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公开(公告)号：US11586321B2
公开(公告)日：2023-02-21
申请号：US17601434
申请日：2020-03-11
申请人： Egis Technology Inc.
发明人： Chung-Yi Wang , Yu-Hsuan Lin
摘要： An electronic device with fingerprint sensing function including a fingerprint sensing array, multiple fingerprint sensing signal readout lines, multiple touch driving lines, a touch driving circuit, and a read circuit is provided. The fingerprint sensing array includes multiple fingerprint sensing units arranged in array. The fingerprint sensing signal readout lines are respectively coupled to a column of fingerprint sensing units of the fingerprint sensing array. The touch driving lines are respectively interleaved with the fingerprint sensing signal readout lines. The touch driving circuit is coupled to the touch driving lines, and provides multiple touch driving signals to the touch driving lines. The read circuit is coupled to the fingerprint sensing signal readout lines. In response to the touch driving lines outputting the touch driving signals, the read circuit determines a touch position of a touch object based on multiple read signals output by the fingerprint sensing signal readout lines.
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公开(公告)号：US20210342568A1
公开(公告)日：2021-11-04
申请号：US17246724
申请日：2021-05-03
申请人： Egis Technology Inc.
发明人： Yao-Li Huang , Yu-Hsuan Lin , Chung-Yi Wang
IPC分类号： G06K9/00 , G09G3/20 , G06F3/041 , G06F1/3231 , G06F21/32
摘要： A fingerprint sensing device and an operation method thereof are provided. The fingerprint sensing device includes a driver integrated chip and a fingerprint sensor. The driver integrated chip is coupled to a host processor. The fingerprint sensor is coupled to the driver integrated chip and the host processor. The fingerprint sensor obtains a fingerprint image during a period when the host processor is in the sleep mode. The driver integrated chip performs a fingerprint verification on the fingerprint image, and the driver integrated chip determines to wake up the host processor according to whether the fingerprint image passes the fingerprint verification.
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公开(公告)号：US20200351457A1
公开(公告)日：2020-11-05
申请号：US16815021
申请日：2020-03-11
发明人： Chung-Yi Wang , Yu-Hsuan Lin
IPC分类号： H04N5/357
摘要： The invention provides an optical sensor and an image sensing method. The optical sensor includes a sensing array, a sampling circuit and an operational circuit. The sensing array performs an exposure operation to sense an object and output a plurality of first sensing signals, and performs a reset operation to output a plurality of second sensing signals. The sampling circuit outputs a plurality of first pixel data of an object image according to the plurality of first sensing signals, and outputs a plurality of second pixel data according to the plurality of second sensing signals. The operational circuit executes a subtraction operation on the plurality of first pixel data and the plurality of second pixel data to obtain a denoised object image. Therefore, the sampling circuit and the image sensing method of the invention can effectively obtain the denoised object image.
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公开(公告)号：US20200134277A1
公开(公告)日：2020-04-30
申请号：US16526418
申请日：2019-07-30
发明人： Yu-Hsuan Lin , Tang-Hung Po , Hsien-Hsiang Chiu , Chung-Yi Wang
摘要： A fingerprint sensing module includes a fingerprint sensing pixel array, a plurality of column circuitries and a constant current circuit. The fingerprint sensing pixel array includes a plurality of sensing pixels in an array arrangement. Each column circuitry is electrically coupled to a row of the sensing pixels via a corresponding row signal line. The constant current circuit generates a bias voltage to the column circuitries according to a reference current. In response to the bias voltage level, a row output current provided by each column circuitry and flowing through each row of the sensing pixels is equal to or close to the reference current. Since the row output current coincides with the reference current, the row output current is not adversely affected by the external factors.
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5.发明申请公开(公告)号：US20200097700A1
公开(公告)日：2020-03-26
申请号：US16538124
申请日：2019-08-12
发明人： Yu-Hsuan Lin , Tang-Hung Po , Chung-Yi Wang
IPC分类号： G06K9/00
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：US20200097697A1
公开(公告)日：2020-03-26
申请号：US16523425
申请日：2019-07-26
发明人： Yu-Hsuan Lin , Tang-Hung Po , Chung-Yi Wang
IPC分类号： G06K9/00
摘要： An optical fingerprint sensor and a fingerprint identification method are provided. The optical fingerprint sensor includes a photosensitive element and a signal processing circuit. The signal processing circuit includes a logic unit, a variable/programmable gain amplifier and a processing unit. The logic unit is electrically coupled to the photosensitive element. The variable/programmable gain amplifier is electrically coupled to the logic unit. The processing unit is electrically coupled to the variable/programmable gain amplifier and the logic unit. The variable/programmable gain amplifier adaptively switches a gain between a first gain value and a second gain value, wherein the second gain value is larger than the first gain value. After the signals inputted into the variable/programmable gain amplifier are properly processed according to the first gain value or the second gain value, the optical fingerprint sensor acquires a sharp sensing image.
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公开(公告)号：US20230123651A1
公开(公告)日：2023-04-20
申请号：US17908528
申请日：2021-01-08
申请人： Egis Technology Inc.
发明人： Yu-Hsuan Lin , Tzu-Yang Peng , Chung-Yi Wang , Tzu-Li Hung
摘要： “An image sensing device is provided in the present invention. A control circuit determines a voltage change rate of a sensing signal according to a voltage value of the sensing signal generated by a light sensing unit during an estimation period, and controls an input adjustment circuit during an exposure period according to the voltage change rate to provide an input adjustment signal to a negative input end of an operational amplifier, such that a signal value of an amplified signal falls within a pre-set range during the exposure period.”
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公开(公告)号：US20230043448A1
公开(公告)日：2023-02-09
申请号：US17792410
申请日：2020-08-19
申请人： Egis Technology Inc.
发明人： Chung-Yi Wang , Yu-Hsuan Lin , Tzu-Li Hung
摘要： A detection circuit includes a first detection terminal, a second detection terminal, a first switch, a second switch, a first capacitor, a second capacitor and an amplifier. The first switch is coupled to the first detection terminal. The second switch is coupled to the second detection terminal. The first capacitor is coupled between the first switch and the second switch. The amplifier includes a first input terminal coupled to the second switch, a second input terminal used to receive an operation signal, and an output terminal used to output an output signal. The second capacitor is coupled between the first input terminal and the output terminal of the amplifier. The first switch and the second switch are turned on alternatively.
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公开(公告)号：US11126812B2
公开(公告)日：2021-09-21
申请号：US16809568
申请日：2020-03-05
发明人： Ching-Ho Hung , Chung-Yi Wang
IPC分类号： G06K9/00
摘要： The invention provides a fingerprint sensor including a sensing array. The sensing array includes a plurality of sensing units to form a plurality of sensing regions arranged in an array. Each of the plurality of sensing regions includes at least one column of sensing units. A first part of the plurality of sensing regions receives a power signal to perform fingerprint sensing. A second part of the plurality of sensing regions does not receive a power signal. Therefore, the fingerprint sensor of the invention can provide a fast and energy-saving large-area fingerprint sensing effect.
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公开(公告)号：US10990795B2
公开(公告)日：2021-04-27
申请号：US16792191
申请日：2020-02-15
发明人： Hsueh-Fang Yeh , Ming-Yuan Cheng , Chung-Yi Wang , Yu-Hsuan Lin
IPC分类号： G06K9/00
摘要： The disclosure provides a fingerprint sensing device, including a glass cover plate, a display panel, a fingerprint sensing module, a liquid crystal layer module, and a control circuit. The display panel is disposed below the glass cover plate, and provides illumination light to a finger. The fingerprint sensing module is disposed below the glass cover plate, and senses light reflected by the finger. The liquid crystal layer module is disposed on the fingerprint sensing module. The control circuit is coupled to the liquid crystal layer module, and drives the liquid crystal layer module to focus the illumination light to the finger or focus the light reflected by the finger to the fingerprint sensing module.
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