JP2004138416A - Pressure-sensitive fingerprint sensor - Google Patents

Pressure-sensitive fingerprint sensor Download PDF

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Publication number
JP2004138416A
JP2004138416A JP2002301250A JP2002301250A JP2004138416A JP 2004138416 A JP2004138416 A JP 2004138416A JP 2002301250 A JP2002301250 A JP 2002301250A JP 2002301250 A JP2002301250 A JP 2002301250A JP 2004138416 A JP2004138416 A JP 2004138416A
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Prior art keywords
transparent
fingerprint
pressure
film
fingerprint sensor
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JP2002301250A
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Japanese (ja)
Inventor
Hironari Ohashi
Akira Saito
Takeo Takei
Katsuhiro Tanaka
Tomohiko Tanimura
大橋 宏成
武井 武男
田中 勝広
谷村 友彦
齊藤 晃
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Nihon Kaiheiki Industry Co Ltd
日本開閉器工業株式会社
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-sensitive fingerprint sensor of a simple structure having a transparent fingerprint detection part as one contributing measure for making compact and versatile a biometric authentication apparatus of fingerprints etc. as information for individually specifying and verifying persons in adaptation to a digital network society. <P>SOLUTION: The pressure-sensitive fingerprint sensor comprises a fingerprint sensing part and a detection circuit part. A film constituting the fingerprint sensing part and an electrode in the lower surface of the film are formed of a transparent member. A matrix electrode formed on a transparent substrate, which forms the detection circuit part, is also formed of a transparent member. The transparent film and the transparent substrate are stacked. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】 [0001]
【発明の属する技術分野】 BACKGROUND OF THE INVENTION
本発明は、指を押し付けた時の圧力により指紋の凹凸にかかる圧力の違いにより指紋を検出する装置であって、指紋検出部を透明に形成した感圧式指紋センサーに関する。 The present invention is an apparatus for detecting a fingerprint by the pressure difference between that according to the irregularities of the fingerprint by the pressure when the finger pressure, to a pressure sensitive fingerprint sensor formed in the fingerprint detection unit transparent.
【0002】 [0002]
【従来の技術】 BACKGROUND OF THE INVENTION
従来、この種の感圧式指紋センサーとしては、基板にフィルムを積層し、指を押し付けた時の圧力の強弱から指紋の紋様を検出させる指紋感知部と指紋の紋様の凹凸による圧力の違いを電位差として取り出す検出回路部からなる感圧式指紋センサーにおいて、ポリエステルやポリアミド等の可撓性フィルムの下面に金等の金属材料をスパッタリングすることにより電極層を形成し、該電極層に対向して薄膜制御によって検出回路部を形成したセラミックスの基板を積層して指紋検出部を形成したものであった。 Conventionally, as this type of pressure sensitive fingerprint sensor, the potential difference film is laminated on a substrate, the pressure difference in accordance with the unevenness of the fingerprint pattern sensing unit and the fingerprint for detecting a fingerprint pattern from the intensity of the pressure when the finger pressed in pressure sensitive fingerprint sensor comprising a detection circuit for taking out as an electrode layer was formed by sputtering a metal material such as gold on the lower surface of the flexible film such as polyester or polyamide, thin-film controlled in opposition to the electrode layer by laminating a substrate of ceramics forming the detecting circuit unit by it was made by forming a fingerprint detection unit.
【0003】 [0003]
【発明が解決しようとする課題】 [Problems that the Invention is to Solve
しかしながら、上記のように構成されている感圧式指紋センサーは、金等の金属材料をスパッタリングすることにより電極層を形成した可撓性フイルムと該電極層に対向して成膜制御によって検出回路部を形成したセラミックスの基板を積層して指紋検出部を形成したものであることから、不透明の指紋検出部であり、機器の小形化、薄型化のためCRTや液晶、有機EL等の表示画面上に配設可能な透明の指紋検出部の開発が望まれていた。 However, pressure sensitive fingerprint sensor that is configured as described above, the detection circuit section by a film forming control in opposition to the flexible film and the electrode layer to form an electrode layer by sputtering a metal material such as gold since by laminating a substrate of ceramics to form a is obtained by forming a fingerprint detection unit, a opaque fingerprint detecting section, downsizing of the equipment, CRT and LCD for thinner, on a display screen such as an organic EL development of the fingerprint detection section arranged possible transparent has been desired.
本発明は、上記問題点を解決し、構造が簡単で指紋検出部を透明にした感圧式指紋センサーを提供することを目的とする。 The present invention is to solve the above problems, and an object thereof is to provide a pressure sensitive fingerprint sensor structure is simple and clear fingerprint detection unit.
【0004】 [0004]
【課題を解決するための手段】 In order to solve the problems]
本発明は、上記問題を解決するために、基板にフィルムを積層し、指を押し付けた時の圧力の強弱から指紋の紋様を検出させる指紋感知部と指紋の紋様の凹凸による圧力の違いを電位差として取り出す検出回路部からなる感圧式指紋センサーにおいて、前記フィルムを透明フィルムで形成するとともに前記基板をも透明基板とし、前記透明フィルムと前記透明基板の対向面に透明電極層を形成し、他方に透明マトリックス電極を形成して透明フィルムの電極と透明基板の電極を対向させて貼り合わせて透明指紋検出部を構成したものである。 The present invention is a potential difference in order to solve the above problems, the film is laminated to the substrate, the pressure difference in accordance with the unevenness of the fingerprint pattern sensing unit and the fingerprint for detecting a fingerprint pattern from the intensity of the pressure when the finger pressed in pressure sensitive fingerprint sensor comprising a detection circuit for taking out as the film was a transparent substrate is also the substrate and forming a transparent film, a transparent electrode layer formed on the opposite surface of the transparent substrate and the transparent film, on the other the electrode and the transparent substrate electrodes of the transparent by forming a transparent matrix electrodes film bonded so as to face is obtained by forming the transparent fingerprint detection unit.
【0005】 [0005]
【発明の実施の形態】 DETAILED DESCRIPTION OF THE INVENTION
本発明によれば、CRT、液晶、有機EL等の表示画面上に配設可能な透明の指紋検出部を提供することができる。 According to the present invention, it is possible to provide CRT, liquid crystal, the disposed possible fingerprint detection section clear on the display screen such as an organic EL. 指紋検出部を大形化することで位置検出のタッチパネルとして提供することが出来る。 It can be provided as a touch panel position detection by the large form of the fingerprint detection unit.
【0006】 [0006]
【実施例】 【Example】
以下に本発明の感圧式指紋センサーの実施例について図面を参照しながら詳細に説明する。 It will be described in detail with reference to the accompanying drawings embodiments of the pressure sensitive fingerprint sensor of the present invention are described below.
【0007】 [0007]
図1は本発明の感圧式指紋センサーの第1実施例における部分断面図であり、上部には可撓性のフィルム材料として透明感圧シート1を配設し、該透明感圧シート1の下面には透明感圧シート透明電極2を形成し、対向する透明基板としての透明センサー本体4の上面にはセンサー本体透明電極3を形成し、透明感圧シート1と透明センサー本体4とを積層し、外側ケース5で補強して感圧式指紋センサー6を構成するため指紋検出部9が透明となり他の表示画面上に積層できる。 Figure 1 is a partial sectional view of a first embodiment of a pressure sensitive fingerprint sensor of the present invention, the upper part is disposed a transparent pressure sensitive sheet 1 as a flexible film material, the lower surface of the transparent pressure-sensitive sheet 1 forms a transparent pressure sensitive sheet transparent electrode 2, the upper surface of the transparent sensor body 4 as a transparent substrate which faces form a sensor body transparent electrode 3, by laminating a transparent pressure-sensitive sheet 1 and the transparent sensor body 4 , the fingerprint detecting portion 9 for constituting the pressure sensitive fingerprint sensor 6 reinforced with outer case 5 can be stacked and become another display screen transparent.
【0008】 [0008]
このため指紋検出部9が透明となった感圧式指紋センサー6の下にスペーサー7を設けて表示素子を組み込んだ表示装置8と積層して一体化が可能なので表示装置8が提示する文字や記号等の形体に求められる視認性を損なうことなく使用できる感圧式指紋センサーが得られる。 Characters and symbols display device 8 presents because capable integration Therefore by laminating a display device 8 incorporating a display device provided with a spacer 7 under pressure sensitive fingerprint sensor 6 the fingerprint detecting portion 9 becomes transparent pressure sensitive fingerprint sensor that can be used without impairing the visibility required for the form of the like can be obtained.
【0009】 [0009]
また指紋検出部9が透明となった感圧式指紋センサー6の下にスペーサー7を設け表示素子を組み込んだ表示装置8と積層して一体化が可能なので機器の小形化に貢献できる感圧式指紋センサーを提供できる。 The pressure sensitive fingerprint sensor so that can integrally laminated with the display device 8 incorporating a display device a spacer 7 provided beneath the pressure sensitive fingerprint sensor 6 the fingerprint detecting portion 9 becomes transparent to contribute to miniaturization of It can provide.
【0010】 [0010]
図2は本発明の感圧式指紋センサーの第1実施例における正面要部断面図であり、操作部18とスイッチ本体16にわかれる表示機能付き押ボタンスイッチにおいて、該スイッチ本体16に内蔵された開閉接触機構部(図示せず)と連動して上下動可能に設置された該操作部18の内部には指紋検出部9が透明な感圧式指紋センサー6を上部に、下部にはCRT、液晶、有機EL等の表示素子を組み込んだ表示装置8を配設し、感圧式指紋センサー6の指紋検出部9から透かして表示装置8の表示エリア10に映し出される内容を見ることができる。 Figure 2 is a front cross-sectional view of principal parts in the first embodiment of the pressure sensitive fingerprint sensor of the present invention, the push button switch with a display function divided into the operation unit 18 and the switch body 16, incorporated in the switch body 16 opening and closing contacting mechanism unit pressure sensitive fingerprint sensor 6 fingerprint detecting portion 9 is transparent in the interior of the vertical movement in conjunction with (not shown) capable of the installed the operating portion 18 in the upper, CRT the bottom, a liquid crystal, the display device 8 incorporating a display element such as an organic EL disposed, you can see the contents displayed on the display area 10 of the display device 8 watermark from the fingerprint detecting portion 9 of the pressure sensitive fingerprint sensor 6.
【0011】 [0011]
操作部18を構成する感圧式指紋センサー6の上面にはボタン11との間にシート状の柔軟性材料14を設置して操作部18の密閉性を高め、感圧式指紋センサー6の下面には僅かな撓みで表示装置8の表示エリア10に緩衝しないように隙間をつくるスペーサー7を設けて表示装置8を機械的に保護し、外装部品のボタン11と表示装置8を固定するオサエ板13を用いて感圧式指紋センサー6を層状に挟んで操作部が構成される。 Operation section 18 is placed a sheet of flexible material 14 between the button 11 on the upper surface of the pressure sensitive fingerprint sensor 6 which constitutes the to enhance the sealability of the operation portion 18, the lower surface of the pressure sensitive fingerprint sensor 6 the display device 8 is mechanically protected by providing a spacer 7 to make a clearance so as not to shock the display area 10 of the display device 8 in the deflection small, the holding plate 13 for fixing the button 11 and the display device 8 of the exterior part operation unit is configured by sandwiching a pressure sensitive fingerprint sensor 6 in layers using.
【0012】 [0012]
感圧式指紋センサー6の指紋検出部9を構成する透明感圧シート1、透明センサー本体4のどちらか一方をダークスモーク系等の色に着色することにより、消灯時の表示素子や液晶のバックライトが消えている時に外部から表示エリア10は見えず、点灯時に表示装置8の表示エリア10に表示される文字や記号等の輪郭や指紋検出エリアを明瞭に表示させる効果が発揮される。 By coloring pressure sensitive fingerprint fingerprint detecting portion 9 a transparent pressure sensitive sheet 1 constituting the sensor 6, either the transparent sensor body 4 on the color of dark smoke system and the like, a display element or a liquid crystal backlight unlit display area 10 is not seen from the outside when is off, the effect of clearly displaying the contours and fingerprint detection area characters or symbols to be displayed on the display area 10 of the display device 8 at the time the lighting is exhibited.
【0013】 [0013]
図3は本発明の感圧式指紋センサーの第2実施例を示す分解斜視図であり、感圧式指紋センサーをPDA、モバイルコンピュータ等の一定の大きさの表示装置に用いた時を示し、図2と同様に感圧式指紋センサー21の上には可視エリアを考慮して中央部を抜いて枠状にしたゴムシート等の柔軟性材料20を設けてカバー19で挟み込み、感圧式指紋センサー21の下にはスペーサー22を介して表示装置23を設け表示装置23の下にはカバー19と嵌合する底板24を配設する。 Figure 3 is an exploded perspective view showing a second embodiment of the pressure sensitive fingerprint sensor of the present invention, shown when using pressure sensitive fingerprint sensor PDA, a display device of predetermined size of the mobile computer or the like, FIG. 2 Similarly sandwiched between cover 19 provided with a flexible material 20 of rubber sheet or the like in a frame shape by far the central portion in consideration of the visible area on the pressure sensitive fingerprint sensor 21 and, under pressure sensitive fingerprint sensor 21 It is disposed bottom plate 24 that mates with the cover 19 under the display device 23 provided with a display device 23 via a spacer 22 on. 該感圧式指紋センサー21の大きさを大形化し、従来一本づつ行っていた指紋の照合を一度に多数本行い照合率をより正確に行えるようにすることができ、利用目的に合わせてプログラムを専用に組み込み該感圧式指紋センサー21の指紋検出部25内を位置検出のタッチパネルとしても用い、高性能の情報入力端末として使用できる構成となり複数の機能を単独で形成する感圧式指紋センサーの付いた表示モジュールを提供する。 The size of the sensitive pressure fingerprint sensor 21 and atmospheric formulated, the collation of the fingerprint which has been performed one by one conventional number can be like this perform matching ratio allows more accurate at a time, the program in accordance with the purpose also used as a touch panel for detecting the position of the fingerprint detecting portion 25 of the built-sensitive pressure fingerprint sensor 21 in a dedicated, with a pressure sensitive fingerprint sensor that forms solely a plurality of functions becomes a structure which can be used as a high-performance information input terminal to provide a display module.
【0014】 [0014]
図4は従来の感圧式指紋センサーの実施例を示す斜視図で、感圧式指紋センサー26は指紋検出部27が不透明であり、表示装置28の上に重ねて設置は出来ず、感圧式指紋センサー26と表示装置28を取り付けた筐体29の一部を個々に占有することになり、装置を薄く、より小形化をはかる時に障害となっていた。 Figure 4 is a perspective view showing an embodiment of a conventional pressure sensitive fingerprint sensor, pressure sensitive fingerprint sensor 26 is opaque fingerprint detector 27, it can not be the installation on top of the display device 28, a pressure sensitive fingerprint sensor would occupy 26 and a portion of the housing 29 fitted with a display device 28 individually, thin device, has been an obstacle when measuring a more compact.
【0015】 [0015]
上記において本発明の感圧式指紋センサーを表示装置の付いた押ボタンスイッチ、表示モジュールに使用した実施例を示したが、各種機器に使用される表示装置に合わせて縦、横自由自在に組合せて、用途に応じた種々の大きさの表示装置にも積層して用いることができる。 Pushbutton switch with a display device pressure sensitive fingerprint sensor of the present invention in the above has shown an example using the display module, vertically in accordance with a display device for use in various devices, the horizontal freely in combination it can be used also laminated to various sizes of the display device according to the application.
本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、それらを本発明の範囲から排除するものではない。 The present invention is not limited to the above embodiments, but various modifications are possible based on the spirit of the present invention are not excluded from the scope of the present invention.
【0016】 [0016]
【発明の効果】 【Effect of the invention】
以上、詳細に説明したように、本発明によれば次のような効果を奏することができる。 As described above in detail, according to the present invention can achieve the following effects.
(1)基板にフィルムを積層し、指を押し付けた時の圧力の強弱から指紋の紋様を検出させる指紋感知部と指紋の紋様の凹凸による圧力の違いを電位差として取り出す検出回路部からなる感圧式指紋センサーにおいて、フィルムを透明フィルムで形成するとともに基板をも透明基板とし、透明フィルムと透明基板の対向面に透明マトリックス電極を他方に透明電極層を配設して透明指紋検出部を形成したので、携帯電話をはじめノートパソコンやPDAの表示画面上に積層して使用できる。 (1) a substrate film is laminated, a pressure-sensitive consisting detection circuit for taking out the pressure difference in accordance with the unevenness of the fingerprint pattern sensing unit and the fingerprint for detecting a fingerprint pattern from the intensity of the pressure when the finger pressure as a potential difference in fingerprint sensor, even a transparent substrate a substrate to form a film of a transparent film, since the transparent matrix electrodes on the opposing surfaces of the transparent film and the transparent substrate by disposing the transparent electrode layer on the other to form a transparent fingerprint detector , it can be used by laminating a mobile phone at the beginning of the notebook personal computer or PDA display on the screen.
(2)フィルムを透明フィルムで形成するとともに基板をも透明基板とし、透明フィルムと透明基板の対向面に透明マトリックス電極を、他方に透明電極層を配設して透明指紋検出部を形成したので、表示画面の一部を犠牲にすることなく通常の表示範囲で使用することができ、視認性を損なうことがない。 (2) The film was a transparent substrate also substrate and forming a transparent film, a transparent matrix electrodes on the opposing surfaces of the transparent film and the transparent substrate, because by disposing the transparent electrode layer on the other to form a transparent fingerprint detector , it can be used in conventional display range without sacrificing a part of the display screen, without impairment of visibility.
(3)フィルムを透明フィルムで形成するとともに基板をも透明基板とし、透明フィルムと透明基板の対向面に透明マトリックス電極を、他方に透明電極層を配設して透明指紋検出部を形成したので、表示の一部を犠牲にすることがないため、機器の軽薄短小化に貢献できる感圧式指紋センサーを提供できる。 (3) Film also a transparent substrate a substrate with a formed of a transparent film, a transparent matrix electrodes on the opposing surfaces of the transparent film and the transparent substrate, since a transparent fingerprint detection section arranged a transparent electrode layer on the other , since there is no sacrificing the part of the display, it can provide a pressure sensitive fingerprint sensor that can contribute to miniaturization of the equipment.
(4) 指紋検出部を構成する前記透明フィルムに色を施したので、表示画面が見易く、機器のデザインにあった指紋検出部を選択することができる。 (4) Since subjecting a color to the transparent film which constitutes the fingerprint detection unit, easily see the display screen, it is possible to select the fingerprint detection section matching the design of the equipment.
(5) 指紋検出部を大形化して感圧式指紋センサーを位置検出するタッチパネルとして使用することもできる。 (5) a pressure sensitive fingerprint sensor with atmospheric formulated fingerprint detection section may be used as a touch panel for detecting the position.
【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS
【図1】本発明の感圧式指紋センサーの第1実施例を示す部分断面図である。 1 is a partial sectional view showing a first embodiment of a pressure sensitive fingerprint sensor of the present invention.
【図2】本発明の感圧式指紋センサーの第1実施例を示す正面要部断面図である。 Figure 2 is a front cross sectional view showing a first embodiment of a pressure sensitive fingerprint sensor of the present invention.
【図3】本発明の感圧式指紋センサーの第2実施例を示す分解斜視図である。 3 is an exploded perspective view showing a second embodiment of the pressure sensitive fingerprint sensor of the present invention.
【図4】従来の感圧式指紋センサーの実施例を示す斜視図である。 4 is a perspective view showing an example of a conventional pressure sensitive fingerprint sensor.
【符号の説明】 DESCRIPTION OF SYMBOLS
1 透明感圧シート2 透明感圧シート透明電極3 透明センサー本体透明電極4 透明センサー本体5 外側ケース6、21、26 感圧式指紋センサー7、22 スペーサ8、23、28 表示装置9、25、27 指紋検出部10 表示エリア11 ボタン12、15 フレキシブルプリント基板13 オサエ板14、20 柔軟性材料16 スイッチ本体17 コネクタ18 操作部19 カバー24 底板29 筐体 1 transparent pressure sensitive sheet 2 transparent pressure sensitive sheet transparent electrode 3 transparent sensor body transparent electrode 4 transparent sensor body 5 outer case 6,21,26 pressure sensitive fingerprint sensor 7, 22 spacer 8,23,28 display 9,25,27 fingerprint detecting portion 10 display area 11 buttons 12 and 15 the flexible printed circuit board 13 holding plate 14, 20 flexible material 16 switch body 17 connector 18 operating portion 19 cover 24 bottom plate 29 enclosure

Claims (3)

  1. 基板にフィルムを積層し、指を押し付けた時の圧力の強弱から指紋の紋様を検出させる指紋感知部と指紋の紋様の凹凸による圧力の違いを電位差として取り出す検出回路部からなる感圧式指紋センサーにおいて、前記フィルムを透明フィルムで形成するとともに前記基板をも透明基板とし、前記透明フィルムと前記透明基板の対向面に透明マトリックス電極を他方に透明電極層を配設して透明指紋検出部を形成したことを特徴とする感圧式指紋センサー。 Substrate film is laminated, the pressure sensitive fingerprint sensor comprising a detection circuit for taking out the pressure difference in accordance with the unevenness of the fingerprint pattern sensing unit and the fingerprint for detecting a fingerprint pattern from the intensity of the pressure as a potential difference when the finger pressed , a transparent substrate is also the substrate to form the said film with a transparent film and said transparent film and the transparent matrix electrodes on the opposite surface of the transparent substrate by disposing the transparent electrode layer on the other to form a transparent fingerprint detector pressure-sensitive fingerprint sensor, characterized in that.
  2. 前記指紋感知部を構成する前記透明フィルムに色を施したことを特徴とする請求項1記載の感圧式指紋センサー。 Claim 1 pressure sensitive fingerprint sensor, wherein a subjected to color the transparent film constituting the fingerprint sensing portion.
  3. 前記指紋検出部を大形化して位置検出のタッチパネルとして使用することを特徴とする請求項1記載の感圧式指紋センサー。 Pressure sensitive fingerprint sensor of claim 1, wherein the use of the fingerprint detecting section as a touch panel position detection a big formulated.
JP2002301250A 2002-10-16 2002-10-16 Pressure-sensitive fingerprint sensor Pending JP2004138416A (en)

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JP2005332304A (en) * 2004-05-21 2005-12-02 Seiko Epson Corp Ic card
US20080262973A1 (en) * 2007-04-20 2008-10-23 Johnson Neldon P Apparatus and method for secured commercial transactions
JP2013541780A (en) * 2010-10-18 2013-11-14 クゥアルコム・メムス・テクノロジーズ・インコーポレイテッドQUALCOMM MEMS Technologies, Inc. Pair of touch, handwriting and fingerprint sensor
US9024910B2 (en) 2012-04-23 2015-05-05 Qualcomm Mems Technologies, Inc. Touchscreen with bridged force-sensitive resistors
JP2016091476A (en) * 2014-11-10 2016-05-23 志忠 林 Touch panel having fingerprint identification function

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005332304A (en) * 2004-05-21 2005-12-02 Seiko Epson Corp Ic card
JP4539169B2 (en) * 2004-05-21 2010-09-08 セイコーエプソン株式会社 Ic card
US20080262973A1 (en) * 2007-04-20 2008-10-23 Johnson Neldon P Apparatus and method for secured commercial transactions
US8571996B2 (en) * 2007-04-20 2013-10-29 N.P. Johnson Family Limited Partnership Apparatus and method for secured commercial transactions
JP2013541780A (en) * 2010-10-18 2013-11-14 クゥアルコム・メムス・テクノロジーズ・インコーポレイテッドQUALCOMM MEMS Technologies, Inc. Pair of touch, handwriting and fingerprint sensor
US9024910B2 (en) 2012-04-23 2015-05-05 Qualcomm Mems Technologies, Inc. Touchscreen with bridged force-sensitive resistors
JP2016091476A (en) * 2014-11-10 2016-05-23 志忠 林 Touch panel having fingerprint identification function

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