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Capacitance-type embedded touch screen and display device

A touch screen, capacitive technology, applied in the direction of circuits, electrical components, electric solid devices, etc., can solve problems such as unfavorable production efficiency and increased production costs, improve picture quality and touch accuracy, save production costs, and reduce interaction interference effect

Active Publication Date: 2012-12-26
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • 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, 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

[0018] The specific implementation manners of the capacitive in-cell touch screen and the display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] The film thickness and shape of each layer in the drawings do not reflect the real scale of the array substrate, but are only intended to schematically illustrate the content of the present invention.

[0020] A capacitive in-cell touch screen provided by an embodiment of the present invention includes a TFT array substrate having a common electrode layer, and the common electrode layer includes touch sensing electrodes and touch driving electrodes insulated from each other;

[0021] During the display period, applying a common electrode signal to the touch driving electrodes and the touch sensing electrodes;

[0022] During the touch period, a touch scanning signal is applied to the touch driving electrodes, and the touch sensing elec...

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Abstract

The invention discloses a capacitance-type embedded touch screen and a display device. A common electrode layer which is integrally connected into a TFT (thin film transistor) array substrate is divided to form a touch-control sensing electrode and a touch-control driving electrode which are insulated from each other; and the touch-control driving electrode and the touch-control driving electrode are subjected to time-sharing driving to achieve a touch-control function and a display function. Due to the fact that the touch screen provided by the embodiment of the invention is conducted to change the common electrode structure of the TFT array substrate to realize the touch control function, the touch screen is formed on the basis of the traditional TFT array substrate preparation technique without additionally providing additional techniques, so that the production cost is reduced and the production efficiency is increased. In addition, by adopting the time-sharing driving touch control and display functions, the mutual interference can be further reduced, and thus, the image quality and the touch-control 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): G06F3/044H01L27/12
Inventor 刘红娟董学王海生赵卫杰丁小梁刘英明任涛杨盛际
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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