公开(公告)号：US20230162657A1

公开(公告)日：2023-05-25

申请号：US18158619

申请日：2023-01-24

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Fenxiang ZOU ,  Jieliang LI

IPC: G09G3/22

CPC classification number: G09G3/22 ,  G09G2310/0286 ,  G09G2300/0426 ,  G09G2310/0267

Abstract: A display panel includes a base substrate, drive circuits, pixel circuits, and signal line groups. The drive circuits and the pixel circuits are arranged on the base substrate. The drive circuits provide control signals for the pixel circuits. The pixel circuits provide drive currents for light-emitting elements of the display panel. The drive circuits include a first drive circuit and a second drive circuit. The signal line groups include a first signal line group and a second signal line group. The first signal line group includes M signal lines that provide signals for the first drive circuit. The second signal line group includes N signal lines that provide signals for the second drive circuit, M≥1, and N≥1. The first drive circuit includes S1 level shift registers extending along a first direction, and/or the second drive circuit includes S2 level shift registers extending along the first direction.

公开(公告)号：US20230070413A1

公开(公告)日：2023-03-09

申请号：US17456789

申请日：2021-11-29

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Yuping XU ,  Jieliang LI

IPC: G09G3/32 ,  H01L27/12 ,  H01L29/786

Abstract: A display panel and a display device are provided. The display panel includes: a pixel circuit including a driving transistor, a first transistor, and a second transistor; a light-emitting element; a first signal line connected to a gate of the first transistor; a second signal line connected to a gate of the second transistor; and a first capacitor. A source or drain of the first transistor is connected to a gate of the driving transistor; and a source or drain of the second transistor is connected to a source or drain of the driving transistor. When being projected on a surface of the display panel, the second signal line is located between the gate of the driving transistor and the first signal line, or the first signal line and the second signal line are located at two sides of the gate of the driving transistor respectively.

公开(公告)号：US20240331621A1

公开(公告)日：2024-10-03

申请号：US18737385

申请日：2024-06-07

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Wanming HUANG ,  Jieliang LI ,  Yuheng ZHANG

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2310/0243 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/0247

Abstract: A display panel includes a pixel circuit including a driving transistor, a driving circuit configured to provide a control signal to the pixel circuit, and a clock signal line configured to provide a clock signal for the driving circuit. A data refresh period of the pixel circuit includes a data writing stage and a holding stage. When the pixel circuit is operated in the data writing stage, a clock pulse frequency of the clock signal is a first frequency F1 in at least one stage of the N stages. When the pixel circuit is operated in the holding stage, the clock pulse frequency of the clock signal is a second frequency F2 in at least one stage of the N stages, the clock pulse frequency of the clock signal is a third frequency F3 in at least one stage of the N stages. F1>F2>F3≥0.

公开(公告)号：US20240304137A1

公开(公告)日：2024-09-12

申请号：US18665604

申请日：2024-05-16

Applicant: XIAMEN TIANMA DISPLAY TECHNOLOGY CO., LTD.

Inventor： Jieliang LI ,  Ping AN

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/0275 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2330/021

Abstract: A display panel includes: a light emitting element including a first light emitting element and a second light emitting element; and a pixel circuit including a first pixel circuit and a second pixel circuit. The first and second pixel circuits are respectively connected to the first and second light emitting elements. The pixel circuit is configured to receive a bias adjustment signal including a first bias adjustment signal and a second bias adjustment signal, and the first and second pixel circuits are respectively configured to receive the first and second bias adjustment signals. Areas of the first and second light emitting elements are respectively S1 and S2, and voltage values of the first and second bias adjustment signals are V1 and V2, where (S1-S2)×(|V1|−|V2|)≠0. A display device including the display panel is also provided.

公开(公告)号：US20240071289A1

公开(公告)日：2024-02-29

申请号：US17987886

申请日：2022-11-16

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Jieliang LI

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/0275 ,  G09G2310/06 ,  G09G2310/061 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2330/021

Abstract: The embodiments of the present application provide a pixel circuit and a driving method thereof, a display panel and a display device. The pixel circuit includes: a driving module; a first bias module configured to provide a first bias signal; wherein a light-emitting cycle of the light-emitting element comprises a refresh frame or a hold frame, each of the refresh frame and the hold frame comprises a first stage and a second stage, the first stage comprises one or more bias stages, and the second stage comprises a light-emitting stage, and wherein in the bias stages, the first bias module is turned on, and the first bias signal is transmitted to the driving module; wherein a turn-on duration of the first bias module in the hold frame is greater than a turn-on duration of the first bias module in the refresh frame.

公开(公告)号：US20230282157A1

公开(公告)日：2023-09-07

申请号：US18103690

申请日：2023-01-31

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Jieliang LI ,  Ping AN ,  Guoxing CHEN ,  Yuping XU

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2320/0666 ,  G09G2320/0247

Abstract: Provided are a display panel and a display device. The display panel includes a first display region, a second display region and pixel circuits. The pixel circuits include a first pixel circuit and a second pixel circuit. The first pixel circuit is configured to provide a drive current for a light-emitting element in the first display region. The second pixel circuit is configured to provide a drive current for a light-emitting element in the second display region. The pixel circuits further include at least one bias adjustment module, each of which is configured to provide a bias adjustment signal for a respective one drive transistor. A preset electrode of a drive transistor in the first pixel circuit is connected to one bias adjustment module and a preset electrode of a drive transistor in the second pixel circuit is connected to no bias adjustment module.

公开(公告)号：US20230162659A1

公开(公告)日：2023-05-25

申请号：US18158659

申请日：2023-01-24

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Fenxiang ZOU ,  Jieliang LI

IPC: G09G3/22

CPC classification number: G09G3/22 ,  G09G2310/0286 ,  G09G2300/0426 ,  G09G2310/0267

Abstract: A display panel includes a base substrate, drive circuits, pixel circuits, and line groups. The drive circuits and the pixel circuits are arranged on the base substrate. The drive circuits provide control signals for the pixel circuits. The pixel circuits provide drive currents for light-emitting elements of the display panel. The drive circuits include a first drive circuit and a second drive circuit. The signal line groups include a first signal line group and a second signal line group. The first signal line group includes M signal lines that provide signals for the first drive circuit. The second signal line group includes N signal lines that provide signals for the second drive circuit, M≥1, and N≥1. The first drive circuit includes S1 level shift registers extending along a first direction. The second drive circuit includes S2 level shift registers extending along the first direction.

公开(公告)号：US20230154383A1

公开(公告)日：2023-05-18

申请号：US18098574

申请日：2023-01-18

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Fenxiang ZOU ,  Jieliang LI

IPC: G09G3/22

CPC classification number: G09G3/22 ,  G09G2300/0426 ,  G09G2310/0286 ,  G09G2310/0267

Abstract: A display panel includes a base substrate, drive circuits, pixel circuits, and line groups. The drive circuits and the pixel circuits are arranged on the base substrate. The drive circuits provide control signals for the pixel circuits. The pixel circuits provide drive currents for light-emitting elements of the display panel. The drive circuits include a first drive circuit and a second drive circuit. The signal line groups include a first signal line group and a second signal line group. The first signal line group includes M signal lines that provide signals for the first drive circuit. The second signal line group includes N signal lines that provide signals for the second drive circuit, M≥1, and N≥1. The first drive circuit includes S1 level shift registers extending along a first direction. The second drive circuit includes S2 level shift registers extending along the first direction.

公开(公告)号：US20230171996A1

公开(公告)日：2023-06-01

申请号：US17857198

申请日：2022-07-05

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Jieliang LI ,  Ping AN

IPC: H01L27/32

CPC classification number: H01L27/3262 ,  H01L27/3265 ,  H01L27/3276

Abstract: The present application discloses a display panel and a display device. The display panel includes: a pixel circuit and a light-emitting element; the pixel circuit includes a driving transistor, a light-emitting control transistor and an initialization transistor; the driving transistor is configured to provide a driving current for the light-emitting element; the light-emitting control transistor is configured to selectively allow the light-emitting element to enter a light-emitting stage; the initialization transistor is configured to provide an initialization signal for the light-emitting element; wherein one of the light-emitting control transistor and the initialization transistor is a PMOS transistor, and the other is an NMOS transistor, a gate of the light-emitting control transistor receives a light-emitting control signal, and a gate electrode of the initialization transistor receives the initialization signal; wherein the light-emitting control signal and the initialization signal are the same signal.

公开(公告)号：US20230169912A1

公开(公告)日：2023-06-01

申请号：US18158698

申请日：2023-01-24

Applicant: Xiamen Tianma Display Technology Co., Ltd.

Inventor： Fenxiang ZOU ,  Jieliang LI

IPC: G09G3/22

CPC classification number: G09G3/22 ,  G09G2300/0426 ,  G09G2310/0267 ,  G09G2310/0286

Abstract: A display panel. The display panel includes a base substrate, drive circuits, pixel circuits, and signal line groups. The drive circuits and the pixel circuits are arranged on the base substrate. The drive circuits provide control signals for the pixel circuits. The pixel circuits provide drive currents for light-emitting elements of the display panel. The drive circuits include a first drive circuit and a second drive circuit. The signal line groups include a first signal line group and a second signal line group. The first signal line group includes M signal lines that provide signals for the first drive circuit. The second signal line group includes N signal lines that provide signals for the second drive circuit, M≥1, and N≥1. The first drive circuit provides a light-emitting control signal for a light-emitting control transistor of the pixel circuit.