公开(公告)号：US11250779B2

公开(公告)日：2022-02-15

申请号：US16489750

申请日：2018-12-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji Yang ,  Xue Dong ,  Xiaochuan Chen ,  Hui Wang ,  Pengcheng Lu

IPC: G09G3/3258

Abstract: A pixel circuit includes a light-emitting element, a data write-in sub-circuit, a driving sub-circuit, a storage sub-circuit, a light-emission control sub-circuit, and a step-down sub-circuit. The step-down sub-circuit is configured to, at a charging compensation stage, step down a data voltage to acquire a first step-down voltage, and output the first step-down voltage via a control node. The storage sub-circuit is configured to, at the charging compensation stage, charge or discharge the control node to enable a potential at the control node to be the first step-down voltage, and at a light-emitting stage, maintain the potential at the control node as the first step-down voltage. The driving sub-circuit is configured to, at the light-emitting stage, enable a first end of the driving sub-circuit to be electrically connected to a first electrode of the light-emitting element under the control of the control node, to drive the light-emitting element to emit light.

公开(公告)号：US11216637B2

公开(公告)日：2022-01-04

申请号：US16316448

申请日：2018-04-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jian Gao ,  Xiaochuan Chen ,  Yafeng Yang ,  Pengcheng Lu

IPC: G06K9/00 ,  G02B6/42 ,  G06K9/20

Abstract: An optical fingerprint recognition device and a display device are disclosed. The optical fingerprint recognition device includes: a light source; a light guide plate including two light guide surfaces parallel to each other; a first volume grating, a second volume grating, respectively provided on one of the two light guide surface; and a light detector. The light detector is provided at a side of the light guide plate away from the second volume grating and configured to detect intensity distribution of the light exported by the second volume grating. The first volume grating is configured to import light emitted by the light source into the light guide plate. The light guide plate is configured to perform total reflection to the light imported into the light guide plate. The second volume grating is configured to export light propagated in the light guide plate.

公开(公告)号：US20210408134A1

公开(公告)日：2021-12-30

申请号：US16959043

申请日：2019-08-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Yunlong Li ,  Pengcheng Lu ,  Kui Zhang ,  Li Liu ,  Shengji Yang ,  Kuanta Huang ,  Xiaochuan Chen ,  Dacheng Zhang

IPC: H01L27/32 ,  H01L51/00 ,  H01L51/52 ,  H01L51/56

Abstract: A display substrate and a manufacturing method thereof, and a display device. The display substrate includes: a base substrate including a display region and a peripheral region surrounding the display region; a first light emitting element in the display region of the base substrate; and a color film structure on a display side of the first light emitting element. The color film structure includes: a first color film, including only a first pixel color film located in the display region; and a second color film, including a second pixel color film located in the display region and at least partially non-overlapping with the first pixel color film, and a first frame color film located in the peripheral region and surrounding the display region.

公开(公告)号：US20210408078A1

公开(公告)日：2021-12-30

申请号：US16959398

申请日：2019-08-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Kui Zhang ,  Pengcheng Lu ,  Li Liu ,  Yunlong Li ,  Dacheng Zhang

IPC: H01L27/12

Abstract: An electronic device substrate, a manufacturing method thereof, and an electronic device are provided. The electronic device substrate includes a base substrate, a first insulating layer, and light-emitting sub-units, a first conductive member and a second conductive member, which are on a side of the first insulating layer away from the base substrate. The light-emitting sub-units and the first conductive member are respectively in array region and periphery region, and the second conductive member is between the first conductive member and the array region; orthogonal projections of the first and second conductive members on the base substrate are spaced apart; each light-emitting sub-unit includes first and second driving electrodes, second driving electrodes of the light-emitting sub-units are integrated to form a first common electrode layer; the periphery region further includes a second common electrode layer electrically connected to the first conductive member and the first common electrode layer.

公开(公告)号：US11157712B2

公开(公告)日：2021-10-26

申请号：US17255922

申请日：2020-05-06

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji Yang ,  Xue Dong ,  Xiaochuan Chen ,  Hui Wang ,  Pengcheng Lu ,  Shengnan Li ,  Kuanta Huang

IPC: G06K9/00 ,  G06F3/041 ,  G06F3/044

Abstract: Fingerprint recognition driving circuit and method, fingerprint recognition module and touch screen are provided. The circuit includes: a first charge storing sub-circuit, a data acquiring sub-circuit configured to write output voltage of an ultrasonic sensor into a first end of the first charge storing sub-circuit, a driving sub-circuit including a driving transistor, a second charge storing sub-circuit, a circuit compensating sub-circuit configured to charge the second charge storing sub-circuit through the first charge storing sub-circuit and the driving transistor ill potential at a first end of the second charge storing sub-circuit equals the sum of output voltage of the ultrasonic sensor and threshold voltage of the driving transistor, and an output controlling sub-circuit configured to transmit a current signal output by the driving transistor to a signal reading circuit.

公开(公告)号：US20210313549A1

公开(公告)日：2021-10-07

申请号：US17266196

申请日：2020-07-02

Applicant: BOE Technology Group Co., Ltd.

Inventor： Junbo Wei ,  Kuanta Huang ,  Pengcheng Lu ,  Shengji Yang ,  Xiaochuan Chen

IPC: H01L51/56 ,  H01L51/52 ,  H01L27/32

Abstract: A display panel is provided and includes: a first substrate; an electrode arranged on the first substrate; an organic light-emitting layer arranged on a side of the electrode away from the first substrate; a photo-curable adhesive layer covering the organic light-emitting layer; a second substrate arranged on a side of the photo-curable adhesive layer away from the first substrate; and a light shielding structure located on a side of the second substrate facing the first substrate and located in an edge area which is located a side of the second substrate facing the electrode; wherein an orthographic projection of the light shielding structure on the first substrate does not overlap the orthographic projection of the organic light-emitting layer on the first substrate. A display device and a method for manufacturing a display panel are further provided.

公开(公告)号：US10969616B2

公开(公告)日：2021-04-06

申请号：US16077427

申请日：2018-01-05

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jian Gao ,  Xiaochuan Chen ,  Yafeng Yang ,  Jifeng Tan ,  Xianqin Meng ,  Pengcheng Lu

IPC: G02F1/1335 ,  G02F1/1343

Abstract: The present disclosure relates to a display mode controlling device, a controlling method thereof and a display device. The display mode controlling device includes: a first substrate including a plurality of lens units arranged in an array, each of the lens units is provided with an annular diffractive phase grating; a second substrate aligned with the first substrate; a liquid crystal (LC) layer located between the first substrate and the second substrate; and a control electrode configured to generate a predetermined electric field to control a deflection state of a LC molecule.

公开(公告)号：US10963105B2

公开(公告)日：2021-03-30

申请号：US15998617

申请日：2017-12-12

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengcheng Lu ,  Shengji Yang ,  Xiaochuan Chen ,  Minghua Xuan ,  Lei Wang ,  Jie Fu ,  Li Xiao ,  Jian Gao ,  Changfeng Li

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/047 ,  H01L27/32 ,  H01L51/52 ,  H01L51/56

Abstract: An in-cell touch display panel, a manufacturing method thereof, and a display device. The in-cell touch display panel includes a base substrate, a touch electrode, and a touch driver chip. The touch electrode includes a plurality of sub-electrodes that are independent from each other. The display panel further includes a plurality of touch leads that are in one-to-one correspondence with the sub-electrodes. Each of the sub-electrodes is connected to the touch driver chip through a corresponding touch lead. At least one sub-electrode has at least one non-conductive region, and an orthographic projection of the non-conductive region of the sub-electrode and that of the touch lead corresponding to the sub-electrode on the base substrate at least partially overlap.

公开(公告)号：US10957746B2

公开(公告)日：2021-03-23

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：US10818225B2

公开(公告)日：2020-10-27

申请号：US15775889

申请日：2017-11-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Minghua Xuan ,  Shengji Yang ,  Lei Wang ,  Li Xiao ,  Jie Fu ,  Xiaochuan Chen ,  Pengcheng Lu

IPC: G09G3/3233

Abstract: A pixel circuit is disclosed, which includes: a driving transistor, a capacitor, a data writing sub-circuit and a current controlling sub-circuit, wherein the current controlling sub-circuit is used for controlling a ratio of a total time during which the driving current flows into the current controlling sub-circuit to a total time during which the driving current flows into the light-emitting device under control of a second control signal inputted via a second control signal input line during a light-emitting stage. Moreover, a pixel driving method and a display device are disclosed.