公开(公告)号：US20210350750A1

公开(公告)日：2021-11-11

申请号：US16338762

申请日：2018-10-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Xue DONG ,  Haisheng WANG ,  Yingming LIU ,  Changfeng LI ,  Wei LIU

IPC: G09G3/3266

Abstract: The present disclosure provides a pixel circuit, a method for driving the pixel circuit and a display device. A driving module of the pixel unit circuit includes a pixel compensation unit configured to transmit a read-control signal to the corresponding row of read-control line and transmit a gate drive-control signal to the gate drive circuit. The gate drive circuit is configured to, based on the gate drive-control signal, generate a plurality of gate drive signals, thereby controlling the rows of gate lines to be turned off in a reading period. One gate drive signal is corresponding to one row of gate line.

公开(公告)号：US20210303814A1

公开(公告)日：2021-09-30

申请号：US17264328

申请日：2020-06-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yingming LIU ,  Haisheng WANG ,  Xiaoliang DING ,  Lei WANG ,  Pengpeng WANG ,  Changfeng LI

IPC: G06K9/00

Abstract: A fingerprint identification device, a driving method thereof, and a display device are disclosed. The fingerprint identification device includes: a receiving electrode layer, a piezoelectric material layer, and a drive electrode layer. The piezoelectric material layer is between the receiving electrode layer and the drive electrode layer, the piezoelectric material layer is configured to emit ultrasonic waves under an excitation of at least a drive voltage, and is further configured to convert ultrasonic waves, which are emitted by the piezoelectric material layer and reflected by a fingerprint to be detected, into electrical signals; the drive electrode layer is configured to receive the drive voltage and a first fixed voltage simultaneously, and the receiving electrode layer is configured to output the electrical signals while receiving a second fixed voltage; the electrical signals are used for obtaining a fingerprint image.

公开(公告)号：US20210295004A1

公开(公告)日：2021-09-23

申请号：US17264013

申请日：2020-06-10

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yingming LIU ,  Xiaochuan CHEN ,  Haisheng WANG ,  Xiaoliang DING ,  Lei WANG ,  Changfeng LI ,  Xiufeng LI ,  Chenyang ZHANG

IPC: G06K9/00

Abstract: Embodiments of the present disclosure provide an ultrasonic fingerprint identification circuit, a driving method thereof, and a fingerprint identification device. The circuit includes a transmitting electrode, a receiving electrode, a piezoelectric layer disposed between the transmitting electrode and the receiving electrode, and a signal output unit, the transmitting electrode is configured to receive an alternating current signal in a transmitting stage; the receiving electrode is connected with the signal output unit. The circuit further includes a photosensitive unit, with an anode connected with the receiving electrode and a cathode connected with a first fixed electric level so that the photosensitive unit is in a reverse bias state.

公开(公告)号：US20210124441A1

公开(公告)日：2021-04-29

申请号：US16976255

申请日：2019-10-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Haisheng WANG ,  Yingming LIU ,  Pengpeng WANG ,  Likai DENG ,  Yangbing LI ,  Xueyou CAO ,  Ping ZHANG

IPC: G06F3/042 ,  G06K9/00 ,  H01L27/32

Abstract: Disclosed are a display substrate, a display device and a detection method by using a display device. The display substrate includes at least one sub-pixel. the at least one sub-pixel includes a first region and a second region, and the at least one sub-pixel includes a light emitting element which is arranged in the first region, and a pixel circuit structure and a photosensitive stucture which are arranged in the second region, the pixel circuit structure and the photosensitive structure are stacked, and the photosensitive structure is closer to a light exiting side of the display substrate than the pixel circuit structure.

公开(公告)号：US20210056905A1

公开(公告)日：2021-02-25

申请号：US16996248

申请日：2020-08-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yingming LIU ,  Haisheng WANG ,  Xiaoliang DING ,  Lei WANG ,  Pengpeng WANG ,  Changfeng LI

IPC: G09G3/3258 ,  H01L27/32 ,  H01L51/52

Abstract: The present disclosure discloses a pixel driving circuit, a driving method for the pixel driving circuit, a display panel and a display apparatus. The pixel driving circuit for driving a light emitting device includes: a threshold compensation subcircuit, a driving subcircuit and an optical signal detection subcircuit; the threshold compensation subcircuit is coupled to a control electrode of a driving transistor, and a first electrode of the driving transistor is coupled to the light emitting device; the optical signal detection subcircuit is coupled to the threshold compensation subcircuit; and the optical signal detection subcircuit is configured to detect an optical signal which is incident on a region where the optical signal detection subcircuit is located.

公开(公告)号：US20200343311A1

公开(公告)日：2020-10-29

申请号：US16080896

申请日：2018-01-08

Applicant: BOE Technology Group Co., Ltd.

Inventor： Changfeng LI ,  Xue DONG ,  Haisheng WANG ,  Yingming LIU ,  Xiaoliang DING ,  Rui XU ,  Pinchao GU ,  Pengcheng LU

IPC: H01L27/32 ,  G06F3/041 ,  G06K9/00

Abstract: The present disclosure relates to the field of display technologies, and provides a touch substrate and a display panel. Specifically, the touch substrate comprises: a pixel array and a light sensing device array arranged oppositely; a light shielding layer between the pixel array and the light sensing device array; and a lens array on a side of the light shielding layer remote from the light sensing device array. The pixel array comprises a plurality of pixel units, each pixel unit comprising a plurality of sub-pixels. The lens array comprises a plurality of lens units. The light sensing device array comprises a plurality of light sensing devices. The light shielding layer is provided with a plurality of via holes.

公开(公告)号：US20200285826A1

公开(公告)日：2020-09-10

申请号：US15774436

申请日：2017-10-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pinchao GU ,  Xue DONG ,  Haisheng WANG ,  Yingming LIU ,  Rui XU ,  Changfeng LI ,  Yuzhen GUO ,  Yunke QIN

IPC: G06K9/00 ,  H01L27/32 ,  G02B5/30

Abstract: The present disclosure provides a display substrate and a display device. The display substrate of the present disclosure comprises: an array (1) of optical sensing devices; an optical structure (2) disposed above the array (1) of optical sensing devices, wherein the optical structure (2) comprises a plurality of optical units (20) each of which comprises a light shading region (Q1) and a light transmission region (Q2); and a pixel array (3) disposed above the optical structure (2), wherein the pixel array (3) comprises a plurality of pixel units (30) each of which comprises subpixels of different colors.

公开(公告)号：US20200266242A1

公开(公告)日：2020-08-20

申请号：US16639282

申请日：2019-07-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaoliang DING ,  Xue DONG ,  Haisheng WANG ,  Yingming LIU ,  Pengpeng WANG ,  Yangbing LI ,  Jiabin WANG ,  Ping ZHANG ,  Likai DENG

IPC: H01L27/32 ,  H01L51/52

Abstract: Embodiments of the present disclosure provide an array substrate, a display device and a spatial positioning method of a display device. The display device includes a base substrate, a pixel layer arranged at a side of the base substrate, a light source structure having a same light exit direction as the pixel layer, a processing element. The light source structure to emits collimation invisible light, the pixel layer includes a plurality of sub-pixels and at least one sensing pixel arranged between the sub-pixels, the at least one sensing pixel receives reflected light of the collimation invisible light emitted by the light source structure and reflected by an object to be positioned, the processing element is coupled with the sensing pixel and the light source structure, a distance from the object to the display device is calculated according to relevant data information of the collimation invisible light and the reflected light.

公开(公告)号：US20200082146A1

公开(公告)日：2020-03-12

申请号：US16424561

申请日：2019-05-29

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lei WANG ,  Haisheng WANG ,  Yingming LIU ,  Xiaoliang DING ,  Changfeng LI ,  Xiaoquan HAI

IPC: G06K9/00 ,  G02B3/04 ,  G02B5/20 ,  G02B3/06

Abstract: Disclosed are an apparatus for recognizing a fingerprint, a display device, and the apparatus includes: a display panel, light sources, a supporting element, an optically-coupling element, a photo-detecting element on optical paths of the light sources, a processing element; the light sources, the supporting element are on side of a second surface of the display panel; the supporting element supports light sources so that light rays exiting light sources are incident obliquely onto the display panel; the optically-coupling element, the photo-detecting element are on the second surface; the photo-detecting element is on side of the optically-coupling element away from light sources; the optically-coupling element makes light rays emitted from light sources totally reflect in the display panel; the photo-detecting element detects exiting light after light rays exiting the light sources are reflected by the display panel, transmits detected signals to the processing element; the processing element determines a fingerprint pattern.

公开(公告)号：US20190294850A1

公开(公告)日：2019-09-26

申请号：US16316457

申请日：2018-03-08

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueyou CAO ,  Xue DONG ,  Jing LV ,  Haisheng WANG ,  Xiaoliang DING ,  Yingming LIU ,  Yanling HAN ,  Wei LIU ,  Chunwei WU ,  Pengpeng WANG ,  Ping ZHANG

IPC: G06K9/00

Abstract: The present disclosure discloses a fingerprint recognition device, a display substrate and a display apparatus. The fingerprint recognition device includes: at least one fingerprint detection component; at least one fingerprint recognition signal line, the fingerprint detection component outputs a detection current to the fingerprint recognition signal line; at least one noise reduction circuit serially coupled in the fingerprint recognition signal line, the noise reduction circuit being a resistive component; and a fingerprint determination circuit coupled to the fingerprint recognition signal line, configured to determine a morphology of a fingerprint according to a current signal, subjected to a noise reduction by the noise reduction circuit and transmitted by the fingerprint recognition signal line. The fingerprint recognition device can filter out the current generated by coupling the fingerprint recognition signal line with other data lines, the interference with the detection current is reduced, the accuracy of the fingerprint recognition is improved.