Touch panel, touch point detection method, and display device

Patent metadata

Field	Value
Publication number	US-2017192588-A1
Application number	US-201615258507-A
Country	US
Kind code	A1
Filing date	Sep 7, 2016
Priority date	Jan 4, 2016
Publication date	Jul 6, 2017
Grant date	—

Abstract

The present disclosure relates to a touch panel, a touch point detection method and a display device. The touch panel includes a base substrate, and touch electrodes arranged on the base substrate. The touch electrodes include first electrodes, second electrodes and third electrodes, and electrode lines are shared by a plurality of corresponding touch electrodes.

First claim

What is claimed is:

1 . A touch panel, comprising a base substrate, wherein
an upper touch region and a lower touch region are arranged on the base substrate, m*n touch sub-regions are arranged in an array form at each of the upper touch region and the lower touch region, where m represents the number of rows of the touch sub-regions, and n represents the number of columns of the touch sub-regions; a first electrode is arranged at each touch sub-region, and among the first electrodes in an identical column, an identical electrode line is shared by each first electrode at the upper touch region and a corresponding first electrode at the lower touch region; a plurality of second electrodes is arranged at each of the upper touch region and the lower touch region, each second electrode corresponds to m touch sub-regions in a column where the second electrode is located, each second electrode is connected to an electrode line, and each second electrode is an annular electrode surrounding m first electrodes at m touch sub-regions in a column where the second electrode is located, or a strip electrode located at an identical side relative to the m first electrodes at m touch sub-regions in the column where the second electrode is located; a plurality of third electrodes is arranged at each of the upper touch region and the lower touch region, and each third electrode corresponds to one of the touch sub-regions, an identical electrode line is shared by each third electrode and at least one third electrode in an identical row, and each third electrode is an annular electrode surrounding the first electrode at a touch sub-region corresponding to the third electrode, or a strip electrode located at an identical side relative to the first electrode at a touch sub-region corresponding to the third electrode; and the second electrodes and the third electrodes are arranged alternately on the base substrate in a row direction, the second electrodes at the upper touch region and the corresponding third electrodes at the lower touch region are arranged in an identical column, and the third electrodes at the upper touch region and the corresponding second electrodes at the lower touch region are arranged in an identical column, wherein in the case that each second electrode and each third electrode on the base substrate are both strip electrodes, the second electrodes and the third electrodes at two adjacent touch sub-regions in the row direction are arranged at an identical side relative to the corresponding first electrodes at the two adjacent touch sub-regions.

2 . The touch panel according to claim 1 , wherein the first electrodes, the second electrodes and the third electrodes are arranged at an identical layer on the base substrate.

3 . The touch panel according to claim 1 , wherein the first electrodes, the second electrodes and the third electrodes are arranged at at least two layers on the base substrate.

4 . The touch panel according to claim 1 , wherein an identical electrode line is shared by the third electrodes at the touch sub-regions in each row.

5 . The touch panel according to claim 1 , wherein the first electrodes in each column on the base substrate are connected to the corresponding electrode lines in an identical manner.

6 . The touch panel according to claim 5 , wherein an identical electrode line is shared by each first electrode at the upper touch region in an x th row and a corresponding first electrode at the lower touch region in an x th row and in an identical column, where x is an integer greater than or equal to 1 and smaller than or equal to m.

7 . A touch point detection method for use in the touch panel according to claim 1 , comprising steps of:
in the case that the touch panel is being touched by a user, determining whether or not a detection value of each electrode on the touch panel is changed; and in the case that the detection values of a first electrode and a third electrode at a third touch sub-region and a second electrode at a touch sub-region adjacent to the third touch sub-region are changed, determining the third touch sub-region as a touch point, the third touch sub-region being a touch sub-region where the third electrode is located; or in the case that the detection values of a first electrode and a second electrode at a second touch sub-region and a third electrode at a touch sub-region adjacent to the second touch sub-region are changed, determining the second touch sub-region as the touch point, the second touch sub-region being a touch sub-region where the second electrode is located.

8 . A touch point detection method for use in the touch panel according to claim 1 , comprising steps of:
in the case that the touch panel is being touched by a user, determining whether or not a detection value of each electrode on the touch panel is changed; in the case that the detection values of a first electrode and a third electrode at a third touch sub-region and a second electrode at a touch sub-region adjacent to the third touch sub-region are changed, determining the third touch sub-region as a touch point, the third touch sub-region being a touch sub-region where the third electrode is located; and in the case that the detection values of a first electrode and a second electrode at a second touch sub-region and a third electrode at a touch sub-region adjacent to the second touch sub-region are changed, determining the second touch sub-region as the touch point, the second touch sub-region being a touch sub-region where the second electrode is located.

9 . A display device, comprising the touch panel according to claim 1 .

10 . The display device according to claim 9 , wherein the first electrodes, the second electrodes and the third electrodes are arranged at an identical layer on the base substrate.

11 . The display device according to claim 9 , wherein the first electrodes, the second electrodes and the third electrodes are arranged at at least two layers on the base substrate.

12 . The display device according to claim 9 , wherein an identical electrode line is shared by the third electrodes at the touch sub-regions in each row.

13 . The display device according to claim 9 , wherein the first electrodes in each column on the base substrate are connected to the corresponding electrode lines in an identical manner.

14 . The display device according to claim 13 , wherein an identical electrode line is shared by each first electrode at the upper touch region in an x th row and a corresponding first electrode at the lower touch region in an x th row and in an identical column, where x is an integer greater than or equal to 1 and smaller than or equal to m.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Zou Xiangxiang

Classifications

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/044

  by capacitive means · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title