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TFT display touch device

A touch device, display technology, applied in static indicators, instruments, computing and other directions, can solve problems such as increasing cost and reducing product yield, and achieve the effect of improving yield and reducing cost

Inactive Publication Date: 2015-06-10
RICH IP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such practices will reduce product yield and increase costs

Method used

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Embodiment Construction

[0041] In order to further understand the structure, features and purpose of the present invention, it will be described in detail in conjunction with the accompanying drawings and preferred specific embodiments.

[0042] The principle of the present invention will be described first. Please refer to Figure 1a , which is a schematic diagram of driving a signal connection line with a composite voltage source for touch detection. exist Figure 1a Among them, a signal connection line 10 (a gate connection line or a source connection line of a TFT array of a TFT display, and the TFT display can be a TFT LCD or TFT OLED display) is connected to a voltage source V S is coupled to a touch detection unit 20, wherein the voltage source V S It is a composite voltage source composed of a DC voltage and an AC voltage. For an example waveform, please refer to Figure 1b , which has a DC voltage V DC and an AC voltage V AC (although in Figure 1b The AC voltage in V AC is presented a...

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Abstract

A TFT display touch device, including: a TFT array, including: a plurality of thin film transistors, each having a source, a gate, and a drain, the drain being coupled with a capacitor; a plurality of gate connecting lines; and a plurality of source connecting lines; and a control unit, having a gate control unit and a source control unit, wherein, at least one of the gate control unit and the source control unit provides a hybrid voltage generation function, and at least one of the gate control unit and the source control unit provides a touch detection function, wherein the hybrid voltage generation function is used to provide a hybrid voltage source having a DC voltage component and an AC voltage component.

Description

technical field [0001] The present invention relates to a touch device, in particular to a TFT (thin film transistor; thin film transistor) display touch device. Background technique [0002] A general touch device is a touch module superimposed on a screen. However, this type of touch device has a relatively large thickness, which cannot meet the light and thin market demand, and its cost is also relatively high. [0003] To solve this problem, there are known designs that integrate the screen and the same material layer of the touch module. However, the reduced thickness of the touch device still cannot meet the requirements of some high-end products. [0004] It is known that there are attempts to realize the touch function on the display, and the general method is to add additional electrodes on the display circuit layer to form a touch capacitor. However, such practices will reduce product yield and increase costs. [0005] In order to solve the aforementioned probl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333G06F3/044
CPCG02F1/13338G02F1/13454G06F3/044G09G3/3677G09G3/3688G06F3/0446G06F3/04184G06F3/04166
Inventor 陈汉昌杜彦宏贾丛林张仁杰邬志文
Owner RICH IP TECH