WO2016180148A1 - 指纹传感器及显示装置 - Google Patents
指纹传感器及显示装置 Download PDFInfo
- Publication number
- WO2016180148A1 WO2016180148A1 PCT/CN2016/079253 CN2016079253W WO2016180148A1 WO 2016180148 A1 WO2016180148 A1 WO 2016180148A1 CN 2016079253 W CN2016079253 W CN 2016079253W WO 2016180148 A1 WO2016180148 A1 WO 2016180148A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- sensing
- fingerprint sensor
- driving
- sensing electrode
- Prior art date
Links
Images
Classifications
-
- 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
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
-
- 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
-
- 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
-
- 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
- G06F3/0412—Digitisers structurally integrated in a display
Definitions
- the present invention relates to display technology, and in particular to a fingerprint sensor and a display device.
- Fingerprints are invariant features that are inherent in the human body, unique and distinguishable from others. It consists of a series of ridges and valleys on the surface of the fingertip skin. The details of the composition of these ridges and valleys usually include details such as the bifurcation of the ridge, the end of the ridge, the arch, the tent arch, the left hand, the right hand, the spiral or the double spin, which determine the uniqueness of the fingerprint pattern.
- the fingerprint recognition technology developed by it is an early technology used as personal authentication. According to different methods of fingerprint collection and input, fingerprint recognition technologies widely used and well-known include: optical imaging, thermal sensors, human body. Infrared sensors, etc.
- the fingerprint collection data in the fingerprint reading process is acquired in part, so that the fingerprint verification needs to perform multiple data collection, which is cumbersome, how to collect data in a small number of times or collect all data at a time. Or, in the same time, multiple data acquisition to improve accuracy is an urgent technical problem to be solved.
- a technical solution adopted to solve the technical problem of the present invention is a fingerprint sensor comprising: at least one driving electrode vertically disposed with respect to a desired direction of movement of a finger;
- a plurality of sensing electrodes a plurality of the sensing electrodes are disposed in parallel, and disposed perpendicular to the driving electrodes, and there is no overlap between the plurality of sensing electrodes and the driving electrodes; wherein the number of the driving electrodes is smaller than The number of sensing electrodes.
- One of the first sensing electrode and the second sensing electrode of each sensing electrode pair is connected to an input terminal of one inverter, and the other is connected to a forward input terminal of a differential amplifier, and the opposite The output of the phase comparator is coupled to the inverting input of the differential amplifier.
- a first shield electrode is disposed between each adjacent pair of sensing electrodes.
- the potential on the first shield electrode is 0V.
- the fingerprint sensor comprises two driving electrodes, which are respectively a first driving electrode and a second driving electrode; and the plurality of sensing electrodes are divided into two groups, which are a first sensing electrode group and a second sensing electrode group respectively.
- Each of the first sensing electrode groups is configured to receive a driving signal loaded on the first driving electrode, and is disposed between the first driving electrode and the second driving electrode;
- Each of the sensing electrodes of the two sensing electrode groups is configured to receive a driving signal loaded on the second driving electrode, and is disposed at a side of the second driving electrode away from the first sensing electrode group.
- the number of sensing electrodes in the first sensing electrode group is greater than the number of sensing electrodes in the second sensing electrode group.
- the fingerprint sensor further includes a processing unit configured to capture a time difference between the first sensing electrode group and the second sensing electrode group to determine a speed at which the finger is scraped.
- the potential on the second shield electrode is 0V.
- the fingerprint sensor further includes a sensor chip electrically connected to the sensing electrode and the driving electrode to provide signals for the sensing electrode and the driving electrode.
- a technical solution adopted to solve the technical problem of the present invention is a display device. Including the touch panel and the above fingerprint sensor.
- the touch panel includes a sensing electrode and a driving electrode, wherein the sensing electrode of the fingerprint sensor is disposed in the same layer and the same material as the sensing electrode on the touch panel; the driving electrode and the touch of the fingerprint sensor
- the drive electrodes on the panel are the same layer and the same material.
- the sensor chip is bound to the touch panel by using a conductive double-sided tape.
- the number of driving electrodes in the fingerprint sensor of the present invention is smaller than the number of the sensing electrodes, that is, one driving electrode corresponds to a plurality of sensing electrodes, when a driving signal is applied to one driving electrode, there will be a plurality of sensing electrodes. Receiving the drive signal can greatly improve the sensitivity of the fingerprint sensor.
- the display device of the present invention has the above-described fingerprint sensor, its performance is better.
- the embodiment provides a fingerprint sensor, which includes: At least one drive electrode (eg, Tx and Tx') disposed perpendicular to a desired direction of finger motion; a plurality of sense electrodes (eg, Rxn and Rxn' that detect fingerprint recess or bump position), multiple The sensing electrodes are disposed in parallel and disposed perpendicular to the driving electrodes, and there is no overlap between the plurality of sensing electrodes and the driving electrodes; wherein the number of the driving electrodes is smaller than the number of the sensing electrodes.
- At least one drive electrode eg, Tx and Tx'
- a plurality of sense electrodes eg, Rxn and Rxn' that detect fingerprint recess or bump position
- each of the two adjacent sensing electrodes in the row direction is a pair, one of which is the first sensing electrode Rxn and the other is the second sensing electrode Rxn', where n is An integer greater than or equal to 1.
- the fingerprint sensor includes two driving electrodes, which are a first driving electrode Tx and a second driving electrode Tx′ respectively; and the plurality of sensing electrodes are divided into two.
- Each of the first sensing electrode groups is configured to receive a driving signal loaded on the first driving electrode Tx
- the second sensing electrode is a first sensing electrode group and a second sensing electrode group.
- Each of the sensing electrodes of the group is for receiving a driving signal loaded on the second driving electrode Tx'.
- the finger When the finger is slid from the top to the fingerprint sensor (that is, the direction indicated by the arrow in FIG. 1), the finger is first scraped through the first sensing electrode group, and at this time, each sensing electrode pair in the first sensing electrode group
- the first sensing electrode Rxn and the second sensing electrode Rxn' receive the driving signal from the first driving electrode Tx at the same time, since the first sensing electrode Rxn and the second sensing electrode Rxn' of each sensing electrode pair have the same size Therefore, the capacitance of the first sensing electrode Rxn of each of the sensing electrodes is the same as the capacitance of the second sensing electrode Rxn', and the sensing capacitance of the two and the finger The same is true.
- each sensing electrode pair in the second sensing electrode group will receive the driving signal on the second driving electrode Tx', and at the same time in the second sensing electrode group.
- Each of the sensing electrodes will capture the time difference between the sensing electrodes and the corresponding sensing electrodes in the first sensing electrode group to determine the speed of the finger fingerprint during the scratching, thereby uniformly splicing the fingerprint images of different speeds to be scraped (also Is the unified fingerprint graphic).
- the sensing electrode of the fingerprint sensor in the embodiment is disposed in the same layer and the same material as the sensing electrode on the touch panel; the driving electrode of the fingerprint sensor is disposed in the same layer and the same material as the driving electrode on the touch panel.
- the sensor chip is bound to the touch panel by using a conductive double-sided tape.
- the bonding method of the conductive double-sided tape is simple in process and easy to operate.
- the embodiment provides a display device including the fingerprint sensor described in Embodiment 1. Therefore, the display device of the embodiment has high touch sensitivity.
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Image Input (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Description
Claims (14)
- 一种指纹传感器,其特征在于,包括:至少一个驱动电极,其相对于手指运动的期望方向垂直设置;多个感应电极,多个所述感应电极平行设置,且与所述驱动电极垂直设置,多个所述感应电极与所述驱动电极之间无交叠;其中,所述驱动电极的数量小于所述感应电极的数量。
- 根据权利要求1所述的指纹传感器,其特征在于,在行方向上每两个相邻的所述感应电极构成为一个感应电极对,其中一者为第一感应电极,另一者为第二感应电极,所述指纹传感器还包括:多个反相器和多个差分放大器;每个感应电极对中的所述第一感应电极和所述第二感应电极中的一者连接一个反相器的输入端,另一者连接一个差分放大器的正向输入端,且反相器的输出端连接至所述差分放大器的反向输入端。
- 根据权利要求2所述的指纹传感器,其特征在于,在每相邻的两个感应电极对之间设置有一个第一屏蔽电极。
- 根据权利要求3所述的指纹传感器,其特征在于,所述第一屏蔽电极上的电位为0V。
- 根据权利要求1-4中任一所述的指纹传感器,其特征在于,所述指纹传感器包括两个驱动电极,分别为第一驱动电极和第二驱动电极;所述多个感应电极分为两组,分别为第一感应电极组和第二感应电极组;其中,所述第一感应电极组中的各个感应电极用于接收第一驱动电极上加载的驱动信号,且设置在所述第一驱动电极和所述第二驱动电极之间;所述第二感应电极组的各个感应电极用于接收第二驱动电极上加载的驱动信号,且设置在所 述第二驱动电极远离所述第一感应电极组的一侧。
- 根据权利要求5所述的指纹传感器,其特征在于,所述第一感应电极组中的感应电极的数量大于所述第二感应电极组中感应电极的数量。
- 根据权利要求5所述的指纹传感器,其特征在于,所述指纹传感器还包括处理单元,用于抓取计算第一感应电极组到第二感应电极组之间的时间差,以判断手指刮擦的速度。
- 根据权利要求5所述的指纹传感器,其特征在于,在所述第一驱动电极远离所述第一感应电极组的一侧设置有一个第二屏蔽电极,以及在所述第二驱动电极和所述第一感应电极组之间设置有另一第二屏蔽电极。
- 根据权利要求8所述的指纹传感器,其特征在于,所述第二屏蔽电极上的电位均为0V。
- 根据权利要求1所述的指纹传感器,其特征在于,所述指纹传感器还包括传感器芯片,所述传感器芯片与所述感应电极和驱动电极电性连接,以为所述感应电极和驱动电极提供信号。
- 一种显示装置,包括触控面板,其特征在于,所述显示装置还包括权利要求1-9中任一项所述的指纹传感器。
- 根据权利要求11所述的显示装置,所述触控面板包括感应电极和驱动电极,其特征在于,所述指纹传感器的感应电极与触控面板上的感应电极同层设置且材料相同;所述指纹传感器的驱动电极与触控面板上的驱动电极同层设置且材料相同。
- 一种显示装置,包括触控面板,其特征在于,所述显示装置还包括权利要求10所述的指纹传感器。
- 根据权利要求13所述的显示装置,其特征在于,所述传感器芯片采用导电双面胶绑定在触控面板上。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/511,403 US10204256B2 (en) | 2015-05-08 | 2016-04-14 | Fingerprint sensor and display apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510232883.3A CN104809448B (zh) | 2015-05-08 | 2015-05-08 | 指纹传感器及显示装置 |
CN201510232883.3 | 2015-05-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016180148A1 true WO2016180148A1 (zh) | 2016-11-17 |
Family
ID=53694259
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2016/079253 WO2016180148A1 (zh) | 2015-05-08 | 2016-04-14 | 指纹传感器及显示装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US10204256B2 (zh) |
CN (1) | CN104809448B (zh) |
WO (1) | WO2016180148A1 (zh) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104809448B (zh) * | 2015-05-08 | 2017-03-15 | 京东方科技集团股份有限公司 | 指纹传感器及显示装置 |
US10229304B2 (en) * | 2015-06-05 | 2019-03-12 | Synaptics Incorporated | Finger detection with auto-baseline tracking |
CN105138207A (zh) * | 2015-09-23 | 2015-12-09 | 深圳信炜科技有限公司 | 电容式传感器的传感单元 |
JP6684167B2 (ja) * | 2016-06-27 | 2020-04-22 | 株式会社ジャパンディスプレイ | 表示装置 |
KR102625444B1 (ko) * | 2016-08-03 | 2024-01-15 | 삼성전자주식회사 | 반도체 장치 |
CN106226961B (zh) * | 2016-09-29 | 2019-09-13 | 深圳市华星光电技术有限公司 | 一种coa阵列基板及显示装置 |
KR102508964B1 (ko) * | 2018-01-31 | 2023-03-14 | 삼성디스플레이 주식회사 | 표시 장치 |
KR102568725B1 (ko) * | 2018-08-06 | 2023-08-22 | 삼성디스플레이 주식회사 | 표시장치 |
TWI688899B (zh) * | 2018-11-05 | 2020-03-21 | 友達光電股份有限公司 | 指紋辨識模組及應用其之指紋辨識觸控顯示器 |
EP3862856A1 (en) | 2019-12-26 | 2021-08-11 | Shenzhen Goodix Technology Co., Ltd. | Capacitance measurement circuit, touch chip, and electronic device |
WO2022133810A1 (zh) * | 2020-12-23 | 2022-06-30 | 京东方科技集团股份有限公司 | 显示背板及其制作方法、显示面板和显示装置 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101079099A (zh) * | 2006-05-24 | 2007-11-28 | 芯微技术(深圳)有限公司 | 滑动式半导体指纹采集器件及其降噪方法 |
US20140218327A1 (en) * | 2012-04-29 | 2014-08-07 | Weidong Shi | Method and Apparatuses of Transparent Fingerprint Imager Integrated with Touch Display Device |
CN104050465A (zh) * | 2014-07-02 | 2014-09-17 | 南昌欧菲生物识别技术有限公司 | 指纹识别传感器及电子装置 |
CN104376299A (zh) * | 2014-10-16 | 2015-02-25 | 北京集创北方科技有限公司 | 一种指纹识别传感器 |
CN104809448A (zh) * | 2015-05-08 | 2015-07-29 | 京东方科技集团股份有限公司 | 指纹传感器及显示装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NO304766B1 (no) * | 1997-06-16 | 1999-02-08 | Sintef | Fingeravtrykksensor |
US7184581B2 (en) * | 2000-06-09 | 2007-02-27 | Idex Asa | System for real time finger surface pattern measurement |
WO2003049011A1 (en) * | 2001-12-07 | 2003-06-12 | Idex Asa | Sensor for measurement on wet and dry fingers |
US9633247B2 (en) * | 2012-03-01 | 2017-04-25 | Apple Inc. | Electronic device with shared near field communications and sensor structures |
CN104318210B (zh) * | 2014-10-13 | 2017-11-24 | 上海思立微电子科技有限公司 | 一种指纹识别传感器及指纹检测方法 |
US9576177B2 (en) * | 2014-12-11 | 2017-02-21 | Fingerprint Cards Ab | Fingerprint sensing device |
US10229304B2 (en) * | 2015-06-05 | 2019-03-12 | Synaptics Incorporated | Finger detection with auto-baseline tracking |
-
2015
- 2015-05-08 CN CN201510232883.3A patent/CN104809448B/zh active Active
-
2016
- 2016-04-14 WO PCT/CN2016/079253 patent/WO2016180148A1/zh active Application Filing
- 2016-04-14 US US15/511,403 patent/US10204256B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101079099A (zh) * | 2006-05-24 | 2007-11-28 | 芯微技术(深圳)有限公司 | 滑动式半导体指纹采集器件及其降噪方法 |
US20140218327A1 (en) * | 2012-04-29 | 2014-08-07 | Weidong Shi | Method and Apparatuses of Transparent Fingerprint Imager Integrated with Touch Display Device |
CN104050465A (zh) * | 2014-07-02 | 2014-09-17 | 南昌欧菲生物识别技术有限公司 | 指纹识别传感器及电子装置 |
CN104376299A (zh) * | 2014-10-16 | 2015-02-25 | 北京集创北方科技有限公司 | 一种指纹识别传感器 |
CN104809448A (zh) * | 2015-05-08 | 2015-07-29 | 京东方科技集团股份有限公司 | 指纹传感器及显示装置 |
Also Published As
Publication number | Publication date |
---|---|
US10204256B2 (en) | 2019-02-12 |
US20170286740A1 (en) | 2017-10-05 |
CN104809448B (zh) | 2017-03-15 |
CN104809448A (zh) | 2015-07-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2016180148A1 (zh) | 指纹传感器及显示装置 | |
EP3153954B1 (en) | Embedded touchscreen drive method, drive device, and display device | |
US8787632B2 (en) | Apparatus and method for reducing noise in fingerprint sensing circuits | |
US9618981B2 (en) | Guarding and shielding routing traces in proximity sensors | |
CN104376299B (zh) | 一种指纹识别传感器 | |
US10013594B2 (en) | Fingerprint identification device, touch panel and display device | |
US20140362036A1 (en) | Capacitive touch screen | |
CN106249973B (zh) | 一种内嵌式触摸屏、其驱动方法及显示装置 | |
WO2019000531A1 (zh) | 触控显示面板及触控显示装置 | |
WO2017214901A1 (zh) | 压力检测装置、方法、触控设备及电子终端 | |
US9811178B2 (en) | Stylus signal detection and demodulation architecture | |
JP2014238818A (ja) | 静電容量式タッチ画面 | |
WO2019023941A1 (zh) | 触控位置的确定方法、电容触控装置以及电容触控终端 | |
US10338754B2 (en) | Edge-effect mitigation for capacitive sensors | |
TWI805694B (zh) | 降低感測電極的電磁放射 | |
CN107305445B (zh) | 触控杂讯滤除的方法以及触控装置 | |
US9817502B2 (en) | Switched-capacitor harmonic-reject mixer | |
US20160154522A1 (en) | Field shaping touch sensor | |
TW202028935A (zh) | 光學指紋感測裝置及資訊處理裝置 | |
WO2018049778A1 (zh) | 压力检测装置及电子终端 | |
US11519801B1 (en) | Sensor device for transcapacitive sensing with shielding | |
KR101855648B1 (ko) | 향상된 지문 인식 센서 및 이에 포함되는 전하 누적 감지 회로 | |
US11662867B1 (en) | Hover detection on a touch sensor panel | |
TWI512585B (zh) | 電容式觸控板及其製造方法 | |
KR20180015400A (ko) | 반도체 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16791998 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15511403 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16791998 Country of ref document: EP Kind code of ref document: A1 |
|
32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 200418) |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16791998 Country of ref document: EP Kind code of ref document: A1 |