CN105046194B - 一种包含积分器的电容指纹传感器 - Google Patents
一种包含积分器的电容指纹传感器 Download PDFInfo
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- CN105046194B CN105046194B CN201510309222.6A CN201510309222A CN105046194B CN 105046194 B CN105046194 B CN 105046194B CN 201510309222 A CN201510309222 A CN 201510309222A CN 105046194 B CN105046194 B CN 105046194B
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- fingerprint sensor
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- 239000003990 capacitor Substances 0.000 claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000003071 parasitic effect Effects 0.000 claims abstract description 9
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 11
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 14
- 230000010354 integration Effects 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012886 linear function Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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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
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
-
- 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
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1306—Sensors therefor non-optical, e.g. ultrasonic or capacitive sensing
Abstract
Description
Claims (12)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510309222.6A CN105046194B (zh) | 2015-06-08 | 2015-06-08 | 一种包含积分器的电容指纹传感器 |
TW105116226A TWI630533B (zh) | 2015-06-08 | 2016-05-24 | 一種包含積分器之電容指紋傳感器 |
US15/230,368 US10074004B2 (en) | 2015-06-08 | 2016-08-05 | Capacitive fingerprint sensor with integrator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510309222.6A CN105046194B (zh) | 2015-06-08 | 2015-06-08 | 一种包含积分器的电容指纹传感器 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105046194A CN105046194A (zh) | 2015-11-11 |
CN105046194B true CN105046194B (zh) | 2020-04-10 |
Family
ID=54452723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510309222.6A Active CN105046194B (zh) | 2015-06-08 | 2015-06-08 | 一种包含积分器的电容指纹传感器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10074004B2 (zh) |
CN (1) | CN105046194B (zh) |
TW (1) | TWI630533B (zh) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105335737B (zh) * | 2015-12-02 | 2019-03-15 | 苏州迈瑞微电子有限公司 | 电容指纹传感器 |
CN106775143B (zh) * | 2015-12-31 | 2020-01-03 | 深圳市汇顶科技股份有限公司 | 积分电路及电容感测电路 |
KR20170102668A (ko) * | 2016-03-02 | 2017-09-12 | 삼성전자주식회사 | 지문 감지 센서, 이를 포함하는 전자 장치 및 지문 감지 센서의 동작 방법 |
CN107368773A (zh) * | 2016-05-12 | 2017-11-21 | 戴孟均 | 一种指纹传感器及应用其的智能设备 |
EP3321848B1 (en) | 2016-09-27 | 2019-12-25 | Shenzhen Goodix Technology Co., Ltd. | Capacitive sensing circuit |
WO2018058335A1 (zh) * | 2016-09-27 | 2018-04-05 | 深圳市汇顶科技股份有限公司 | 电容感测电路 |
KR102028267B1 (ko) | 2016-10-27 | 2019-10-02 | 선전 구딕스 테크놀로지 컴퍼니, 리미티드 | 정전용량식 지문 센서 |
US10395084B2 (en) * | 2017-09-29 | 2019-08-27 | Superc-Touch Corporation | Fingerprint identification device |
CN107688798B (zh) * | 2017-09-30 | 2023-10-17 | 苏州迈瑞微电子有限公司 | 一种电荷型传感器和具有其的传感器阵列及积分电路失配调整参数的获取方法 |
CN107704827B (zh) * | 2017-09-30 | 2024-03-12 | 苏州迈瑞微电子有限公司 | 一种光电传感器和具有其的光电传感器阵列 |
CN107980141B (zh) | 2017-10-18 | 2021-12-17 | 深圳市汇顶科技股份有限公司 | 指纹传感器和终端设备 |
CN109697398B (zh) * | 2017-10-24 | 2023-09-01 | 苏州迈瑞微电子有限公司 | 一种传感器传感方法、电子装置、存储介质和终端设备 |
WO2019090481A1 (zh) * | 2017-11-07 | 2019-05-16 | 深圳市汇顶科技股份有限公司 | 指纹传感器和终端设备 |
CN109460726B (zh) * | 2018-10-31 | 2020-07-31 | 上海海栎创微电子有限公司 | 一种电容式指纹信号的差分采集放大电路及其工作方法 |
CN109631956A (zh) * | 2018-12-27 | 2019-04-16 | 苏州迈瑞微电子有限公司 | 一种电容式传感器及其校正方法 |
US11301708B2 (en) * | 2019-10-01 | 2022-04-12 | Novatek Microelectronics Corp. | Image sensing circuit and method |
CN112929017B (zh) * | 2021-02-02 | 2023-08-18 | 同源微(北京)半导体技术有限公司 | 一种提升复位速度的积分器电路 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8319505B1 (en) * | 2008-10-24 | 2012-11-27 | Cypress Semiconductor Corporation | Methods and circuits for measuring mutual and self capacitance |
US8624870B2 (en) * | 2010-04-22 | 2014-01-07 | Maxim Integrated Products, Inc. | System for and method of transferring charge to convert capacitance to voltage for touchscreen controllers |
WO2013001920A1 (en) * | 2011-06-29 | 2013-01-03 | Sharp Kabushiki Kaisha | Touch sensor system and electronic device |
US9958986B2 (en) * | 2011-12-28 | 2018-05-01 | Silicon Works Co., Ltd. | Touch sensing apparatus |
CN102954753B (zh) * | 2012-10-22 | 2015-09-09 | 苏州迈瑞微电子有限公司 | 电容式距离传感器 |
CN103714330B (zh) * | 2014-01-06 | 2017-12-19 | 苏州迈瑞微电子有限公司 | 电容指纹传感器 |
-
2015
- 2015-06-08 CN CN201510309222.6A patent/CN105046194B/zh active Active
-
2016
- 2016-05-24 TW TW105116226A patent/TWI630533B/zh active
- 2016-08-05 US US15/230,368 patent/US10074004B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
TWI630533B (zh) | 2018-07-21 |
CN105046194A (zh) | 2015-11-11 |
US20170235993A1 (en) | 2017-08-17 |
TW201702850A (zh) | 2017-01-16 |
US10074004B2 (en) | 2018-09-11 |
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Effective date of registration: 20211118 Address after: 510700 room 635, room 406, No. 1, Yichuang street, Huangpu District, Guangzhou City, Guangdong Province (Zhongxin Guangzhou Knowledge City) Patentee after: Guangzhou guotongxin Microelectronics Co.,Ltd. Address before: Room 230, Qinmin building, 166 Ren'ai Road, Suzhou Industrial Park, Jiangsu 215000 Patentee before: MICROARRAY MICROELECTRONICS Corp.,Ltd. |
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Denomination of invention: A capacitive fingerprint sensor with integrator Effective date of registration: 20230113 Granted publication date: 20200410 Pledgee: Bank of China Limited Guangzhou Development Zone Branch Pledgor: Guangzhou guotongxin Microelectronics Co.,Ltd. Registration number: Y2023980030959 |
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PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20200410 Pledgee: Bank of China Limited Guangzhou Development Zone Branch Pledgor: Guangzhou guotongxin Microelectronics Co.,Ltd. Registration number: Y2023980030959 |