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Embedded type touch screen

An in-cell touch screen, touch-driven technology, applied in instruments, electrical digital data processing, electrical components, etc., can solve the problems of high production cost, low light transmittance, and module thickness.

Active Publication Date: 2012-12-19
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing plug-in touch display screens have disadvantages such as complex structure, high production cost, low light transmittance, thick module, etc.

Method used

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  • Embedded type touch screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] An embodiment of the present invention provides an in-cell touch screen, which is used to realize an in-cell touch screen with simple structure and low cost.

[0026] Capacitive touch screens include: surface capacitive touch screens and projected capacitive touch screens. The touch screen provided by the embodiment of the present invention is a projected capacitive touch screen.

[0027] The working principle of the projected capacitive touch screen is: when the touch screen is touched, the size of the electrostatic field emitted by the electrodes of the touch screen is changed, and the detection device realizes the positioning of the touch point by detecting the change of the electrostatic field. Specifically, the electrodes of the touch screen in the in-cell touch screen include a plurality of touch driving lines and a plurality of touch sensing lines, a high-frequency voltage is applied to the touch driving lines, a constant voltage is applied to the touch sensing l...

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PUM

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Abstract

The invention discloses an embedded type touch screen which has the characteristics of simple structure and lower cost. The embedded type touch screen comprises a first substrate and a second substrate which are arranged oppositely, a plurality of transversely-arranged touch driving lines, a plurality of longitudinally-arranged touch induction lines, and a plurality of touch control scanning TFTs (thin film transistor), wherein a plurality of gird lines are transversely formed on the first substrate; the grid of each touch control scanning TFT is connected with one grid line; and the grid line is only connected with the grid of one touch control scanning TFT; the source of each touch control scanning TFT is connected with a touch driving circuit; the drain of each touch control scanning TFT is connected with one touch driving line; and the number of the touch control scanning TFTs is not less than that of the grid lines and not more than that of the touch driving lines.

Description

technical field [0001] The invention relates to the technical field of touch display, in particular to an embedded touch screen. Background technique [0002] As an input medium, a touch panel forms a touch display screen together with a display screen, and the touch display screen has gradually become the mainstream in the display field. [0003] Currently, the most widely used touch screens are Add on Touch Panel which is hung outside the display screen and In cell Touch Panel which is embedded in the display screen. The external touch screen display is produced separately from the touch screen, and then bonded together to form a touch display with touch and display functions. [0004] With the continuous improvement of optical and electrical characteristics required by flat panel displays, and consumer demand for thinner flat panel displays, high performance, low cost, ultra-thin Touch display has gradually become the main goal pursued by major manufacturers. The exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/0412G06F3/044H01L27/1255G06F3/0443G06F3/0446
Inventor 王海生董学李成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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