公开(公告)号：US11538417B2

公开(公告)日：2022-12-27

申请号：US17512208

申请日：2021-10-27

Applicant: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD. ,  BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Bo Yang ,  Chengchung Yang ,  Xiangfei He ,  Ling Shi

IPC: G09G3/3266 ,  G09G3/3233 ,  G11C19/28

Abstract: Embodiments of the present disclosure provide a light emission control shift register and method thereof, a gate driving circuit, and a display device. An input circuit outputs a signal of a signal input terminal to a first node. A first control circuit outputs a voltage of a first voltage terminal to a second node. A second control circuit transmits the voltage of the first voltage terminal to a third node. A third control circuit transmits the voltage of the first voltage terminal to a fourth node, and the third control circuit can further transmit the voltage of the second voltage terminal to the fourth node. A fourth control circuit transmits the voltage of the first voltage terminal to a signal output terminal, and the fourth control circuit can further transmit the voltage of the second voltage terminal to the signal output terminal.

公开(公告)号：US11348524B2

公开(公告)日：2022-05-31

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：US10991306B2

公开(公告)日：2021-04-27

申请号：US16456910

申请日：2019-06-28

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 of driving 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 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：US10971060B2

公开(公告)日：2021-04-06

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：US20200184922A1

公开(公告)日：2020-06-11

申请号：US16623036

申请日：2019-03-19

Applicant: BOE Technology Group Co., Ltd.

Inventor： Chengchung Yang

IPC: G09G5/00 ,  G11C19/28

Abstract: A shift register unit includes: an input circuit, configured to communicate an input terminal with a first node; an output control circuit, configured to provide a second clock signal for a second node when the first node is at a second level, and provide a first level for the second node when the first clock signal is at the second level; a reset control circuit, configured to provide the first level for the third node when the second clock signal and the first node are both at the second level, and provide the second level for the third node when the first clock signal is at the second level; and an output circuit, configured to provide the second level for an output terminal when the second node is at the second level, and provide the first level for the output terminal when the third node is at the second level.

公开(公告)号：US11455951B2

公开(公告)日：2022-09-27

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：US11373602B2

公开(公告)日：2022-06-28

申请号：US16605794

申请日：2019-05-13

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Tieshi Wang ,  Zhiqiang Xu ,  Xueling Gao ,  Chengchung Yang

IPC: G09G3/3275 ,  G09G3/3258 ,  G09G3/3233

Abstract: There are provided a pixel circuit and a method and apparatus for driving the same, an array substrate and a display apparatus. The pixel circuit includes: a driving sub-circuit and a switch sub-circuit coupled in series between a power signal terminal and a light emitting element, wherein the driving sub-circuit is configured to provide a driving signal to the light emitting element under control of a gate driving signal provided by a gate line, a data signal provided by a data line, and a power signal provided by a power signal terminal; and the switch sub-circuit is configured to control switch-on and switch-off of a signal path between the power signal terminal and the light emitting element under control of a switch signal provided by a switch signal terminal.

公开(公告)号：US11114061B2

公开(公告)日：2021-09-07

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：US11011117B2

公开(公告)日：2021-05-18

申请号：US16317361

申请日：2018-04-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chengchung Yang

IPC: G09G3/3266 ,  G09G3/36 ,  G11C19/28 ,  G09G3/3225

Abstract: The present disclosure provides a shift register, a drive method thereof, a drive control circuit, and a display apparatus, the shift register comprises an input sub-circuit (1), a first control sub-circuit (2), a second control sub-circuit (3), a third control sub-circuit (4), a node stabilization sub-circuit (5), a first output sub-circuit (6), and a second output sub-circuit (7).

公开(公告)号：US10971069B2

公开(公告)日：2021-04-06

申请号：US16616234

申请日：2019-04-18

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Tieshi Wang ,  Kuanjun Peng ,  Wei Qin ,  Chengchung Yang ,  Xueling Gao ,  Xiaolong Li ,  Zhiqiang Xu ,  Yan Wei ,  Shengnan Li

IPC: G09G3/3258

Abstract: A pixel driving circuit, a driving method and a display device are provided. The pixel driving circuit includes a driving unit, a capacitor unit, a data write-in unit connected to a corresponding gate line, a corresponding data line and the driving unit, a power source control unit connected to a first light-emitting control end, a power source signal input end and the driving unit, and a first light-emitting control unit connected to a second light-emitting control end, the power source signal input end and the driving unit and configured to, within a predetermined time period of a light-emitting stage, control the power source signal input end to be electrically connected to the driving unit under the control of the second light-emitting control end, stop the operation of the driving unit, and enable the light-emitting unit not to emit light.