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公开(公告)号：US11984084B2
公开(公告)日：2024-05-14
申请号：US17414600
申请日：2020-12-29
Applicant: BOE Technology Group Co., Ltd.
IPC: G09G3/3266 , G09G3/36 , G11C19/28
CPC classification number: G09G3/3266 , G09G3/3677 , G11C19/28 , G09G2300/0408 , G09G2310/0286 , G09G2320/0247 , G09G2320/064
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.
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公开(公告)号：US20240144870A1
公开(公告)日：2024-05-02
申请号：US18279621
申请日：2022-07-12
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
IPC: G09G3/3225
CPC classification number: G09G3/3225 , G09G2300/0819 , G09G2300/0842 , G09G2300/0861 , G09G2310/08 , G09G2320/0247 , G09G2330/021
Abstract: Provided are a pixel circuit, a driving method, and a display device. The pixel circuit includes a light-emitting element, drive circuit, control circuit, first initialization circuit, first light-emitting control circuit and second light-emitting control circuit, wherein the control circuit causes a control terminal of the drive circuit to be electrically connected to a connection node under the control of a first scanning signal; the first initialization circuit writes a first initial voltage to the connection node under the control of a reset control signal; the first light-emitting control circuit causes a first voltage terminal to be conductively connected to a first terminal of the drive circuit under the control of a first light-emitting control signal; the second light-emitting control circuit causes a second terminal of the drive circuit to be conductively connected to a first electrode of the light-emitting element under control of a second light-emitting control signal.
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公开(公告)号：US11950468B2
公开(公告)日：2024-04-02
申请号：US17762975
申请日：2021-04-15
Applicant: BOE Technology Group Co., Ltd.
Inventor： Yipeng Chen , Lujiang Huangfu , Libin Liu
IPC: H10K59/131 , G09G3/3225 , H10K59/121 , H10K71/00 , H10K59/12 , H10K59/35
CPC classification number: H10K59/131 , G09G3/3225 , H10K59/1213 , H10K59/1216 , H10K71/00 , G09G2300/0426 , G09G2300/0465 , G09G2300/0842 , H10K59/1201 , H10K59/351
Abstract: The present disclosure provides a display panel, a method of manufacturing the same, and a display device. The initialization signal line layer in the display panel includes an initialization signal line pattern arranged in each of the plurality of sub-pixel areas; the first auxiliary signal line layer includes a plurality of first auxiliary signal line patterns corresponding to the plurality of sub-pixel areas in a one-to-one manner, and the first auxiliary signal line pattern is coupled to an initialization signal line pattern in a corresponding sub-pixel area, at least part of the first auxiliary signal line pattern extends along the first direction, and first auxiliary signal line patterns corresponding to sub-pixel areas in a same row of sub-pixel areas are sequentially coupled.
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公开(公告)号：US20240087514A1
公开(公告)日：2024-03-14
申请号：US18273695
申请日：2022-07-11
Applicant: BOE Technology Group Co., Ltd.
IPC: G09G3/3225
CPC classification number: G09G3/3225 , G09G2300/0426 , G09G2300/0852 , G09G2310/061
Abstract: A pixel circuit and a driving method therefor, an array substrate and a display device are provided. The pixel circuit includes a driving circuit, a data writing circuit, a first initialization circuit. The driving circuit is configured to control a driving current; the data writing circuit is configured to write a data signal into the control terminal of the driving circuit; the first initialization circuit is configured to apply a first initialization voltage to the control terminal of the driving circuit, and includes a first transistor; the data writing circuit includes a second transistor and the driving circuit includes a third transistor; semiconductor materials of active layers of both the first transistor and the second transistor have a smaller leakage current characteristic than a semiconductor material of a third active layer of the third transistor.
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公开(公告)号：US11908404B2
公开(公告)日：2024-02-20
申请号：US17599387
申请日：2021-01-14
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Lujiang Huangfu , Libin Liu , Can Zheng
IPC: G09G3/3233
CPC classification number: G09G3/3233 , G09G2300/0842 , G09G2310/061 , G09G2310/08 , G09G2330/02
Abstract: The present disclosure provides a display panel, a pixel circuit and a method for driving the pixel circuit, the pixel circuit includes: a storage capacitor circuit; a light-emitting element; a driving transistor; a reset circuit, the reset circuit is configured to receive a reset control signal and reset a first node and a second node according to the reset control signal, or receive a writing control signal and/or a timing sequence control signal of an adjacent pixel row and reset the first node and the second node according to the writing control signal and/or the timing sequence control signal of the adjacent pixel row; a threshold compensation circuit, configured to receive a compensation control signal and write a compensation voltage into the first node according to the compensation control signal; a writing circuit; and a light-emitting control circuit.
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Patent Agency Ranking
公开(公告)号：US11903279B2
公开(公告)日：2024-02-13
申请号：US17844305
申请日：2022-06-20
Applicant: BOE Technology Group Co., Ltd.
IPC: H01L29/08 , H10K59/131 , H10K59/121
CPC classification number: H10K59/131 , H10K59/1213 , H10K59/1216 , H10K59/1315
Abstract: There is provided a display substrate, in which, a first reference voltage line and a first reference voltage auxiliary line, which extend in different directions, are respectively disposed in one of a second wiring layer, a third wiring layer and a fourth wiring layer, a second reference voltage line extends in the same direction as the first reference voltage auxiliary line, the first reference voltage auxiliary line is electrically coupled to the first reference voltage line through via holes in an insulating layer therebetween, via a coupling line extending in the same direction as the first reference voltage line, the first reference voltage auxiliary line and the first reference voltage line provide a reset voltage to a first electrode of a first capacitor, and the second reference voltage line provides a reset voltage to a pixel electrode in a pixel electrode layer. A display device is further provided.
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87.发明授权公开(公告)号：US11790850B2
公开(公告)日：2023-10-17
申请号：US17791965
申请日：2021-05-17
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Lujiang Huangfu , Li Wang , Can Zheng , Libin Liu
IPC: G09G3/3258
CPC classification number: G09G3/3258 , G09G2300/0819 , G09G2300/0842 , G09G2310/0286 , G09G2310/061 , G09G2310/08 , G09G2320/0233 , G09G2320/0247
Abstract: A pixel driving circuit includes a reset sub-circuit, a compensation sub-circuit, a light-emitting control sub-circuit and a driving sub-circuit. The reset sub-circuit is configured to transmit an initialization signal received from an initialization signal terminal to the light-emitting control sub-circuit. The light-emitting control sub-circuit is configured to transmit the initialization signal to the first node. The compensation sub-circuit is configured to transmit the initialization signal from the first node to a second node so as to reset a voltage of the second node. The driving sub-circuit is configured to open a conductive path from a first voltage signal terminal to the initialization signal terminal during a process of resetting the voltage of the second node.
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公开(公告)号：US11735606B2
公开(公告)日：2023-08-22
申请号：US16834492
申请日：2020-03-30
Applicant: BOE Technology Group Co., Ltd.
IPC: H01L27/146 , G06F1/16
CPC classification number: H01L27/14605 , G06F1/1605 , H01L27/14649
Abstract: Disclosed are a display panel and a display device. The display panel includes a base substrate, and a first display region and a second display region that are located on the base substrate, where the first display region includes a plurality of first sub-pixels and a plurality of transparent regions, the second display region includes a plurality of second sub-pixels, and a distribution density of the first sub-pixels is smaller that of the second sub-pixels; and an area occupied by the first sub-pixels is smaller than that occupied by the second sub-pixels.
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89.发明授权公开(公告)号：US11721285B2
公开(公告)日：2023-08-08
申请号：US17319243
申请日：2021-05-13
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Libin Liu , Yu Feng , Ming Che Hsieh
IPC: G09G3/3258 , G09G3/3291
CPC classification number: G09G3/3258 , G09G3/3291 , G09G2300/0465 , G09G2300/0847
Abstract: A display screen, a display device, a display circuit used for the display screen and a brightness compensation method therefor. The display screen (10) includes a normal display area (11) and a transparent display area (12). The display circuit (20) includes: a first pixel circuit (21), wherein the first pixel circuit is arranged at the normal display area; and a second pixel circuit (22), wherein the second pixel circuit is arranged at the transparent display area. The structure of the first pixel circuit is different from that of the second pixel circuit, so that the light transmittance of the transparent display area is higher than the light transmittance of the normal display area.
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公开(公告)号：US11462591B2
公开(公告)日：2022-10-04
申请号：US16622045
申请日：2018-12-28
Applicant: BOE TECHNOLOGY GROUP CO., LTD.
Inventor： Libin Liu , Qian Yang , Hongli Wang , Lujiang Huangfu
Abstract: A display substrate and a display device. The display substrate comprises a first sub-pixel (111), a second sub-pixel (112), and a first spacer (0101). A line connecting the center (C1) of the first sub-pixel (111) and the center (C2) of the second sub-pixel (112) is a center line (CL1); the center line (CL1) is not perpendicular to a first direction (X); the first direction (X) is at least one of the row direction or the column direction. The first spacer (0101) is disposed between the first sub-pixel (111) and the second sub-pixel (112), and the extension direction (E01) of first spacer (0101) between the first sub-pixel (111) and the second sub-pixel (112) is not perpendicular to the first direction (X). Therefore, the display substrate can improve the different viewing angle color cast and improve the display quality.
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