公开(公告)号：US20230360607A1

公开(公告)日：2023-11-09

申请号：US17414600

申请日：2020-12-29

Applicant: BOE Technology Group Co., Ltd.

Inventor： Can ZHENG ,  Libin LIU

IPC: G09G3/3266 ,  G11C19/28

CPC classification number: G09G3/3266 ,  G11C19/28 ,  G09G2320/064 ,  G09G2320/0247 ,  G09G2300/0408 ,  G09G2310/0286

Abstract: The disclosure relates to a shift register, a driving method thereof, a gate drive circuit, and a display device. An output pulse width can be reduced by 1/(n+1) to (n−1)/(n+1) clock cycle by setting a pulse width modulation module (104), where n is the number of clock signal terminals in one-to-one correspondence with the enable signal terminals, and the pulse width reduced by 1/(n+1) to (n−1)/(n+1) clock cycle needs to be output several times under the condition that the light emitting duration of pixels is unchanged. In this way, the refresh rate is increased, and thus the flicker phenomenon in the process of low gray-scale brightness adjustment is less detectable to the human eyes.

公开(公告)号：US20230200129A1

公开(公告)日：2023-06-22

申请号：US17764993

申请日：2021-05-28

Applicant: BOE Technology Group Co., Ltd.

Inventor： Can ZHENG ,  Li WANG ,  Long HAN ,  Jianchao ZHU ,  Libin LIU

IPC: H10K59/121 ,  H10K59/131 ,  H10K59/12 ,  H10K71/00 ,  H10K59/35

CPC classification number: H10K59/1213 ,  H10K59/1216 ,  H10K59/131 ,  H10K59/1201 ,  H10K71/00 ,  H10K59/353

Abstract: Disclosed are a display substrate and a preparation method thereof, and a display apparatus. The display substrate includes a substrate and a plurality of sub-pixels, at least one sub-pixel includes a pixel drive circuit and a light emitting device connected to the pixel drive circuit, the pixel drive circuit includes a plurality of transistors, wherein at least one transistor includes an active layer and two gate electrodes. The substrate is provided with a semiconductor layer and a plurality of conductive layers disposed on one side of the semiconductor layer away from the substrate, at least one conductive layer is provided with at least one electrode plate, and there is an overlapping region between an orthographic projection of the electrode plate on the substrate and an orthographic projection of the active layer between the two gate electrodes on the substrate.

公开(公告)号：US20230186850A1

公开(公告)日：2023-06-15

申请号：US17912090

申请日：2021-02-09

Applicant: BOE Technology Group Co., Ltd.

Inventor： Li WANG ,  Can ZHENG

IPC: G09G3/3233 ,  H10K59/131

CPC classification number: G09G3/3233 ,  H10K59/131 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/0202 ,  G09G2320/0247 ,  G09G2360/16

Abstract: Provided are a pixel circuit, a display panel and a display apparatus. The pixel circuit includes: a first resetting switching transistor, a first data writing switching transistor, a storage capacitor, a first compensation capacitor, a second compensation capacitor, and a driving transistor; the first resetting switching transistor includes a first switching sub-transistor and a second switching sub-transistor connected in series, and the first data writing switching transistor includes a third switching sub-transistor and a fourth switching sub-transistor connected in series. The first compensation capacitor and the second compensation capacitor are used to enable a voltage Vn1′ of the first node to be smaller than a voltage Vn3′ of the third node and larger than a voltage Vn4′ of the fourth node in a light-emitting stage.

公开(公告)号：US20230052846A1

公开(公告)日：2023-02-16

申请号：US17785662

申请日：2021-08-11

Applicant: BOE Technology Group Co., Ltd.

Inventor： Can ZHENG ,  Lujiang HUANGFU ,  Libin LIU ,  Shiming SHI

IPC: G09G3/3233 ,  G09G3/3291 ,  G09G3/3266

Abstract: The present disclosure provides a pixel circuit, a pixel driving method, a display panel and a display device. The pixel circuit includes a light-emitting element, a driving circuitry, a first energy storage circuitry, a second energy storage circuitry, a data writing circuitry and a compensation circuitry. The data writing circuitry is configured to write a data voltage into a first end of the first energy storage circuitry under the control of a gate driving signal provided by a gate line. The compensation circuitry is configured to control a control end of the driving circuitry to be electrically coupled to a second end of the driving circuitry under the control of a compensation control signal. The driving circuitry is configured to generate a driving current for driving the light-emitting element under the control of a potential at its control end.

公开(公告)号：US20230021618A1

公开(公告)日：2023-01-26

申请号：US17953941

申请日：2022-09-27

Applicant: BOE Technology Group Co., Ltd.

Inventor： Jiangnan LU ,  Guangliang SHANG ,  Can ZHENG ,  Yu FENG ,  Libin LIU ,  Jie ZHANG ,  Mei LI

IPC: H01L27/32

Abstract: Provided is a display substrate, the display substrate is provided with a display area and a peripheral area around the display area, and includes: a source/drain layer, a planarization layer and an anode layer which are laminated in sequence, wherein in the peripheral area, the source/drain layer includes at least one pair of first signal lines including a signal line of a gate circuit and the anode layer includes a common power line provided with vent holes; and overlapping areas between two first signal lines in any pair of the first signal lines and a projection pattern of the vent hole are equal, the projection pattern of the vent hole being a pattern of an orthographic projection of the vent hole in the common power line onto the source/drain layer. A display panel and a display device are also provided.

公开(公告)号：US20220208071A1

公开(公告)日：2022-06-30

申请号：US17696251

申请日：2022-03-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can ZHENG

IPC: G09G3/20

Abstract: A shift register unit, a driving circuit, a display device, and a driving method are disclosed. The shift register unit includes a first input circuit, a second input circuit, an output circuit, a first control circuit, and a second control circuit. The first input circuit is electrically connected to a first node, and is configured to transmit an input signal to the first node; the second input circuit is electrically connected to the first node and a second node, and is configured to control a level of the second node; the first control circuit is electrically connected to the second node and a third node, and is configured to control a level of the third node; and the output circuit is electrically connected to the third node and an output terminal, and is configured to output an output signal to the output terminal.

公开(公告)号：US20220149138A1

公开(公告)日：2022-05-12

申请号：US17427076

申请日：2020-11-13

Applicant: BOE Technology Group Co., Ltd.

Inventor： Jiangnan LU ,  Guangliang SHANG ,  Can ZHENG ,  Yu FENG ,  Libin LIU ,  Jie ZHANG ,  Mei LI

IPC: H01L27/32

Abstract: An organic light-emitting diode display substrate, a display panel and a display device. The display substrate includes a source/drain layer (101), a planarization layer (102) and an anode layer (103) which are laminated in sequence; the source/drain layer (101) comprises at least one pair of first signal lines (110); the anode layer (103) comprises a common power line (130), and the common power line (130) is provided with an air discharge hole (131); and the overlapping areas of a projection pattern of the air discharge hole (131) and two first signal lines (110) in any pair of first signal lines (110) are equal, the overlapping areas are greater than 0, and the projection pattern of the air discharge hole (131) is a pattern of an orthographic projection, on the source/drain layer (101), of the air discharge hole (131) on the common power line (130). The overlapping areas of the common power line (130) and the two first signal lines (110) in the pair of first signal lines (110) are equal, so that the parasitic capacitances between the common power line (130) and the two first signal lines (110) in the pair of first signal lines (110) are the same in magnitude, and so that signals transmitted by the pair of first signal lines (110) match each other, ensuring the uniformity of a display screen.

公开(公告)号：US20210174846A1

公开(公告)日：2021-06-10

申请号：US17179699

申请日：2021-02-19

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can ZHENG

IPC: G11C7/10 ,  G11C7/20 ,  G11C7/22 ,  G09G3/20 ,  G11C11/4074 ,  G11C7/12

Abstract: Shift register includes input sub-circuit coupling input terminal to first node responsive to signal of first clock terminal in input stage, control sub-circuit transmitting signal of second clock terminal to intermediate output terminal according to level at first node and controlling potential of third node according to potential of intermediate output terminal and signal of third clock terminal in input, output and reset stages, pull-up sub-circuit coupling second level terminal to final output terminal responsive to potential of intermediate output terminal in output stage, first voltage stabilization sub-circuit stabilizing voltage between final output terminal and third node responsive to signal of next-stage node connection terminal, pull-down transistor having gate electrode coupled to third node, first electrode coupled to first level terminal, and second electrode coupled to final output terminal. First voltage stabilization sub-circuit lowers potential of third node to level lower than signal of first level terminal in reset stage.

公开(公告)号：US20210150970A1

公开(公告)日：2021-05-20

申请号：US16642140

申请日：2019-03-22

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can ZHENG

IPC: G09G3/20

Abstract: A shift register unit, a driving circuit, a display device, and a driving method are disclosed. The shift register unit includes a first input circuit, a second input circuit, an output circuit, a first control circuit, and a second control circuit. The first input circuit is electrically connected to a first node, and is configured to transmit an input signal to the first node; the second input circuit is electrically connected to the first node and a second node, and is configured to control a level of the second node; the first control circuit is electrically connected to the second node and a third node, and is configured to control a level of the third node; and the output circuit is electrically connected to the third node and an output terminal, and is configured to output an output signal to the output terminal.

公开(公告)号：US20240363051A1

公开(公告)日：2024-10-31

申请号：US18767335

申请日：2024-07-09

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Can ZHENG

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2310/0286

Abstract: A shift register unit, a driving circuit and a display device are disclosed. The shift register unit includes a first input circuit, a second input circuit, an output circuit, a first control circuit, and a second control circuit, wherein the first input circuit is electrically connected to a first node; the second input circuit is electrically connected to the first node and a second node; the first control circuit is electrically connected to the second node and a third node; the output circuit is electrically connected to the third node, a second voltage signal line and an output terminal; and the second control circuit is electrically connected to the first node, the third node and a first voltage signal line.