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公开(公告)号：US20220179078A1
公开(公告)日：2022-06-09
申请号：US17522927
申请日：2021-11-10
申请人： Egis Technology Inc.
发明人： Tung-Yu Wu , Tang-Hung Po , Sheng Wan
IPC分类号： G01S17/46 , G01S7/48 , G01S7/4865 , G01S7/4863
摘要： A time-of-flight ranging device and a time-of-flight ranging method are provided. The time-of-flight ranging device includes a light source, a sensing array, and a time-to-digital converter. The light source emits a laser pulse signal towards a sensing target. The sensing array includes a plurality of sensing units. The sensing array is configured to sense reflected pulse light generated when the sensing target reflects the laser pulse signal. The time-to-digital converter is coupled to the sensing array. The time-to-digital converter performs an integration operation on a plurality of sensing results of the sensing units during a plurality of consecutive integration periods to generate histogram data. At least part of the integration periods have different time lengths, such that at least part of a plurality of bins in the histogram data have different bin widths.
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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：US20210182526A1
公开(公告)日：2021-06-17
申请号：US16935177
申请日：2020-07-21
申请人： Egis Technology Inc.
发明人： Ming-Yuan Cheng , Tang-Hung Po , Yu-Hsuan Lin
IPC分类号： G06K9/00 , H01L27/146
摘要： A fingerprint sensing system including a plurality of micro-lenses, a sensor, a shielding structure and a controller is provided. The micro-lenses are arranged in an array. The sensor has a plurality of sensing pixels arranged in an array. The sensor, the shielding structure and the micro-lenses are sequentially arranged along an arrangement direction. The controller is electrically connected to the sensor. A pitch between the micro-lenses is greater than a pitch between the sensing pixels. The controller forms a fingerprint image according to signals of a plurality of output pixels of the sensor, wherein each of the output pixels is one of every at least four of neighboring sensing pixels. An operation method of a fingerprint sensing system is also provided.
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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：US11288893B2
公开(公告)日：2022-03-29
申请号：US17073417
申请日：2020-10-19
申请人： Egis Technology Inc.
发明人： Tung-Yu Wu , Tang-Hung Po , Yu-Hsuan Lin , Bruce C. S. Chou
IPC分类号： G06V40/12 , G02F1/1333 , G02F1/163 , G06V40/40 , G06N3/02
摘要： A touch display device with a fingerprint anti-spoofing function and an associated fingerprint anti-spoofing method are provided, where the touch display device may include a touch display panel and a processing circuit. The touch display panel may include a plurality of display units and one or more codebooks, where each of the display units includes a sensor unit, and the one or more codebooks may make the sensor units receive sensing information of an object which is put on the touch display panel. In addition, the processing circuit may obtain the sensing information from the sensor units, and determine whether the object is a real finger based on the sensing information and reference information.
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公开(公告)号：US10824836B2
公开(公告)日：2020-11-03
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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公开(公告)号：US11600097B2
公开(公告)日：2023-03-07
申请号：US16935177
申请日：2020-07-21
申请人： Egis Technology Inc.
发明人： Ming-Yuan Cheng , Tang-Hung Po , Yu-Hsuan Lin
IPC分类号： G06V40/13 , H01L27/146
摘要： A fingerprint sensing system including a plurality of micro-lenses, a sensor, a shielding structure and a controller is provided. The micro-lenses are arranged in an array. The sensor has a plurality of sensing pixels arranged in an array. The sensor, the shielding structure and the micro-lenses are sequentially arranged along an arrangement direction. The controller is electrically connected to the sensor. A pitch between the micro-lenses is greater than a pitch between the sensing pixels. The controller forms a fingerprint image according to signals of a plurality of output pixels of the sensor, wherein each of the output pixels is one of every at least four of neighboring sensing pixels. An operation method of a fingerprint sensing system is also provided.
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公开(公告)号：US20220179079A1
公开(公告)日：2022-06-09
申请号：US17522932
申请日：2021-11-10
申请人： Egis Technology Inc.
发明人： Tung-Yu Wu , Tang-Hung Po , Sheng Wan
IPC分类号： G01S17/46 , G01S7/48 , G01S7/4865 , G01S7/4863
摘要： A time-of-flight ranging device and a time-of-flight ranging method are provided. The time-of-flight ranging device includes a light source, a sensing array, and a time-to-digital converter. The light source sequentially emits a plurality of laser pulse signals towards a sensing target. The sensing array senses rays of reflected pulse light generated when the sensing target reflects the laser pulse signals. The time-to-digital converter performs integration operations on a plurality of sensing results of a plurality of sensing units during a plurality of consecutive ranging periods to generate a plurality of pieces of first histogram data. The control circuit performs a mathematical operation on the pieces of first histogram data to generate second histogram data. The ranging periods have delay periods among one another, such that a plurality of periods of start time of the pieces of first histogram data are sequentially delayed by a plurality of time lengths.
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