公开(公告)号：US11620931B2

公开(公告)日：2023-04-04

申请号：US17644627

申请日：2021-12-16

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Yong Yuan ,  Ping An ,  Zhaokeng Cao

IPC: G09G3/20

Abstract: An inverter, a method for driving an inverter, a driving circuit and a display panel are provided. An inverter includes a first module; a second module; an initial signal input terminal; and a first level signal input terminal. The first module includes a first transistor, a second transistor, and a third transistor; control terminals of the first transistor and the second transistor are both electrically connected to the initial signal input terminal; a first terminal of the third transistor is electrically connected to the first level signal input terminal; a first terminal of the second transistor is electrically connected to a first terminal of the second transistor; a second terminal of the second transistor is electrically connected to a control terminal of the third transistor; the first module includes a leakage current control component at least electrically connected with the second terminal of the first transistor.

公开(公告)号：US11568781B2

公开(公告)日：2023-01-31

申请号：US17643557

申请日：2021-12-09

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Yong Yuan ,  Ping An ,  Zhaokeng Cao

IPC: G09G3/20 ,  G11C19/28

Abstract: A display panel and a display device are provided. The display panel includes a driving circuit. The driving circuit includes N levels of shift registers cascaded with each other, where N 2. A shift register of the N levels of shift registers includes: a first control unit, configured to receive an input signal and control a signal of a first node in response to a first clock signal; a second control unit, configured to receive a first voltage signal and a second voltage signal, and control a signal of a second node in response to the signal of the first node, the first clock signal, and a second clock signal; and a third control unit, configured to receive the first voltage signal and the second voltage signal, and control an output signal in response to the signal of the second node and a signal of the third node.

公开(公告)号：US11562676B2

公开(公告)日：2023-01-24

申请号：US17451126

申请日：2021-10-15

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Ping An

IPC: G09G3/20 ,  G11C19/28

Abstract: A display panel and a display device are provided. The display panel includes a driving circuit. The driving circuit includes N-level shift registers cascaded with each other, where N is greater than or equal to two. A shift register includes: a first control unit configured to receive an input signal and control a signal of a first node; a second control unit configured to receive a first voltage signal and control a signal of a second node; a third control unit configured to receive the first voltage signal and generate an output signal, or receive a second voltage signal and generate an output signal in response to a signal of a third node connected to the first node; and a fourth control unit configured to receive the second voltage signal and control the signal of the first node. The first and second voltage signals are high-level and low-level signals, respectively.

公开(公告)号：US20220208792A1

公开(公告)日：2022-06-30

申请号：US17451136

申请日：2021-10-15

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Yong Yuan ,  Ping An ,  Zhaokeng Cao

IPC: H01L27/12

Abstract: A display panel and a display device are provided. The display panel includes at least one driving circuit and at least one pixel circuit. A driving circuit provides a driving signal for a pixel circuit. The driving circuit includes N-level shift registers cascaded with each other, where N is greater than or equal to two. A shift register includes at least one first active layer, and an active layer with a largest area is a first preset active layer. The pixel circuit includes at least one second active layer, where an active layer with a largest area among active layers containing silicon is a second preset active layer, and an active layer with a largest area among active layers containing oxide semiconductor is a third preset active layer. The first preset active layer has an area greater than the second preset active layer and the third preset active layer.

公开(公告)号：US20220085074A1

公开(公告)日：2022-03-17

申请号：US17534459

申请日：2021-11-24

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

Inventor： Shui HE ,  Ping An

IPC: H01L27/12

Abstract: Provided are a display panel and a display device. The display panel includes a base substrate, a first transistor, and a second transistor. The first transistor and the second transistor are formed on the base substrate, the first transistor includes a first active layer, a first gate, a first source, and a first drain, and the first active layer comprises silicon; the second transistor includes a second active layer, a second gate, a second source, and a second drain, and the second active layer comprises an oxide semiconductor and is disposed on one side of the first active layer facing away from the base substrate. In a first direction perpendicular to the base substrate, a first distance between the first gate and the first active layer is D1, a second distance between the second gate and the second active layer is D2, and D1

公开(公告)号：US20220076604A1

公开(公告)日：2022-03-10

申请号：US17528138

申请日：2021-11-16

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Jinjin Yang ,  Ping An

IPC: G09G3/20 ,  G11C19/28

Abstract: Provided are a display panel and a display device. The display panel includes a driving circuit comprising N stages of cascaded shift registers. Each shift register includes a first control unit, a second control unit, a third control unit, and a fourth control unit. The first control unit is configured to receive an input signal and control a signal of a first node. The second control unit is configured to receive a first voltage signal and control a signal of a second node. The third control unit is configured to receive a signal of a fourth node and control an output signal, or receive a second voltage signal and control the output signal. The fourth control unit is configured to receive the first voltage signal and a third voltage signal and control the signal of the fourth node.

公开(公告)号：US20210257429A1

公开(公告)日：2021-08-19

申请号：US17246443

申请日：2021-04-30

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

Inventor： Shui He ,  Ping An ,  Yaqi Kuang

IPC: H01L27/32 ,  G09G3/3233

Abstract: Provided are a display panel and a display device. The display panel includes a base substrate; a first transistor and a second transistor, where the first transistor and the second transistor are formed on the base substrate, the first transistor includes a first active layer, a first gate, a first source, and a first drain, the first active layer contains silicon, the second transistor includes a second active layer, a second gate, a second source, and a second drain; and a first insulating layer and a second insulating layer, where the first insulating layer is located on a side of the second active layer facing away from the base substrate and between the second gate and the second active layer, the second insulating layer is located on a side of the second active layer facing towards the base substrate.