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公开(公告)号：US20220147729A1
公开(公告)日：2022-05-12
申请号：US17489605
申请日：2021-09-29
Applicant: BOE Technology Group Co., Ltd.
Inventor： Liang CUI , Lei WANG , Yangbing LI , Yubo WANG , Xiufeng LI , Yuanyuan MA
Abstract: The present disclosure provides a fingerprint sensing sub-circuit, a fingerprint sensing circuit, a fingerprint recognition method, a sensor, a touch display panel and a display device. The fingerprint sensing sub-circuit includes an acoustic wave generation circuit and an acoustic wave reception circuit. The acoustic wave generation circuit is configured to generate an ultrasonic wave. The acoustic wave reception circuit is configured to collect a voltage signal, convert the voltage signal into a current signal, and output the current signal to a signal output end. The acoustic wave generation circuit and the acoustic wave reception circuit are separated from each other, so that the fingerprint sensing sub-circuit operates in a mode where a transmitting operation and a receiving operation are separated from each other.
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公开(公告)号：US20240168143A1
公开(公告)日：2024-05-23
申请号：US17778119
申请日：2021-06-07
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Liang CUI , Xue DONG , Lei WANG , Yangbing LI , Yingzi WANG , Yanling HAN , Yubo WANG , Yue GOU
CPC classification number: G01S7/52019 , A61B8/145 , A61B8/54
Abstract: The present disclosure provides an ultrasonic imaging method and apparatus. The apparatus includes an ultrasonic signal emission source and a receiving array including ultrasonic signal receiving circuits; the method includes: turning on the source to perform emission of ultrasonic waves toward an object to be detected and causing the ultrasonic waves to propagate through the object, a depth-wise direction of which is along a propagation direction of the ultrasonic waves; after a first predetermined time period having elapsed since the source was turned on, turning on the receiving array to receive reflected echoes returning from a first section plane of the object to be detected perpendicular to the depth-wise direction; thereafter, turning off the receiving array, storing the reflected echoes by the ultrasonic signal receiving circuits and acquiring reflected echo signals, and successively reading the reflected echo signals from the ultrasonic signal receiving circuits during a reading time period.
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Patent Agency Ranking
公开(公告)号：US20220406086A1
公开(公告)日：2022-12-22
申请号：US17776638
申请日：2021-05-31
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yue GOU , Yingming LIU , Liang CUI , Xiufeng LI , Yanling HAN , Yaqian JI , Chenyang ZHANG , Peixiao LI , Yuzhen GUO , Yingzi WANG
IPC: G06V40/13 , H01L41/113 , H01L27/20
Abstract: An ultrasonic sensor, a preparation method of the ultrasonic sensor, and a display apparatus are provided. The ultrasonic sensor includes a texture recognition region and a contrast region. The contrast region is located on at least one side of the texture recognition region. The texture recognition region includes at least one recognizing unit, and the contrast region includes at least one contrast unit. The at least one recognizing unit includes a first dielectric material layer, and the at least one contrast unit includes a second dielectric material layer. The first dielectric material layer and the second dielectric material layer are made of a same material. The first dielectric material layer exhibits piezoelectric properties. A piezoelectric strain constant of the first dielectric material layer is greater than a piezoelectric strain constant of the second dielectric material layer.
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公开(公告)号：US20220004729A1
公开(公告)日：2022-01-06
申请号：US16959220
申请日：2019-08-21
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Pengpeng WANG , Haisheng WANG , Xiaoliang DING , Yingming LIU , Liang CUI , Yubo WANG , Yangbing LI , Xiufeng LI , Xueyou CAO
Abstract: A fingerprint identification circuit and a driving method thereof, a fingerprint identification module, and a display device are provided. The fingerprint identification circuit includes a plurality of first signal receiving circuit groups, a plurality of second signal receiving circuit groups, and a plurality of first signal acquisition lines. The plurality of first signal acquisition lines are arranged in one-to-one correspondence with the plurality of first signal receiving circuit groups, and each first signal acquisition line is connected with multiple first acquisition signal input terminals of multiple signal receiving circuits in a corresponding one of the first signal receiving circuit groups.
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公开(公告)号：US20220300733A1
公开(公告)日：2022-09-22
申请号：US17532670
申请日：2021-11-22
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Yubo WANG , Lei WANG , Yangbing LI , Liang CUI , Yuanyuan MA , Ping ZHANG , Yanling HAN
Abstract: A display device, a method for producing a display device, and a gesture recognition method are disclosed. The display device includes a display module including a base and an array substrate, a resin layer, a first electrode layer, a pixel definition layer, a light-emitting unit layer, a second electrode layer disposed opposite to the first electrode layer, and an encapsulation layer. The light-emitting unit layer is between the first electrode layer and the second electrode layer and includes a plurality of light-emitting units respectively in a plurality of openings of the pixel definition layer, and an ultrasonic sensor including the second electrode layer, a piezoelectric material layer between the first electrode layer and the pixel definition layer, and a third electrode layer between the pixel definition layer and the resin layer. The piezoelectric material layer includes a plurality of piezoelectric material units separated by the plurality of light-emitting units.
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公开(公告)号：US20210405808A1
公开(公告)日：2021-12-30
申请号：US17355776
申请日：2021-06-23
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Liang CUI , Haisheng WANG , Xiaoliang DING , Yingming LIU , Pengpeng WANG , Ping ZHANG , Yubo WANG , Xiufeng LI , Yuanyuan MA
Abstract: The present disclosure provides a touch panel including: a touch region having a plurality of ultrasonic signal detection circuits and a reference region having a plurality of reference circuits, each ultrasonic signal detection circuit includes an ultrasonic sensor and a first driving circuit; the ultrasonic sensor includes a first electrode, a second electrode, and a dielectric layer between the first electrode and the second electrode, the first driving circuit is configured to drive the ultrasonic sensor; each of the plurality of reference circuits includes a reference transceiver and a second driving circuit, the reference transceiver includes a third electrode, a fourth electrode, and a dielectric layer between the third electrode and the fourth electrode; the second driving circuit is configured to drive the reference transceiver; the dielectric layer of the ultrasonic sensor has piezoelectric sensitivity; the dielectric layer of the reference transceiver does not have the piezoelectric sensitivity.
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7.发明公开公开(公告)号：US20240069182A1
公开(公告)日：2024-02-29
申请号：US17765349
申请日：2021-05-21
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Liang CUI , Lei WANG , Yangbing LI , Yingzi WANG , Jiabin WANG , Yubo WANG , Yanling HAN
IPC: G01S7/534
Abstract: The disclosure provides an ultrasonic signal detection circuit including a sensing circuit, a unidirectional conduction circuit and a source follower circuit. The sensing circuit is connected to an input terminal of the source follower circuit through the unidirectional conduction circuit; the sensing circuit is configured to generate a piezoelectric signal according to a received ultrasonic echo signal and output the piezoelectric signal to the unidirectional conduction circuit. The piezoelectric signal is an alternating current signal; the unidirectional conduction circuit is configured to rectify the alternating current signal to only allow a forward or a reverse current portion thereof to pass through. The forward/reverse current portion charges/discharges the input terminal of the source follower circuit after passing through the unidirectional conduction circuit. The source follower circuit is configured to generate a detection signal according to a voltage at its input terminal and output the detection signal through its output terminal.
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