CN109564492A - 电容检测电路及电子装置 - Google Patents

电容检测电路及电子装置 Download PDF

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Publication number
CN109564492A
CN109564492A CN201780000160.8A CN201780000160A CN109564492A CN 109564492 A CN109564492 A CN 109564492A CN 201780000160 A CN201780000160 A CN 201780000160A CN 109564492 A CN109564492 A CN 109564492A
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CN
China
Prior art keywords
signal
driving
detection circuit
capacitive detection
circuit
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Granted
Application number
CN201780000160.8A
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English (en)
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CN109564492B (zh
Inventor
文亚南
梁颖思
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Shenzhen Goodix Technology Co Ltd
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Shenzhen Goodix Technology Co Ltd
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Publication of CN109564492A publication Critical patent/CN109564492A/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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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
    • G06F3/0416—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
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
    • 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
    • H03K2017/9602—Touch switches characterised by the type or shape of the sensing electrodes
    • H03K2017/9604—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes
    • H03K2017/9613—Touch switches characterised by the type or shape of the sensing electrodes characterised by the number of electrodes using two electrodes per touch switch

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dc Digital Transmission (AREA)
  • Electronic Switches (AREA)

Abstract

一种电容检测电路(12)，包括一感测电路(SC)，耦接于多个接收电极(RX_1‑RX_M)，用来产生多个感测结果，所述多个感测结果相关于多个传送电极(TX_1‑TX_N)与多个接收电极(RX_1‑RX_M)之间的电容值；以及一第一驱动电路(DC)，耦接于所述多个传送电极(TX_1‑TX_N)；其中，当所述第一驱动电路(DC)将所述多个传送电极(TX_1‑TX_N)中至少一第一传送电极(TX_n)浮接时，所述第一驱动电路(DC)产生至少一第一驱动信号(d1‑dn‑1，dn+1‑dN)至所述多个传送电极(TX_1‑TX_N)中至少一第二电极(TX_1‑TX_n‑1，TX_n+1‑TX_N)，以抵消所述多个接收电极(RX_1‑RX_M)与一接地端之间的一基线电流。

Description

PCT国内申请，说明书已公开。

Claims (22)

  1. PCT国内申请，权利要求书已公开。
CN201780000160.8A 2017-03-09 2017-03-09 电容检测电路及电子装置 Active CN109564492B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/076134 WO2018161307A1 (zh) 2017-03-09 2017-03-09 电容检测电路及电子装置

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CN109564492A true CN109564492A (zh) 2019-04-02
CN109564492B CN109564492B (zh) 2022-03-25

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US (1) US10712888B2 (zh)
EP (1) EP3441860A4 (zh)
CN (1) CN109564492B (zh)
WO (1) WO2018161307A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11914812B2 (en) * 2018-08-27 2024-02-27 Sigmasense, Llc. Current reference operative drive-sense circuit (DSC)
US10996728B2 (en) * 2019-01-04 2021-05-04 Sigmasense, Llc. Power supply signal conditioning system based on drive-sense circuit (DSC) processing

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CN102985835A (zh) * 2011-07-15 2013-03-20 赛普拉斯半导体公司 具有接地插入电极的电容感测电路、方法和系统
US20140152621A1 (en) * 2011-11-11 2014-06-05 Panasonic Corporation Touch-panel device
CN104076999A (zh) * 2013-03-29 2014-10-01 株式会社日本显示器 带有触摸检测功能的显示装置、电子设备及触摸检测装置
CN104375725A (zh) * 2014-11-07 2015-02-25 敦泰科技有限公司 单层互电容触摸屏、触摸屏装置、及设备
US20150185916A1 (en) * 2013-12-30 2015-07-02 Lg Display Co., Ltd. Electrostatic capacitive touch screen panel
CN105045437A (zh) * 2015-09-18 2015-11-11 京东方科技集团股份有限公司 一种触控感测电极、触控感测方法及设备
CN106293175A (zh) * 2015-05-27 2017-01-04 禾瑞亚科技股份有限公司 触控处理器、触控装置、触控系统与触控方法

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CN1941037A (zh) * 2005-09-30 2007-04-04 Lg电子（南京）等离子有限公司 等离子显示屏的驱动装置
US8058937B2 (en) * 2007-01-30 2011-11-15 Cypress Semiconductor Corporation Setting a discharge rate and a charge rate of a relaxation oscillator circuit
US9019220B1 (en) * 2012-03-14 2015-04-28 Cypress Semiconductor Corporation Baseline charge compensation
TWI529584B (zh) * 2014-08-29 2016-04-11 晨星半導體股份有限公司 觸控顯示裝置、其驅動方法與其製作方法
JP6514593B2 (ja) * 2015-07-17 2019-05-15 パナソニック液晶ディスプレイ株式会社 タッチ検出機能付表示装置
US10068121B2 (en) * 2015-08-31 2018-09-04 Cypress Semiconductor Corporation Baseline compensation for capacitive sensing
KR102703408B1 (ko) * 2016-06-10 2024-09-09 삼성디스플레이 주식회사 표시 장치 및 그의 제조 방법
CN106154666A (zh) * 2016-08-23 2016-11-23 京东方科技集团股份有限公司 一种阵列基板、其驱动方法、液晶显示面板及显示装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102985835A (zh) * 2011-07-15 2013-03-20 赛普拉斯半导体公司 具有接地插入电极的电容感测电路、方法和系统
US20140152621A1 (en) * 2011-11-11 2014-06-05 Panasonic Corporation Touch-panel device
CN104076999A (zh) * 2013-03-29 2014-10-01 株式会社日本显示器 带有触摸检测功能的显示装置、电子设备及触摸检测装置
US20150185916A1 (en) * 2013-12-30 2015-07-02 Lg Display Co., Ltd. Electrostatic capacitive touch screen panel
CN104375725A (zh) * 2014-11-07 2015-02-25 敦泰科技有限公司 单层互电容触摸屏、触摸屏装置、及设备
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Also Published As

Publication number Publication date
EP3441860A4 (en) 2019-05-15
WO2018161307A1 (zh) 2018-09-13
US20190073060A1 (en) 2019-03-07
EP3441860A1 (en) 2019-02-13
US10712888B2 (en) 2020-07-14
CN109564492B (zh) 2022-03-25

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