Capacitance-type built-in touch screen and display device

A touch screen, capacitive technology, applied in the field of capacitive embedded touch screen and display devices, can solve the problems of increased production cost, high cost, complex structure of TFT array substrate, etc., to save production cost, improve production efficiency, and improve picture quality. and touch accuracy

Active Publication Date: 2013-03-06
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The structural design of the above-mentioned capacitive embedded touch screen needs to add a new film layer on the existing TFT array substrate, which makes the structure of the TFT array substrate relatively complicated, and also needs to add a new process when manufact

Method used

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  • Capacitance-type built-in touch screen and display device
  • Capacitance-type built-in touch screen and display device
  • Capacitance-type built-in touch screen and display device

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Embodiment Construction

[0024] At present, liquid crystal display technologies capable of realizing wide viewing angles mainly include In-Plane Switch (IPS, In-Plane Switch) technology and Advanced Super Dimension Switch (ADS, Advanced Super Dimension Switch) technology; among them, ADS technology passes through slits in the same plane. The electric field generated by the edge of the electrode and the electric field generated between the slit electrode layer and the plate electrode layer form a multi-dimensional electric field, so that all oriented liquid crystal molecules between the slit electrodes in the liquid crystal cell and directly above the electrodes can be rotated, thereby improving the operation of the liquid crystal. efficiency and increased light transmission efficiency. Advanced ultra-dimensional field conversion technology can improve the picture quality of TFT-LCD products, with high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low co...

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Abstract

The invention discloses a capacitance-type built-in touch screen and a display device. A touch sensing electrode is arranged on a colorful film substrate; a whole-surface connection public electrode layer in a TFT (thin film transistor) array substrate is divided into strips to be used as touch driving electrodes; and metal driving electrodes directly and electrically connected with each corresponding touch driving electrode are arranged so as to lower the resistance value of the touch driving electrodes. Because the touch screen provided by the embodiment of the invention is characterized in that the public electrode layer structure of the TFT array substrate is changed to form the touch driving electrodes, no additional technologies need to be added on the basis of the traditional TFT array substrate preparation technology, the production cost is saved, and the production efficiency is improved. In addition, because the functions of time-sharing touch and display are adopted, a display driving chip and a touch driving chip can be integrated into a whole to further lower the production cost, the mutual interference between display and touch can be lowered by time-sharing driving, and the picture quality and the touch accuracy can be improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a capacitive embedded touch screen 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. At present, touch screens can be divided into three types according to their structure: Add on Mode Touch Panel, On Cell Touch Panel, and In Cell Touch Panel. Among them, the plug-in touch screen is produced separately from the touch screen and Liquid Crystal Display (LCD), and then bonded together to form a touch-enabled LCD screen. The plug-in touch screen has high production costs and low light transmittance. Low, thick modules and other shortcomings. The embedded touch screen embeds the touch electrodes of the touch screen inside the liquid crystal display, which can reduce the overall thickness of the module and greatly reduce the production cost o...

Claims

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Application Information

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IPC IPC(8): G06F3/044G02F1/1333
CPCG06F3/0412G06F3/044G06F3/0416G06F3/04184G06F3/0445G06F3/0446G06F3/04166G09G3/3648
Inventor 王海生董学丁小梁刘红娟杨盛际赵卫杰刘英明任涛
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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