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Capacitance embedded touch screen, driving method and display device thereof

A touch screen, capacitive technology, used in static indicators, electrical digital data processing, optics, etc., can solve the problems of adverse effects of touch screens, increasing touch sensing electrode Rx resistance, etc.

Active Publication Date: 2013-02-06
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual implementation, the method of making each touch sensing electrode Rx into a grid structure can reduce the facing area of ​​the two, but it will inevitably increase the resistance of the touch sensing electrode Rx. The touch sensing electrode Rx will also have many adverse effects on the entire touch screen

Method used

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  • Capacitance embedded touch screen, driving method and display device thereof
  • Capacitance embedded touch screen, driving method and display device thereof
  • Capacitance embedded touch screen, driving method and display device thereof

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Embodiment Construction

[0027] The specific implementation manners of the capacitive in-cell touch screen provided by the embodiments of the present invention, its driving method and the display device will be described in detail below with reference to the accompanying drawings.

[0028] The thickness and shape of each layer of thin film in the drawings do not reflect the real ratio of the array substrate and the color filter substrate, and the purpose is only to illustrate the content of the present invention.

[0029] A capacitive embedded touch screen provided by an embodiment of the present invention, such as figure 1 As shown, it specifically includes: a color filter substrate 1, a TFT array substrate 2 with a common electrode layer, and a liquid crystal layer 3 located between the color filter substrate 1 and the TFT array substrate 2; A plurality of pixel units 4;

[0030] The common electrode layer is divided into touch driving electrodes 5 and common electrodes 6 extending along the row di...

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Abstract

The invention discloses a capacitance embedded touch screen, a driving method of the capacitance embedded touch screen and a display device of the capacitance embedded touch screen. A touch sensing electrode is arranged on a color film substrate, a wholly connected common electrode layer in the TFT (thin film transistor) array substrate is divided into a touch driving electrode and a common electrode, the touch driving electrode adopts a time-sharing driving mode to achieve the display and touch functions, the time-sharing driving mode helps to reduce the mutual interference between display and touch and increase the picture quality and the touch accuracy; an overlapping area of the touch sensing electrode and the touch driving electrode indents to from an indentation part to reduce the facing area between the touch sensing electrode and the touch driving electrode, so as to reduce the sensing capacitance formed at the overlapping area; in order to solve the problem of the increase of resistance of the touch sensing electrode because of the reduction of the area of the indentation part, the area at the overlapping area between the touch sensing electrode and the common electrode is expanded outwards to form an expansion part to reduce the resistance of the touch sensing electrode, thereby enabling the resistance of the entire touch sensing electrode to meet the requirement of the touch screen.

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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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1343G02F1/1333G02F1/133G06F3/044G09G3/36
Inventor 杨盛际赵卫杰王海生
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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