Active touch control panel display

A flat-panel display and touch technology, applied in the direction of instruments, electrical digital data processing, input/output process of data processing, etc., can solve the problem of small volume resistance

Inactive Publication Date: 2008-02-13
INFERPOINT SYST SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For active flat panel displays, the row scan electrodes and column signal electrodes are all metal electrode lines, and the volume resistance value is very small, so it is not suitable to use the method of 2005101244714 patent

Method used

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Examples

Experimental program
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Embodiment Construction

[0023] One of the embodiments of the present invention is shown in FIG. 1 : a touch-sensitive TFT-LCD 100 that time-division multiplexes the scanning electrode lines on the glass of the TFT array substrate. The TFT-LCD 100 is composed of a liquid crystal display 110 , display driving circuits 120 and 130 , a touch detection circuit 140 , a touch excitation source 150 , and a control system 160 . There are N row scanning electrode lines 111 and M column signal electrode lines 112 on the TFT array substrate glass of the liquid crystal display 110 , and the N row scanning electrode lines 111 have leads from both sides of the substrate glass. One end of the N row scanning electrode lines 111 of the liquid crystal display 110 is connected to the display driving circuit 120; The other end is connected to the touch detection circuit 140 . The electrical signal output to the display screen is divided into two frames of display and touch. In the display frame, the touch excitation sou...

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PUM

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Abstract

The present invention relates to a touch control flat panel display, specifically an active touch control flat panel display. A line scanning electrode and a column signal electrode of the active flat panel display are metallic electrode wires with little resistance. Touch control signals cannot be input through only one electrode of the display. And the discrepancy between the touch control signals of the two ends of the electrode can no not be detected so as to locate the position of the touch control object on the touch control detecting electrode. The present invention uses part of the electrode wire of TFT array glass substrate as a touch control electrode and an electrode parallel with the touch control electrode on the glass substrate as a touch control exciting electrode. When the touch control object touches the display, the touch control detecting circuit detects the touch control signals and locates the position of the touch control object on the detecting electrode. The present invention is intended to provide an active touch control flat panel display and locate the position of the touch control object on the touch control electrode through scrollbars.

Description

technical field [0001] The invention relates to a touch panel display, in particular to an active touch panel display. Background technique [0002] At present, flat-panel displays with touch functions are composed of display screens, display drivers, touch screens, touch signal detectors, backlights and other components. Touch screens include resistive, capacitive, electromagnetic, Ultrasonic type and photoelectric type, etc., the display screens include TN / STN liquid crystal display, TFT liquid crystal display, OLED display, PDP display, carbon nanotube display, etc. A flat panel display with a touch screen laminates a separate touch screen and a display screen, detects the plane position of a touch point through the display screen, and then makes the cursor on the display screen follow the touch point. The layering of the touch screen and the display screen makes the touch panel display thicker and heavier and increases the cost; when the touch screen is placed in front ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
Inventor 陈其良
Owner INFERPOINT SYST SHENZHEN
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