Touch sensor, built-in touch LCD panel, liquid crystal display

A liquid crystal display panel and touch sensor technology, applied in static indicators, instruments, calculations, etc., can solve the problems affecting the detection of touch screen induction signals, the inability to respond to finger touch feedback, and the inability of accurate finger touch on the liquid crystal display panel, etc., to eliminate Electrostatic influence, good display effect, uniform light transmittance distribution

Active Publication Date: 2018-01-19
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, built-in touch LCD panel, liquid crystal display
  • Touch sensor, built-in touch LCD panel, liquid crystal display
  • Touch sensor, built-in touch LCD panel, liquid crystal display

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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

A touch sensor, an embedded touch liquid crystal display panel, and a liquid crystal display, wherein the touch sensor includes a plurality of driving electrodes and a plurality of sensing electrodes intersecting with the plurality of driving electrodes, and the gap between the driving electrodes and the sensing electrodes is forming a mutual capacitance; in the matrix structure, a plurality of dummy electrodes are provided in the remaining area except the driving electrodes and the sensing electrodes, and the dummy electrodes, the driving electrodes and the sensing electrodes are located in the same layer . The liquid crystal display panel with an embedded touch screen provided by this technical solution has better light transmission and higher screen brightness; it reduces the parasitic capacitance 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, a sufficiently large mutual capacitance is ensured to make the touch sensing signal easy to detect, and also eliminates the electrostatic influence of the liquid crystal display 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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Patent Type & Authority Patents(China)
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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