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公开(公告)号：US10863133B2
公开(公告)日：2020-12-08
申请号：US16716464
申请日：2019-12-16
发明人： Yu-Hsuan Lin , Chung-Yi Wang
摘要： A readout circuit for reading sensed signals of a pixel array. The readout circuit includes: an operational amplifier, a plurality of switching devices and a computation circuit. The operational amplifier is arranged to generate an output signal in each amplifier output cycle. In each amplifier output cycle, each of the switching devices is controlled by a switch controlling signal to selectively couple pixel circuits to the differential input terminals of the operational amplifier. The computation circuit is arranged to the recover a plurality of sensed signal respectively corresponding to a plurality of pixel circuits. In each amplifier output cycle, at least two of the switching devices are turned on, such that the operational amplifier receives the sensed signals of at least two pixel circuits in the pixel array simultaneously and sums the sensed signals of the at least two pixel circuits to generate the output signal.
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公开(公告)号：US20230115951A1
公开(公告)日：2023-04-13
申请号：US17913168
申请日：2020-10-23
申请人： Egis Technology Inc.
发明人： Yu-Hsuan Lin , Yao-Li Huang , Chung-Yi Wang , Sheng Ruei Hsu
摘要： Provided is an electronic device comprising a touch display panel and an integrated chip. The touch display panel comprises a pixel array. The integrated chip is electrically connected to the pixel array. The integrated chip comprises a fingerprint sensing circuit and a display driving circuit. The fingerprint sensing circuit and the display driving circuit are electrically connected to multiple display data lines and sensing data lines through of the same pin. The multiple display data lines are respectively electrically connected to multiple color sub-pixels of the pixel array. The sensing data lines are electrically connected to multiple fingerprint sensing pixels of the pixel array. The multiple color sub-pixels are multiple liquid crystal display pixels.
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公开(公告)号：US11557144B2
公开(公告)日：2023-01-17
申请号：US17467459
申请日：2021-09-07
申请人： Egis Technology Inc.
发明人： Yu-Hsuan Lin , Chung-Yi Wang , Zhe-Wei Kuo
IPC分类号： G06V40/13
摘要： A capacitive fingerprint sensing device is provided. A sensing pixel unit includes a capacitor, a reset circuit, and a sensing capacitor. The reset circuit provides a reset voltage during a reset period to reset a voltage on the capacitor and provides an adjustment current during a sensing period to adjust a sense voltage generated on a common junction of the capacitor and the reset circuit.
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公开(公告)号：US20220165079A1
公开(公告)日：2022-05-26
申请号：US17601441
申请日：2020-02-24
申请人： EGIS TECHNOLOGY INC.
发明人： Chung-Yi Wang , Yu-Hsuan Lin , Chih-Hsiang Chuang
IPC分类号： G06V40/13 , G06V10/147 , G06F3/041
摘要： An electronic apparatus having a fingerprint sensing function, including a touch panel, a driving circuit, a fingerprint sensing array, and a fingerprint sensing circuit, is provided. The driving circuit provides a driving signal to the touch panel. The fingerprint sensing array includes multiple sensing units arranged in an array. The fingerprint sensing circuit is coupled to the sensing units on the fingerprint sensing array via multiple sensing data lines, and applies multiple control signals to the sensing units via the sensing data lines. A working frequency of the driving signal is the same as a working frequency of the control signals, and the driving signal is synchronized with the control signals.
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公开(公告)号：US11329096B2
公开(公告)日：2022-05-10
申请号：US17004017
申请日：2020-08-27
申请人： Egis Technology Inc.
发明人： Tzu-Yang Peng , Ming-Yuan Cheng , Chung-Yi Wang , Yu-Hsuan Lin
IPC分类号： H01L27/146 , G06V40/13
摘要： A fingerprint sensing module including an image sensor, a microlens array and a light-shielding layer is provided. The image sensor has multiple pixels. Each of the pixels has multiple light-sensing regions physically separated. Each of the light-sensing regions is adapted to receive an image beam coming from a fingerprint of user. The microlens array is disposed above the image sensor. The microlens array includes multiple microlens. A focus region of each of the microlens covers a portion of the light-sensing regions. The light-shielding layer is disposed between the image sensor and the microlens array. The light-shielding layer has multiple openings, and the positions of the openings are corresponded to the positions of the pixels.
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公开(公告)号：US20220100984A1
公开(公告)日：2022-03-31
申请号：US17467459
申请日：2021-09-07
申请人： Egis Technology Inc.
发明人： Yu-Hsuan Lin , Chung-Yi Wang , Zhe-Wei Kuo
IPC分类号： G06K9/00
摘要： A capacitive fingerprint sensing device is provided. A sensing pixel unit includes a capacitor, a reset circuit, and a sensing capacitor. The reset circuit provides a reset voltage during a reset period to reset a voltage on the capacitor and provides an adjustment current during a sensing period to adjust a sense voltage generated on a common junction of the capacitor and the reset circuit.
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公开(公告)号：US11126813B2
公开(公告)日：2021-09-21
申请号：US16840464
申请日：2020-04-06
发明人： Ming-Yuan Cheng , Chung-Yi Wang , Sung-Hua Chen , Yu-Hsuan Lin
IPC分类号： G06K9/00
摘要： The invention provides a fingerprint sensing device. A control circuit controls a part of point light sources to irradiate a fingerprint of a user. Reflected light generated by using the plurality of point light sources to irradiate the fingerprint of the user forms a light-emitted pattern including a plurality of reflected light patterns on a sensing layer, wherein each of the reflected light patterns is provided by a corresponding point light source, and each of the sensing units senses the reflected light patterns corresponding to at least two point light sources.
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28.发明授权公开(公告)号：US11048909B2
公开(公告)日：2021-06-29
申请号：US16538124
申请日：2019-08-12
发明人： Yu-Hsuan Lin , Tang-Hung Po , Chung-Yi Wang
摘要： A full-screen electronic device with a fingerprint sensing function and a fingerprint sensing method are provided. The full-screen electronic device includes a panel module, a plurality of fingerprint sensors and a control unit. The plurality of fingerprint sensors are aligned with the panel module and distributed into a plurality of scan regions in an array. The fingerprint sensing method includes the following steps. Firstly, a concerned information about a concerned position of the display panel is generated. After the control unit receives the concerned information, the control unit defines the scan regions of the concerned position as a first scan set according to the concerned information. Then, the control unit controls the fingerprint sensors corresponding to the first scan set according to a first scan strategy.
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公开(公告)号：US20200349335A1
公开(公告)日：2020-11-05
申请号：US16840464
申请日：2020-04-06
发明人： Ming-Yuan Cheng , Chung-Yi Wang , Sung-Hua Chen , Yu-Hsuan Lin
IPC分类号： G06K9/00
摘要： The invention provides a fingerprint sensing device. A control circuit controls a part of point light sources to irradiate a fingerprint of a user. Reflected light generated by using the plurality of point light sources to irradiate the fingerprint of the user forms a light-emitted pattern including a plurality of reflected light patterns on a sensing layer, wherein each of the reflected light patterns is provided by a corresponding point light source, and each of the sensing units senses the reflected light patterns corresponding to at least two point light sources.
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公开(公告)号：US20200340855A1
公开(公告)日：2020-10-29
申请号：US16733256
申请日：2020-01-03
发明人： Chung-Yi Wang , Yu-Hsuan Lin
摘要： A calibration circuit configured to calibrate a signal of a sensing unit comprises: an amplifier, a first impedance element and a second impedance element. The amplifier has a first input terminal, a second input terminal and an output terminal. The first input terminal is coupled to a first terminal of the sensing unit, the second input terminal is coupled to a reference voltage, and the output terminal is feedback to the first input terminal and outputs the readout signal. A first terminal of the first impedance element is coupled to the first input terminal of the amplifier, and a second terminal of the first impedance element is coupled to a calibration voltage. A first terminal of the second impedance element is coupled to the first terminal of the first impedance element, and a second terminal of the second impedance element is coupled to the output terminal of the amplifier.
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