公开(公告)号：US11676537B2

公开(公告)日：2023-06-13

申请号：US17837996

申请日：2022-06-10

申请人： WUHAN TIANMA MICROELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

发明人： Mengmeng Zhang ,  Xingyao Zhou ,  Yue Li ,  Jian Kuang ,  Yuantao Wu

IPC分类号： G09G3/3233

CPC分类号： G09G3/3233 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0251 ,  G09G2310/08 ,  G09G2320/02

摘要： Provided is a pixel driving circuit, a display panel and a display apparatus. The pixel driving circuit includes: driving transistor having gate electrode connected to first node, first electrode connected to second node, and second electrode electrically connected to third node coupled to light emitting element; storage capacitor connected to the first node; and M first transistors having M first and second electrodes connected to the first node M functional signal terminals, respectively, M≥1. A driving cycle of the pixel driving circuit includes light-emitting stage and N non-light-emitting stages, N≥M. The M first transistors are respectively turned on in the N non-light-emitting stages, and the M first transistors are all turned off in the light-emitting stage. One of the N non-light-emitting stages includes first non-light-emitting stage adjacent to the light-emitting stage. Channel length L and width W of the first transistor satisfy:





W
×
L

公开(公告)号：US20220328003A1

公开(公告)日：2022-10-13

申请号：US17837996

申请日：2022-06-10

申请人： WUHAN TIANMA MICROELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

发明人： Mengmeng Zhang ,  Xingyao Zhou ,  Yue Li ,  Jian Kuang ,  Yuantao Wu

IPC分类号： G09G3/3233

摘要： Provided is a pixel driving circuit, a display panel and a display apparatus. The pixel driving circuit includes: driving transistor having gate electrode connected to first node, first electrode connected to second node, and second electrode electrically connected to third node coupled to light emitting element; storage capacitor connected to the first node; and M first transistors having M first and second electrodes connected to the first node M functional signal terminals, respectively, M≥1. A driving cycle of the pixel driving circuit includes light-emitting stage and N non-light-emitting stages, N≥M. The M first transistors are respectively turned on in the N non-light-emitting stages, and the M first transistors are all turned off in the light-emitting stage. One of the N non-light-emitting stages includes first non-light-emitting stage adjacent to the light-emitting stage. Channel length L and width W of the first transistor satisfy: W × L

公开(公告)号：US11620947B1

公开(公告)日：2023-04-04

申请号：US17690036

申请日：2022-03-09

申请人： Wuhan Tianma Microelectronics Co., Ltd. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

发明人： Yuantao Wu ,  Yue Li ,  Shuai Yang ,  Mengmeng Zhang

IPC分类号： G09G3/3233

摘要： The embodiments of present application discloses a display panel and a display apparatus. The display panel includes a pixel circuit including a driving transistor and a data writing module; a data signal line connected to the data writing module and used to provide a data signal to the pixel circuit; and a voltage control module connected to the data signal line; wherein a low-frequency data refresh cycle includes a number of data frames including a data writing frame and n holding frames; in the data writing frame, the data signal line writes the data signal into the driving transistor; in the holding frames, the data signal line does not write the data signal; in first m holding frames, the voltage control module controls the data signal line to be maintained at a first voltage value V1, V1

公开(公告)号：US11749169B2

公开(公告)日：2023-09-05

申请号：US17864260

申请日：2022-07-13

申请人： WUHAN TIANMA MICROELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

发明人： Mengmeng Zhang ,  Xingyao Zhou ,  Yue Li ,  Jian Kuang ,  Yuantao Wu ,  Jing Huang

IPC分类号： G09G3/20

CPC分类号： G09G3/2092 ,  G09G2310/0267 ,  G09G2320/0247

摘要： The present disclosure provides a display panel, a driving method, and a display apparatus. The display panel includes pixel circuits, the pixel circuits include: a drive transistor, with a gate electrically connected to a first node, a first electrode electrically connected to a second node; a voltage writing module, electrically connected to a first scanning signal line, a data line, and second node; a threshold compensation module, wherein a driving cycle of the pixel circuit includes a writing phase and a holding phase, writing phase includes a first non-light-emission period, and holding phase includes a second non-light-emission period; voltage writing module writes a display voltage into second node in first non-light-emission period in response to an enable level of first scanning signal, writes a node reset voltage into the second node in the second non-light-emission period in response to the enable level of the first scanning signal.

公开(公告)号：US11804183B2

公开(公告)日：2023-10-31

申请号：US17587766

申请日：2022-01-28

申请人： Wuhan Tianma Micro-Electronics Co., Ltd. ,  Wuhan Tianma MicroElectronics Co., Ltd. Shanghai Branch

发明人： Mengmeng Zhang ,  Yue Li ,  Yuantao Wu ,  Jing Huang

IPC分类号： G09G3/3266 ,  G11C19/28 ,  G09G3/36 ,  G09G3/20

CPC分类号： G09G3/3266 ,  G11C19/28 ,  G09G3/20 ,  G09G3/3677 ,  G09G2310/0267 ,  G09G2310/0283 ,  G09G2310/0286 ,  G11C19/287

摘要： A display panel, a driving method of a display panel, and a display device are provided. The display panel includes pixel circuits and a gate driving circuit including cascaded first shift register units. A trigger signal input terminal of the first stage first shift register unit is connected to a trigger signal terminal through a first switch element. A signal output terminal of the i-th stage first shift register unit is connected to a trigger signal input terminal of the (i+1)-th stage first shift register unit through a second switch element. A trigger signal input terminal of the N-th stage first shift register unit is connected to the trigger signal terminal through a third switch element. A signal output terminal of the j-th stage first shift register unit is connected to a trigger signal input terminal of the (j−1)-th stage first shift register unit through a fourth switch element.

公开(公告)号：US12029062B2

公开(公告)日：2024-07-02

申请号：US17698646

申请日：2022-03-18

申请人： Wuhan Tianma Micro-Electronics Co., Ltd. ,  Wuhan Tianma MicroElectronics Co., Ltd. Shanghai Branch

发明人： Huiping Chai ,  Baoyan Chai ,  Lijing Han ,  Yuantao Wu

IPC分类号： G06F3/041 ,  H10K50/842 ,  H10K50/86

CPC分类号： H10K50/8428 ,  G06F3/041 ,  H10K50/86

摘要： A display panel and a display device are provided. The display panel includes a display area and a non-display area surrounding the display area; a first substrate and a second substrate disposed opposite to the first substrate; a plurality of supporting pillars disposed between the first substrate and the second substrate and located in the display area; and an adhesive layer disposed between the first substrate and the second substrate and located in the non-display area. The second substrate includes a plurality of film layers, the plurality of film layers include a polarizer and at least one first layer, and a thickness of a portion of the at least one first layer located in the display area is greater than a thickness of a portion of the at least one first layer located in the non-display area.