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
View PDF13 Cites 38 Cited by
  • 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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Widthaaaaaaaaaa
Login to view more

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap