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Capacitance-type built-in touch screen, driving method thereof and display device

A touch screen, capacitive technology, used in static indicators, electrical digital data processing, optics, etc., to improve transmission efficiency, reduce production costs, and reduce mutual interference.

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

At present, there is no design of capacitive embedded touch screen based on double gate structure.

Method used

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  • Capacitance-type built-in touch screen, driving method thereof and display device
  • Capacitance-type built-in touch screen, driving method thereof and display device
  • Capacitance-type built-in touch screen, driving method thereof and display device

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Embodiment Construction

[0026] 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, a driving method thereof and a display device. A touch induction 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; touch driving signal lines are arranged in a display area by a double-gate structure, thereby being favorable for the narrow frame design of the touch screen relative to that the touch driving signal lines are arranged in the non-display area of the touch screen; at least one touch driving signal line is electrically connected with one touch driving electrode; and multiple touch driving signal lines simultaneously provide a driving electric signal to one touch driving electrode so as to furthest improve the transmission efficiency of the driving electric signal and reduce the time delay of the driving electric signal. In addition, because the touch stage and the display stage adopt a time-sharing driving mode, a display driving chip and a touch driving chip can be integrated into a whole, and the production cost is lowered. According to the time-sharing driving, mutual interference between display and touch can be lowered, 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, a driving method thereof 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 re...

Claims

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Application Information

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IPC IPC(8): G06F3/044G09G3/20G02F1/1333G02F1/1343G02F1/1362G02F1/133
CPCG02F1/13338G02F2001/134318G06F3/0412G06F3/044G02F1/134336G06F3/0443G02F1/134318
Inventor 杨盛际董学王海生
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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