Touch screen, touch display panel and touch device

Patent metadata

Field	Value
Publication number	US-2016349901-A1
Application number	US-201615081957-A
Country	US
Kind code	A1
Filing date	Mar 28, 2016
Priority date	May 29, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

The present disclosure discloses a touch screen, a touch display panel and a touch device. The touch screen or the touch display panel includes: a plurality of touch sensing electrodes arranged in an array and insulated from each other; a plurality of touch sensing leads, each of which is electrically connected with one of the touch sensing electrodes. The touch screen or the touch display panel includes a rectangle active touch region, wherein a total number of the touch sensing electrodes within the rectangle active touch region is larger than or equal to 3.175p and is smaller than or equal to 126p 2 , wherein p represents a size of the rectangle active touch region, is in a unit of inch and is a positive integer. The touch screen, the touch display panel or the touch device can improve touch accuracy.

First claim

1 . A touch screen, the touch screen being a self-capacitive touch screen and comprising:
a plurality of touch sensing electrodes arranged in an array and insulated from each other; and a plurality of touch sensing leads, each of which is electrically connected with one of the touch sensing electrodes; and, wherein there is a rectangle active touch region in the touch screen such that a total number of the touch sensing electrodes within the rectangle active touch region is larger than or equal to 3.175p and is smaller than or equal to 126p 2 , wherein p represents a size of the rectangle active touch region, is in a unit of inch and is a positive integer.

2 . The touch screen of claim 1 , wherein, an area of each of the touch sensing electrodes is larger than or equal to 2.56 mm 2 .

3 . The touch screen of claim 1 , wherein, each of the touch sensing electrodes has a rectangle shape and a length and a width thereof are both larger than or equal to 1.6 mm.

4 . The touch screen of claim 1 , wherein, an area of each of the touch sensing electrodes is smaller than or equal to that of a touched region.

5 . The touch screen of claim 1 , wherein, an area of each of the touch sensing electrodes is smaller than or equal to 64 mm 2 .

6 . The touch screen of claim 1 , wherein, each of the touch sensing electrodes has a rectangle shape, and a length and a width thereof are both smaller than or equal to 8 mm.

7 . The touch screen of claim 1 , wherein the touch screen has a rectangle shape, the integrated circuit portion has a strip shape, a long side of the integrated circuit portion is provided parallel to a first side of the touch screen, and wherein
a total number of the touch sensing leads is smaller than or equal to

L
-

L
2

-

8

W

2

d

,

wherein L represents a length of the first side of the touch screen which is located within the active touch display region, W represents a distance from an edge of the active touch display region of the touch screen to the integrated circuit portion, and d represents a distance between two adjacent touch sensing leads.

8 . A touch display panel, the touch display panel being a self-capacitive touch display panel and comprising a display portion and a touch portion, wherein the touch portion comprises:
a plurality of touch sensing electrodes arranged in an array and insulated from each other; and a plurality of touch sensing leads, each of which is electrically connected with one of the touch sensing electrodes; and, wherein the touch display panel comprises a rectangle active touch display region, wherein there is a rectangle active touch region in the touch screen such that a total number of the touch sensing electrodes within the rectangle active touch region is larger than or equal to 3.175p and is smaller than or equal to 126p 2 , wherein p represents a size of the rectangle active touch region, is in a unit of inch and is a positive integer.

9 . The touch display panel of claim 8 , wherein, the touch sensing electrode is reused as a common electrode, a touch signal is inputted into and outputted from the touch sensing electrode during a touch stage, and a display common signal is inputted into the touch sensing electrode during a display stage.

10 . The touch display panel of claim 8 , wherein, an area of each of the touch sensing electrodes is larger than or equal to 2.56 mm 2 .

11 . The touch display panel of claim 8 , wherein, each of the touch sensing electrodes has a rectangle shape, and a length and a width thereof are both larger than or equal to 1.6 mm.

12 . The touch display panel of claim 8 , wherein, an area of each of the touch sensing electrodes is smaller than or equal to 64 mm 2 .

13 . The touch display panel of claim 8 , wherein, each of the touch sensing electrodes has a rectangle shape, and a length and a width thereof are both smaller than or equal to 8 mm.

14 . The touch display panel of claim 8 , wherein, the ratio of the length to the width of the rectangle active touch display region of the touch display panel is 16:9, and hence
a total number of the touch sensing electrodes within the rectangle active touch display region is larger than or equal to 4.32a 2 , where a represents a size of the rectangle active touch display region, is in a unit of inch and is a positive value.

15 . The touch display panel of claim 8 , wherein, the ratio of the length to the width of the rectangle active touch display region of the touch display panel is 16:9, and hence
a total number of the touch sensing electrodes within the rectangle active touch display region is smaller than or equal to 107.67a 2 , where a represents a size of the rectangle active touch display region, is in a unit of inch, and is a positive value.

16 . The touch display panel of claim 8 , wherein, the ratio of the length to the width of the rectangle active touch display region of the touch display panel is 16:10, and hence
a total number of the touch sensing electrodes within the rectangle active touch display region is larger than or equal to 4.52b 2 , where b represents a size of the rectangle active touch display region, is in a unit of inch and is a positive value.

17 . The touch display panel of claim 8 , wherein, the ratio of the length to the width of the rectangle active touch display region of the touch display panel is 16:10, and hence
a total number of the touch sensing electrodes within the rectangle active touch display region is smaller than or equal to 113.24b 2 , where b represents a size of the rectangle active touch display region, is in a unit of inch and is a positive value.

18 . The touch display panel of claim 8 , wherein the touch display panel has a rectangle shape, the integrated circuit portion has a strip shape, a long side of the integrated circuit portion is provide parallel to a first side of the touch display panel, and wherein
a total number of the touch sensing leads is smaller than or equal to

L
-

L
2

-

8

W

2

d

,

where L represents a length of the first side of the touch display panel in the active touch display region, W represents a distance from an edge of the active touch display region of the touch display panel to the integrated circuit portion, and d represents a distance between two adjacent to

Assignees

• Shanghai Tianma Microelectronics Co Ltd
• Tianma Microelectronics Co Ltd

Inventors

• Li Xiaoye
• Lu Feng
• Lan Shaofa

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/044 Primary

  by capacitive means · CPC title

• G06F3/04164

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

• G06F3/0443

  using a single layer of sensing electrodes · CPC title