公开(公告)号：US11244611B2

公开(公告)日：2022-02-08

申请号：US16318321

申请日：2018-05-28

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Chengchung Yang

IPC: G09G3/3233 ,  G09G3/3266

Abstract: The present disclosure relates to a pixel circuit and a method of driving the same, and a display device. A pixel circuit, including: a light emitting device; a driving sub-circuit configured to drive the light emitting device, the driving sub-circuit including a driving transistor configured to generate a driving current flowing through the light emitting device so that the light emitting device emits light; and a reset sub-circuit configured to reset a voltage between a gate electrode and a second electrode of the driving transistor.

公开(公告)号：US11238788B2

公开(公告)日：2022-02-01

申请号：US16759575

申请日：2019-05-24

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Wei Qin ,  Kuanjun Peng ,  Chengchung Yang ,  Xiaolong Li ,  Zhiqiang Xu

IPC: G09G3/3225 ,  G09G3/3266

Abstract: The present disclosure provides an OLED panel, a driving method thereof and a display device. The OLED panel has pixel units arranged in rows and columns, and each including an OLED device. The OLED panel includes regions arranged in column direction, and each including at least one row of pixel units and a cathode layer, the OLED devices in each region share the cathode layer therein, and the cathode layer of each region is disconnected from the cathode layer of any other region. The OLED panel includes a cathode voltage supply circuit configured to output a cathode voltage including an operating level to the cathode layer. The cathode voltage supply circuit is configured to start outputting the operating level to the cathode layer of at least one region at a time at least later than a time when all pixel units in the region receive a scan signal.

公开(公告)号：US20210367003A1

公开(公告)日：2021-11-25

申请号：US16330561

申请日：2018-07-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Tingting Zhou ,  Chengchung Yang ,  Bin Zhang

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

Abstract: The present application provides a display substrate having a plurality of subpixel areas. The display substrate includes a base substrate; a first electrode layer on the base substrate and including a plurality of first electrodes respectively in the plurality of subpixel areas; an auxiliary electrode layer; and an insulating layer between the first electrode layer and the auxiliary electrode layer. The first electrode layer and the auxiliary electrode layer are spaced apart and insulated from each other by the insulating layer. An orthographic projection of each individual one of the plurality of first electrodes on the base substrate at least partially overlap with an orthographic projection of the auxiliary electrode layer on the base substrate. Each of the plurality of first electrodes is electrically connected to a pixel circuit configured to drive light emission in a respective one of the plurality of subpixel areas.

公开(公告)号：US11030959B2

公开(公告)日：2021-06-08

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：US10726782B2

公开(公告)日：2020-07-28

申请号：US16390204

申请日：2019-04-22

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xueling Gao ,  Jikai Yao ,  Kuanjun Peng ,  Chengchung Yang

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  H01L27/32

Abstract: A pixel circuit, a method for driving the same, a display panel and a display device are provided. The pixel circuit includes a driver transistor, a data writing sub-circuit, an initializing sub-circuit, a voltage prewriting sub-circuit, a threshold compensating sub-circuit, a first light-emission control sub-circuit, a second light-emission control sub-circuit, a capacitor, and a light-emitting element. The voltage prewriting sub-circuit pre-stores voltage of a light-emission supply voltage terminal into the capacitor before the light-emitting element emits light, the magnitude of light-emission current is dependent upon the voltage of the light-emission supply voltage terminal, and independent of the voltage of the first voltage source.

公开(公告)号：US10658609B2

公开(公告)日：2020-05-19

申请号：US16117663

申请日：2018-08-30

Applicant: BOE Technology Group Co., Ltd.

Inventor： Chengchung Yang ,  Tingting Zhou

IPC: H01L51/52 ,  H01L27/32 ,  H01L21/8238

Abstract: Embodiments of the present disclosure provide an array substrate and a display apparatus having the array substrate. The array substrate includes: a plurality of pixel units which are arranged in an array and, which include a plurality of pixel electrodes arranged at intervals, respectively; a conductive layer disposed above or below two adjacent ones of the plurality of pixel electrodes, and configured such that when a preset electric potential is applied to the conductive layer, a first equivalent capacitance is formed between the conductive layer and a first one of the two adjacent pixel electrodes and a second equivalent capacitance is formed between the conductive layer and a second one of the two adjacent pixel electrodes.

公开(公告)号：US20250169318A1

公开(公告)日：2025-05-22

申请号：US18842449

申请日：2023-09-26

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

Inventor： Yunpeng Zhang ,  Chengchung Yang ,  Yangzhong Jing ,  Yucheng Chan ,  Xiangfei He

IPC: H10K59/35 ,  H10K59/122 ,  H10K59/18

Abstract: The displaying region of a displaying base board includes a center region containing first pixel units arranged in an array and an edge region containing second pixel units. The area of a light emitting region of each of the second pixel units is greater than the area of a light emitting region of each of the first pixel units. The displaying base board includes a first electrically conductive layer, and the first electrically conducting layer includes a plurality of anodes. Each of the pixel units includes a plurality of sub-pixels, and for the sub-pixels of the same color, the area of the orthographic projection on the substrate of each of the anodes of the sub-pixels located within the edge region is greater than the area of the orthographic projection on the substrate of each of the anodes of the sub-pixels located within the center region.

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.