Electrostatic sensor

An electrostatic sensor, electrostatic technology, applied in the field of electronic sensors, to achieve the effect of simple method and easy operation

Active Publication Date: 2016-07-27
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the prior art, there is no electrostatic sensor that realizes non-contact control by static electricity affecting the resistance of the sensing device of the electrostatic sensor.

Method used

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  • Electrostatic sensor
  • Electrostatic sensor
  • Electrostatic sensor

Examples

Experimental program
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Effect test

no. 3 example

[0065] The third electrode 120 and the first electrode 122 at one end of each first sensing element 124 can be electrically connected to the control unit 60 of the electrostatic sensor 300 through wires, so that the control unit 60 can control the module through its circuit 62 respectively apply voltage to each first sensing element 124 , and measure the resistance of each first sensing element 124 through its resistance testing module 64 . Like the electrostatic sensor 200 of the second embodiment, the electrostatic sensor 300 of the third embodiment can sense the position of an electrostatically charged object above its base 14 in the second direction Y and be used for electronic device control. In the third embodiment, one third electrode 120 replaces the plurality of first electrodes 122 in the second embodiment, and realizes the same function as the second embodiment, and simplifies the structure.

[0066] It can be understood that the electrostatic sensor 300 of the thir...

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Abstract

The invention relates to an electrostatic sensor. The electrostatic sensor comprises a sensing unit and a control unit, wherein the sensing unit comprises at least one first sensing element and at least two first electrodes arranged at two ends of at least one first sensing element and electrically connected with at least one first sensing element; at least one sensing element adopts a one-dimensional semiconductor nanostructure; an absolute value of a steep rate of the movement of a Fermi surface under the conductivity change of the one-dimensional semiconductor nanostructure is about greater than 10<-3>; when an object with static electricity gets close to the first sensing element, the resistance of the first sensing element is changed; and the control unit is electrically connected with at least one first sensing element through a lead wire, measures the resistance of at least one sensing element through applying a voltage to at least one first sensing element, and outputs a resistance signal.

Description

technical field [0001] The invention relates to an electronic sensor, in particular to an electrostatic sensor. Background technique [0002] In recent years, along with the high performance and diversification of various electronic devices such as mobile phones and touch navigation systems, the number of electronic devices in which a light-transmitting touch panel is mounted on the front of a display device such as a liquid crystal is increasing. Users of such electronic devices use the touch screen to visually confirm the display content of the display device located on the back of the touch screen, while pressing the touch screen with a finger or a pen to perform operations. Thereby, various functions of the electronic device can be operated. [0003] Some touch screens can also recognize the hovering action, that is, the touch screen can sense the position of the hand or the stylus on the panel by approaching the touch screen with the hand or the stylus but without touc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
CPCG06F3/04166G06F3/0446G06F3/045G06F3/04883G06F2203/04101G06F2203/04103H03K17/955H03K2017/9602
Inventor 王新河李东琦王江涛武文赟何宇俊柳鹏赵清宇姜开利范守善
Owner TSINGHUA UNIV
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