A detection method of a capacitive three-dimensional detection module

A capacitive and capacitive touch technology, applied in electrical digital data processing, data processing input/output process, instruments, etc., can solve the problems of complex detection methods and complex hardware, so as to improve detection efficiency and reduce Hardware loss, reducing the effect of mutual interference

Active Publication Date: 2019-11-05
TPK TOUCH SOLUTIONS (XIAMEN) INC
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  • Claims
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Problems solved by technology

[0007] In order to overcome the problems of complex hardware (multiple chips are required to solve signal processing) and complex detection methods existing in the current three-dimensional detection module, the present invention provides a detection method for a capacitive three-dimensional detection module

Method used

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Embodiment approach

[0059] As a preferred embodiment, the first pressure-sensitive unit 151 and the second pressure-sensitive unit 171 are made of different materials, specifically, the first pressure-sensitive layer 15 is made of a piezoelectric material with a positive temperature coefficient. The positive temperature coefficient pressure sensitive layer, the second pressure sensitive layer 17 is a negative temperature coefficient pressure sensitive layer made of a piezoelectric material with a negative temperature coefficient, the positive temperature coefficient pressure sensitive layer and the negative temperature coefficient pressure sensitive layer The noise signals generated under the same environmental influence are the same or similar in size, but their polarities are opposite. Therefore, in the pressure signal superposition mode, the first pressure-sensitive layer 15 and the second pressure-sensitive layer 17 can be made The noise signal is cancelled, and the pressure signal is doubled....

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Abstract

The invention provides a detection method of a capacitive three-dimensional detection module. A capacitive three-dimensional detection module is provided, the capacitive three-dimensional detection module comprises a capacitive touch sensor, a piezoelectric pressure sensor and a capacitive three-dimensional controller integrated on a chip, the capacitive touch sensor comprises a plurality of touch units, the piezoelectric pressure sensor comprises at least one pressure sensing unit, the detection method comprises the following steps: S1, detecting a touch signal of the plurality of touch units in a mutual capacitance manner to determine the position of a touch point; and S2, detecting a pressure signal of the at least one pressure sensing unit in a self capacitance manner to determine the size of a pressing pressure, wherein the touch signal and the pressure signal are calculated by the capacitive three-dimensional controller. The capacitance detection method is simple and good in practicability.

Description

【Technical field】 [0001] The invention relates to the field of touch pressure sensing, in particular to a detection method of a capacitive three-dimensional detection module. 【Background technique】 [0002] With the development of touch technology, most of the existing industrial electronic devices and consumer electronic devices have adopted touch modules with touch functions. etc., the electronic device performs a specific operation by detecting the position of the touch point. For the detection of touch points, whether it is a capacitive screen or a resistive screen, it all uses different principles to determine the two-dimensional coordinates of the touch point on the display device, and establishes a two-dimensional coordinate system (X , Y), the detection of the touch point is equivalent to determining the position of the touch point in the X-axis direction and the position in the Y-axis direction, that is, determining the two-dimensional position of the touch point. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
Inventor 周家麒庄志成林尚宇郑太狮
Owner TPK TOUCH SOLUTIONS (XIAMEN) INC
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