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Touch control device and touch control method thereof

A touch device and touch area technology, applied in the field of capacitive touch devices, can solve the problem of low sensitivity of the touch sensing mechanism, inability to accurately judge whether the touch panel is touched or not, and the touch sensing circuit is wrong. The problem of judging is equal to achieve the effect of improving the sensing sensitivity

Inactive Publication Date: 2013-06-12
AU OPTRONICS CORP
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the sensitivity of the touch sensing mechanism using this method is low. If a touch method with a small contact area such as a stylus is used, the change in capacitance is smaller than that of a finger touch, which will make the touch sense The test circuit may produce misjudgment and cannot accurately determine whether the touch panel is touched

Method used

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  • Touch control device and touch control method thereof
  • Touch control device and touch control method thereof
  • Touch control device and touch control method thereof

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Embodiment Construction

[0038] In order to improve the sensitivity of the capacitive touch panel, in the embodiment of the present invention, the resonance principle of the inductance and capacitance circuit is used to detect the touch points.

[0039] figure 1 It is a schematic diagram of a touch device according to an embodiment of the present invention. Please refer to figure 1 , in this embodiment, the touch device 100 includes a touch panel 110 , a signal generation unit 120 , a detection unit 130 and an inductor 140 . The touch panel 110 has a plurality of touch areas TA_11˜TA_mn, wherein m and n are positive integers, which are determined according to the resolution requirement of the touch panel 110 . The signal generating unit 120 is used for generating the driving signal s_d. The inductor 140 is coupled between the touch panel 110 and the signal generating unit 120 to transmit the driving signal s_d to the touch areas TA_11˜TA_mn.

[0040] The detection unit 130 is coupled to the touch ...

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PUM

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Abstract

The invention discloses a touch control device and a touch control method thereof. The touch control device comprises a touch control panel, a signal generating unit, an inductor and a detection unit. The touch control panel comprises a plurality of touch control areas. The signal generating unit is used for generating driving signals. The inductor is coupled between the touch control panel and the signal generating unit to send the driving signals to the touch control areas. The detection unit is coupled with the touch control panel and the signal generating unit to receive the plurality of touch control signals output by the touch control areas, calculate the capacitance change of the touch control areas according to the output sequence of the driving signals and the touch control signals and detect touch control points of the touch control panel. The frequency of the driving signals is identical with the resonant frequency of reference capacitance of the touch control panel and inductance of the inductor. The sensing sensitivity of the touch control device can be improved.

Description

technical field [0001] The present invention relates to a touch device, and in particular to a capacitive touch device. Background technique [0002] In recent years, with the rapid development and progress of wireless mobile communications and information appliances, many information products have been replaced by traditional Input devices such as keyboards or mice are transformed into using touch panels (Touch Panel) as input devices. Wherein, since the touch detection effect of the capacitive touch panel is relatively good, a large number of touch technologies related to the capacitive touch panel emerge as the times require. [0003] In the traditional touch sensing mechanism, a general touch sensing circuit (sensor IC) usually counts the charge and discharge times of the sensing capacitors with different capacitance values ​​to determine whether the corresponding touch area is touched. For example, the touch sensing circuit can set a threshold value for the charge and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/04166G06F3/0446G06F3/044
Inventor 周信国许育民郑咏泽
Owner AU OPTRONICS CORP
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