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WO2012053749A3 - 멀티 터치 패널용 정전용량 감지회로 - Google Patents

멀티 터치 패널용 정전용량 감지회로 Download PDF

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Publication number
WO2012053749A3
WO2012053749A3 PCT/KR2011/007070 KR2011007070W WO2012053749A3 WO 2012053749 A3 WO2012053749 A3 WO 2012053749A3 KR 2011007070 W KR2011007070 W KR 2011007070W WO 2012053749 A3 WO2012053749 A3 WO 2012053749A3
Authority
WO
WIPO (PCT)
Prior art keywords
axis electrode
touch panel
circuit unit
capacitance sensing
sensing circuit
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.)
Ceased
Application number
PCT/KR2011/007070
Other languages
English (en)
French (fr)
Other versions
WO2012053749A2 (ko
Inventor
한상현
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.)
PONITCHIPS CO Ltd
Original Assignee
PONITCHIPS 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 PONITCHIPS CO Ltd filed Critical PONITCHIPS CO Ltd
Publication of WO2012053749A2 publication Critical patent/WO2012053749A2/ko
Publication of WO2012053749A3 publication Critical patent/WO2012053749A3/ko
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/04164—Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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 OR CALCULATING; 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
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F2203/04104—Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate

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)
  • Computer Networks & Wireless Communication (AREA)
  • Electronic Switches (AREA)
  • Position Input By Displaying (AREA)

Abstract

본 발명은 멀티 터치 패널용 정전용량 감지회로에 관한 것으로, x축 전극과 y축 전극으로 구성되는 터치패널과, 상기 x축 전극으로 송신신호를 시분할적으로 일정한 주기를 갖는 송신신호를 인가하는 송신회로부와, 사용자의 인체 접촉이 발생하면 상기 x축 전극과 y축 전극 사이에 발생되는 정전용량 성분의 차이를 y축 전극으로부터 검출하기 위한 수신회로부로 구성되는 멀티 터치 패널용 감지회로에 있어서, 상기 수신회로부는, 전류미러(Current Mirror)기반의 전하 적분회로를 구성하고, 상기 송신회로부에서 인가되는 사각파 송신신호의 상승 주기와 하강 주기를 각각 적분하여 상기 터치패널의 x축 전극과 y축 전극 사이에 발생되는 정전용량 성분의 차이를 검출하여 터치 여부를 검출하는 것을 특징으로 한다. 이와 같이 구성되는 본 발명은 적분 후 전압값을 정밀하게 유지할 수 있고, 노이즈에 강하며, 제조의 용이성과 저전력 소비특성을 가지는 장점이 있다.
PCT/KR2011/007070 2010-10-18 2011-09-27 멀티 터치 패널용 정전용량 감지회로 Ceased WO2012053749A2 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2010-0101544 2010-10-18
KR1020100101544A KR101292733B1 (ko) 2010-10-18 2010-10-18 멀티 터치 패널용 정전용량 감지회로

Publications (2)

Publication Number Publication Date
WO2012053749A2 WO2012053749A2 (ko) 2012-04-26
WO2012053749A3 true WO2012053749A3 (ko) 2012-06-14

Family

ID=45933732

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2011/007070 Ceased WO2012053749A2 (ko) 2010-10-18 2011-09-27 멀티 터치 패널용 정전용량 감지회로

Country Status (3)

Country Link
US (1) US20120092297A1 (ko)
KR (1) KR101292733B1 (ko)
WO (1) WO2012053749A2 (ko)

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US8411062B1 (en) 2012-03-14 2013-04-02 Cypress Semiconductor Corporation Adaptive drive system
US20130300690A1 (en) * 2012-04-25 2013-11-14 Silicon Works Co., Ltd. Control circuit of touch screen and noise removing method
KR101314580B1 (ko) * 2012-05-09 2013-10-07 주식회사 실리콘웍스 터치신호 처리회로, 터치신호 처리시스템 및 터치신호 처리방법
US9306560B2 (en) * 2012-05-14 2016-04-05 Atmel Corporation Self-capacitance detection using trans-conductance reference
KR101350673B1 (ko) * 2012-05-30 2014-01-13 삼성전기주식회사 정전용량 감지 장치, 정전용량 감지 방법, 및 터치스크린 장치
CN102799325B (zh) * 2012-06-21 2016-03-30 敦泰科技有限公司 一种自电容触摸屏检测方法、装置和系统
KR101444524B1 (ko) 2012-07-09 2014-09-24 삼성전기주식회사 정전용량 감지 장치, 정전용량 감지 방법 및 터치스크린 장치
KR101902929B1 (ko) 2012-07-25 2018-10-01 삼성전자주식회사 터치 패널, 터치 스크린 장치 및 이의 구동 방법
US20140267143A1 (en) * 2013-03-15 2014-09-18 Synaptics Incorporated System and method for a transcapacitive proximity sensing device
US8928359B2 (en) * 2013-05-08 2015-01-06 Synaptics Incorporated Charge distribution
TWI516998B (zh) * 2013-07-26 2016-01-11 奕力科技股份有限公司 雜訊補償的觸控面板及其觸控裝置
KR20150140047A (ko) 2014-06-05 2015-12-15 삼성전기주식회사 적분 회로, 접촉 감지 장치 및 터치스크린 장치
TWI573077B (zh) * 2015-03-27 2017-03-01 凌通科技股份有限公司 電子印刷品的自動頁面檢測方法以及使用其之電子印刷品
US10712870B2 (en) 2015-09-09 2020-07-14 Huawei Technologies Co., Ltd. Method for improving fault tolerance of touchscreen and touchscreen terminal
JP6615683B2 (ja) * 2016-04-14 2019-12-04 ローム株式会社 容量測定回路、それを用いた入力装置、電子機器
CN108732609B (zh) * 2017-04-24 2022-01-25 睿生光电股份有限公司 感测装置
CN111448538A (zh) * 2017-12-04 2020-07-24 触觉实验室股份有限公司 有源触控笔装置和方法
US10503319B2 (en) * 2017-12-27 2019-12-10 Novatek Microelectronics Corp. Signal processing circuit for processing sensing signal from touch panel
KR102817370B1 (ko) * 2018-12-27 2025-06-10 주식회사 엘엑스세미콘 터치센싱장치 및 이를 포함하는 디스플레이 장치
CN110908536A (zh) * 2019-11-08 2020-03-24 深圳市维冠视界科技股份有限公司 一种电容触摸屏的抗干扰方法及其控制模块
TWI737216B (zh) * 2020-03-11 2021-08-21 大陸商北京集創北方科技股份有限公司 自電容檢測電路以及具有該電容檢測電路的資訊處理裝置

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KR100274772B1 (ko) * 1994-09-02 2000-12-15 제임스 엘 라우 물체 위치 검출기
KR100433362B1 (ko) * 2002-07-11 2004-06-07 에이디반도체(주) 임피던스 비교 집적회로
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Publication number Priority date Publication date Assignee Title
KR100274772B1 (ko) * 1994-09-02 2000-12-15 제임스 엘 라우 물체 위치 검출기
KR100433362B1 (ko) * 2002-07-11 2004-06-07 에이디반도체(주) 임피던스 비교 집적회로
KR20080078783A (ko) * 2007-02-24 2008-08-28 세이코 인스트루 가부시키가이샤 전류 미러 회로
KR20090055532A (ko) * 2009-04-20 2009-06-02 주식회사 포인칩스 터치센서의 정전용량 측정회로

Also Published As

Publication number Publication date
US20120092297A1 (en) 2012-04-19
KR20120040037A (ko) 2012-04-26
WO2012053749A2 (ko) 2012-04-26
KR101292733B1 (ko) 2013-08-05

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