CN112601966A - 电容检测电路、触摸检测装置和电子设备 - Google Patents
电容检测电路、触摸检测装置和电子设备 Download PDFInfo
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- CN112601966A CN112601966A CN201980001411.3A CN201980001411A CN112601966A CN 112601966 A CN112601966 A CN 112601966A CN 201980001411 A CN201980001411 A CN 201980001411A CN 112601966 A CN112601966 A CN 112601966A
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- 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
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- 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
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- 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
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
-
- 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
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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
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/960705—Safety of capacitive touch and proximity switches, e.g. increasing reliability, fail-safe
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/96—Touch switches
- H03K2217/9607—Capacitive touch switches
- H03K2217/96071—Capacitive touch switches characterised by the detection principle
Abstract
一种电容检测电路(100),具有更优的检测性能。所述电容检测电路(100)包括:第一充放电电路(110),用于对待测电容器(111)进行充放电;第二充放电电路(120),用于对校准电容器(121)进行充放电;模数转换电路(130),用于对充放电过程中所述待测电容器(111)和所述校准电容器(121)的电压差进行连续采样,得到采样数据;数字处理电路(140),用于根据所述采样数据,检测所述待测电容器(111)的电容。
Description
PCT国内申请,说明书已公开。
Claims (24)
- PCT国内申请,权利要求书已公开。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/CN2019/098922 WO2021017003A1 (zh) | 2019-08-01 | 2019-08-01 | 电容检测电路、触摸检测装置和电子设备 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112601966A true CN112601966A (zh) | 2021-04-02 |
CN112601966B CN112601966B (zh) | 2022-09-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201980001411.3A Active CN112601966B (zh) | 2019-08-01 | 2019-08-01 | 电容检测电路、触摸检测装置和电子设备 |
Country Status (4)
Country | Link |
---|---|
US (1) | US11481072B2 (zh) |
EP (1) | EP3798645B1 (zh) |
CN (1) | CN112601966B (zh) |
WO (1) | WO2021017003A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20210018723A (ko) * | 2019-08-09 | 2021-02-18 | 삼성디스플레이 주식회사 | 터치 구동 회로 및 이를 포함하는 표시 장치 |
US11722137B1 (en) * | 2020-10-02 | 2023-08-08 | Meta Platforms Technologies, Llc | Variable-distance proximity detector |
KR20230083399A (ko) * | 2021-12-02 | 2023-06-12 | 삼성디스플레이 주식회사 | 센서 장치 및 그 구동 방법 |
Citations (9)
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SU1567999A1 (ru) * | 1988-05-31 | 1990-05-30 | Ленинградский Институт Авиационного Приборостроения | Устройство дл измерени внутреннего сопротивлени конденсатора |
CN102539049A (zh) * | 2012-01-16 | 2012-07-04 | 中北大学 | 电容式压力测试仪 |
TW201447709A (zh) * | 2013-06-11 | 2014-12-16 | Pixart Imaging Inc | 電容偵測電路以及使用此電容偵測電路的電能供應裝置 |
CN107251043A (zh) * | 2014-11-17 | 2017-10-13 | 赛普拉斯半导体公司 | 具有正交解调器和多相扫描的电容性指纹传感器 |
WO2017190052A1 (en) * | 2016-04-29 | 2017-11-02 | Synaptics Incorporated | Differential force and touch sensing |
CN107450763A (zh) * | 2016-05-30 | 2017-12-08 | 辛纳普蒂克斯公司 | 触摸检测电路以及半导体装置 |
CN107679444A (zh) * | 2016-08-02 | 2018-02-09 | 三星电子株式会社 | 指纹传感器的模拟前端电路以及具有模拟前端电路的装置 |
CN109144335A (zh) * | 2018-08-29 | 2019-01-04 | 基合半导体(宁波)有限公司 | 一种触摸屏、检测方法以及移动终端 |
CN109496273A (zh) * | 2018-01-24 | 2019-03-19 | 深圳市汇顶科技股份有限公司 | 电容检测电路、触摸检测装置和终端设备 |
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DE19957303B4 (de) * | 1999-11-29 | 2006-05-11 | Infineon Technologies Ag | MOS-Transistor und Verfahren zu dessen Herstellung |
GB2436389A (en) * | 2006-03-23 | 2007-09-26 | Sharp Kk | Active matrix liquid crystal device with temperature measuring capacitor |
US9298303B2 (en) * | 2009-12-31 | 2016-03-29 | Google Technology Holdings LLC | Duty cycle modulation of periodic time-synchronous receivers for noise reduction |
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US8896327B2 (en) | 2012-04-12 | 2014-11-25 | Atmel Corporation | Current mirror self-capacitance measurement |
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US10175334B2 (en) * | 2013-12-13 | 2019-01-08 | National Instruments Corporation | Self-calibration of source-measure unit via capacitor |
US20170090609A1 (en) * | 2015-09-25 | 2017-03-30 | Synaptics Incorporated | Oversampled step and wait system for capacitive sensing |
CN106020548B (zh) * | 2016-05-27 | 2019-02-22 | 京东方科技集团股份有限公司 | 一种触控检测装置、触控显示装置及触控检测方法 |
TW201901392A (zh) * | 2017-05-09 | 2019-01-01 | 新益先創科技股份有限公司 | 生物特徵感測裝置 |
CN208506138U (zh) * | 2018-01-24 | 2019-02-15 | 深圳市汇顶科技股份有限公司 | 电容检测电路、触摸检测装置和终端设备 |
-
2019
- 2019-08-01 CN CN201980001411.3A patent/CN112601966B/zh active Active
- 2019-08-01 EP EP19918497.9A patent/EP3798645B1/en active Active
- 2019-08-01 WO PCT/CN2019/098922 patent/WO2021017003A1/zh unknown
-
2020
- 2020-09-14 US US17/019,573 patent/US11481072B2/en active Active
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SU1567999A1 (ru) * | 1988-05-31 | 1990-05-30 | Ленинградский Институт Авиационного Приборостроения | Устройство дл измерени внутреннего сопротивлени конденсатора |
CN102539049A (zh) * | 2012-01-16 | 2012-07-04 | 中北大学 | 电容式压力测试仪 |
TW201447709A (zh) * | 2013-06-11 | 2014-12-16 | Pixart Imaging Inc | 電容偵測電路以及使用此電容偵測電路的電能供應裝置 |
CN107251043A (zh) * | 2014-11-17 | 2017-10-13 | 赛普拉斯半导体公司 | 具有正交解调器和多相扫描的电容性指纹传感器 |
WO2017190052A1 (en) * | 2016-04-29 | 2017-11-02 | Synaptics Incorporated | Differential force and touch sensing |
CN107450763A (zh) * | 2016-05-30 | 2017-12-08 | 辛纳普蒂克斯公司 | 触摸检测电路以及半导体装置 |
CN107679444A (zh) * | 2016-08-02 | 2018-02-09 | 三星电子株式会社 | 指纹传感器的模拟前端电路以及具有模拟前端电路的装置 |
CN109496273A (zh) * | 2018-01-24 | 2019-03-19 | 深圳市汇顶科技股份有限公司 | 电容检测电路、触摸检测装置和终端设备 |
CN109144335A (zh) * | 2018-08-29 | 2019-01-04 | 基合半导体(宁波)有限公司 | 一种触摸屏、检测方法以及移动终端 |
Also Published As
Publication number | Publication date |
---|---|
US11481072B2 (en) | 2022-10-25 |
WO2021017003A1 (zh) | 2021-02-04 |
EP3798645A4 (en) | 2021-04-28 |
EP3798645B1 (en) | 2022-04-27 |
EP3798645A1 (en) | 2021-03-31 |
CN112601966B (zh) | 2022-09-13 |
US20210034179A1 (en) | 2021-02-04 |
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