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：US20200342813A1

公开(公告)日：2020-10-29

申请号：US16631777

申请日：2019-08-30

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueling GAO ,  Kuanjun PENG ,  Wei QIN ,  Wanpeng TENG

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A pixel driving circuit is provided. The pixel driving circuit includes an initialization circuit, a driving circuit, and a first light-emitting control circuit. A first terminal of the driving circuit is coupled to a power voltage terminal, a second terminal of the driving circuit is coupled to a light-emitting element via the first light-emitting control circuit. The initialization circuit is configured to write an initialization voltage to a control terminal of the driving circuit under control of an initialization control signal input from an initialization control line, so that the driving circuit brings a connection between the first and second terminals into a conducting state under control of the control terminal. The first light-emitting control circuit is configured to bring a connection between the second terminal and the light-emitting element into a conducting state under control of a first light-emitting control signal input from a first light-emitting control line.

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：US20200033618A1

公开(公告)日：2020-01-30

申请号：US16442975

申请日：2019-06-17

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xiaolong LI ,  Wei QIN ,  Kuanjun PENG ,  Xueling GAO ,  Fangzhen ZHANG ,  Jintao PENG ,  Jinqian WANG ,  Miaomiao YANG ,  Shuang SUN ,  Chunfang ZHANG ,  Shengnan LI

IPC: G02B27/22 ,  G02B5/124 ,  G02B27/26

Abstract: A semi-transparent semi-retroreflective film and an air display device are provided. The air display device includes: a first polarizer and a second polarizer assembled with each other to form a cell; a semi-transparent semi-reflective structure and a semi-transparent semi-retroreflective film disposed between the first polarizer and the second polarizer; a first ¼ wave plate disposed at a side of the air display device adjacent to the first polarizer; and a second ¼ wave plate disposed between the semi-transparent semi-reflective structure and the semi-transparent semi-retroreflective film. The air display device is configured such that polarized light incident from the first polarizer, after being processed by an internal optical path of the air display device, exits from the second polarizer to form an air image at a side of the air display device away from the first polarizer.

公开(公告)号：US20220335891A1

公开(公告)日：2022-10-20

申请号：US17859159

申请日：2022-07-07

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueling GAO

IPC: G09G3/3233

Abstract: A pixel circuit and a method of driving the same, and a display panel. The pixel circuit includes a drive circuit, a data writing circuit, a compensating circuit, a reset circuit and a first light emitting control circuit. The drive circuit is configured to control a drive current for driving a light emitting element to emit light; the data writing circuit is configured to write a data signal to the first terminal of the drive circuit; the compensating circuit is configured to compensate the drive circuit; the reset circuit is configured to apply a reset voltage to the control terminal of the drive circuit and the first terminal of the light emitting element; the first light emitting control circuit is configured to apply a first voltage of the first voltage terminal to the first terminal of the drive circuit.

公开(公告)号：US20220246098A1

公开(公告)日：2022-08-04

申请号：US17726875

申请日：2022-04-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

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

Abstract: A circuit for driving a pixel includes a driving transistor having a first end connected to a first node, a control end connected to a second node, and a second end connected to a third node; a writing circuit connected to a first scanning signal and the first node and configured to transmit a data signal to the first node; a reset circuit connected to a second scanning signal and configured to transmit a reference signal to the second node; a compensation circuit connected to a compensation control signal and configured to put through a connection between the second end and the control end of the driving transistor in response to the compensation control signal, wherein the compensation control signal is different from the first scanning signal and the second scanning signal; and an energy storage circuit connected between a first power end and the second node.

公开(公告)号：US20210280132A1

公开(公告)日：2021-09-09

申请号：US17327937

申请日：2021-05-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

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

IPC: G09G3/3233

Abstract: A display substrate and a display device. The display substrate includes a pixel circuit in which the driving circuit controls a driving current for driving the light emitter element to emit light; the first light emission control circuit applies a first voltage to a first terminal of the driving circuit in response to a first light emission control signal; the second light emission control circuit applies the driving current to the light emitter element in response to a second light emission control signal; the first reset circuit applies a first reset voltage to the control terminal of the driving circuit in response to a first reset signal; the first reset signal and the first light emission control signal are simultaneously turn-on signals during a period; the first light emission control line and the second light emission control line extend along a first direction and are arranged in a second direction.

公开(公告)号：US20210225288A1

公开(公告)日：2021-07-22

申请号：US16772796

申请日：2019-12-09

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wanpeng TENG ,  Xueling GAO

IPC: G09G3/3258

Abstract: A pixel-driving circuit includes: a write-compensation sub-circuit coupled to a signal scanning terminal, a data terminal and a driving sub-circuit, and configured to, controlled with voltage from the signal scanning terminal, provide voltages of the data terminal to the driving sub-circuit for compensation; the light-emission control sub-circuit is coupled with the light-emission terminal, the first power source terminal and the driving sub-circuit and configured to provide voltages of the first power source terminal to the first terminal of the driving transistor controlled with voltage from the light-emission control terminal; the reset sub-circuit is coupled with the reset signal terminal, the initial voltage terminal, and the driving sub-circuit and to provide voltages of the initial voltage terminal to the gate of the driving transistor controlled with voltage from the reset signal terminal, causing the driving transistor to be in ON and OFF states respectively during the first and second initialization phases.

公开(公告)号：US20210074214A1

公开(公告)日：2021-03-11

申请号：US16767053

申请日：2019-12-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Shengnan LI ,  Xueling GAO

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A pixel driving circuit, a pixel driving method and a display device are provided. The pixel driving circuit includes a driving circuit, an initialization circuit and a compensation control circuit. The compensation control circuit is configured to control a control end of the driving circuit to be electrically connected to a second end of the driving circuit under the control of a compensation control line. The initialization circuit is configured to write an initial voltage into the second end of the driving circuit under the control of an initialization control line.

公开(公告)号：US20200302867A1

公开(公告)日：2020-09-24

申请号：US16769420

申请日：2019-11-11

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xueling GAO ,  Kuanjun PENG ,  Wei QIN ,  Zhiqiang XU ,  Tieshi WANG ,  Xiaolong LI ,  Jintao PENG

IPC: G09G3/3258 ,  G09G3/3275

Abstract: A pixel driving circuit and a driving method thereof, and a display panel are provided. The pixel driving circuit includes a driving sub-circuit, a reset sub-circuit, a light-emitting control sub-circuit, and a first compensation sub-circuit, the reset sub-circuit, the light-emitting control sub-circuit, and the first compensation sub-circuit are configured to, in an initialization phase, under control of a first driving signal and a second driving signal, provide the first power supply voltage provided by the first power supply input terminal to the control terminal of the driving sub-circuit; the first terminal of the driving sub-circuit is connected to the second power supply input terminal to receive the second power supply voltage; and the first power supply voltage and the second power supply voltage are configured to cause the driving sub-circuit to be in an on-bias state in the initialization phase.