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Capacitance type embedded touch screen and display device

A touch screen and capacitive technology, applied in the direction of electrical digital data processing, instruments, data processing input/output process, etc., can solve the problems of increased production cost and unfavorable production efficiency, so as to save production cost, improve picture quality, reduce The effect of mutual interference

Active Publication Date: 2013-04-17
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Abstract
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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, resulting in the need to add a new process when manufacturing the TFT array substrate, which increases the production cost and is not conducive to improving production efficiency.

Method used

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  • Capacitance type embedded touch screen and display device
  • Capacitance type embedded touch screen and display device
  • Capacitance type embedded touch screen and display device

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Embodiment Construction

[0021] At present, the liquid crystal display technologies that can realize wide viewing angles mainly include In-Plane Switch (IPS, In-PlaneSwitch) technology and Advanced Super Dimension Switch (ADS, Advanced Super Dimension Switch) technology; among them, ADS technology uses slit electrodes in the same plane The electric field generated by the edge 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 working efficiency of the liquid crystal. And increase the light transmission efficiency. Advanced ultra-dimensional field conversion technology can improve the picture quality of TFT-LCD products, and has the advantages of high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low...

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Abstract

The invention discloses a capacitance type embedded touch screen and display device. A public electrode layer connected in a whole-face mode in a thin film transistor (TFT) array substrate is cut to form a touch induction electrode and a touch drivng electrode, and time-sharing driving is performed on the touch drivng electrode and the touch induction electrode so as to achieve a touch function and a display function. Due to the fact that the public electrode layer of the TFT array substrate is modified to achieve the touch function, the touch screen can be manufactured without adding an extra process on the basis of an existing preparation process, and production cost is reduced. Besides, a first metal driving electrode and / or a first metal induction electrode are / is arranged above a data signal line, and the problem that signals loaded on the data signal line are transmitted to a horizontal electric field above the TFT array substrate through subdivided gaps so that normal display of liquid crystals is influenced, a black matrix of a color film substrate located above the data signal line is too thin and cannot shade the liquid crystals in abnormal display, so that touch screen display abnormality is caused is solved.

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 InCell 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. , The module is thicker 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 co...

Claims

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Application Information

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IPC IPC(8): G06F3/044
CPCG06F3/0412G06F3/0443G06F2203/04103
Inventor 王海生董学刘英明
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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