公开(公告)号：US12279459B2

公开(公告)日：2025-04-15

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: G09G3/3225 ,  H10D86/40 ,  H10D86/60 ,  H10K59/121

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：US12236872B2

公开(公告)日：2025-02-25

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

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：US12200974B2

公开(公告)日：2025-01-14

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 ,  H10K59/121 ,  H10K59/126 ,  H10K59/131

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：US12218145B2

公开(公告)日：2025-02-04

申请号：US18384565

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 ,  H10K59/121

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 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. A length of a channel region of the second transistor is L2. Along the direction perpendicular to the base substrate, a distance between the second gate electrode and the second active layer is D2.

公开(公告)号：US12080246B2

公开(公告)日：2024-09-03

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: G09G3/3266 ,  G09G3/20 ,  G11C19/20 ,  G11C19/28 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/20 ,  G11C19/20 ,  G11C19/28 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2310/08

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：US12046176B2

公开(公告)日：2024-07-23

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 ,  G11C19/28 ,  G09G3/3266

CPC classification number: G09G3/20 ,  G11C19/20 ,  G11C19/28 ,  G09G3/3266 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2310/08

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：US12014676B2

公开(公告)日：2024-06-18

申请号：US18187708

申请日：2023-03-22

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

Inventor： Jieliang Li ,  Ping An

IPC: G09G3/32 ,  G09G3/3233 ,  G09G3/3291 ,  H01L27/12

CPC classification number: G09G3/32 ,  G09G3/3233 ,  G09G3/3291 ,  H01L27/124 ,  G09G2300/0819 ,  G09G2310/0216 ,  G09G2310/0251 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045

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 includes a bias adjustment signal line, at least one of a reset signal line or an initialization signal line. 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. The bias adjustment signal bus and the reset signal bus are disposed in a same layer, in a case where the bias adjustment signal bus is father away from a display region of the display panel than the reset signal bus, the bias adjustment signal bus is electrically connected to a corresponding bias adjustment signal line through a bridge disposed in a different layer from the bias adjustment signal bus.

公开(公告)号：US11854473B2

公开(公告)日：2023-12-26

申请号：US18108373

申请日：2023-02-10

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

Inventor： Qingjun Lai ,  Yihua Zhu ,  Ping An

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2320/0233 ,  G09G2320/045

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：US11800749B2

公开(公告)日：2023-10-24

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: H01L51/56 ,  H10K59/121 ,  G09G3/3233 ,  H10K59/124

CPC classification number: H10K59/1213 ,  G09G3/3233 ,  H10K59/124

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.

公开(公告)号：US11676522B2

公开(公告)日：2023-06-13

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

CPC classification number: G09G3/20 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2310/0286

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.