CN110856448A - 电容检测电路、触控装置及终端设备 - Google Patents

电容检测电路、触控装置及终端设备 Download PDF

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CN110856448A
CN110856448A CN201880000974.6A CN201880000974A CN110856448A CN 110856448 A CN110856448 A CN 110856448A CN 201880000974 A CN201880000974 A CN 201880000974A CN 110856448 A CN110856448 A CN 110856448A
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capacitance
switch
capacitor
value
detection circuit
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CN110856448B (zh
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蒋宏
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0444—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single conductive element covering the whole sensing surface, e.g. by sensing the electrical current flowing at the corners
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
    • G01R27/2605—Measuring capacitance
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

本申请实施例提供一种电容检测电路、触控装置及终端设备。电容检测电路包括：充电电路，用于对所述待测电容充电，使所述待测电容的极板两端的电压差值为第一预设电压值；放电电路，用于使充电后的所述待测电容释放第一电荷量的电荷，其中，所述第一电荷量小于所述第一预设电压值对应的电荷量；信号检测电路，用于检测通过所述放电电路放电后的所述待测电容上的电压值与第二预设电压值之间的电压差值，以根据所述电压差值确定所述待测电容的电容值变化量。该电容检测电路能够在自电容较大时进行电容检测。

Description

PCT国内申请，说明书已公开。

Claims (13)

  1. PCT国内申请，权利要求书已公开。
CN201880000974.6A 2018-06-21 2018-06-21 电容检测电路、触控装置及终端设备 Active CN110856448B (zh)

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CN111307183A (zh) * 2020-04-09 2020-06-19 北京先通康桥医药科技有限公司 阵列式电容传感器的动态测量电路
CN111399679A (zh) * 2020-03-11 2020-07-10 北京集创北方科技股份有限公司 电容检测装置
CN111600590A (zh) * 2020-07-21 2020-08-28 深圳市汇顶科技股份有限公司 电容检测电路和触控芯片
CN111819451A (zh) * 2020-03-03 2020-10-23 深圳市汇顶科技股份有限公司 电容检测电路、传感器、芯片以及电子设备
CN112014648A (zh) * 2020-08-10 2020-12-01 南京天易合芯电子有限公司 一种可以检测单侧电容的电容检测方法
CN112485640A (zh) * 2020-11-18 2021-03-12 苏州华兴源创科技股份有限公司 内置电容器的检测方法、装置、检测设备和存储介质
CN114221644A (zh) * 2022-02-22 2022-03-22 杭州炬源智能科技有限公司 一种带触摸按键的智能水表以及触摸按键的检测方法
CN114428569A (zh) * 2022-01-20 2022-05-03 深圳市华科创智技术有限公司 一种纳米银电容屏维修方法及装置
CN114543902A (zh) * 2022-04-25 2022-05-27 杭州炬源智能科技有限公司 一种液位检测水表以及检测方法
CN118068988A (zh) * 2024-04-25 2024-05-24 上海海栎创科技股份有限公司 一种自电容触摸检测电路及检测方法

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CN111813277A (zh) * 2020-07-10 2020-10-23 温州长江汽车电子有限公司 一种电容式触摸开关的双层压力触摸信号采集方法
CN111966248B (zh) * 2020-09-22 2022-04-22 联想(北京)有限公司 一种触控装置、电子设备及信息处理方法
CN112684258B (zh) * 2020-11-27 2022-09-27 国网河北省电力有限公司武安市供电分公司 一种换流阀电容检测装置和检测方法
CN114546168B (zh) * 2022-02-24 2023-07-21 汇春科技(成都)有限公司 自电容检测电路、触摸检测方法和装置

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CN111819451A (zh) * 2020-03-03 2020-10-23 深圳市汇顶科技股份有限公司 电容检测电路、传感器、芯片以及电子设备
CN111399679B (zh) * 2020-03-11 2022-04-08 北京集创北方科技股份有限公司 电容检测装置
CN111399679A (zh) * 2020-03-11 2020-07-10 北京集创北方科技股份有限公司 电容检测装置
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CN111600590B (zh) * 2020-07-21 2020-11-03 深圳市汇顶科技股份有限公司 电容检测电路和触控芯片
CN111600590A (zh) * 2020-07-21 2020-08-28 深圳市汇顶科技股份有限公司 电容检测电路和触控芯片
CN112014648A (zh) * 2020-08-10 2020-12-01 南京天易合芯电子有限公司 一种可以检测单侧电容的电容检测方法
CN112014648B (zh) * 2020-08-10 2023-04-28 南京天易合芯电子有限公司 一种可以检测单侧电容的电容检测方法
CN112485640A (zh) * 2020-11-18 2021-03-12 苏州华兴源创科技股份有限公司 内置电容器的检测方法、装置、检测设备和存储介质
CN114428569A (zh) * 2022-01-20 2022-05-03 深圳市华科创智技术有限公司 一种纳米银电容屏维修方法及装置
CN114428569B (zh) * 2022-01-20 2024-02-27 深圳市华科创智技术有限公司 一种纳米银电容屏维修方法及装置
CN114221644A (zh) * 2022-02-22 2022-03-22 杭州炬源智能科技有限公司 一种带触摸按键的智能水表以及触摸按键的检测方法
CN114221644B (zh) * 2022-02-22 2023-08-29 杭州炬源智能科技有限公司 一种带触摸按键的智能水表以及触摸按键的检测方法
CN114543902A (zh) * 2022-04-25 2022-05-27 杭州炬源智能科技有限公司 一种液位检测水表以及检测方法
CN114543902B (zh) * 2022-04-25 2022-07-22 杭州炬源智能科技有限公司 一种液位检测水表以及检测方法
CN118068988A (zh) * 2024-04-25 2024-05-24 上海海栎创科技股份有限公司 一种自电容触摸检测电路及检测方法

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EP3617720A1 (en) 2020-03-04
EP3617720A4 (en) 2020-05-06
US10860152B2 (en) 2020-12-08
EP3617720B1 (en) 2021-12-01
WO2019241966A1 (zh) 2019-12-26
US20190391704A1 (en) 2019-12-26
CN110856448B (zh) 2021-09-10

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