KR101944151B1 - 커패시턴스 측정 - Google Patents

커패시턴스 측정 Download PDF

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Publication number
KR101944151B1
KR101944151B1 KR1020157001108A KR20157001108A KR101944151B1 KR 101944151 B1 KR101944151 B1 KR 101944151B1 KR 1020157001108 A KR1020157001108 A KR 1020157001108A KR 20157001108 A KR20157001108 A KR 20157001108A KR 101944151 B1 KR101944151 B1 KR 101944151B1
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South Korea
Prior art keywords
sensor electrode
input
charge
differential amplifier
capacitance
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Korean (ko)
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KR20150036089A (ko
Inventor
파자네 샤로키
애덤 슈왈츠
샤루즈 샤파니아
조셉 커스 레이놀즈
트레이스 스코트 다탈로
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시냅틱스 인코포레이티드
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    • 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
    • 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
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/24—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
    • 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
    • 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
    • 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

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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)
  • Electronic Switches (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
KR1020157001108A 2012-07-18 2013-07-12 커패시턴스 측정 Active KR101944151B1 (ko)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US201261673241P 2012-07-18 2012-07-18
US61/673,241 2012-07-18
US201261693541P 2012-08-27 2012-08-27
US61/693,541 2012-08-27
US13/843,129 US9182432B2 (en) 2012-07-18 2013-03-15 Capacitance measurement
US13/843,129 2013-03-15
PCT/US2013/050386 WO2014014785A1 (en) 2012-07-18 2013-07-12 Capacitance measurement

Publications (2)

Publication Number Publication Date
KR20150036089A KR20150036089A (ko) 2015-04-07
KR101944151B1 true KR101944151B1 (ko) 2019-01-30

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Family Applications (1)

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KR1020157001108A Active KR101944151B1 (ko) 2012-07-18 2013-07-12 커패시턴스 측정

Country Status (5)

Country Link
US (2) US9182432B2 (enExample)
JP (1) JP6112494B2 (enExample)
KR (1) KR101944151B1 (enExample)
CN (1) CN104603728B (enExample)
WO (1) WO2014014785A1 (enExample)

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US9823787B2 (en) * 2014-03-11 2017-11-21 Synaptics Incorporated Absolute capacitive sensing using sensor electrode pre-emphasis
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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
KR102811755B1 (ko) 2017-02-03 2025-05-23 삼성디스플레이 주식회사 터치 센서 및 이를 구비한 디스플레이 장치
US10089514B1 (en) * 2017-03-31 2018-10-02 Synaptics Incorporated Adaptive reference for differential capacitive measurements
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CN109214252B (zh) * 2017-07-06 2021-11-09 敦泰电子有限公司 一种指纹感测电路及指纹感测装置
CN107942275A (zh) * 2017-12-13 2018-04-20 中国航空工业集团公司成都飞机设计研究所 一种激励截调式数控电容负载模拟电路
KR102533653B1 (ko) * 2017-12-14 2023-05-16 엘지디스플레이 주식회사 적분기, 터치 표시 장치 및 이의 구동 방법
CN110471578B (zh) * 2018-05-09 2024-08-13 恩智浦美国有限公司 湿度补偿的电容性传感电路
CN110727356B (zh) * 2018-06-28 2021-08-20 京东方科技集团股份有限公司 主动笔、触控输入系统及驱动方法
TW202009676A (zh) * 2018-08-14 2020-03-01 瑞鼎科技股份有限公司 觸碰感測裝置及觸碰感測方法
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Also Published As

Publication number Publication date
KR20150036089A (ko) 2015-04-07
JP6112494B2 (ja) 2017-04-12
JP2015530780A (ja) 2015-10-15
WO2014014785A1 (en) 2014-01-23
US9182432B2 (en) 2015-11-10
US20150323578A1 (en) 2015-11-12
US9958488B2 (en) 2018-05-01
CN104603728B (zh) 2016-11-16
CN104603728A (zh) 2015-05-06
US20140021966A1 (en) 2014-01-23

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