+

WO2018149058A1 - Lecteur d'empreintes digitales, et appareil terminal - Google Patents

Lecteur d'empreintes digitales, et appareil terminal Download PDF

Info

Publication number
WO2018149058A1
WO2018149058A1 PCT/CN2017/087590 CN2017087590W WO2018149058A1 WO 2018149058 A1 WO2018149058 A1 WO 2018149058A1 CN 2017087590 W CN2017087590 W CN 2017087590W WO 2018149058 A1 WO2018149058 A1 WO 2018149058A1
Authority
WO
WIPO (PCT)
Prior art keywords
fingerprint
terminal device
antenna radiator
flexible circuit
antenna
Prior art date
Application number
PCT/CN2017/087590
Other languages
English (en)
Chinese (zh)
Inventor
王磊
毛维华
吕仁
尤佳庆
Original Assignee
华为技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780003925.3A priority Critical patent/CN108323205A/zh
Publication of WO2018149058A1 publication Critical patent/WO2018149058A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition

Definitions

  • the present application relates to the field of electronic technologies, and in particular, to a fingerprint device and a terminal device.
  • a fingerprint recognition function is generally provided.
  • the fingerprint device that implements the fingerprint recognition function is disposed at the start home key position or below the back camera. These positions usually coincide with the antenna radiator position of the antenna.
  • the home key position usually coincides with the position of the far-field antenna of the terminal device, and the position below the back camera is usually the NFC (Near Field Communication) antenna.
  • the position coincides.
  • the antenna radiators of the fingerprint device and the antenna are usually separately disposed, occupying a large thickness in the overlapping positions of the two, and the installation of the two separately is not conducive to improving the integration degree of the device, and is internal to the terminal device. The space is occupied more.
  • the embodiment of the present application provides a fingerprint device and a terminal device, which can multiplex the fingerprint device with the antenna radiator of the antenna to improve the integration degree of the device, thereby reducing the occupation of the internal space of the terminal device, and facilitating the small terminal device.
  • a fingerprint device comprising: a fingerprint sensor portion and a flexible circuit board portion, wherein the fingerprint sensor portion is connected to the main board of the terminal through the flexible circuit board portion; the fingerprint sensor portion and the flexible circuit board portion are covered with low loss of communication
  • the metal conductor forms an antenna radiator; the fingerprint sensor portion includes a touch circuit, and the antenna radiator corresponds to the touch surface of the touch circuit; the flexible circuit board portion is provided with a conductive reinforcing plate, and the conductive reinforcing plate is electrically connected to the antenna radiator, and is electrically conductive.
  • the stiffener is used as the feed portion of the antenna radiator.
  • the solution provided by the present application forms an antenna radiator by covering a low loss metal conductor connected in a portion of the fingerprint sensor portion and the flexible circuit board portion, and a conductive reinforcing plate is disposed on the flexible circuit board portion as an antenna radiator.
  • the feeding portion, and the antenna radiator is hollowed out at the touch surface of the touch circuit corresponding to the fingerprint sensor portion, thereby not affecting the touch function of the fingerprint device, thereby realizing effective multiplexing of the fingerprint device and the antenna radiator of the antenna,
  • the space occupied by the fingerprint device is effectively utilized, the integration degree of the device is improved, and the occupation of the internal space of the terminal device is reduced, which is advantageous for miniaturization, thinning and thinning of the terminal device.
  • the fingerprint sensor portion includes a touch circuit and a support plate located below the touch circuit, wherein the antenna radiator serves as a support plate for the touch circuit.
  • the support plate under the touch circuit is multiplexed into an antenna radiator, so that the antenna radiator and the touch circuit share the support plate, which can effectively reduce the thickness of the fingerprint device and the antenna radiation combined portion.
  • the flexible circuit board portion is plated with a low loss metal conductor.
  • the feed portion includes a feed point and/or a location.
  • a PIFA (Planar Inverted F Antenna) antenna has a feed point and a location
  • a monopole antenna has only one feed point
  • a PIFA antenna plus a parasitic antenna has two feed points and one location.
  • the fingerprint device further includes a fingerprint chip attached to the flexible circuit board portion.
  • a shielding cover is disposed outside the fingerprint chip, and the shielding cover is grounded, wherein the shielding cover is electrically connected to the ground through the conductive cloth.
  • the fingerprint chip mainly processes the touch signal generated by the fingerprint sensor part in a manner of detection, conversion, etc., and shielding the fingerprint chip through the shield cover to avoid interference of the external signal on the fingerprint chip.
  • a terminal device including any of the above fingerprint devices.
  • the fingerprint device is disposed in a non-display area of the display panel of the terminal device.
  • the main board of the terminal device is provided with a spring foot, and the conductive reinforcing plate is electrically connected with the elastic foot; the elastic foot is used for grounding, or the elastic foot is connected to the main board The RF circuit on it.
  • the foot is specifically configured to be coupled to a feed point or location.
  • the PIFA antenna two bullets are required, one for connecting the feed point and the other for connecting the foot.
  • the monopole antenna only one foot is needed to connect the feed point; for the PIFA antenna Parasitic antennas require three footers to connect two feed points and one location.
  • the main board of the terminal device is provided with a positioning bracket, and the conductive reinforcing plate is fixed on the positioning bracket.
  • the fingerprint sensor portion is fixed to the main board of the terminal device by bonding or by a support frame.
  • FIG. 1 is a schematic structural diagram of a fingerprint device provided by the present application.
  • FIG. 2 is a schematic structural view of a cross section of AA' of a fingerprint device provided in FIG. 1 of the present application;
  • FIG. 3 is a schematic structural view of a BB' cross section of a fingerprint device provided in FIG. 1 of the present application;
  • FIG. 4 is a schematic structural view of a BB' cross section of the fingerprint device shown in FIG. 1 according to another embodiment of the present application;
  • FIG. 5 is a schematic structural diagram of a terminal device according to the present application.
  • FIG. 6 is a schematic diagram of simulation of return loss of an antenna radiator of a fingerprint device provided by the present application.
  • FIG. 7 is a schematic diagram of simulation of antenna efficiency of an antenna radiator of a fingerprint device provided by the present application.
  • the antenna radiator provided by the embodiment of the present application may be an antenna radiator of a far-field antenna or a near-field antenna of the terminal device, and the far-field antenna may be a single input single output (SISO) antenna, multiple input multiple output. (Multiple-Input Multiple-Output, MIMO) antenna, Planar Invert F Antenna (PIFA) antenna, near-field antenna may be an NFC antenna, etc., and the solution provided by the embodiments of the present application is not limited to the above antenna. It can be understood that any antenna structure including an antenna radiator should be applicable.
  • the terminal device provided by the embodiment of the present application may be a mobile device with a fingerprint detection function, such as a mobile phone or a tablet computer.
  • An embodiment of the present application provides a fingerprint device 10, as shown in FIGS. 1, 2, and 3, comprising: a fingerprint sensor portion 11 and a flexible circuit board portion 12, wherein the fingerprint sensor portion 11 is connected to the terminal through the flexible circuit board portion 12.
  • the main board; the fingerprint sensor portion 11 and the flexible circuit board portion 12 are covered with the connected low-loss metal conductor 13 to form an antenna radiator;
  • the fingerprint sensor portion 11 includes a touch circuit 111, and the antenna radiator corresponds to the hollow surface of the touch surface of the touch circuit 111;
  • the circuit board portion 12 is provided with a conductive reinforcing plate 121 electrically connected to the antenna radiator, and the conductive reinforcing plate 121 serves as a feeding portion 14 of the antenna radiator.
  • the fingerprint sensor portion 11 can be implemented in the following two manners: Method 1: Referring to FIG. 3, the fingerprint sensor portion 11 includes a touch circuit 111. The touch circuit 111 is wrapped with a low-loss metal conductor 13 except for the touch surface. The antenna radiator corresponds to the hollow at the touch surface of the touch circuit 111. In this scheme, the touch surface of the touch circuit 111 is used to detect a touch operation, and thus needs to be exposed. Or, the second method: as shown in FIG. 4, the fingerprint sensor portion 11 includes a touch circuit 111 and a support plate 112 under the touch circuit, wherein the antenna radiator is used as a support plate of the touch circuit 111, so that the support plate 112 adopts low loss. A metal conductor is formed. In the solution, the support plate under the touch circuit is multiplexed into an antenna radiator, so that the antenna radiator and the touch circuit share the support plate, which can effectively reduce the thickness of the fingerprint device and the antenna radiation combined portion.
  • Method 1 Referring to FIG. 3, the fingerprint sensor portion 11 includes a touch
  • a low loss metal conductor may be formed on the outside of the flexible circuit board portion 12 by electroplating. As shown in FIG. 2, the outer side of the flexible circuit board portion 12 is plated with a low loss metal conductor 13.
  • the solution provided by the present application forms an antenna radiator by covering a low loss metal conductor connected in a portion of the fingerprint sensor portion and the flexible circuit board portion, and a conductive reinforcing plate is disposed on the flexible circuit board portion as an antenna radiator.
  • the feeding portion, and the antenna radiator is hollowed out at the touch surface of the touch circuit corresponding to the fingerprint sensor portion, thereby not affecting the touch function of the fingerprint device, thereby realizing effective multiplexing of the fingerprint device and the antenna radiator of the antenna,
  • the space occupied by the fingerprint device is effectively utilized, the integration degree of the device is improved, and the occupation of the internal space of the terminal device is reduced, which is advantageous for miniaturization, thinning and thinning of the terminal device.
  • the feed portion 14 includes feed points and/or locations.
  • a PIFA (Planar Inverted F Antenna) antenna has a feed point and a location
  • a monopole antenna has only one feed point
  • a PIFA antenna plus a parasitic antenna has two feed points and one location.
  • the fingerprint device further includes a fingerprint chip attached to the flexible circuit board portion 12. 15.
  • a shield cover 16 is disposed outside the fingerprint chip, and the shield cover 16 is grounded, wherein the shield cover is electrically connected to the ground through the conductive cloth.
  • the fingerprint chip mainly processes the touch signal generated by the fingerprint sensor part in a manner of detection, conversion, etc., and shielding the fingerprint chip through the shield cover to avoid interference of the external signal on the fingerprint chip.
  • An embodiment of the present application further provides a terminal device, including any of the above fingerprint devices.
  • the fingerprint device 10 is disposed in the non-display area 20 of the display panel of the terminal device.
  • An example is where the fingerprint device 10 is placed at the starting home key location of the non-display area.
  • the main board of the terminal device is provided with a spring foot, and the conductive reinforcing plate is electrically connected with the elastic foot, the elastic foot is used for grounding, or the elastic foot is connected to the radio frequency circuit on the main board.
  • the foot is specifically configured to be coupled to a feed point or location.
  • a feed point or location Exemplarily, for the PIFA antenna, two bullets are required, one for connecting the feed point and the other for connecting the foot.
  • the monopole antenna only one foot is needed to connect the feed point; for the PIFA antenna Parasitic antennas require three footers to connect two feed points and one location.
  • a positioning bracket is disposed on the main board of the terminal device, and the conductive reinforcing plate is fixed on the positioning bracket.
  • the positioning of the bracket is not limited.
  • the positioning bracket may be a plurality of positioning posts, which are fixed by being matched with the through holes of the conductive reinforcing plate, or the positioning bracket is a card slot that is shaped to match the outer edge of the conductive reinforcing plate.
  • the fingerprint sensor portion is fixed to the main board of the terminal device by bonding or by a support frame.
  • the performance of the antenna radiator included in the fingerprint device of the above structure is tested under the 5G (5th-generation, fifth generation mobile communication technology) wireless communication condition, and the test results are shown in FIGS. 6 and 7, wherein
  • Figure 6 shows the return loss of the antenna at different frequencies, where the vertical axis is: return loss (in dB), the horizontal axis is: frequency (in GHz);
  • Figure 7 shows the antenna of the antenna at different frequencies Efficiency, where the vertical axis is: antenna efficiency (in dB), and the horizontal axis is: frequency (in GHz); where, in the 5G free band 5.150GHz-5.825GHz, the return loss is less than -2.25dB, which corresponds to The antenna efficiency is greater than -5dB, and the antenna efficiency of this structural design meets the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Data Mining & Analysis (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Bioinformatics & Computational Biology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Evolutionary Biology (AREA)
  • Evolutionary Computation (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Artificial Intelligence (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

La présente invention concerne le domaine technique de l'électronique, et porte sur un dispositif d'empreinte digitale et un appareil terminal permettant à un dispositif d'empreinte digitale de servir également d'antenne active, améliorant ainsi l'intégration du dispositif, et réduisant en conséquence l'occupation de l'espace dans un appareil terminal. Le dispositif d'empreinte digitale comprend : une partie capteur d'empreintes digitales (11) et une partie carte de circuit souple (12), la partie capteur d'empreintes digitales (11) étant connectée à une carte principale d'un terminal par l'intermédiaire de la partie carte de circuit souple (12). La partie capteur d'empreintes digitales (11) et la partie carte de circuit souple (12) sont recouvertes d'un conducteur métallique à faible perte (13) pour former une antenne active. La partie capteur d'empreintes digitales (11) comprend un circuit tactile (111), et l'antenne active a une ouverture à un emplacement correspondant à une surface tactile du circuit tactile (111). Une carte de renforcement conductrice (121) est disposée sur la partie carte de circuit souple (12), et connectée électriquement à l'antenne active. La carte de renforcement conductrice (121) est utilisée en tant que partie d'alimentation électrique (14) de l'antenne active.
PCT/CN2017/087590 2017-02-16 2017-06-08 Lecteur d'empreintes digitales, et appareil terminal WO2018149058A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780003925.3A CN108323205A (zh) 2017-02-16 2017-06-08 一种指纹器件及终端设备

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710084694.5 2017-02-16
CN201710084694 2017-02-16

Publications (1)

Publication Number Publication Date
WO2018149058A1 true WO2018149058A1 (fr) 2018-08-23

Family

ID=63169124

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/087590 WO2018149058A1 (fr) 2017-02-16 2017-06-08 Lecteur d'empreintes digitales, et appareil terminal

Country Status (1)

Country Link
WO (1) WO2018149058A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101095145A (zh) * 2004-09-16 2007-12-26 西奎公司 被集成在触摸垫中的非接触读卡器
CN203014886U (zh) * 2012-12-04 2013-06-19 广东欧珀移动通信有限公司 移动终端
CN105404881A (zh) * 2015-12-25 2016-03-16 成都费恩格尔微电子技术有限公司 一种指纹传感器组件及其制备方法
CN105404880A (zh) * 2015-12-25 2016-03-16 成都费恩格尔微电子技术有限公司 一种具有指纹传感器组件的电子装置
CN105608437A (zh) * 2015-12-25 2016-05-25 成都费恩格尔微电子技术有限公司 一种混合式指纹采集的芯片及采集方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101095145A (zh) * 2004-09-16 2007-12-26 西奎公司 被集成在触摸垫中的非接触读卡器
CN203014886U (zh) * 2012-12-04 2013-06-19 广东欧珀移动通信有限公司 移动终端
CN105404881A (zh) * 2015-12-25 2016-03-16 成都费恩格尔微电子技术有限公司 一种指纹传感器组件及其制备方法
CN105404880A (zh) * 2015-12-25 2016-03-16 成都费恩格尔微电子技术有限公司 一种具有指纹传感器组件的电子装置
CN105608437A (zh) * 2015-12-25 2016-05-25 成都费恩格尔微电子技术有限公司 一种混合式指纹采集的芯片及采集方法

Similar Documents

Publication Publication Date Title
CN112438042B (zh) 天线结构和包括天线的电子设备
US9300055B2 (en) Mobile device with two antennas and antenna switch modules
US11271292B2 (en) Display device with integrated antenna
US10742250B1 (en) Electronic devices having integrated antenna structures
CN112768904B (zh) 天线辐射体、天线组件及电子设备
US11853016B2 (en) Electronic device wide band antennas
CN112216958A (zh) 电子设备
US20220336967A1 (en) Antenna module having a miniaturized size and electronic device including the antenna module
US12191558B2 (en) Electronic device including antenna
CN208637584U (zh) 天线组件和电子设备
KR102796000B1 (ko) 고주파 대역의 신호를 전달하는 인쇄 회로 기판 및 그것을 포함하는 전자 장치
JP2015534417A (ja) アンテナガラスカバーを有する電子装置
CN108323205A (zh) 一种指纹器件及终端设备
CN111864350B (zh) 天线和终端
US12107321B2 (en) Antenna and electronic device including same
US11978950B2 (en) Electronic device including noise inducing structure
WO2018149058A1 (fr) Lecteur d'empreintes digitales, et appareil terminal
CN111900534A (zh) 天线结构及电子设备
EP4216369A1 (fr) Antenne et dispositif électronique la comprenant
CN214706226U (zh) 一种移动终端
CN219203497U (zh) 电子设备天线及电子设备
EP4216368A1 (fr) Antenne et dispositif électronique la comprenant
US20230420826A1 (en) Antenna and electronic device comprising same
US11189910B2 (en) Antenna and cap
EP4372913A1 (fr) Antenne et dispositif électronique la comprenant

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: 17897149

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17897149

Country of ref document: EP

Kind code of ref document: A1

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载