公开(公告)号：US11527095B2

公开(公告)日：2022-12-13

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

IPC: G06V40/13 ,  G06V10/98 ,  G06F3/043

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.

公开(公告)号：US20220343669A1

公开(公告)日：2022-10-27

申请号：US17422242

申请日：2020-09-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Liang Cui ,  Lei Wang ,  Yangbing Li ,  Yubo Wang ,  Xiufeng Li ,  Yuanyuan Ma

IPC: G06V40/13 ,  G06V40/12

Abstract: A method for identifying a fingerprint, includes: performing a plurality of signal load operations on a plurality of transmit electrodes; in response to performing the signal load operations on the transmit electrodes, acquiring a fingerprint signal by a target electrode of the receive electrodes; and identifying a fingerprint based on acquired fingerprint signals.

公开(公告)号：US12169258B2

公开(公告)日：2024-12-17

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

IPC: G01S7/52 ,  A61B8/14 ,  A61B8/00

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.

公开(公告)号：US11521417B2

公开(公告)日：2022-12-06

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

IPC: G06V40/13 ,  G06F3/041 ,  G06F3/043

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.