公开(公告)号：US20240063228A1

公开(公告)日：2024-02-22

申请号：US18384584

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 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 electrode, a first source electrode, and a first drain electrode. The first active layer includes silicon. The second transistor includes a second active layer, a second gate electrode, a second source electrode, and a second drain electrode. The second active layer includes an oxide semiconductor. A length of a channel region of the first transistor is L1. Along a direction perpendicular to the base substrate, a distance between the first gate electrode and the first active layer is D1. The first transistor further includes a third gate electrode. Along the direction perpendicular to the base substrate, a distance between the third gate electrode and the first active layer is D3, and D1

公开(公告)号：US20230378196A1

公开(公告)日：2023-11-23

申请号：US18229040

申请日：2023-08-01

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

Inventor： Shui HE ,  Ping AN ,  Yaqi KUANG

IPC: H01L27/12

CPC classification number: H01L27/1248 ,  H01L27/1225 ,  H01L27/1251

Abstract: Provided are a display panel and a display device. The display panel includes a base substrate; a first transistor, a second transistor and a third transistor, where the first transistor, the second transistor and the third 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 the second active layer contains an oxide semiconductor; and a first insulating layer and a second insulating layer, where the first insulating layer is disposed on one side of the second active layer facing away from the base substrate and between the second gate and the second active layer.

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：US20230290289A1

公开(公告)日：2023-09-14

申请号：US18198112

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 ,  G11C19/28

CPC classification number: G09G3/20 ,  G11C19/28 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0286

Abstract: A display panel includes a driving circuit. The driving circuit includes N levels of shift registers cascaded with each other, N≥2. A shift register of the N levels of the shift registers includes a third control unit and a fourth control unit. 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. The first voltage signal is a high-level signal and the second voltage signal is a low-level signal. The fourth control unit is configured to receive a third voltage signal and a fourth voltage signal and generate an output signal in response to the signal of the first node and the signal of the fourth node and includes a first transistor and a second transistor.

公开(公告)号：US20220254851A1

公开(公告)日：2022-08-11

申请号：US17451356

申请日：2021-10-19

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

Inventor： Shui HE ,  Ping AN

IPC: H01L27/32 ,  H01L29/786

Abstract: A display panel and a display device are provided. The display panel includes a base substrate, and one or more first transistors and one or more second transistors over the base substrate. A first transistor of the one or more first transistors includes a first active layer, and the first active layer contains silicon. A second transistor of the one or more second transistors includes a second active layer, and the second active layer contains an oxide semiconductor material. The display panel also includes a shielding layer. The shielding layer is disposed on a side of the first active layer facing away from the base substrate, and is disposed on a side of the second active layer facing away from the base substrate. Along a projection direction perpendicular to the base substrate, the shielding layer fully covers the second active layer.

公开(公告)号：US20220208051A1

公开(公告)日：2022-06-30

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：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：US20230378197A1

公开(公告)日：2023-11-23

申请号：US18229067

申请日：2023-08-01

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

Inventor： Shui HE ,  Ping AN ,  Yaqi KUANG

IPC: H01L27/12

CPC classification number: H01L27/1248 ,  H01L27/1225 ,  H01L27/1251

Abstract: Provided are a display panel and a display device. The display panel includes a base substrate; a first transistor and a second transistor and a third transistor, where the first transistor, the second transistor and the third 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 the second active layer contains an oxide semiconductor and is disposed on one side of the first active layer facing away from the base substrate; and a first insulating layer and a second insulating layer, where the first insulating layer is disposed on one side of the second active layer facing away from the base substrate and between the second gate and the second active layer.

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.