公开(公告)号：US11925076B2

公开(公告)日：2024-03-05

申请号：US17138643

申请日：2020-12-30

申请人： WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH

发明人： Zhe Zhao ,  Shuai Yang ,  Yue Li ,  Xingyao Zhou ,  Mengmeng Zhang

IPC分类号： H10K59/131 ,  H10K77/10

CPC分类号： H10K59/131 ,  H10K77/10

摘要： Provided are a display panel and a display device. The display panel includes a base substrate as well as, at a side of the base substrate, a plurality of sub-pixels arranged in an array, a power bus, a plurality of first power lines extending along a column direction and a plurality of second power lines extending along a row direction, where each of the plurality of first power lines is electrically connected to the plurality of the sub-pixels arranged along the column direction, and the plurality of first power lines and the plurality of second power lines are electrically connected in overlapping regions of vertical projection on the base substrate. The display panel further includes a plurality of connection units.

公开(公告)号：US20240221644A1

公开(公告)日：2024-07-04

申请号：US18195621

申请日：2023-05-10

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

发明人： Yue LI ,  Peng Zhang ,  Mengmeng Zhang ,  Xueqi Tian ,  Shuai Yang ,  Yana Gao ,  Gaojun Huang

IPC分类号： G09G3/3233

CPC分类号： G09G3/3233 ,  G09G2300/0842 ,  G09G2310/061 ,  G09G2320/0247

摘要： A driving method of a display panel and a display panel are provided. Time for displaying one frame includes N times of first node potential adjustment stages, a data writing stage, and at least one first bias stress stage; the data writing stage is after the first node potential adjustment stage and before the first bias stress stage; the N times first node potential adjustment stage include N reset stages and N first adjustment voltage writing stages; and an i-th first voltage writing stage is after an i-th reset stage. In the reset stage, the first reset module is turned on to write a reset signal to the first node; in the first adjustment voltage writing phase, the first reset module is turned off, and the compensation module is turned on to write a first adjustment voltage into the first node to adjust the bias state of the driving transistor.

公开(公告)号：US11620950B2

公开(公告)日：2023-04-04

申请号：US17405643

申请日：2021-08-18

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

发明人： Shuai Yang ,  Xingyao Zhou ,  Yue Li ,  Mengmeng Zhang

IPC分类号： G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3291

摘要： A pixel driving circuit, a driving method, a display panel and a display device are provided. The pixel driving circuit include a driving module, configured to drive a light-emitting element to emit light, wherein a control terminal of the driving module is electrically connected to a first node, and a first terminal is electrically connected to a second node; a data writing module, configured to write data signals, wherein a control terminal of the data writing module is electrically connected with a first scan signal line, and a first terminal is electrically connected with a data signal terminal; and a coupling module, configured to couple the data signals to the first terminal of the driving module, wherein a first terminal of the coupling module is electrically connected to a second terminal of the data writing module, and a second terminal is electrically connected to the second node.

公开(公告)号：US11385740B2

公开(公告)日：2022-07-12

申请号：US17213000

申请日：2021-03-25

申请人： WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH

发明人： Lin Cheng ,  Yingying Wu ,  Shuai Yang ,  Xingyao Zhou

IPC分类号： G09G3/3266 ,  G09G3/3275 ,  G06F3/041

摘要： An organic light-emitting display panel and a method for driving the same, and a display device are provided. The organic light-emitting display panel includes a light-emitting driving circuit and a touch signal driving circuit. The light-emitting driving circuit is configured to provide, within a scanning duration of each frame, a light-emitting control signal having b1 light-emitting cycles and a duty cycle of a1 to each row of pixels. A display area scanning duration includes at least one touch duration during which the touch signal driving circuit provides a touch signal to the display panel and the number of rows of the light-emitting pixel-rows of the display panel remains unchanged.

公开(公告)号：US12033578B1

公开(公告)日：2024-07-09

申请号：US18195621

申请日：2023-05-10

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

发明人： Yue Li ,  Peng Zhang ,  Mengmeng Zhang ,  Xueqi Tian ,  Shuai Yang ,  Yana Gao ,  Gaojun Huang

IPC分类号： G09G3/3233

CPC分类号： G09G3/3233 ,  G09G2300/0842 ,  G09G2310/061 ,  G09G2320/0247

摘要： A driving method of a display panel and a display panel are provided. Time for displaying one frame includes N times of first node potential adjustment stages, a data writing stage, and at least one first bias stress stage; the data writing stage is after the first node potential adjustment stage and before the first bias stress stage; the N times first node potential adjustment stage include N reset stages and N first adjustment voltage writing stages; and an i-th first voltage writing stage is after an i-th reset stage. In the reset stage, the first reset module is turned on to write a reset signal to the first node; in the first adjustment voltage writing phase, the first reset module is turned off, and the compensation module is turned on to write a first adjustment voltage into the first node to adjust the bias state of the driving transistor.

公开(公告)号：US11741892B2

公开(公告)日：2023-08-29

申请号：US17454856

申请日：2021-11-15

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

发明人： Shuai Yang ,  Yue Li ,  Mengmeng Zhang ,  Gaojun Huang

IPC分类号： G09G3/3208

CPC分类号： G09G3/3208 ,  G09G2300/0842 ,  G09G2310/0297 ,  G09G2310/061 ,  G09G2320/0214

摘要： Pixel circuit, display panel and display device are provided. The pixel circuit includes a driving module, a data writing module, a first reset module, a threshold compensation module, light emitting control modules, a leakage suppression module, a storage capacitor, a first capacitor, and a light emitting module. A first terminal of the first reset module is electrically connected to a reference signal terminal. A first terminal of the threshold compensation module is electrically connected to a second terminal of the driving module. A control terminal of the driving module is electrically connected to a first node. A second terminal of the first reset module and a second terminal of the threshold compensation module are both electrically connected to the first node through the leakage suppression module. A connection node between the leakage suppression module and the second terminal of the first reset module is a second node.

公开(公告)号：US11417259B2

公开(公告)日：2022-08-16

申请号：US17229876

申请日：2021-04-14

申请人： WUHAN TIANMA MICRO-ELECTRONICS CO., LTD ,  WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH

发明人： Shuai Yang ,  Xingyao Zhou ,  Yue Li ,  Mengmeng Zhang

IPC分类号： G09G3/20 ,  G09G3/3233

摘要： Disclosed are a driving method of a display device and a driving device is described. The driving method of a display panel includes that in response to determining that the display device enters a low power consumption state, controlling a light intensity detection component to detect in real time whether the display device is in a strong light environment; in a case where the display device is in the strong light environment, controlling a driver chip to adjust a picture refresh frequency to a first frequency; in a case where the display device is not in the strong light environment, determining a current gray scale of the display device according to a latest user setting instruction, determining an optimal refresh frequency according to the current gray scale and a corresponding relationship between a preset gray scale and the optimal refresh frequency.

公开(公告)号：US11605351B2

公开(公告)日：2023-03-14

申请号：US17405111

申请日：2021-08-18

申请人： WUHAN TIANMA MICROELECTRONICS CO., LTD. ,  WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH

发明人： Yana Gao ,  Xingyao Zhou ,  Mengmeng Zhang ,  Shuai Yang

IPC分类号： G09G3/3266 ,  G09G3/3258 ,  G09G3/3291

摘要： Disclosed are a display panel and a display device. The display panel includes a display area and a non-display area surrounding the display area. The display area includes scan lines arranged in a second direction and each extending in a first direction, data lines arranged in the first direction and each extending in the second direction, and pixel driver circuits defined by the scan lines and the data lines intersecting each other, the first direction intersecting the second direction. The non-display area includes a step area and a compensation unit, and the compensation unit is located between the step area and a last row of pixel driver circuits. The compensation unit is connected to a corresponding data line and configured to transmit a leakage current compensation signal to the data line.

公开(公告)号：US11475840B2

公开(公告)日：2022-10-18

申请号：US16910078

申请日：2020-06-24

申请人： SHANGHAI TIANMA AM-OLED CO., LTD. ,  WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH

发明人： Shuai Yang ,  Yue Li ,  Zhi Liu ,  Xingyao Zhou

IPC分类号： G09G3/3258 ,  H01L27/32 ,  H01L27/12 ,  H01L29/786

摘要： An organic light-emitting display panel and a display device are provided. The organic light-emitting display panel includes a control circuit. The control circuit includes a plurality of transistors. The plurality of transistors includes at least one first-type transistor, and each of the at least one first-type transistor has a channel width and a channel length, one of which is greater than five times the other one. Each of the at least one first-type transistor is a single-gate transistor.

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