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51.发明公开公开(公告)号：US20230162685A1
公开(公告)日：2023-05-25
申请号：US17631780
申请日：2021-03-05
Applicant: BOE Technology Group Co., Ltd.
Inventor： Jiangnan Lu , Guangliang Shang , Xinshe Yin , Libin Liu , Ke Feng
IPC: G09G3/3266 , G11C19/28
CPC classification number: G09G3/3266 , G11C19/28 , G09G2310/0286 , G09G2300/0408
Abstract: A shift register unit, a method for driving a shift register unit, a gate driving circuit, and a display device are provided. The shift register unit includes: an input control circuit, configured to control a level of the first node; a first control circuit, configured to control a level of the second node; a second control circuit, configured to control the level of the second node under control of a fourth clock signal and an output signal; an output circuit, configured to control a level of the output terminal under control of the level of the first node and the level of the second node; and a first reset circuit, configured to control the level of the output terminal under control of the first enable signal, so as to allow the output terminal to stably output a non-operating level during a detection phase.
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公开(公告)号：US11605341B2
公开(公告)日：2023-03-14
申请号：US17424478
申请日：2021-01-05
Applicant: BOE Technology Group Co., Ltd.
Inventor： Lujiang Huangfu , Tian Dong , Libin Liu , Xinshe Yin
IPC: G09G3/3233 , G09G3/3266 , G09G3/3291
Abstract: The present disclosure provides a pixel circuit, a pixel driving method and a display device. The pixel circuit includes a driving circuit, an energy storage circuit and a switch control circuit. A first end of the energy storage circuit is coupled to a control end of the driving circuit, a second end of the energy storage circuit is coupled to a first end of the driving circuit via the switch control circuit, and the energy storage circuit is configured to store a voltage. The switch control circuit is configured to control the second end of the energy storage circuit to be electrically coupled to a voltage application end or the first end of the driving circuit under the control of a light-emission control signal from a light-emission control line. The driving circuit is configured to generate a driving current in accordance with a voltage between the control end and first end of the driving circuit.
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公开(公告)号：US11328642B2
公开(公告)日：2022-05-10
申请号：US17044148
申请日：2020-03-18
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Guangliang Shang , Lijun Yuan , Haoliang Zheng , Libin Liu , Xing Yao , Seungwoo Han
IPC: G09G3/20
Abstract: The present disclosure provides a gate driving unit, a gate driving method, a gate driving circuitry and a display device. The gate driving unit includes a reverse-phase gate driving signal output end, a normal-phase gate driving signal output end, an input circuitry, an output control circuitry, an input node control circuitry and an output circuitry. The input circuitry is configured to control an input end to be electrically connected to an input node under the control of a first clock signal. The output control circuitry is configured to control a potential at an output node under the control of a potential at the input node and a second clock signal. The input node control circuitry is configured to control the potential at the input node in accordance with the potential at the output node under the control of the second clock signal. The output circuitry is configured to output a reverse-phase gate driving signal and output a normal-phase gate driving signal in accordance with the potential at the output node.
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公开(公告)号：US11308887B2
公开(公告)日：2022-04-19
申请号：US16766020
申请日：2019-07-01
IPC: G09G3/3266 , G09G3/3233 , G09G3/3291
Abstract: A display panel and a display device are disclosed, the display panel includes a plurality of display regions, a peripheral region surrounding the plurality of display regions, a plurality of light-emission control scan driving circuits provided in the peripheral region, a first start signal line, and a second start signal line. The first start signal line is different from the second start signal line, the plurality of display regions include a first display region and a second display region, the plurality of light-emission control scan driving circuits include a first light-emission control scan driving circuit and a second light-emission control scan driving circuit, the first start signal line is configured to provide a first start signal to the first light-emission control scan driving circuit, and the second start signal line is configured to provide a second start signal to the second light-emission control scan driving circuit.
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公开(公告)号：US11217632B2
公开(公告)日：2022-01-04
申请号：US16518020
申请日：2019-07-22
Applicant: BOE Technology Group Co., Ltd.
Inventor： Zhenzhen Li , Libin Liu , Hui Zhao
IPC: H01L27/32
Abstract: An display panel and a display device are provided, the display panel having a display region defined therein, the display region including: a regular display region; and an irregular display region located at corners of the regular display region, the irregular display region comprising a first region and a second region which is located at edges of the irregular display region and outside the first region; the first region is provided with a plurality of first pixels therein, and the second region is provided with a plurality of second pixels therein, each of the plurality of second pixels having an area smaller than that of each of the plurality of first pixels.
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Patent Agency Ranking
56.发明授权公开(公告)号：US11127342B2
公开(公告)日：2021-09-21
申请号：US16096102
申请日：2018-01-15
IPC: G09G3/3233 , G09G3/32 , G09G3/20
Abstract: The present disclosure provides a display device, a pixel circuit and its control method, the circuit including: a resetting and charging circuit, for resetting a capacitor connected between a gate electrode of the driving transistor of the pixel circuit and an anode of a LED, and then charging the capacitor; a writing circuit, for writing a data signal to the gate electrode of the driving transistor; a driving circuit including the driving transistor, for driving the LED to emit light when the driving transistor receives the data signal; wherein, the driving transistor for driving the LED to emit light is an oxide TFT, and the other transistors in the pixel circuit are low temperature polysilicon (LTPS) TFTs.
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公开(公告)号：US20210217348A1
公开(公告)日：2021-07-15
申请号：US16772851
申请日：2019-12-26
Applicant: BOE Technology Group Co., Ltd.
Inventor： Libin Liu
IPC: G09G3/20 , G09G3/3283
Abstract: A light-emitting control circuit and a driving method of a display device are disclosed. The display device includes a plurality of rows of sub-pixels; each row of sub-pixels includes at least first color sub-pixels and second color sub-pixels; each of the first and second color sub-pixels includes a pixel circuit and a light-emitting unit; the light-emitting control circuit includes a plurality of light-emitting control circuit groups which are in a one-to-one correspondence with the plurality of rows of sub-pixels; each of the plurality of light-emitting control circuit groups at least includes a first light-emitting control sub-circuit and a second light-emitting control sub-circuit; the first and second light-emitting control sub-circuit provide a first light-emitting control signal and a second light-emitting control signal, respectively; and each of the first and second light-emitting control signal is used for driving the pixel circuit to output a driving current to the light-emitting unit.
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公开(公告)号：US11037491B1
公开(公告)日：2021-06-15
申请号：US16830775
申请日：2020-03-26
Applicant: BOE Technology Group Co., Ltd.
Inventor： Jiangnan Lu , Libin Liu
IPC: G09G5/10 , G09G3/3225 , G09G3/3275
Abstract: The disclosure discloses a display panel and a display device. Each data writing circuit includes: a first sub-data writing transistor, a second sub-data writing transistor and a distributed capacitor; a gate of the first sub-data writing transistor and a gate of the second sub-data writing transistor are both electrically connected with a corresponding scanning signal line, a first end of the first sub-data writing transistor is electrically connected with a corresponding data line, a second end of the first sub-data writing transistor is electrically connected with a first end of the second sub-data writing transistor, a second end of the second sub-data writing transistor is electrically connected with a gate of the driving transistor, and a first electrode of the distributed capacitor is electrically connected with the second end of the first sub-data writing transistor, and a second electrode of the distributed capacitor is electrically connected with a fixed voltage signal end.
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公开(公告)号：US10971570B2
公开(公告)日：2021-04-06
申请号：US16622618
申请日：2019-05-15
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Libin Liu , Hao Zhang , Renrong Gai
IPC: H01L27/32 , G09G3/3225
Abstract: A display device includes a display layer, at least one brightness detecting unit group disposed on a light emitting side of the display layer, and a control module coupled to each of the brightness detecting units. The display layer includes a plurality of display units. Each display unit includes at least one sub-pixel. Each brightness detecting unit group includes a plurality of brightness detecting units, an orthographic projection of one brightness detecting unit on the display layer has an overlapping area with an arranging area of one display unit on the display layer. Respective portions, lying in overlapping areas, of the display units corresponding to different brightness detecting units in the same brightness detecting unit group are the same.
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公开(公告)号：US10923037B2
公开(公告)日：2021-02-16
申请号：US16398762
申请日：2019-04-30
Applicant: BOE Technology Group Co., Ltd.
Inventor： Jianchao Zhu , Libin Liu
IPC: G09G3/3266 , G11C19/28
Abstract: The embodiments of the present disclosure disclose a gate driving circuit. The gate driving circuit includes at least one stage of shift register unit to be compensated, wherein a driving terminal of each stage of shift register unit to be compensated is connected to a gate line of a corresponding row of pixels to be compensated, and at least one stage of parasitics compensation circuit, wherein each stage of parasitics compensation circuit is connected in series between a power supply line and a driving terminal of a corresponding shift register unit to be compensated. Each stage of parasitics compensation circuit is configured to compensate a driving terminal of a corresponding shift register unit to be compensated for parasitic capacitance and/or parasitic resistance, so that respective stages of shift register units to be compensated have the same driving load.
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