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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.
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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.
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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
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.
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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.
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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.
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Patent Agency Ranking
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.
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公开(公告)号：US12272308B2
公开(公告)日：2025-04-08
申请号：US18421268
申请日：2024-01-24
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Xueling Gao , Kuanjun Peng , Chengchung Yang , Xiangxiang Zou , Wei Qin
IPC: G09G3/3233 , H10K59/121
Abstract: A display substrate and a display device. The display substrate includes a pixel circuit in which the driving circuit controls a driving current 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.
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公开(公告)号：US20250063926A1
公开(公告)日：2025-02-20
申请号：US18933874
申请日：2024-10-31
Inventor： Weitao Ma , Lu Yang , Chengchung Yang
IPC: H10K59/80 , H10K59/122 , H10K59/38
Abstract: A display panel includes: a substrate; a plurality of sub-pixels; an encapsulation layer; a light shielding layer which is located on a side of the encapsulation layer away from the substrate and is provided with a plurality of openings corresponding to the plurality of sub-pixels respectively; a first color film layer including a plurality of basic units covering the plurality of openings in the light shielding layer respectively; and a second color film layer which is located on a side of the first color film layer away from the substrate and includes a plurality of overlay units covering an edge of at least one basic unit of the plurality of basic units respectively. A color of the basic unit is different form a color of the overlay unit covering the basic unit.
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公开(公告)号：US12142212B2
公开(公告)日：2024-11-12
申请号：US18026637
申请日：2022-04-27
Inventor： Chengchung Yang , Yucheng Chan , Yangzhong Jing
IPC: G09G3/00 , G09G3/3233
Abstract: Provided are a pixel circuit, a drive method, and a display device. The pixel circuit includes a light-emitting element, a drive circuit, an energy storage circuit, a switch control circuit, a first initialization circuit, and a compensation control circuit. The switching control circuit controls a first voltage terminal to be connected to a second end of the energy storage circuit in a refresh frame and a first light-emitting phase and to control the first voltage terminal to be disconnected from the second end of the energy storage circuit in a first reset phase and a second reset phase under control of a switch control signal provided by the switch control terminal; a first initialization circuit writes a first initial voltage into the control terminal of the drive circuit under control of an initialization control signal in the first reset phase and the second reset phase.
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公开(公告)号：US11699394B2
公开(公告)日：2023-07-11
申请号：US17874508
申请日：2022-07-27
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Chengchung Yang
IPC: G09G3/3233
CPC classification number: G09G3/3233 , G09G2300/0426 , G09G2300/0819 , G09G2300/0842 , G09G2320/0257
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.
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