公开(公告)号：US20210096421A1

公开(公告)日：2021-04-01

申请号：US16887067

申请日：2020-05-29

Applicant: BOE Technology Group Co., Ltd.

Inventor： Sen Ma ,  Qian Wang ,  Zhongxiao Li ,  Qingxun Zhang ,  Wenqing Zhao ,  Xiaochuan Chen

IPC: G02F1/1335 ,  F21V8/00

Abstract: A display panel includes a light guide plate, a substrate, a reflector and a liquid crystal layer. A refractive index of the liquid crystal layer can vary between a minimum liquid crystal refractive index and a maximum liquid crystal refractive index. One side, facing the substrate, of the light guide plate includes a light entry region, light at least partially enters the liquid crystal layer through the light entry region and is propagated towards the reflector. The maximum liquid crystal refractive index is greater than a refractive index of the reflector, and the minimum reflective index is not greater than the refractive index of the reflector. When the refractive index of the liquid crystal layer is greater than the reflective index of the reflector, the reflector reflects at least a part of light entering the liquid crystal layer from the light entry region to the light guide plate.

公开(公告)号：US10930203B2

公开(公告)日：2021-02-23

申请号：US16450288

申请日：2019-06-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Han Yue ,  Minghua Xuan ,  Ning Cong ,  Ming Yang ,  Can Zhang ,  Can Wang ,  Xiaochuan Chen

IPC: G09G3/32

Abstract: A grayscale adjustment circuit, a driving method thereof and a display device are provided. The circuit includes: an input sub-circuit configured to output a signal of a data signal terminal to a driving sub-circuit under a control of the scanning signal terminal, the driving sub-circuit configured to store an output signal of the input sub-circuit and output a signal of the first voltage terminal to a switching control sub-circuit under a control of the output signal of the input sub-circuit, a switching time control sub-circuit configured to output a signal of each switching time signal terminal to the switching control sub-circuit under a control of each switching time control terminal, the switching control sub-circuit configured to output an output signal of the driving sub-circuit to the light-emitting sub-circuit under a control of an output signal of the switching time control sub-circuit to control the light-emitting sub-circuit to emit light.

公开(公告)号：US10929633B2

公开(公告)日：2021-02-23

申请号：US15751848

申请日：2017-07-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji Yang ,  Xue Dong ,  Hailin Xue ,  Xiaochuan Chen ,  Haisheng Wang ,  Yingming Liu ,  Lei Wang ,  Xiaoliang Ding ,  Rui Xu ,  Pengcheng Lu

IPC: G06K9/00 ,  G06F3/041 ,  H01L51/56

Abstract: Embodiments of the disclosure relate to a fingerprint identification device, a touch display panel, and a method for driving a fingerprint identification device. The fingerprint identification device for identification of a fingerprint of a finger, includes: at least one resonant chamber; and at least one ultrasonic generating and detecting device provided opposite to the at least one resonant chamber; each of the at least one ultrasonic generating and detecting device is configured to generate initial ultrasonic signals having a frequency which is identical to an initial intrinsic frequency of the resonant chamber in a condition of being untouched by the finger, and each of the at least one ultrasonic generating and detecting device is also configured to convert the ultrasonic signals reflected by ridges and valleys of the finger into electrical signals, and to determine information on pattern of the finger depending on the electrical signals.

公开(公告)号：US10923031B2

公开(公告)日：2021-02-16

申请号：US16087972

申请日：2018-02-12

Applicant: BOE Technology Group Co., Ltd.

Inventor： Shengji Yang ,  Xue Dong ,  Xiaochuan Chen ,  Hui Wang ,  Yanming Wang ,  Pengcheng Lu ,  Wei Liu ,  Huijuan Wang ,  Minghua Xuan

IPC: G09G3/3233 ,  G09G3/3258

Abstract: A pixel unit circuit includes a light emitting element, a first end being connected to a low level input end; a storage capacitor sub-circuit, a first end being connected to a DC voltage input end; a driving transistor, a gate electrode being connected to a second end of the storage capacitor sub-circuit, and a first electrode being connected to a second end of the light emitting element; a light emitting control sub-circuit, a control end being connected to a light emitting control line, the first end being connected to a high-level input end, and the second end being connected to a second electrode of the driving transistor, and configured to control whether the second electrode of the driving transistor is connected to the high level input end; and a charge compensation control sub-circuit, connected to a gate line, a data line and the gate electrode of the driving transistor.

公开(公告)号：US10921633B2

公开(公告)日：2021-02-16

申请号：US16619126

申请日：2019-06-14

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xiandong Meng ,  Jifeng Tan ,  Xiaochuan Chen ,  Wei Wang ,  Xianqin Meng

IPC: G02F1/1335 ,  F21V8/00 ,  G02F1/1343

Abstract: A display panel and a display device. The display panel includes a light guide plate including a light incident surface and a light emergent surface; the light incident surface is one end surface of the light guide plate; an opposite substrate opposite to the light guide plate; a liquid crystal layer between light guide plate and opposite substrate; a light source located on the light incident surface of light guide plate; a light shielding layer at the side, facing liquid crystal layer, of the opposite substrate; the light shielding layer including light shielding regions, light transmitting regions; light converging elements located on light emergent surface of light guide plate, the light converging elements corresponding to one light shielding region; a transparent conductive structure between light guide plate and opposite substrate and configured to make liquid crystal layer be equivalent to a diffraction grating structure under control of electric signals.

公开(公告)号：US10908463B2

公开(公告)日：2021-02-02

申请号：US15769027

申请日：2017-09-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chenyu Chen ,  Wenqing Zhao ,  Xiaochuan Chen ,  Xue Dong

IPC: G02F1/1343 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/1337 ,  G02F1/137

Abstract: The present disclosure relates to a display panel, a display device and a control method thereof. A display panel (10) includes: two oppositely-provided base substrates (101, 102); a plurality of liquid crystal regulation units (103) provided between the two base substrates; and a light shielding region (104) and a light transmitting region (105) located on a light emissive side of each of the liquid crystal regulation units, wherein each said liquid crystal regulation unit (103) includes a regulation electrode (31a) and a liquid crystal layer (31b), and the regulation electrode (31a) is used for controlling deflection of liquid crystals in the liquid crystal layer (31b), such that beams incident obliquely towards the light shielding region (104) are reflected by the liquid crystal layer corresponding to the light shielding region (104) to the light transmitting region (105).

公开(公告)号：US10886356B2

公开(公告)日：2021-01-05

申请号：US16394254

申请日：2019-04-25

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Pengcheng Lu ,  Kuanta Huang ,  Xiaochuan Chen ,  Shengji Yang ,  Hui Wang ,  Yanming Wang ,  Weihai Wang ,  Guohong Qin ,  Rongrong Shi ,  Yage Song ,  Jiantong Li

IPC: H01L27/32 ,  H01L27/12 ,  H01L51/52

Abstract: A display panel includes a base substrate, a first electrode contact portion, a light emitting layer, and a first electrode. The first electrode contact portion is disposed on the base substrate and surrounding a display area, and is separated from the display area by an isolation area. The light emitting layer covers the display area and at least a portion of the isolation area, and extends at least partially to an inner edge of the first electrode contact portion or a surface of the first electrode contact portion away from the base substrate. The first electrode is disposed on the light emitting layer and a portion of the first electrode contact portion that is not covered by the light emitting layer.

公开(公告)号：US10789864B2

公开(公告)日：2020-09-29

申请号：US15753488

申请日：2017-05-03

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Rui Xu ,  Xue Dong ,  Hailin Xue ,  Xiaochuan Chen ,  Haisheng Wang ,  Fuqiang Li ,  Lei Wang ,  Changfeng Li ,  Haifeng Xu ,  Yanzhao Peng ,  Weixin Meng ,  Dawei Shi ,  Jian Guo

IPC: G09F9/302 ,  G09F9/30 ,  G02F1/1345 ,  G02F1/133 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362 ,  G09G3/36 ,  G09G3/20

Abstract: The present disclosure provides a display screen and a display apparatus, the display screen comprising: a special-shaped display panel (01) of an irregular closed shape, and a display driving circuit (02) which is bonded at any edge of the special-shaped display panel (01) and configured to supply respective signals to gate lines and data lines in the special-shaped display panel (01).

公开(公告)号：US10789442B2

公开(公告)日：2020-09-29

申请号：US16322027

申请日：2018-05-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengji Yang ,  Xue Dong ,  Jing Lv ,  Xiaochuan Chen ,  Minghua Xuan ,  Weifeng Han

IPC: G06K9/00 ,  H01L27/32 ,  G09G3/3233

Abstract: A fingerprint recognition and pixel driving circuit and a display device including the circuit are provided. The circuit includes a first scan line, a second scan line, a third scan line, a light emission control line and a data writing line, a pixel driving sub-circuit for driving a light emitting element of a pixel to emit light according to the first scan signal, the second scan signal, the third scan signal, the light emission control signal, and the data signal, a fingerprint recognition sub-circuit that receives any two of the first scan signal, the second scan signal and the third scan signal through a first read terminal and a reset terminal to generate fingerprint data of a finger based on any two of the first scan signal, the second scan signal and the third scan signal, thereby realizing integration of the fingerprint recognition function with the pixel driving function.

公开(公告)号：US10784218B2

公开(公告)日：2020-09-22

申请号：US16317658

申请日：2018-05-10

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Li Xiao ,  Tingting Zhou ,  Xiaochuan Chen ,  Shengji Yang ,  Dongni Liu ,  Lei Wang ,  Jie Fu ,  Pengcheng Lu ,  Han Yue

IPC: H01L23/00 ,  H01L27/12 ,  H01L27/32 ,  G02F1/1345

Abstract: The present disclosure provides a display apparatus and a manufacturing method thereof. The display apparatus includes a silicon substrate, a plurality of metal data interfaces disposed on the silicon substrate, and a plurality of conductive patterns covering upper surfaces of the metal data interfaces respectively. The plurality of the conductive patterns is formed by enabling a semiconductor material to be conductive and the plurality of conductive patterns are not contacted with each other.