CN111164558A - 电容检测电路、触控芯片及电子设备 - Google Patents

电容检测电路、触控芯片及电子设备 Download PDF

Info

Publication number
CN111164558A
CN111164558A CN201880002537.8A CN201880002537A CN111164558A CN 111164558 A CN111164558 A CN 111164558A CN 201880002537 A CN201880002537 A CN 201880002537A CN 111164558 A CN111164558 A CN 111164558A
Authority
CN
China
Prior art keywords
capacitor
cancellation
voltage
closed state
module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201880002537.8A
Other languages
English (en)
Other versions
CN111164558B (zh
Inventor
蒋宏
唐智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Goodix Technology Co Ltd
Original Assignee
Shenzhen Goodix Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Goodix Technology Co Ltd filed Critical Shenzhen Goodix Technology Co Ltd
Publication of CN111164558A publication Critical patent/CN111164558A/zh
Application granted granted Critical
Publication of CN111164558B publication Critical patent/CN111164558B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • 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
    • 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
    • G06F3/0416—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
    • 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
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Landscapes

  • 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)
  • Position Input By Displaying (AREA)

Abstract

一种电容检测电路、触控芯片及电子设备，电容检测电路包括：控制模块(112)、电荷转移模块(142)、处理模块(152)、驱动模块(122)以及抵消模块(132)，所述控制模块(112)用于通过控制所述驱动模块(122)对待测电容(Cx)进行充电处理、所述抵消模块(132)对抵消电容(Cc)进行充电处理，以及控制所述抵消电容(Cc)对所述待测电容(Cx)进行电荷抵消处理；所述电荷转移模块(142)用于对所述抵消处理后所述待测电容(Cx)的电荷进行转化处理生成输出电压(VOUT)；所述处理模块(152)用于根据所述输出电压(VOUT)确定所述待测电容(Cx)被外加电场影响前后的电容变化量。该电容检测电路提高了自电容检测的灵敏度，最终提高了自电容检测的准确度。

Description

PCT国内申请，说明书已公开。

Claims (27)

  1. PCT国内申请，权利要求书已公开。
CN201880002537.8A 2018-09-07 2018-11-28 电容检测电路、触控芯片及电子设备 Active CN111164558B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/CN2018/104618 WO2020047844A1 (zh) 2018-09-07 2018-09-07 电容检测电路、触控芯片及电子设备
CNPCT/CN2018/104618 2018-09-07
PCT/CN2018/117925 WO2020048023A1 (zh) 2018-09-07 2018-11-28 电容检测电路、触控芯片及电子设备

Publications (2)

Publication Number Publication Date
CN111164558A true CN111164558A (zh) 2020-05-15
CN111164558B CN111164558B (zh) 2022-06-07

Family

ID=69143369

Family Applications (2)

Application Number Title Priority Date Filing Date
CN201880001528.7A Active CN111164557B (zh) 2018-09-07 2018-09-07 电容检测电路、触控芯片及电子设备
CN201880002537.8A Active CN111164558B (zh) 2018-09-07 2018-11-28 电容检测电路、触控芯片及电子设备

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN201880001528.7A Active CN111164557B (zh) 2018-09-07 2018-09-07 电容检测电路、触控芯片及电子设备

Country Status (4)

Country Link
US (2) US10949032B2 (zh)
EP (2) EP3640779B1 (zh)
CN (2) CN111164557B (zh)
WO (2) WO2020047844A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111880690A (zh) * 2020-08-06 2020-11-03 深圳市汇顶科技股份有限公司 噪声检测电路、自容检测方法、触控芯片及电子设备
WO2022027503A1 (zh) * 2020-08-06 2022-02-10 深圳市汇顶科技股份有限公司 噪声检测电路、自容检测方法、触控芯片及电子设备

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111587415B (zh) * 2018-12-17 2024-03-29 深圳市汇顶科技股份有限公司 触摸检测方法、触控芯片及电子设备
EP3798808B1 (en) * 2019-08-01 2022-10-12 Shenzhen Goodix Technology Co., Ltd. Capacitance detection circuit, touch chip, and electronic device
KR20210018723A (ko) * 2019-08-09 2021-02-18 삼성디스플레이 주식회사 터치 구동 회로 및 이를 포함하는 표시 장치
CN111309187B (zh) * 2020-03-17 2022-02-22 北京集创北方科技股份有限公司 检测电路、触控面板及电子设备
KR102375320B1 (ko) * 2020-04-24 2022-03-16 관악아날로그 주식회사 용량성 센서를 위한 읽기 회로
WO2022051757A2 (en) * 2020-09-03 2022-03-10 Microchip Technology Incorporated Voltage sampling using an energy pulse, and related systems, methods and devices
WO2022140957A1 (zh) * 2020-12-28 2022-07-07 深圳市汇顶科技股份有限公司 一种nfc设备
CN112415604B (zh) * 2021-01-22 2021-06-18 深圳市汇顶科技股份有限公司 检测电路、芯片及相关电子装置
KR20220163758A (ko) 2021-06-03 2022-12-12 서울대학교산학협력단 용량성 센서를 위한 읽기 회로

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102830882A (zh) * 2012-09-04 2012-12-19 北京集创北方科技有限公司 一种电容触摸屏触摸检测方法和检测电路
CN103902114A (zh) * 2012-12-30 2014-07-02 比亚迪股份有限公司 电容检测电路
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
CN108064344A (zh) * 2017-11-20 2018-05-22 深圳市汇顶科技股份有限公司 差分电路、电容检测电路、触摸检测装置和终端设备
CN108475155A (zh) * 2018-03-30 2018-08-31 深圳市为通博科技有限责任公司 电容检测电路、触摸检测装置和终端设备

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVE20040012U1 (it) * 2004-05-26 2004-08-26 Imarc Spa Staffa di sostegno per bracciolo o schienale di sedie, in particolare sedie da ufficio.
US7301350B2 (en) * 2005-06-03 2007-11-27 Synaptics Incorporated Methods and systems for detecting a capacitance using sigma-delta measurement techniques
TWI357501B (en) * 2008-03-25 2012-02-01 Raydium Semiconductor Corp Evaluation circuit for capacitance and method ther
US9395850B2 (en) * 2008-10-06 2016-07-19 Japan Display Inc. Coordinate input device and display device with the same
TWI388849B (zh) * 2009-04-07 2013-03-11 Ite Tech Inc 電容介面電路
CN102200869B (zh) * 2010-03-24 2013-05-08 盛群半导体股份有限公司 电容式触控装置及其感测装置
US8624870B2 (en) * 2010-04-22 2014-01-07 Maxim Integrated Products, Inc. System for and method of transferring charge to convert capacitance to voltage for touchscreen controllers
US8952927B2 (en) * 2012-05-18 2015-02-10 Atmel Corporation Self-capacitance measurement with compensated capacitance
CN203117298U (zh) * 2013-01-30 2013-08-07 比亚迪股份有限公司 一种电容检测电路
US10558302B2 (en) 2014-05-23 2020-02-11 Apple Inc. Coded integration of a self-capacitance array
CN104049822B (zh) * 2014-06-18 2017-02-15 深圳贝特莱电子科技股份有限公司 一种触摸屏控制电路的检测系统
KR102198854B1 (ko) * 2014-11-05 2021-01-05 삼성전자 주식회사 터치 아날로그 프론트 엔드 및 이를 포함하는 터치 센서 컨트롤러
CN104459400B (zh) * 2014-12-08 2018-07-17 深圳市华星光电技术有限公司 用于自容式触摸屏的检测电路和检测方法
US10345947B2 (en) * 2015-05-27 2019-07-09 Melfas Inc. Apparatus and method for detecting hovering object, switching matrix, apparatus for determining compensation capacitance, method of compensating for force sensing capacitance, and apparatus for detecting force input
CN106325632B (zh) * 2015-06-15 2020-12-15 恩智浦美国有限公司 具有噪声抑制的电容传感器
WO2018076204A1 (zh) * 2016-10-26 2018-05-03 深圳市汇顶科技股份有限公司 一种电容变化量检测电路及触摸屏、触摸检测方法
KR102020998B1 (ko) * 2016-10-31 2019-09-11 선전 구딕스 테크놀로지 컴퍼니, 리미티드 정전 용량 검출 장치, 방법 및 압력 검출 시스템
KR102623873B1 (ko) * 2016-11-02 2024-01-12 삼성전자주식회사 터치 패널 컨트롤러
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
TWI621984B (zh) * 2016-12-02 2018-04-21 瑞鼎科技股份有限公司 電容値量測電路及電容値量測方法
JP2018101281A (ja) * 2016-12-20 2018-06-28 株式会社東海理化電機製作所 タッチ検出装置
WO2018132963A1 (zh) * 2017-01-18 2018-07-26 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
CN106598370B (zh) * 2017-01-19 2024-03-15 北京集创北方科技股份有限公司 触摸检测电路及其触控装置
KR101908286B1 (ko) * 2017-02-23 2018-10-16 (주)멜파스 커패시턴스 검출 방법 및 이를 이용하는 커패시턴스 검출 장치
CN107690584B (zh) * 2017-09-11 2020-01-03 深圳市汇顶科技股份有限公司 电容检测电路、电容检测的方法、触摸检测装置和终端设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102830882A (zh) * 2012-09-04 2012-12-19 北京集创北方科技有限公司 一种电容触摸屏触摸检测方法和检测电路
CN103902114A (zh) * 2012-12-30 2014-07-02 比亚迪股份有限公司 电容检测电路
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
CN108064344A (zh) * 2017-11-20 2018-05-22 深圳市汇顶科技股份有限公司 差分电路、电容检测电路、触摸检测装置和终端设备
CN108475155A (zh) * 2018-03-30 2018-08-31 深圳市为通博科技有限责任公司 电容检测电路、触摸检测装置和终端设备

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111880690A (zh) * 2020-08-06 2020-11-03 深圳市汇顶科技股份有限公司 噪声检测电路、自容检测方法、触控芯片及电子设备
WO2022027503A1 (zh) * 2020-08-06 2022-02-10 深圳市汇顶科技股份有限公司 噪声检测电路、自容检测方法、触控芯片及电子设备
US11650696B2 (en) 2020-08-06 2023-05-16 Shenzhen GOODIX Technology Co., Ltd. Noise detection circuit, self-capacitance detection method, touch chip, and electronic device

Also Published As

Publication number Publication date
CN111164558B (zh) 2022-06-07
EP3640780A1 (en) 2020-04-22
US10949032B2 (en) 2021-03-16
WO2020048023A1 (zh) 2020-03-12
CN111164557B (zh) 2023-10-20
EP3640779B1 (en) 2022-04-27
WO2020047844A1 (zh) 2020-03-12
US20200110117A1 (en) 2020-04-09
US10990230B2 (en) 2021-04-27
EP3640780B1 (en) 2021-10-27
EP3640780A4 (en) 2020-06-03
CN111164557A (zh) 2020-05-15
US20200081567A1 (en) 2020-03-12
EP3640779A4 (en) 2020-06-24
EP3640779A1 (en) 2020-04-22

Similar Documents

Publication Publication Date Title
CN111164558B (zh) 电容检测电路、触控芯片及电子设备
US10788380B2 (en) Apparatus for detecting capacitance, electronic device and apparatus for detecting force
CN109496273B (zh) 电容检测电路、触摸检测装置和终端设备
EP3971694B1 (en) Noise measurement circuit, self-capacitance measurement method, touch chip and electronic device
KR20150123488A (ko) 터치 감지 장치
CN112965641B (zh) 一种电容检测电路、相关方法、模块、装置及设备
CN112689817B (zh) 电容检测方法
US11206019B2 (en) Capacitance detection circuit, capacitance detection method, touch chip, and electronic device
CN112602046B (zh) 电容检测电路、触控芯片及电子设备
EP3694006B1 (en) Input device
CN112363003B (zh) 自电容检测电路、触控芯片和电子设备
CN111880690A (zh) 噪声检测电路、自容检测方法、触控芯片及电子设备

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Capacitance detection circuits, touch chips, and electronic devices

Effective date of registration: 20231219

Granted publication date: 20220607

Pledgee: Agricultural Bank of China Limited Shenzhen Futian Branch

Pledgor: SHENZHEN GOODIX TECHNOLOGY Co.,Ltd.

Registration number: Y2023980072603