公开(公告)号：US20190213957A1

公开(公告)日：2019-07-11

申请号：US16151665

申请日：2018-10-04

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueling GAO ,  Chengchung YANG

IPC: G09G3/3291 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3283

CPC classification number: G09G3/3291 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3283 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0439 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/0233 ,  G09G2320/045

Abstract: The present disclosure relates to a pixel circuit and a method of driving the pixel circuit, and a display device. A pixel circuit, including: a light emitting device; a driving circuit; a data writing circuit; a light emitting control circuit; a threshold compensation circuit; a first storage circuit; and a second storage circuit.

公开(公告)号：US20240427443A1

公开(公告)日：2024-12-26

申请号：US18029368

申请日：2022-06-01

Applicant: Chengdu BOE Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Yangzhong JING ,  Chengchung YANG ,  Yucheng CHAN

IPC: G06F3/041

Abstract: The present disclosure relates to a touch display panel and a display apparatus. The touch display panel includes a touch region and a switching region, where the touch region provided with a light-emitting structure is adjacent to the switching region. The touch display panel includes: a substrate, a trace where at least part of the trace is located in the switching region on the substrate, a touch signal line, located at a side of the trace away from the substrate, and a touch connection line, electrically connected with the touch signal line and disposed in a different layer from the trace and the touch signal line. In a direction perpendicular to the substrate, the touch connection line is overlapped with at least partial edge of the trace. According to the embodiments of the present disclosure, large-area short-circuiting on the display panel can be avoided.

公开(公告)号：US20210383752A1

公开(公告)日：2021-12-09

申请号：US16328372

申请日：2018-07-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chengchung YANG

IPC: G09G3/3233

Abstract: A pixel circuit, a driving method thereof and a display device are disclosed. The pixel circuit includes: a reset sub-circuit, a drive sub-circuit, a write sub-circuit, a compensation sub-circuit, a light-emitting control sub-circuit and a light-emitting element. The drive transistor is in the on-bias state in the reset period; the write sub-circuit is configured to write a data voltage of the data voltage terminal into the drive sub-circuit; the compensation sub-circuit is configured to compensate a threshold voltage of the drive transistor in the drive sub-circuit; the light-emitting control sub-circuit is configured to transmit a drive current, generated by the drive sub-circuit under action of the first voltage terminal, the second voltage terminal and the data voltage written into the drive sub-circuit, to the light-emitting element; and the light-emitting element is configured to emit light according to the drive current.

公开(公告)号：US20210334498A1

公开(公告)日：2021-10-28

申请号：US16343769

申请日：2018-11-15

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Jing NIU ,  Chengchung YANG ,  Fangzhen ZHANG

IPC: G06K9/00 ,  H01L27/32 ,  H01L51/52

Abstract: A display substrate includes a base substrate, and a plurality of light emitters and a plurality of light sensors over the base substrate. The light emitters and light sensors are configured to respectively emit lights towards, and sense lights reflected by, a pattern to be detected, such as a fingerprint. At least one light emitter includes a first electrode, a light-emitting layer, and a second electrode, sequentially over the base substrate. At least one light sensor includes a third electrode, a photosensitive layer, and a fourth electrode, sequentially over the base substrate. The first electrode and the third electrode are integral or the second electrode and the fourth electrode are integral. A method of using the display substrate to identify a pattern such as a fingerprint can be employed by a display panel containing the display substrate.

公开(公告)号：US20210241697A1

公开(公告)日：2021-08-05

申请号：US17234873

申请日：2021-04-20

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Tieshi WANG ,  Xueling GAO ,  Zhiqiang XU ,  Chengchung YANG ,  Haoran LIU

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3233

Abstract: A method of driving a pixel includes providing a driving transistor having a first end connected to a first node, a control end connected to a second node, and a second connected to the third node end; a writing circuit connected a data signal end, a first scanning end and the first node; a first control circuit connected to a first power end, a light emitting control end and the first node; a reset circuit connected to a reference signal end, a second scanning end, and the second node; a compensation circuit connected between the second node and the third node; a second control circuit connected to the third node, a light emitting element, and the light emitting control end; and an energy storage circuit connected between the first power end and the second node. The second end of the light emitting element receives a second voltage signal.

公开(公告)号：US20210142764A1

公开(公告)日：2021-05-13

申请号：US16623609

申请日：2019-05-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueling GAO ,  Kuanjun PENG ,  Chengchung YANG ,  Zhiqiang XU ,  Wei QIN ,  Tieshi WANG ,  Xiaolong LI ,  Shengnan LI ,  Wanpeng TENG

IPC: G09G5/10 ,  G09G3/3275

Abstract: The present disclosure relates to a light-emission control signal generating device and a display device. The light-emission control signal generating device includes: a state detection circuit configured to detect whether a current frame is a static frame or a dynamic frame and output an indication signal indicating the static frame or the dynamic frame; and a plurality of light emission control signal generation circuits; wherein the plurality of light emission control signal generation circuits are divided into a plurality of blocks, and individual blocks are input with different light emission enable signals based on the indication signal to generate light emission control signals.

公开(公告)号：US20200273411A1

公开(公告)日：2020-08-27

申请号：US16650217

申请日：2018-09-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueling GAO ,  Kuanjun PENG ,  Chengchung YANG ,  Xiangxiang ZOU ,  Wei QIN

IPC: G09G3/3291

Abstract: A pixel circuit and a driving method thereof and a display device are provided. In the pixel circuit, a driving circuit is configured to control a driving current flowing through a first terminal and a second terminal of the driving circuit for driving a light emitter element to emit light; a data writing circuit is configured to write a data signal to a control terminal of the driving circuit in response to a scan signal; a first light emission control circuit is configured to apply a first voltage to the first terminal in response to a first light emission control signal; a first reset circuit is configured to apply a reset voltage to the control terminal in response to a first reset signal. The driving circuit is in a fixed bias state when the reset voltage and the first voltage are applied together to the driving circuit.

公开(公告)号：US20200074921A1

公开(公告)日：2020-03-05

申请号：US16614709

申请日：2019-04-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Kuanjun PENG ,  Chengchung YANG ,  Zhiqiang XU

IPC: G09G3/3208

Abstract: A method of adjusting display brightness, a light-emission control circuit and a display device are provided. A method of adjusting display brightness is applied to an light-emission control circuit, where the light-emission control circuit is configured to generate an light-emission control signal configured to control a light-emission of a display device. The method includes: adjusting, in the case that a display brightness of the display device is not within a predetermined brightness range, a duty ratio of the light-emission control signal, to enable the display brightness of the display device to fall into the predetermined brightness range.

公开(公告)号：US20190333447A1

公开(公告)日：2019-10-31

申请号：US16251903

申请日：2019-01-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chengchung YANG ,  Kuanjun PENG ,  Wei QIN ,  Zhiqiang XU ,  Yan WEI

IPC: G09G3/3233

Abstract: A display method includes: determining whether there is a dynamic part in a current frame of picture, according to image data of a previous frame of picture and the current frame of picture; in a case where there is no dynamic part in the current frame of picture, in a display stage of the current frame of picture, providing a first light emitting control signal being always at an effective electric level state to each of pixel units of a display panel; in a case where there is a dynamic part in the current frame of picture, in the display stage of the current frame of picture, providing a second light emitting control signal, including a part at an effective electric level state and a part at a non-effective electric level state, to pixel units corresponding to at least a part of the dynamic part.

公开(公告)号：US20250056968A1

公开(公告)日：2025-02-13

申请号：US18933063

申请日：2024-10-31

Applicant: Chengdu BOE Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Weitao MA ,  Lu YANG ,  Chengchung YANG ,  Xiangfei HE

IPC: H10K50/86 ,  H10K59/122 ,  H10K59/35

Abstract: Provided are a display panel and a display apparatus. The display panel includes: a base substrate; a light-emitting layer, the light-emitting layer is located on one side of the base substrate and has a plurality of light-emitting portions; an encapsulation layer, the encapsulation layer is located on the side of the light-emitting layer that faces away from the base substrate; a black matrix layer, wherein the black matrix layer is located at the side of the encapsulation layer that faces away from the light-emitting layer, and has black matrix openings in areas corresponding to the light-emitting portions, the main body shape of each of the black matrix openings is a polygon, and arc-shaped curves are provided at least at corner positions of the polygon, so as to realize a mutual transition connection between various edges f the polygon; and a color film layer.