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 PDFInfo
- 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
- Authority
- CN
- China
- Prior art keywords
- signal
- driving
- detection circuit
- capacitive detection
- 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.)
- Granted
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Classifications
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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
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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
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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
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
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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
-
- 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
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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
- 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)
- PCT国内申请,权利要求书已公开。
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN109564492A true CN109564492A (zh) | 2019-04-02 |
CN109564492B CN109564492B (zh) | 2022-03-25 |
Family
ID=63447178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201780000160.8A Active CN109564492B (zh) | 2017-03-09 | 2017-03-09 | 电容检测电路及电子装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10712888B2 (zh) |
EP (1) | EP3441860A4 (zh) |
CN (1) | CN109564492B (zh) |
WO (1) | WO2018161307A1 (zh) |
Families Citing this family (2)
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 |
Citations (7)
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 |
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 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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2017
- 2017-03-09 CN CN201780000160.8A patent/CN109564492B/zh active Active
- 2017-03-09 WO PCT/CN2017/076134 patent/WO2018161307A1/zh active Application Filing
- 2017-03-09 EP EP17899777.1A patent/EP3441860A4/en active Pending
-
2018
- 2018-11-02 US US16/179,271 patent/US10712888B2/en active Active
Patent Citations (7)
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 |
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 |
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 |
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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