CN110300897A - 电容检测电路、触控装置和终端设备 - Google Patents

电容检测电路、触控装置和终端设备 Download PDF

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Publication number
CN110300897A
CN110300897A CN201880003881.9A CN201880003881A CN110300897A CN 110300897 A CN110300897 A CN 110300897A CN 201880003881 A CN201880003881 A CN 201880003881A CN 110300897 A CN110300897 A CN 110300897A
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CN
China
Prior art keywords
switch
capacitor
charge
phase
capacitance
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CN201880003881.9A
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CN110300897B (zh
Inventor
汪正锋
范硕
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology Co Ltd
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Publication of CN110300897A publication Critical patent/CN110300897A/zh
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    • 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
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
    • G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
    • 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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches
    • H03K17/962—Capacitive touch switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
    • H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
    • H03K2217/96—Touch switches
    • H03K2217/9607—Capacitive touch switches
    • H03K2217/960735—Capacitive touch switches characterised by circuit details
    • H03K2217/96074—Switched capacitor

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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)
  • Measurement Of Resistance Or Impedance (AREA)
  • Electronic Switches (AREA)

Abstract

本申请公开了一种电容检测电路、触控装置和终端设备，有利于降低电容检测电路的面积，从而能够降低芯片的成本，该电容检测电路，连接至检测电容器，其特征在于，包括：校准电容器；充放电模块，包括第一电流源和第二电流源，所述第一电流源用于对所述检测电容器进行充电或放电，所述第二电流源用于对所述校准电容器进行充电或放电；积分器，用于将检测电容器的电容信号转化为电压信号；和控制模块，用于控制所述充放电模块和所述积分器的工作状态。

Description

PCT国内申请，说明书已公开。

Claims (19)

  1. PCT国内申请，权利要求书已公开。
CN201880003881.9A 2018-01-24 2018-01-24 电容检测电路、触控装置和终端设备 Active CN110300897B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/073907 WO2019144303A1 (zh) 2018-01-24 2018-01-24 电容检测电路、触控装置和终端设备

Publications (2)

Publication Number Publication Date
CN110300897A true CN110300897A (zh) 2019-10-01
CN110300897B CN110300897B (zh) 2020-11-03

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CN201880003881.9A Active CN110300897B (zh) 2018-01-24 2018-01-24 电容检测电路、触控装置和终端设备

Country Status (5)

Country Link
US (1) US10845926B2 (zh)
EP (1) EP3543716B1 (zh)
KR (1) KR102337627B1 (zh)
CN (1) CN110300897B (zh)
WO (1) WO2019144303A1 (zh)

Cited By (6)

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CN111638015A (zh) * 2020-06-29 2020-09-08 歌尔科技有限公司 一种接口设备的进水检测装置和方法
CN113126817A (zh) * 2021-03-12 2021-07-16 曜芯科技有限公司 电容感测电路、相关芯片及触控装置
CN114184986A (zh) * 2021-10-29 2022-03-15 浪潮(北京)电子信息产业有限公司 一种电容异常检测装置及服务器
CN114460360A (zh) * 2022-04-12 2022-05-10 江西西平计量检测有限公司 一种基于电表测量电流时间积分的检测方法、系统及装置
WO2022105431A1 (zh) * 2020-11-18 2022-05-27 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
CN116317545A (zh) * 2023-05-11 2023-06-23 上海泰矽微电子有限公司 负压电荷转移电路及电容触控检测电路

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CN111488083B (zh) * 2019-01-25 2023-03-31 瑞昱半导体股份有限公司 具有自校准功能的电容式触摸检测装置
EP3786912B1 (en) 2019-08-27 2023-12-06 Nxp B.V. Integrated circuit and measurement method
CN111142705B (zh) * 2019-12-18 2023-09-08 基合半导体（宁波）有限公司 一种自电容检测装置、方法及移动终端
EP4080227A4 (en) 2020-03-03 2023-03-29 Shenzhen Goodix Technology Co., Ltd. CAPACITOR, SENSOR, CHIP AND ELECTRONIC DEVICE DETECTION CIRCUIT
CN113655988A (zh) * 2021-08-12 2021-11-16 上海晶丰明源半导体股份有限公司 一种运算电路及芯片
US11868173B2 (en) * 2021-08-19 2024-01-09 Marvell Asia Pte Ltd Wireline transceiver with internal and external clock generation
CN117220659B (zh) * 2023-09-06 2024-05-17 深圳市航顺芯片技术研发有限公司 触摸按键检测方法、电路及电子设备

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US6353337B2 (en) * 2000-07-17 2002-03-05 Mitsubishi Denki Kabushiki Kaisha Load capacitance measuring circuit and output buffer adaptive to wide range of load capacitance
CN101076771A (zh) * 2005-04-30 2007-11-21 埃派克森微电子有限公司 电源管理电路和方法
CN101477152A (zh) * 2008-12-24 2009-07-08 北京希格玛和芯微电子技术有限公司 一种电容检测装置及方法
CN102253289A (zh) * 2010-05-18 2011-11-23 联咏科技股份有限公司 用于触控装置的电容量测量装置
CN104808880A (zh) * 2014-01-29 2015-07-29 辛纳普蒂克斯显像装置株式会社 触摸检测电路以及具备该触摸检测电路的半导体集成电路
CN206440771U (zh) * 2017-01-18 2017-08-25 深圳市汇顶科技股份有限公司 检测电容的装置、电子设备和检测压力的装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111638015A (zh) * 2020-06-29 2020-09-08 歌尔科技有限公司 一种接口设备的进水检测装置和方法
WO2022105431A1 (zh) * 2020-11-18 2022-05-27 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
CN113126817A (zh) * 2021-03-12 2021-07-16 曜芯科技有限公司 电容感测电路、相关芯片及触控装置
WO2022188276A1 (zh) * 2021-03-12 2022-09-15 迪克创新科技有限公司 电容感测电路、相关芯片及触控装置
CN114184986A (zh) * 2021-10-29 2022-03-15 浪潮(北京)电子信息产业有限公司 一种电容异常检测装置及服务器
CN114460360A (zh) * 2022-04-12 2022-05-10 江西西平计量检测有限公司 一种基于电表测量电流时间积分的检测方法、系统及装置
CN114460360B (zh) * 2022-04-12 2022-07-01 江西西平计量检测有限公司 一种基于电表测量电流时间积分的检测方法、系统及装置
CN116317545A (zh) * 2023-05-11 2023-06-23 上海泰矽微电子有限公司 负压电荷转移电路及电容触控检测电路
CN116317545B (zh) * 2023-05-11 2023-08-08 上海泰矽微电子有限公司 负压电荷转移电路及电容触控检测电路

Also Published As

Publication number Publication date
US20190272056A1 (en) 2019-09-05
CN110300897B (zh) 2020-11-03
US10845926B2 (en) 2020-11-24
KR20200101435A (ko) 2020-08-27
KR102337627B1 (ko) 2021-12-09
EP3543716B1 (en) 2021-03-03
WO2019144303A1 (zh) 2019-08-01
EP3543716A1 (en) 2019-09-25
EP3543716A4 (en) 2020-01-29

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