CN111052054A - 检测电路及电子设备 - Google Patents

检测电路及电子设备 Download PDF

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Publication number
CN111052054A
CN111052054A CN201880001142.6A CN201880001142A CN111052054A CN 111052054 A CN111052054 A CN 111052054A CN 201880001142 A CN201880001142 A CN 201880001142A CN 111052054 A CN111052054 A CN 111052054A
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China
Prior art keywords
capacitor
switch
circuit
voltage source
cancellation
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CN201880001142.6A
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CN111052054B (zh
Inventor
冯林
张冠军
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology Co Ltd
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Publication of CN111052054A publication Critical patent/CN111052054A/zh
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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
    • G06F3/0416—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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
    • G06F3/04182—Filtering of noise external to the device and not generated by digitiser components
    • 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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes

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

Abstract

本申请提供一种检测电路及电子设备，该检测电路包括打码电路、抵消电路、交换电路；打码电路的每个打码模块与待测电容连接，以对其充电；抵消电路的每个抵消模块与待测电容连接，以通过两个方向进行电容抵消；交换电路的每个抵消模块与交换模块连接，以在进行电容信号的转换后并输出。本申请可提高电容的检测精确度。

Description

PCT国内申请，说明书已公开。

Claims (10)

  1. PCT国内申请，权利要求书已公开。
CN201880001142.6A 2018-08-13 2018-08-13 检测电路及电子设备 Active CN111052054B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/100280 WO2020034068A1 (zh) 2018-08-13 2018-08-13 检测电路及电子设备

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CN111052054A true CN111052054A (zh) 2020-04-21
CN111052054B CN111052054B (zh) 2023-10-20

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US (1) US11093081B2 (zh)
EP (1) EP3839705B1 (zh)
CN (1) CN111052054B (zh)
WO (1) WO2020034068A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3971694B1 (en) * 2020-08-06 2023-05-31 Shenzhen Goodix Technology Co., Ltd. Noise measurement circuit, self-capacitance measurement method, touch chip and electronic device
CN113302580A (zh) * 2021-04-13 2021-08-24 深圳市汇顶科技股份有限公司 打码电路、主动笔以及电子设备

Citations (11)

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JPS6240587A (ja) * 1985-08-17 1987-02-21 Nec Home Electronics Ltd 静電容量型コ−ド読取り方式
JP2013051470A (ja) * 2011-08-30 2013-03-14 Seiko Epson Corp スイッチトキャパシター積分回路、フィルター回路、多出力フィルター回路、物理量測定装置、及び電子機器
US20150184989A1 (en) * 2013-12-30 2015-07-02 Samsung Electro-Mechanics Co., Ltd. Touch sensing device and touchscreen device
CN105335009A (zh) * 2015-12-03 2016-02-17 深圳磨石科技有限公司 触摸显示装置和电子设备
US20160225829A1 (en) * 2013-05-30 2016-08-04 Boe Technology Group Co., Ltd. Touch display driving circuit, method thereof and display apparatus
CN106257386A (zh) * 2015-06-22 2016-12-28 三星电子株式会社 利用自适应滤波器的触摸屏控制器和触摸屏系统
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
US20170293376A1 (en) * 2016-04-08 2017-10-12 Microsoft Technology Licensing, Llc Hover sensor
CN107562227A (zh) * 2016-06-30 2018-01-09 意法半导体亚太私人有限公司 自感测触摸面板
CN107980115A (zh) * 2017-11-08 2018-05-01 深圳市汇顶科技股份有限公司 电容检测装置、触控装置和终端设备
CN108124474A (zh) * 2017-01-18 2018-06-05 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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8723829B2 (en) * 2010-03-17 2014-05-13 Sharp Kabushiki Kaisha Touch sensor-equipped display device
KR102198854B1 (ko) * 2014-11-05 2021-01-05 삼성전자 주식회사 터치 아날로그 프론트 엔드 및 이를 포함하는 터치 센서 컨트롤러
US20170123486A1 (en) * 2015-11-02 2017-05-04 Cirque Corporation Series offset capacitor for internal reference based capacitive sampling
CN106648268B (zh) * 2016-11-28 2020-03-20 上海磐启微电子有限公司 一种电容屏触摸检测电路和检测方法

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6240587A (ja) * 1985-08-17 1987-02-21 Nec Home Electronics Ltd 静電容量型コ−ド読取り方式
JP2013051470A (ja) * 2011-08-30 2013-03-14 Seiko Epson Corp スイッチトキャパシター積分回路、フィルター回路、多出力フィルター回路、物理量測定装置、及び電子機器
US20160225829A1 (en) * 2013-05-30 2016-08-04 Boe Technology Group Co., Ltd. Touch display driving circuit, method thereof and display apparatus
US20150184989A1 (en) * 2013-12-30 2015-07-02 Samsung Electro-Mechanics Co., Ltd. Touch sensing device and touchscreen device
CN106257386A (zh) * 2015-06-22 2016-12-28 三星电子株式会社 利用自适应滤波器的触摸屏控制器和触摸屏系统
CN105335009A (zh) * 2015-12-03 2016-02-17 深圳磨石科技有限公司 触摸显示装置和电子设备
US20170293376A1 (en) * 2016-04-08 2017-10-12 Microsoft Technology Licensing, Llc Hover sensor
CN107562227A (zh) * 2016-06-30 2018-01-09 意法半导体亚太私人有限公司 自感测触摸面板
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
CN108124474A (zh) * 2017-01-18 2018-06-05 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
US20180209858A1 (en) * 2017-01-18 2018-07-26 Shenzhen GOODIX Technology Co., Ltd. Apparatus for detecting capacitance, electronic device and apparatus for detecting force
CN107980115A (zh) * 2017-11-08 2018-05-01 深圳市汇顶科技股份有限公司 电容检测装置、触控装置和终端设备

Also Published As

Publication number Publication date
US20200089386A1 (en) 2020-03-19
WO2020034068A1 (zh) 2020-02-20
CN111052054B (zh) 2023-10-20
EP3839705A4 (en) 2021-08-18
EP3839705A1 (en) 2021-06-23
EP3839705B1 (en) 2023-03-08
US11093081B2 (en) 2021-08-17

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