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A display substrate with touch function, a driving method thereof, and a display device

A technology of display substrate and driving method, applied in static indicators, input/output process of data processing, optics, etc., can solve problems such as signal change, mutual capacitance change, and inability to accurately detect the position touched by a finger.

Active Publication Date: 2018-01-09
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inventors found that when the mutual capacitance touch screen is embedded in the liquid crystal display device, the size of the mutual capacitance will be affected by the deflection of the liquid crystal molecules, that is, when the liquid crystal molecules at a certain position are deflected, the touch driving electrodes and the touch sensing electrodes The dielectric constant of the dielectric between changes, the size of the mutual capacitance will also change, which will cause the signal on the touch sensing electrode to change
Due to the uncertainty of the deflection of liquid crystal molecules, the difference between the touch of the finger on the touch screen and the deflection of the liquid crystal molecules cannot be judged. Therefore, it is easy to fail to accurately detect the position touched by the finger

Method used

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  • A display substrate with touch function, a driving method thereof, and a display device
  • A display substrate with touch function, a driving method thereof, and a display device
  • A display substrate with touch function, a driving method thereof, and a display device

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Embodiment 1

[0041] An embodiment of the present invention provides a method for driving a display substrate with a touch function (hereinafter referred to as a display substrate), which can avoid the influence of liquid crystal molecule deflection on mutual capacitance and improve the accuracy of touch control.

[0042] Specifically, the driving method includes:

[0043] Divide the touch driving electrodes parallel to the gate lines included in the display substrate into N parts, and all parts are arranged in sequence along the direction perpendicular to the gate lines, wherein, N is a positive integer greater than or equal to 2; in the nth part, the touch Before starting, reset the pixels corresponding to the nth part so that the pixels have the same gray scale, where n is a positive integer greater than or equal to 1 and less than or equal to N, so that when the touch time period of the nth part, The deflection states of all liquid crystal molecules corresponding to the nth part are the...

Embodiment 2

[0063] An embodiment of the present invention provides a display substrate with a touch function (hereinafter referred to as a display substrate) driven by the driving method described in Embodiment 1. Specifically, as image 3 As shown, the display substrate includes multiple rows of touch driving electrodes 1 extending in a direction parallel to the gate lines. The touch driving electrodes 1 are divided into N parts, and all parts are arranged in sequence along a direction perpendicular to the gate lines, wherein N It is a positive integer greater than or equal to 2; the touch drive electrode 1 included in each part is connected to a drive line 2, so that before the nth part touch starts, the pixel corresponding to the nth part can be reset, so that the pixel has The same gray scale, wherein, n is a positive integer greater than or equal to 1 and less than or equal to N, so that the deflection states of all liquid crystal molecules corresponding to the nth part are the same, ...

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Abstract

The embodiment of the invention discloses a display substrate with a touch function, a driving method thereof, and a display device, which relate to the field of display technology, can avoid the influence of liquid crystal molecule deflection on mutual capacitance, and improve the accuracy of touch control. The driving method includes: dividing the touch driving electrodes parallel to the gate lines included in the display substrate into N parts, and all the parts are sequentially arranged along a direction perpendicular to the gate lines, wherein N is a positive number greater than or equal to 2. Integer; before the nth partial touch starts, reset the pixels corresponding to the nth part, so that the pixels have the same gray scale, wherein, n is a positive integer greater than or equal to 1 and less than or equal to N.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a display substrate with a touch function, a driving method thereof, and a display device. Background technique [0002] According to the principle, touch screens can be divided into resistive touch screens, self-capacitive touch screens, and mutual-capacitive touch screens. Among them, mutual-capacitive touch screens have higher sensitivity and advantages of multi-touch, and are more and more widely used. [0003] Specifically, the mutual capacitive touch screen includes touch driving electrodes and touch sensing electrodes that are insulated from each other and cross each other, and a mutual capacitance is formed between the touch driving electrodes and the touch sensing electrodes. When a finger touches the touch screen, it will change the size of the mutual capacitance, which will cause the signal on the touch sensing electrode to change. By scanning the touch drivin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G06F3/044
CPCG09G3/36G06F3/0412G09G3/3648G09G2310/061G02F1/13338G06F3/0443G06F3/04184G06F3/0445G06F3/0446G06F3/044G06F3/04166G02F1/136286G02F1/1368G02F2201/123G06F2203/04107G09G3/3607G09G2310/08
Inventor 丁小梁王海生刘英明赵卫杰任涛
Owner BOE TECH GRP CO LTD