two second touch electrode clusters, and different second touch sub-electrodes in a same second touch electrode cluster belong to different second touch electrode units; and
wherein second touch sub-electrodes in a same second touch electrode cluster are connected to the touch drive detection unit through a same one wire.

5. The touch display panel according to claim 1 ,
wherein the second touch sub-electrodes in one of the same second touch electrode units are arranged apart from each other in the second direction; and
wherein said second touch sub-electrode and each first touch electrode in the same first touch electrode group has an overlapping area in the direction perpendicular to the substrate.

6. The touch display panel according to claim 5 ,
wherein each of the second touch sub-electrodes and one of two adjacent first touch electrodes have an overlapping area; and
wherein the two adjacent first touch electrodes belong to different first touch electrode groups.

7. The touch display panel according to claim 6 , wherein the plurality of first touch electrode groups each comprises a plurality of electrically connected first touch electrodes not adjacent to each other.

8. The touch display panel according to claim 5 ,
wherein said first touch electrodes are strip-shaped electrodes, and said second touch sub-electrodes are block electrodes arranged in an array.

9. The touch display panel according to claim 8 , wherein
the first touch electrodes in a same first touch electrode group are arranged in parallel, and the first touch electrodes each has a uniform width along an extending direction.

10. The touch display panel according to claim 1 , wherein
each of the second touch sub-electrodes in one of a same second touch electrode units overlaying to a first touch electrode group and with each first touch electrode in the first touch electrode group has an overlapping field, and each of the second touch sub-electrodes and each different first touch electrodes have different overlapping areas.

11. The touch display panel according to claim 10 , wherein
each one of the second touch electrode units comprises two second touch sub-electrodes, wherein the two second touch sub-electrodes each has a right triangle shape, and wherein one of said two second touch sub-electrodes is arranged with a hypotenuse opposite to a hypotenuse of another of the two second touch sub-electrodes.

12. The touch display panel according to claim 11 , wherein an area of said right triangle shape is identical as other.

13. A touch device, comprising:
a substrate, a plurality of first touch electrodes and a plurality of second touch sub-electrodes disposed on the substrate, wherein the plurality of first touch electrodes each is insulated from the plurality of second touch sub-electrodes each respectively; wherein a quantity of the plurality of first touch electrodes is N and N is an integer larger than 1;
wherein each of the plurality of first touch electrodes extends in a first direction and is arranged apart from each other in a second direction perpendicular to the first direction; and
wherein at least a pair of the first touch electrodes of the plurality of first touch electrodes are electrically connected to each other to form one first touch electrode group; and wherein each first touch electrode in the same first touch electrode group receives a same touch drive signal at a same time;
wherein two or more of the plurality of the second touch sub-electrodes overlaying to the same first touch electrode

Assignees

• Shanghai Tianma Micro Elect Co
• Tianma Micro Electronics Co Ltd

Inventors

• Wang Lihua
• Zhou Xingyao
• Zhang Xianxiang
• Xu Yingying
• Li Xiaoye
• Liu Gang

Classifications

• G06F3/0446

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

• G06F3/0445 Primary

  using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title