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Touch sensor, embedded touch LCD panel and LCD

A liquid crystal display panel and touch sensor technology, applied in the fields of touch sensors, in-cell touch liquid crystal display panels, and liquid crystal displays, can solve the problem of affecting the detection of touch screen sensing signals, the inability of accurate finger touch on the liquid crystal display panel, and the inability to respond to finger touches. Feedback and other problems to achieve the effect of eliminating static electricity, good display effect and uniform light transmittance distribution

Active Publication Date: 2013-09-11
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of noise affects the detection of the touch screen sensing signal, that is, the liquid crystal display panel cannot accurately detect the user's finger touch, and thus cannot respond to the finger touch in a timely manner.

Method used

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  • Touch sensor, embedded touch LCD panel and LCD
  • Touch sensor, embedded touch LCD panel and LCD
  • Touch sensor, embedded touch LCD panel and LCD

Examples

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Embodiment Construction

[0042] Aiming at the problems in the prior art, the inventor provides a touch sensor, an embedded touch liquid crystal display panel, and a liquid crystal display after research. This technical solution makes the liquid crystal display panel with an embedded mutual capacitance touch screen have better light transmittance and higher screen brightness; it reduces the parasitic between the touch sensor and the other electrodes in the liquid crystal panel except the driving electrode and the sensing electrode. At the same time, it ensures a sufficiently large mutual capacitance to make the touch sensing signal easy to detect, and also eliminates the electrostatic influence of the liquid crystal display panel caused by finger touch.

[0043] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0044...

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Abstract

The invention discloses a touch sensor, an embedded touch LCD panel and an LCD. The touch sensor includes a plurality of drive electrodes and a plurality of induction electrodes crossed with the drive electrodes, wherein mutual capacitance is formed between the drive electrodes and the induction electrodes; in a matrix structure, a plurality of virtual electrodes are arranged at the residual zone except the drive electrodes and the induction electrodes; and the virtual electrodes, the drive electrodes and the induction electrodes are positioned on the same layer. The LCD panel provided with an embedded touch screen, provided by the technical scheme, has better transmission of light and higher screen luminance, guarantees enough mutual capacitance to enable touch induction signals to be easily detected while reducing stray capacitance among electrodes except the drive electrodes and the induction electrodes in the touch sensor and the LCD panel, and eliminates electrostatic influence of the LCD panel due to finger touch.

Description

technical field [0001] The invention relates to the technical field of touch liquid crystal displays, in particular to a touch sensor, an embedded touch liquid crystal display panel, and a liquid crystal display. Background technique [0002] Nowadays, touch screens are increasingly used in various electronic products, such as mobile phones, tablet computers, music players, and the like. As a user interface for interactive operation, the touch screen includes resistive, capacitive, surface acoustic wave, infrared and so on. In touch screen technology, compared with resistive touch screen, capacitive touch screen has the advantages of long life, high light transmittance, and can support multi-point touch. Mutual capacitive touch sensing is an emerging technology in capacitive touch screen. It is sensitive to noise and It has a good suppression effect on ground parasitic capacitance and can realize multi-touch, so it has become the main direction of various capacitive touch s...

Claims

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Application Information

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IPC IPC(8): G06F3/044G02F1/133
CPCG06F3/0412G06F2203/04111G06F3/0443G06F3/0446G06F3/0448G02F1/13338G06F3/044H01B1/02
Inventor 姚绮君王丽花
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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