公开(公告)号：US20220223084A1

公开(公告)日：2022-07-14

申请号：US17451687

申请日：2021-10-21

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

Inventor： Qingjun LAI ,  Yihua ZHU ,  Yong YUAN ,  Ping AN ,  Zhaokeng CAO

IPC: G09G3/20

Abstract: A display panel and a display device are provided. A shift register of the display panel 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 control a signal of a second node in response to the input signal and the first clock signal; a third control unit, configured to receive the first voltage signal and a second voltage signal and control a signal of a fourth node in response to the signal of the second node and a signal of a third node; and a fourth control unit, configured to receive a third voltage signal and a fourth voltage signal and generate an output signal in response to the signals of the second node and the fourth node.

公开(公告)号：US20220223083A1

公开(公告)日：2022-07-14

申请号：US17451235

申请日：2021-10-18

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

Inventor： Qingjun LAI ,  Yihua ZHU

IPC: G09G3/20

Abstract: A display panel and a display device are provided. The display panel includes a driving circuit including 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 a second voltage signal, and control a signal of a second node; a third control unit configured to receive the first voltage signal and the second voltage signal, and control a signal of a fourth node; and a fourth control unit configured to receive a third voltage signal and a fourth voltage signal, and generate an output signal. The first and third voltage signals are high-level signals, and the second and fourth voltage signals are low-level signals.

公开(公告)号：US20210407383A1

公开(公告)日：2021-12-30

申请号：US17467933

申请日：2021-09-07

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

Inventor： Qingjun LAI ,  Yihua Zhu ,  Ping An

IPC: G09G3/32

Abstract: Provided are a display panel, a driving method thereof and a display device. The display panel includes: a pixel circuit and a light-emitting element, where the pixel circuit includes a light emitting control module, a drive module and a compensation module; the light emitting control module includes a first light emitting control module configured to selectively provide a first power supply signal for the drive module; the drive module is configured to provide a drive current for the light-emitting element and comprises a drive transistor; the compensation module is configured to compensate a threshold voltage of the drive transistor; and a working process of the pixel circuit includes a light emitting stage and a bias stage.

公开(公告)号：US20170083149A1

公开(公告)日：2017-03-23

申请号：US15364000

申请日：2016-11-29

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

Inventor： Qingjun LAI ,  Zhaokeng CAO ,  Poping SHEN ,  Xiufeng ZHOU ,  Yihua ZHU ,  Zhaodong ZHANG

IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G02F1/13338 ,  G06F3/0412 ,  G06F3/044

Abstract: A touch-control display panel and an electronic device are provided. The touch-control display panel comprises a first substrate, and the first substrate includes a display region and a non-display region surrounding the display region. The non-display region includes a first non-display region and a second non-display region. Further, a first electrode layer is disposed on the first substrate. The first electrode layer includes a first electrode matrix having at least three first electrode columns. Each first electrode column includes a plurality of first electrodes, and each first electrode is connected to an electrode line. The first electrode matrix is divided into a first electrode group and a second electrode group, the electrode lines corresponding to the first electrodes in the first electrode group extend from the first non-display region, and the electrode lines corresponding to the first electrodes in the second electrode group extend from the second non-display region.

公开(公告)号：US20240063227A1

公开(公告)日：2024-02-22

申请号：US18384578

申请日：2023-10-27

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

Inventor： Qingjun LAI ,  Yihua ZHU ,  Yong YUAN ,  Ping AN ,  Zhaokeng CAO

IPC: H01L27/12 ,  G09G3/3225

CPC classification number: H01L27/1237 ,  H01L27/1251 ,  G09G3/3225 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2300/0465 ,  G09G2300/0814 ,  H01L27/1225 ,  H10K59/1213

Abstract: A display panel includes a base substrate, a third transistor and a fourth transistor. The third transistor and the fourth transistor are formed on the base substrate. The third transistor includes a sixth gate electrode, a third active layer, a third source electrode, and a third drain electrode. The third active layer includes an oxide semiconductor. The fourth transistor includes an eighth gate electrode, a fourth active layer, a fourth source electrode, and a fourth drain electrode. The fourth active layer includes another oxide semiconductor. Along a direction perpendicular to the base substrate, a distance between the sixth gate electrode and the third active layer is D6. A channel region of the third transistor defined by the sixth gate electrode is a sixth channel region. A length of the sixth channel region is L6. A sixth area S6=L6×D6.

公开(公告)号：US20230290288A1

公开(公告)日：2023-09-14

申请号：US18198076

申请日：2023-05-16

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

Inventor： Qingjun LAI ,  Yihua ZHU ,  Yong YUAN ,  Ping AN ,  Zhaokeng CAO

IPC: G09G3/20 ,  G11C19/20

CPC classification number: G09G3/20 ,  G11C19/20 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2310/061

Abstract: A display panel includes a shift register, a pixel circuit, and a driving circuit. The 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 in response to a first clock signal. The second control unit is configured to receive a first voltage signal and control a signal of a second node in response to the input signal and the first clock signal. The third control unit is configured to receive the first voltage signal and a second voltage signal and control a signal of a fourth node in response to the signal of the second node and a signal of a third node.

公开(公告)号：US20230222979A1

公开(公告)日：2023-07-13

申请号：US18183112

申请日：2023-03-13

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

Inventor： Qingjun LAI ,  Yihua ZHU ,  Jinjin YANG ,  Ping AN

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2320/0233 ,  G09G2310/061 ,  G09G2330/021

Abstract: Disclosed are a display panel and a display device. The display panel includes a pixel circuit and a light-emitting element, in the pixel circuit, the drive device includes a drive transistor; the reset device includes a first double-gate transistor, and a connection node between the first sub-transistor and the second sub-transistor is a second node. The pixel circuit is connected to a first power supply voltage signal terminal, and is configured to receive a first power supply voltage signal, and the first power supply voltage signal is a constant high level signal; and the pixel circuit includes a first capacitor, a first pole plate of the first capacitor is connected to the first power supply voltage signal terminal, and a second pole plate of the first capacitor is connected to the second node.

公开(公告)号：US20220335874A1

公开(公告)日：2022-10-20

申请号：US17856568

申请日：2022-07-01

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

Inventor： Qingjun LAI ,  Yihua ZHU

IPC: G09G3/20

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. the display panel further includes a first voltage signal line, providing a first voltage signal for the driving circuit; a second voltage signal line, providing a second voltage signal for the driving circuit; a third voltage signal line, providing a third voltage signal for the driving circuit; and a fourth voltage signal line, providing a fourth voltage signal for the driving circuit. At least one of the third voltage signal line and the fourth voltage signal line is disposed on a side of at least one of the first voltage signal line and the second voltage signal line facing toward a display region of the display panel.

公开(公告)号：US20220254292A1

公开(公告)日：2022-08-11

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：US20220208797A1

公开(公告)日：2022-06-30

申请号：US17452969

申请日：2021-10-29

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

Inventor： Qingjun LAI ,  Yihua ZHU ,  Yong YUAN ,  Ping AN ,  Zhaokeng CAO

IPC: H01L27/12 ,  G09G3/3225

Abstract: A display panel and a display device are provided in the present disclosure. The display panel includes a base substrate, a first transistor, a second transistor, a pixel circuit, and a drive circuit. A first active layer of the first transistor includes silicon; and a second active layer of the second transistor includes an oxide semiconductor. A length of a channel region of the first transistor is LL a distance between a first gate electrode and the first active layer is D1, and a first area S1=L1×D1; and a length of a channel region of the second transistor is L2, a distance between a second gate electrode and the second active layer is D2, and a second area S2=L2×D2, where S1