WO2017142161A1 - Capteur de reconnaissance d'empreinte digitale transparent intégré d'écran tactile - Google Patents

Capteur de reconnaissance d'empreinte digitale transparent intégré d'écran tactile Download PDF

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Publication number
WO2017142161A1
WO2017142161A1 PCT/KR2016/011545 KR2016011545W WO2017142161A1 WO 2017142161 A1 WO2017142161 A1 WO 2017142161A1 KR 2016011545 W KR2016011545 W KR 2016011545W WO 2017142161 A1 WO2017142161 A1 WO 2017142161A1
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WO
WIPO (PCT)
Prior art keywords
fingerprint recognition
pattern
touch screen
touch
fingerprint
Prior art date
Application number
PCT/KR2016/011545
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English (en)
Korean (ko)
Inventor
김홍채
이광구
Original Assignee
주식회사 트레이스
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Filing date
Publication date
Application filed by 주식회사 트레이스 filed Critical 주식회사 트레이스
Publication of WO2017142161A1 publication Critical patent/WO2017142161A1/fr

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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

Definitions

  • the present invention relates to a touch-integrated transparent fingerprint recognition sensor capable of recognizing a fingerprint on a touch screen screen.
  • the fingerprint recognition function is applied to industries requiring high security, such as mobile payment and bank transactions in the future, attracting attention as a representative technology that will lead the trend of the future market.
  • Fingerprint recognition touch sensor is a method or an opaque form that requires an optical camera
  • the fingerprint recognition technology applied to smart phones, tablet PCs, etc. according to the prior art are all separately a touch screen sensor module and a fingerprint recognition sensor module It is a structure.
  • the touch screen and the fingerprint sensor must overlap each other. If the fingerprint sensor is formed by overlapping the touch screen, the touch screen is affected. There is a problem that the touch screen does not operate in the region.
  • the present invention has been proposed in order to solve the above-mentioned problems, while implementing a transparent fingerprint sensor on the touch screen, but the touch-integrated fingerprint recognition to ensure a uniform transmittance, and to operate the natural touch screen function in the fingerprint recognition area
  • the purpose is to provide a sensor.
  • Touch integrated transparent fingerprint recognition sensor is based on the touch screen transmission pattern disposed on the lower surface of the transparent substrate, the fingerprint recognition transmission pattern disposed on the upper surface of the transparent substrate, the layer on which the fingerprint recognition transmission pattern is disposed It is disposed on the upper surface, and characterized in that it comprises a fingerprint recognition receiving pattern disposed in the fingerprint recognition area corresponding to the fingerprint recognition transmission pattern and a touch screen receiving pattern disposed in an area other than the fingerprint recognition area.
  • the touch-integrated transparent fingerprint recognition sensor according to the present invention is integrated with the touch screen to implement a transparent fingerprint recognition, it is possible to implement a user interface that allows users to operate the device more intuitively and efficiently, various additional modifications
  • the application can be provided through the effect.
  • FIG. 1 is a conceptual diagram illustrating a touch area and a fingerprint recognition area according to an embodiment of the present invention.
  • FIG. 2 is an exemplary view showing a touch-integrated fingerprint sensor according to an embodiment of the present invention.
  • FIG. 3 is a side cross-sectional view showing a touch-integrated fingerprint sensor according to an embodiment of the present invention.
  • FIG. 4 is a view showing each layer constituting the touch-integrated fingerprint sensor according to an embodiment of the present invention.
  • FIG. 5 is a diagram illustrating a bar pattern according to an exemplary embodiment of the present invention.
  • FIG. 6 is a view showing a diamond pattern according to an embodiment of the present invention.
  • FIG. 7 is a conceptual diagram illustrating light transmission of a diamond pattern fingerprint recognition according to an embodiment of the present invention.
  • FIG. 8 is a conceptual diagram illustrating light transmission of bar pattern fingerprint recognition according to an embodiment of the present invention.
  • FIG. 9 is a view showing a touch-integrated fingerprint sensor according to an embodiment of the present invention.
  • FIG. 10 illustrates a fingerprint recognition transmission pattern in a touch screen mode according to an embodiment of the present invention.
  • FIG. 11 is a diagram illustrating a fingerprint recognition reception pattern in the touch screen mode according to an embodiment of the present invention.
  • FIG. 12 illustrates a fingerprint recognition pattern and a touch screen pattern in the fingerprint recognition mode according to an embodiment of the present invention.
  • FIG. 13 is a flowchart illustrating a touch-integrated fingerprint recognition sensing method according to an embodiment of the present invention.
  • FIG. 14 to 17 are views illustrating a structure of a touch-integrated transparent fingerprint recognition sensor according to another embodiment of the present invention.
  • FIG. 1 is a conceptual diagram illustrating a touch area and a fingerprint recognition area according to an embodiment of the present invention.
  • the touch area 20 disposed in the cover window 10 of the smart device and the fingerprint recognition area 30 on the screen arranged in the specific area are included.
  • the present invention proposes a design for smoothly performing the fingerprint recognition operation and the touch screen operation.
  • FIG. 2 is an exemplary view showing a touch-integrated fingerprint sensor according to an embodiment of the present invention.
  • the entire area recognizes the touch
  • the fingerprint recognition is performed in the fingerprint recognition area
  • the touch screen function is performed in the remaining areas.
  • the fingerprint recognition method in the fingerprint recognition area 30 shown in FIG. 1 is basically the same as the operation method of the capacitive touch screen, and transmits a signal in a Tx channel and a Rx channel. Receives a signal from, according to the capacitive touch method for recognizing the curvature of the fingerprint.
  • the transmission pattern of the touch screen has a width of 5 mm or less
  • the reception pattern is implemented with transparent conductive electrodes (ITO, AgNW, Metal Mesh, etc.) having a width of 1 mm or less.
  • the transmission pattern and the reception pattern of the fingerprint recognition are formed to have a pitch of about 50 micrometers to secure a resolution of 500 dpi.
  • touch screen patterns 230 and 240 are formed over the entire screen, and fingerprint recognition patterns 330 and 340 are formed in the fingerprint recognition area, and some touch screen reception patterns 240 and fingerprint recognition reception are performed.
  • the fingerprint recognition pattern 340 functions as a touch screen reception pattern in the touch screen mode.
  • the touch screen transmission pattern 230 is disposed over the entire area including the bottom of the fingerprint recognition pattern, and the touch screen reception pattern 240 does not exist in the fingerprint recognition area.
  • FIG. 3 Side cross-sectional view based on AA ′ shown in FIG. 2 is as shown in FIG. 3.
  • FIG 3 is a side cross-sectional view showing a touch-integrated fingerprint sensor according to an embodiment of the present invention
  • Figure 4 is a view showing each layer constituting the touch-integrated fingerprint sensor in accordance with an embodiment of the present invention.
  • a touch screen transmission layer 250 is formed on the bottom surface of the transparent substrate 500 formed of glass, PET, or the like, and a touch screen transmission pattern 230 that is a transmission sensor of the touch screen is formed.
  • the transparent sensor channel may be formed using various transparent electrode materials such as ITO, AgNW, CNT, or various touch screen electrode materials such as metal mesh.
  • the touch screen transmission layer 250 preferably serves as a shield layer that blocks the entire surface of the electrode, such as a bar pattern, by an electrode to prevent noise from rising from the lower display.
  • the noise of the lower display or the like is low and the role of the shield is unnecessary, it may not be formed in a bar pattern.
  • a fingerprint recognition transmission layer 350 is formed on an upper surface of the transparent substrate 500, a fingerprint recognition transmission pattern 330, which is a fingerprint recognition transmission sensor, is formed, and an insulator 600 is formed.
  • the fingerprint recognition pattern 330 is formed to have a pattern of several to several tens of micrometers so that fine fingerprints can be recognized, and its channel direction is formed to be parallel to the channel direction of the touch screen transmission pattern 230.
  • a fingerprint recognition receiving pattern 340 which is a fingerprint recognition receiving sensor, is formed on the upper surface of the fingerprint recognition area, and a touch screen receiving pattern 240, which is a reception sensor for touch screen, is formed on the touch area that is other than that.
  • the fingerprint recognition pattern 340 formed on the reception layer 400 has a pattern of several to several tens of micrometers for fine fingerprint recognition, and the channel direction of the fingerprint recognition pattern 340 is a touch screen reception pattern ( It is formed parallel to the channel direction of 240.
  • the touch screen receiving pattern 240 is not formed in the fingerprint recognition area 30.
  • the sensor structure is implemented as shown in Figs.
  • an OCA 300 for adhering an upper cover window 200, an opaque black matrix disposed on a portion of a rear surface thereof, a transparent film 800 such as PET / PC, and the upper cover window 200 are attached. ) Is included.
  • the touch Tx 720 is disposed on the lower surface of the transparent film 800, and the fingerprint sensor 500 and the touch Rx 710 are disposed on the upper surface of the transparent film 800.
  • the fingerprint sensor layer and the touch layer are composed of two films.
  • the transparent film 800a is disposed on the fingerprint sensor layer and the transparent film 800b is disposed on the touch layer.
  • the OCA 300a is a component for adhering the upper cover window 200 and the transparent film 800a
  • the OCA 300b is a component for adhering the fingerprint sensor layer and the touch layer.
  • the fingerprint sensor 500 is formed on the upper cover window 200 at the top, and the touch screen is formed on both sides of the film 800 such as glass and PET. As illustrated in FIG. 17, the touch Rx 710 extends below the fingerprint sensor 500.
  • the fingerprint sensor 500 is formed on the upper cover window 200 at the top, and the touch screen is formed on two transparent films 800a and 800b.
  • the fingerprint recognition area when the fingerprint recognition pattern performs the touch screen reception pattern function in the touch screen mode, the fingerprint recognition area also functions as a touch screen.
  • the fingerprint recognition transmission pattern 330 and the reception pattern 340 may be formed in various forms, but as shown in FIGS. 3 and 4, according to an embodiment of the present invention, the diamond pattern may be a diamond-shaped continuous pattern. It is formed in a pattern which does not overlap the transmission / reception pattern.
  • a sensor channel is formed such that transmission and reception channels are orthogonal to each other, and a transmission pattern is a thick bar. It is formed in a shape and fills one layer, and the reception pattern in the form of a thin bar is arranged on the upper layer at right angles.
  • the reception pattern overlaps the transmission pattern in almost all areas.
  • the diamond pattern is a pattern for exposing both the transmission pattern and the reception pattern to one side as much as possible, and is formed by mutually orthogonal channels.
  • the pattern layer does not overlap except the overlap region which is a very partial region where the transmission pattern and the reception pattern overlap, and thus the transmittance problem can be solved.
  • FIG 7 and 8 show the transmittance of the touch-integrated fingerprint sensor according to an embodiment of the present invention.
  • the layer that has the greatest influence on the transmittance in the process of transmitting the light from the display to the eyes of the user is a transparent conductor layer such as ITO, and it is important to minimize the transparent conductor layer in the light transmission process.
  • FIG. 7 indicates that light is transmitted through the fingerprint recognition transmission pattern, and the light passes through the touch screen transmission layer and the fingerprint recognition transmission layer.
  • FIG. 8 is a bar pattern type fingerprint recognition sensor is formed, in the case of 2 of FIG. 8, light passes through a total of three transparent conductive layers of a touch screen transmission layer, a fingerprint recognition transmission layer, and a fingerprint recognition reception layer. Compared with the case of the difference in transmittance occurs.
  • the touch-integrated fingerprint sensor should basically be capable of operating as a touch screen on all of its front surfaces, and should operate as a fingerprint sensor at a specific moment (fingerprint recognition mode).
  • the touch screen sensor is connected to the touch screen controller 700
  • the fingerprint recognition sensor is connected to the fingerprint recognition controller 800
  • the touch screen controller 700 and the fingerprint recognition controller 800 are It is connected to the host controller 900 and interlocked at the same time.
  • the fingerprint sensor disposed in the fingerprint recognition area does not recognize the fingerprint but becomes part of the touch screen sensor to recognize the touch.
  • the pins of each channel change to a floating state.
  • the fingerprint recognition transmission channels become a character of a dummy pattern that plays no role from the touch screen point of view.
  • the direction of the fingerprint recognition transmission pattern 330 is formed parallel to the direction of the touch screen transmission pattern 230, so that the fingerprint recognition transmission pattern 330 serves as a perfect dummy pattern in the touch screen mode. .
  • the fingerprint recognition patterns 340 may be connected to a group of the fingerprint recognition patterns 340, and may be floated.
  • the fingerprint recognition patterns in the touch screen receiving channel and the extension line are grouped to operate as one sensor channel, and the remaining fingerprint recognition patterns are floated to operate like dummy patterns.
  • the fingerprint recognition reception patterns on the extension lines of the touch screen reception patterns 4, 5, and 6 are operated as the reception sensor channel of the touch screen.
  • the process of grouping and plotting fingerprint recognition patterns has an effect of enabling quick touch recognition by reducing unnecessary measurement and computation time.
  • the above-described grouping and floating processing is not essential, and all the receiving channels are read out.
  • an operation timing and a state of a touch screen transmission channel are shared by the fingerprint recognition controller 800, and the fingerprint recognition controller 800 groups the floating state of the fingerprint recognition transmission pattern and the group of the fingerprint recognition reception pattern. After confirming the floating state, the touch screen controller 700 transmits it to the touch screen controller 700.
  • the signal value received from the fingerprint recognition receiving channel is transmitted to the touch screen controller 700 so that the touch screen controller 700 receives the signal received from the signal received in the touch screen reception pattern and the grouped reception pattern among the fingerprint recognition pattern. To calculate the touch position.
  • some of the transmission channels of the touch screen serve as a shield to protect the fingerprint sensor from noise.
  • the touch screen transmission patterns (Tx_t1 and Tx_T0) disposed at the lower end of the fingerprint recognition area are in a ground or shield state.
  • the rest of the touch screen channels perform normal operation.
  • the touch screen channel that is grounded or shielded may be selected not only under the fingerprint recognition area but also over a wider area to prevent the noise.
  • the transmission pattern 330 of the fingerprint recognition sensor operates normally to sequentially transmit signals, and the reception pattern 340 of the fingerprint recognition sensor receives the signal and performs fingerprint recognition in the fingerprint recognition area.
  • the touch screen operation may be simultaneously performed in the remaining areas except for the grounded or shielded touch screen transmission channel region.
  • FIG. 13 is a flowchart illustrating a touch-integrated fingerprint sensing method according to an embodiment of the present invention.
  • the execution mode type step determines whether the mode is a touch screen mode or a fingerprint recognition mode (S100).
  • the fingerprint recognition transmission pattern is floated (S200).
  • the fingerprint recognition transmission pattern is formed in parallel with the touch screen transmission pattern, thereby preventing problems due to mutual interference.
  • the touch screen transmission pattern transmits a signal (S250)
  • the touch screen reception pattern receives a signal (S300).
  • the fingerprint recognition patterns disposed in the fingerprint recognition area are grouped on the extension line of the touch screen reception pattern, and the others are floated, so that the grouped patterns receive signals (S350).
  • the grouped fingerprint recognition pattern transmits the measured value to the touch screen controller (S400), and the touch screen controller determines the touch position by using the signal received by the touch screen reception pattern and the signal received by the grouped fingerprint recognition pattern.
  • Compute (S450).
  • the touch screen transmission pattern is grounded or shielded (S500).
  • the touch screen transmission pattern that is grounded or shielded may be a pattern disposed below the fingerprint recognition area, and the grounding or shielding process may be extended to a wider area to prevent noise.
  • the fingerprint recognition transmission pattern transmits a signal (S550), and the fingerprint recognition reception pattern receives a signal (S600) to obtain a fingerprint image (S650).
  • the remaining patterns other than the ground or shielded touch screen transmission pattern transmit a signal (S700), and the touch screen reception pattern receives a signal (S750), and calculates a touch position (S800).
  • the fingerprint recognition mode not only the fingerprint recognition but also the touch recognition may be simultaneously performed.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Image Input (AREA)

Abstract

La présente invention concerne un capteur de reconnaissance d'empreinte digitale transparent intégré d'écran tactile permettant la reconnaissance d'une empreinte digitale sur l'écran d'un écran tactile. Conformément à un des aspects de la présente invention, le capteur de reconnaissance d'empreinte digitale transparent intégré de l'écran tactile, comprend : un modèle de transmission d'écran tactile situé au niveau de la surface inférieure d'un substrat transparent, un modèle de transmission de reconnaissance d'empreinte digitale situé au niveau de la surface supérieure du substrat transparent ; un modèle de réception de reconnaissance d'empreinte digitale situé au niveau de la surface supérieure d'une couche au niveau de laquelle le modèle de transmission de reconnaissance d'empreinte digitale est situé, et situé au niveau d'une région de reconnaissance d'empreinte digitale de façon à correspondre au modèle de transmission de reconnaissance d'empreinte digitale ; et un modèle de réception d'écran tactile situé au niveau d'une région différente de la région de reconnaissance d'empreinte digitale.
PCT/KR2016/011545 2016-02-17 2016-10-14 Capteur de reconnaissance d'empreinte digitale transparent intégré d'écran tactile WO2017142161A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0018252 2016-02-17
KR1020160018252A KR101761547B1 (ko) 2016-02-17 2016-02-17 터치 일체형 투명 지문인식 센서

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11398107B2 (en) 2020-02-13 2022-07-26 Samsung Electronics Co., Ltd. Fingerprint-touch combined sensor and electronic device including the same

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102384229B1 (ko) * 2017-08-04 2022-04-07 삼성전자주식회사 지문인식가능 터치스크린 장치 및 그 동작방법
KR102420020B1 (ko) * 2017-12-01 2022-07-12 삼성전자주식회사 터치-지문 복합 센서와 그 동작방법 및 터치-지문 복합 센서를 포함하는 전자 장치
KR102581472B1 (ko) 2018-08-10 2023-09-21 삼성전자주식회사 터치-지문 복합 센서 및 이를 포함하는 전자 장치
KR20200057140A (ko) * 2018-11-15 2020-05-26 삼성디스플레이 주식회사 표시 장치
KR102664400B1 (ko) 2019-03-04 2024-05-08 삼성전자주식회사 터치-지문 복합 센서 및 그 제조 방법

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JP2006014838A (ja) * 2004-06-30 2006-01-19 Alps Electric Co Ltd 静電容量センサ
KR20120124369A (ko) * 2011-05-03 2012-11-13 벌리더티 센서스 인코포레이티드 지문 센서 및 통합가능한 전자 디스플레이
KR20130057637A (ko) * 2011-11-24 2013-06-03 삼성전기주식회사 접촉 감지 장치
US8564314B2 (en) * 2010-11-02 2013-10-22 Atmel Corporation Capacitive touch sensor for identifying a fingerprint
KR101502326B1 (ko) * 2014-08-07 2015-03-16 (주)이미지스테크놀로지 스와이프 방식의 지문 인식 일체형 터치스크린과 지문 판별을 위한 방법

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006014838A (ja) * 2004-06-30 2006-01-19 Alps Electric Co Ltd 静電容量センサ
US8564314B2 (en) * 2010-11-02 2013-10-22 Atmel Corporation Capacitive touch sensor for identifying a fingerprint
KR20120124369A (ko) * 2011-05-03 2012-11-13 벌리더티 센서스 인코포레이티드 지문 센서 및 통합가능한 전자 디스플레이
KR20130057637A (ko) * 2011-11-24 2013-06-03 삼성전기주식회사 접촉 감지 장치
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11398107B2 (en) 2020-02-13 2022-07-26 Samsung Electronics Co., Ltd. Fingerprint-touch combined sensor and electronic device including the same

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