公开(公告)号：US20230230539A1

公开(公告)日：2023-07-20

申请号：US18187707

申请日：2023-03-22

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang LI ,  Ping AN

IPC: G09G3/3233 ,  H01L27/12

CPC classification number: G09G3/3233 ,  H01L27/124 ,  G09G2300/0819 ,  G09G2320/045 ,  G09G2310/08

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data write device, a drive device and a bias adjustment device. The pixel circuit further includes a reset device or an initialization device. The display panel further includes a bias adjustment signal line, the bias adjustment signal line is connected to the bias adjustment device and configured to provide a bias adjustment signal; and at least one of a reset signal line or an initialization signal line, the reset signal line is connected to the reset device and configured to provide a reset signal, or the initialization signal line is connected to the initialization device and configured to provide an initialization signal. At least one side frame of the display panel includes a bias adjustment signal bus, at least one of a reset signal bus or an initialization signal bus.

公开(公告)号：US20230222968A1

公开(公告)日：2023-07-13

申请号：US18187716

申请日：2023-03-22

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang LI ,  Ping AN

IPC: G09G3/3233 ,  G09G3/32 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/32 ,  G09G3/3291 ,  G09G2310/08 ,  G09G2310/061 ,  G09G2320/0233

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data write device, a drive device and a bias adjustment device. The data write device is configured to provide a data signal to the drive device. The bias adjustment device is configured to provide a bias adjustment signal to the drive device. The display panel further includes a drive circuit, the drive circuit is configured to receive a first drive signal and a second drive signal. In a case where the drive device includes a drive transistor being a PMOS transistor, the bias adjustment signal is same as the first drive signal, or, in a case where the drive device includes a drive transistor being an NMOS transistor, and the bias adjustment signal is same as the second drive signal.

公开(公告)号：US20230222966A1

公开(公告)日：2023-07-13

申请号：US18187711

申请日：2023-03-22

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang LI ,  Ping AN

IPC: G09G3/3233 ,  G09G3/32

CPC classification number: G09G3/3233 ,  G09G3/32 ,  G09G2310/061 ,  G09G2310/0216 ,  G09G2320/0233

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data write device, a drive device and a bias adjustment device. The display panel further includes a bias adjustment signal line, a reset signal line or an initialization signal line. At least one side frame of the display panel includes a bias adjustment signal bus, a reset signal bus or an initialization signal bus. The bias adjustment signal bus is disposed in a first side frame of the display panel, the reset signal bus or the initialization signal bus is disposed in a second side frame of the display panel; and the first side frame is adjacent to the second side frame, or is opposite to the second side frame, or, the bias adjustment signal bus is disposed in a same side frame with the reset signal bus or the initialization signal bus.

公开(公告)号：US20230145533A1

公开(公告)日：2023-05-11

申请号：US18151073

申请日：2023-01-06

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang LI ,  Jiaxian LIU

IPC: H01L27/12 ,  G09G3/3275 ,  G09G3/3225 ,  G09G3/3266

CPC classification number: H10K59/1216 ,  H10K59/1213 ,  G09G3/3275 ,  G09G3/3225 ,  G09G3/3266 ,  H01L27/1255 ,  H01L27/1225 ,  G09G2320/0626

Abstract: Provided are a display panel and a display apparatus. The display panel includes a driving array layer having functional layers and insulation layers. The driving array layer includes a first transistor, a second transistor, a first capacitor including a first plate and a second plate, and a second capacitor including a third plate and a fourth plate. An active layer of the first transistor contains silicon, and an active layer of the second transistor contains oxide semiconductor. The first plate and the second plate are located in two of the functional layers, respectively, and the third plate and the fourth plate are located in two of the functional layers, respectively.

公开(公告)号：US20230091203A1

公开(公告)日：2023-03-23

申请号：US18071347

申请日：2022-11-29

Applicant: Xiamen Tianma Micro-Electronics Co.,Ltd.

Inventor： Jieliang LI ,  Jiaxian LIU

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3233

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data-writing module, a driving module, and a compensation module. The driving module is configured to provide a driving current for the light-emitting element, wherein the driving module includes a driving transistor, and the driving transistor is an NMOS transistor. The data-writing module is configured to selectively provide a data signal for the driving module. The compensation module is configured to compensate a threshold voltage of the driving transistor. An operational process of the pixel circuit includes a bias stage. In the bias stage, the compensation module is turned off, the driving transistor receives a bias signal, and the bias signal is configured to adjust a bias state of the driving transistor.

公开(公告)号：US20230086559A1

公开(公告)日：2023-03-23

申请号：US17991375

申请日：2022-11-21

Applicant: Xiamen Tianma Micro-Electronics Co.,Ltd.

Inventor： Yong YUAN ,  Jieliang LI

IPC: G09G3/32

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a driving module, a data-writing module, and a compensation module, and a reset module. The driving module includes a driving transistor. The data-writing module is connected to a source of the driving transistor and configured to selectively provide a data signal for the driving transistor. The compensation module is connected between a gate and a drain of the driving transistor. The reset module is connected between the drain of the driving transistor and a reset signal terminal and configured to provide a reset signal for the gate of the driving transistor. The reset module is used as a bias module. An operating process of the pixel circuit includes a reset stage and a bias stage.

公开(公告)号：US20220130322A1

公开(公告)日：2022-04-28

申请号：US17409339

申请日：2021-08-23

Applicant: Xiamen Tianma Micro-Electronics Co.,Ltd.

Inventor： Yong YUAN ,  Jieliang LI

IPC: G09G3/32

Abstract: A display panel and a display device are provided. The display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a driving module, a data-writing module, and a light-emitting controller. The driving module is configured to provide a driving current for the light-emitting element, and the driving module includes a driving transistor. The data-writing module is configured to selectively provide a data signal for the driving transistor. The light-emitting controller is configured to selectively allow the light-emitting element to enter a light-emitting stage. One end of the light-emitting controller is connected to a first power signal terminal for receiving a first power signal. The pixel circuit further includes a latch module and a first scanning signal line. The first scanning signal line is configured to receive a first scanning signal. The latch module is connected between a gate of the driving transistor and the first scanning signal line.

公开(公告)号：US20230089780A1

公开(公告)日：2023-03-23

申请号：US18071449

申请日：2022-11-29

Applicant: Xiamen Tianma Micro-Electronics Co.,Ltd.

Inventor： Jieliang LI ,  Jiaxian LIU

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3233

Abstract: A display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data-writing module, a driving module, and a compensation module. The driving module is configured to provide a driving current for the light-emitting element, wherein the driving module includes a driving transistor, and the driving transistor is an NMOS transistor. The data-writing module is configured to selectively provide a data signal for the driving module. The compensation module is configured to compensate a threshold voltage of the driving transistor. An operational process of the pixel circuit includes a bias stage. In the bias stage, the compensation module is turned off, the driving transistor receives a bias signal, and the bias signal is configured to adjust a bias state of the driving transistor.

公开(公告)号：US20220358883A1

公开(公告)日：2022-11-10

申请号：US17873466

申请日：2022-07-26

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang LI ,  Gaojun HUANG

IPC: G09G3/3233

Abstract: Provided is a display panel. The display panel includes a pixel driving circuit which including a drive transistor, a data write module, a light emission control module, a threshold compensation module and a bias adjustment module. The control terminal of the drive transistor is connected to the first node. The first terminal of the drive transistor is connected to a third node. The second terminal of the drive transistor is connected to a second node. The light emission control module is connected in series with the drive transistor and connected in series with a light-emitting element. The threshold compensation module is connected in series between the control terminal of the drive transistor and the second terminal of the drive transistor. The first terminal of the bias adjustment module is connected to a bias signal terminal and the second terminal is connected to the second terminal of the drive transistor.

公开(公告)号：US20220343850A1

公开(公告)日：2022-10-27

申请号：US17859310

申请日：2022-07-07

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Jieliang LI ,  Ming YANG

IPC: G09G3/3233 ,  G09G3/3266

Abstract: Provided are a method for driving a display panel and a display device. In the method for driving a display panel, at least one picture update period includes a data write stage, a data retention stage, and a data compensation stage; at least one of the data compensation stage precedes at least one of the data write stage; at the data compensation stage, a gate scanning signal is provided for and a compensation data voltage is written to a pixel unit; at the data write stage, the gate scanning signal is provided for and the target data voltage is written to the pixel unit, where the compensation data voltage is less than the target data voltage; and at the data retention stage, no data voltage is written to the pixel unit.