公开(公告)号：US20240379043A1

公开(公告)日：2024-11-14

申请号：US18783337

申请日：2024-07-24

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Qingjun LAI ,  Chengxu LI

IPC: G09G3/20 ,  G11C19/28

Abstract: Provided are a display panel and a display device. The display panel includes a drive circuit including cascaded N stage shift registers. A shift register includes a control unit, an initial output unit and a first output unit. The control unit is configured to at least receive an input signal and control a signal of the first output node and a signal of the second output node. The initial output unit is configured to at least receive a signal of the first output node and a signal of the second output node, and control an initial output signal; the initial output signal of an xth stage shift register is the input signal of a yth stage shift register. The first output unit is configured to at least receive the signal of the first output node and the signal of the second output node, and control a first output signal.

公开(公告)号：US20240386840A1

公开(公告)日：2024-11-21

申请号：US18786126

申请日：2024-07-26

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Qingjun LAI ,  Chengxu LI ,  Xiangyuan LI ,  Jinjin YANG ,  Yong YUAN

IPC: G09G3/32 ,  G11C19/28

Abstract: A display panel includes a driver circuit including shift registers with N stages and being cascade with each other, where N≥2, and each shift register includes a first control portion and a second control portion. The first control portion is configured to control a first output signal, where the first output signal of an i-th stage of shift register is an input signal of a j-th stage of shift register, and 1≤i≤N, 1≤j≤N. The second control portion is configured to receive at least the first output signal and a frequency control signal and control a second output signal. In a case where the first output signal is an effective pulse and a time period of the effective pulse is within a time period of an effective pulse of the frequency control signal, the second output signal is the effective pulse.

公开(公告)号：US20240404474A1

公开(公告)日：2024-12-05

申请号：US18805936

申请日：2024-08-15

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Xiangyuan LI ,  Chengxu LI ,  Jingzhu LI

IPC: G09G3/3233

Abstract: Provided are a display panel and a display device. The display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a drive module and a bias adjustment module. The drive module is configured to provide a drive current to the light-emitting element, and includes a drive transistor. The bias adjustment module is connected between a first terminal of the drive transistor and a bias signal terminal, a control terminal of the bias adjustment module is connected to a first scan signal terminal, and a second terminal of the drive transistor is coupled to the light-emitting element. A working process of the pixel circuit includes a pre-stage, the pre-stage includes a bias adjustment stage, the bias adjustment module is turned on in the bias adjustment stage, and the bias signal terminal provides a bias signal to the first terminal of the drive transistor.

公开(公告)号：US20240038151A1

公开(公告)日：2024-02-01

申请号：US18380428

申请日：2023-10-16

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Chengxu LI ,  Xiangyuan LI ,  Jingzhu LI ,  Bing WANG

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2330/021

Abstract: Provided are a display panel and a display device. The display panel includes a substrate and a drive circuit disposed on one side of the substrate. The drive circuit includes a first transistor. The first transistor includes a first active layer. The first active layer includes an oxide semiconductor. The drive circuit also includes a first capacitor. One capacitor plate of the first capacitor is disposed in the same layer as the first active layer. In the display panel according to embodiments of the present disclosure, a substrate of a first capacitor in a drive circuit is disposed in the same layer as an active layer of an oxide semiconductor.

公开(公告)号：US20230354660A1

公开(公告)日：2023-11-02

申请号：US18217383

申请日：2023-06-30

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Chengxu LI ,  Xiangyuan LI ,  Jiaocheng WANG

IPC: H10K59/131

CPC classification number: H10K59/131

Abstract: Provided are a display panel and a display device. The display panel includes a display region and a first fan-out region located on a side of the display region. The display region further includes a substrate and a first metal layer, a second metal layer and a third metal layer which are located on a side of the substrate and are located at the first fan-out region and are sequentially disposed in different layers insulated from one another, where the first metal layer includes multiple first signal lines, the second metal layer includes multiple second signal lines, and the third metal layer includes multiple third signal lines. In the direction perpendicular to the plane where the substrate is located, at least one third signal line overlaps one first signal line, and the at least one third signal line overlaps one second signal line.