Capacitive embedded touch screen, as well as touch location method and display device thereof

A touch screen and capacitive technology, applied in electrical digital data processing, optics, instruments, etc., can solve the problems of display drive signal interference, reduce the aperture ratio of TFT substrate, and the TFT array substrate cannot work normally, etc.

Inactive Publication Date: 2012-11-07
BOE TECH GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the above-mentioned capacitive embedded touch screen needs to add additional touch scanning lines, touch sensing lines and driving circuits on the existing TFT array substrate, which will reduce the aperture ratio of the TFT substrate, thereby affecting the TFT array. Transparency of the substrate
[0005] Moreover, the two layers of ITO electrodes added in the above-mentioned capacitive in-cell touch screen will overlap with the original data lines and gate lines in the TFT array substrate in the vertical direction. Therefore, when the ITO electrodes transmit touch scanning signals, It will cause serious signal interference to the original display driving signal in the TFT array substrate, which may cause the TFT array substrate to malfunction

Method used

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  • Capacitive embedded touch screen, as well as touch location method and display device thereof
  • Capacitive embedded touch screen, as well as touch location method and display device thereof
  • Capacitive embedded touch screen, as well as touch location method and display device thereof

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Embodiment Construction

[0022] The specific implementation manners of the capacitive in-cell touch screen, the touch positioning method and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] The film thicknesses and area sizes and shapes of the various layers in the drawings do not reflect the true proportions of the array substrate or the color filter substrate, but are only intended to schematically illustrate the content of the present invention.

[0024] A capacitive embedded touch screen provided by an embodiment of the present invention, such as figure 1 As shown, it includes: a TFT array substrate with data lines and gate lines;

[0025] Setting at least one gate line as a touch scanning line and at least one data line as a touch sensing line; or, setting at least one data line as a touch scanning line and at least one gate line as a touch sensing line; in,

[0026] The touch scan lin...

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PUM

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Abstract

The invention discloses a capacitive embedded touch screen, as well as a touch location method and a display device thereof. At least one grid line in a TFT (Thin Film Transistor) array substrate is used as a touch control scanning line, and at least one data line is set as a touch control sensing line; or, conversely, at least one data line in the TFT array substrate is used as the touch control scanning line, and the at least one grid line is set as the touch control sensing line so as to realize the functions of the touch screen. Since the grid line and the data line in the existing TFT array substrate are respectively used as the touch control scanning line and the touch control sensing line, and relative to the embedded touch screen in the prior art, additional wiring is not needed, the aperture opening ratio of the TFT array substrate cannot be reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a capacitive embedded touch screen, a touch positioning method thereof and a display device. Background technique [0002] With the rapid development of display technology, touch screen panels (Touch Screen Panels) have gradually spread throughout people's lives. Currently, touch screens can be classified into resistive, capacitive, infrared and surface acoustic wave types according to their working principles. Among them, the capacitive touch screen is sought after by the industry as a new favorite due to its unique touch principle, high sensitivity, long life, high light transmittance and other advantages. [0003] At present, the existing capacitive in-cell touch screen is realized by directly adding touch scanning lines and touch sensing lines on the existing TFT (Thin Film Transistor, Thin Film Field Effect Transistor) array substrate, that is, in Two layers of ITO (Indiu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG02F2001/133334G06F3/044G06F2203/04107G06F3/0416G06F3/0412G02F1/13338G06F3/04166G06F3/0446G02F1/133334G06F3/041
Inventor 赵家阳
Owner BOE TECH GRP CO LTD
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