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Self-adjustable light perception touch control circuit and displaying device

A self-adjusting and tactile technology, applied in the direction of electrical digital data processing, instrumentation, and input/output process of data processing, etc., can solve problems such as misjudgment, achieve the effect of increasing the range of grid voltage difference, improving sensitivity and accuracy

Active Publication Date: 2012-06-13
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Therefore, based on the characteristic difference of each thin film transistor, the judgment of the light sensing element on the touch may be misjudged.

Method used

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  • Self-adjustable light perception touch control circuit and displaying device
  • Self-adjustable light perception touch control circuit and displaying device
  • Self-adjustable light perception touch control circuit and displaying device

Examples

Experimental program
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Embodiment Construction

[0064] Please refer to figure 2 , figure 2 It is a schematic circuit diagram of the first embodiment of the present invention. Such as figure 2 As shown, the self-adjusting light-sensing touch circuit 100 of the first embodiment of the present invention includes a light-sensing element 10 , a variable capacitor 20 and a switch element 30 .

[0065] The light sensing element 10 can be used to sense a touch state corresponding to a user's operation. The light sensing element 10 can be, for example, a photoelectric thin film transistor. The light sensing element 10 can receive the first control signal Gn+1, and the light sensing element 10 can be enabled by the level of the first control signal Gn+1. For example, the high-level first control signal Gn+1 can turn on the light sensing element 10 . The light sensing element 10 has a first terminal (eg, gate) 13 , a second terminal (eg, drain) 15 and a third terminal (eg, source) 17 . The first terminal 13 receives the first...

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Abstract

The invention discloses a self-adjustable light perception touch control circuit and a displaying device. The self-adjustable light perception touch control circuit comprises a light sensing element capable of sensing a touch circuit state, receiving a first control signal and enabling the light sensing element via the first control signal; a variable capacitor coupled with the light sensing element and changing the capacitance value according to the voltage difference applied to the two ends; and a switch element coupled with the variable capacitor, receiving a second control signal and enabling the switch element via the second control signal. Therefore, the grid voltage difference range of the light sensing element can be increased, and accordingly, the sensitivity and accuracy of the light sensing element are improved.

Description

technical field [0001] The present invention relates to a touch circuit and a display device, and in particular to a self-adjusting light-sensing touch circuit and a display device. Background technique [0002] At present, touch panel technology generally has the following types: resistive, capacitive, optical, electromagnetic, ultrasonic, and embedded LCD (LCD In-Cell, which can be divided into three types: resistive, capacitive, and optical. kind). In the display of the embedded light-sensitive touch panel, the difference in leakage current caused by different light intensities is used as the condition for whether the light-sensing element in the embedded light-sensitive touch panel is turned on, and then the embedded light-sensitive touch panel is judged. Check whether the control panel is touched. [0003] For example, the photosensitive element includes a thin film transistor and the like. The thin film transistor leakage current of the light sensing element under f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042
CPCG06F3/0416G06F3/042
Inventor 钟岳宏徐雅玲
Owner AU OPTRONICS CORP
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