公开(公告)号：US20250037655A1

公开(公告)日：2025-01-30

申请号：US18763900

申请日：2024-07-03

Applicant: Wuhan Tianma Micro-Electronics Co, Ltd. ,  Wuhan Tianma Micro-Electronics Co, Ltd Shanghai Branch

Inventor： Mengjia HE ,  Yana GAO ,  Mengmeng ZHANG ,  Xingyao ZHOU ,  Gaojun HUANG

IPC: G09G3/3233

Abstract: Display panel, driving method, and display device are provided. The display panel includes sub-pixels and data lines. A sub-pixel includes a pixel circuit and a light emitting element. The pixel circuit includes a data writing module electrically connected to a driving transistor, and a data line reset module. A first terminal of the data line reset module is electrically connected to a data line, a second terminal of the data line reset module is electrically connected to a data line reset signal terminal. An operation stage of the pixel circuit at least includes a data writing stage. In the data writing stage, the data writing module transmits a data voltage signal to the driving transistor. The operation stage also includes a data line reset stage. In the data line reset stage, the data line reset signal terminal transmits a data line reset signal to the data line.

公开(公告)号：US20250046246A1

公开(公告)日：2025-02-06

申请号：US18639525

申请日：2024-04-18

Applicant: Wuhan Tianma Micro-Electronics Co., Ltd. ,  Wuhan Tianma Micro-Electronics Co., Ltd. Shanghai Branch

Inventor： Yana GAO ,  Gaojun HUANG ,  Xingyao ZHOU

IPC: G09G3/3233

Abstract: A display panel includes a light-emitting element, a pixel circuit, and a peripheral drive circuit. The pixel circuit includes a drive module, a first reset module, and a compensation module. The operation process includes a power-on stage and a display stage in sequence. The power-on stage includes a first phase and a second phase in sequence. For part of the frames of the power-on stage, the peripheral drive circuit provides a first control signal to a control terminal of the first reset module. The first reset module is turned on. The peripheral drive circuit provides a second control signal to a control terminal of the compensation module. The compensation module is turned on. In the second phase, the peripheral drive circuit provides a first power supply voltage to a first terminal and/or provides a second power supply voltage to a second terminal. Problems of power-on flickering are improved.

公开(公告)号：US20230419904A1

公开(公告)日：2023-12-28

申请号：US18464053

申请日：2023-09-08

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

Inventor： Jian KUANG ,  Mengmeng ZHANG ,  Xingyao ZHOU ,  Yana GAO

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2310/0262 ,  G09G2310/0202 ,  G09G2320/0247 ,  G09G2320/0233 ,  G09G2320/0626 ,  G09G2330/021

Abstract: Provided are a display panel, a method for driving a display panel, and a display apparatus. The display panel includes a light-emitting element, a pixel driver circuit, and a control circuit. The pixel driver circuit includes a driver transistor and a first light emission control switch. A working mode of the display panel includes a first mode. In the first mode, a working cycle of the pixel driver circuit includes a data writing phase and at least one data holding phase subsequent to the data writing phase. The data writing phase includes at least one first light-emitting period. The data holding phase includes at least one second light-emitting period. The control circuit controls a duration of a first one of the at least one first light-emitting period in the data writing phase to be less than a duration of one of the at least one second light-emitting period.

公开(公告)号：US20200144351A1

公开(公告)日：2020-05-07

申请号：US16261658

申请日：2019-01-30

Applicant: WuHan TianMa Micro-Electronics Co., Ltd.

Inventor： Xinzhao LIU ,  Kaihong HUANG ,  Min CHEN ,  Jiayao YANG ,  Lin CHENG ,  Yana GAO

IPC: H01L27/32 ,  H01L51/52

Abstract: A display panel and a display device are provided. The display panel has a display region and a peripheral region surrounding the display region. The display panel includes: a scan driving circuit arranged in the peripheral region; a low-level voltage signal line arranged in the peripheral region and electrically connected to the scan driving circuit; an auxiliary metal line arranged in the peripheral region and electrically connected to the low-level voltage signal line. The peripheral region includes a first and second peripheral region located on opposite sides of the display region in a first direction, and a third and fourth peripheral region located on opposite sides of the display region in a second direction, the first direction being perpendicular to the second direction. The auxiliary metal line at least extends in the first, third and second peripheral region to form a structure partially surrounding the display region.

公开(公告)号：US20230098040A1

公开(公告)日：2023-03-30

申请号：US18077849

申请日：2022-12-08

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

Inventor： Xingyao ZHOU ,  Yana GAO ,  Kang YANG ,  Wei LIU ,  Qijun YAO

IPC: G09G3/32

Abstract: A display panel has a non-display area and a display area including first and second display areas. The display panel includes pixel circuits located in the display area, and driving circuits located in the non-display area. Each pixel circuit includes a driving transistor and a first transistor electrically connected to a gate of the driving transistor. The pixel circuits include first pixel circuits electrically connected to pixels located in the first display area and second pixel circuits electrically connected to pixels located in the second display area. A gate of the first transistor in the first pixel circuit and a gate of the first transistor in the second pixel circuit are coupled to different driving circuits.

公开(公告)号：US20210327358A1

公开(公告)日：2021-10-21

申请号：US17359684

申请日：2021-06-28

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

Inventor： Dongxu XIANG ,  Renyuan ZHU ,  Yue LI ,  Yana GAO ,  Xingyao ZHOU ,  Zhonglan CAI

IPC: G09G3/3258 ,  G09G3/3233

Abstract: Disclosed are a display panel and a display device. When a display area is divided into a first display area and a second display area, and the number of pixels in a row of pixels in the second display area is smaller than the number of pixels in a row of pixels in the first display area, a load on a scan signal line connected with a row of pixels in the second display area is lower than a load on a scan signal line connected with a row of pixels in the first display area, and at least one of the respective scan signal lines connected with the respective rows of pixels in the second display area is connected with a compensation capacitor.

公开(公告)号：US20200074927A1

公开(公告)日：2020-03-05

申请号：US16376050

申请日：2019-04-05

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Haojie XU ,  Xingyao ZHOU ,  Yue LI ,  Yana GAO

IPC: G09G3/3258

Abstract: An organic light-emitting diode (OLED) compensation circuit, a display panel and a display apparatus are provided. The OLED compensation circuit includes a first transistor, a second transistor, a third transistor, a fourth transistor, a storage capacitor and an OLED element. For the first transistor, a gate electrode is electrically connected to a first scanning signal line, a first electrode electrically connected to a data signal line, and a second electrode electrically connected to a first node. For the second transistor, a gate electrode is electrically connected to a first light-emitting control signal line, a first electrode electrically connected to a first voltage signal line, and a second electrode electrically connected to a second node. For the third transistor, a gate electrode is electrically connected to the first node, a first electrode electrically connected to the second node, and a second electrode electrically connected to a third node.

公开(公告)号：US20230316976A1

公开(公告)日：2023-10-05

申请号：US18306464

申请日：2023-04-25

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  Wuhan Tianma Microelectronics Co., Ltd. Shanghai Branch

Inventor： Xingyao ZHOU ,  Yana GAO ,  Kang YANG ,  Wei LIU ,  Qijun YAO

IPC: G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/0842 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/0247 ,  G09G2330/021 ,  G09G2340/00

Abstract: A display device including a display panel having a display area. The display panel includes pixel circuits located in the display area. Each pixel circuit includes a driving transistor and a voltage regulating module that is configured to adjust a node voltage of the driving transistor by a voltage provided by one voltage regulating signal line of voltage regulating signal lines. The pixel circuits have data refresh frequencies including first and second frequencies. The first frequency is greater than the second frequency. When one pixel circuit performs data refreshing at the first frequency, one voltage regulating signal line is configured to provide a first voltage, and when one pixel circuit performs data refreshing at the second frequency, one voltage regulating signal line is configured to provide a second voltage not equal to the first voltage.

公开(公告)号：US20190147802A1

公开(公告)日：2019-05-16

申请号：US16249904

申请日：2019-01-17

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.

Inventor： Yue LI ,  Xingyao ZHOU ,  Yana GAO

IPC: G09G3/3258 ,  H01L27/32 ,  G09G3/20 ,  G09G5/14

CPC classification number: G09G3/3258 ,  G09G3/14 ,  G09G3/2003 ,  G09G5/14 ,  G09G2320/0646 ,  G09G2320/0666 ,  G09G2330/021 ,  H01L27/3202 ,  H01L27/3211

Abstract: The present disclosure provides a display panel and a display device. The display panel has a display area and an information notification area. The display panel includes: a first organic light-emitting device arranged in the display area; a pixel driving circuit arranged in the display area, and the pixel driving circuit is configured to receive a first power voltage; and at least one second organic light-emitting device arranged in the information notification area. Each of the at least one second organic light-emitting device is electrically connected to a control circuit, and the control circuit is configured to receive a second power voltage. The second power voltage is less than the first power voltage.

公开(公告)号：US20180158417A1

公开(公告)日：2018-06-07

申请号：US15889164

申请日：2018-02-05

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO.,LTD.

Inventor： Dongxu XIANG ,  Renyuan ZHU ,  Yue LI ,  Yana GAO ,  Xingyao ZHOU ,  Zhonglan CAI

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/0233

Abstract: Disclosed are a display panel and a display device. When a display area is divided into a first display area and a second display area, and the number of pixels in a row of pixels in the second display area is smaller than the number of pixels in a row of pixels in the first display area, a load on a scan signal line connected with a row of pixels in the second display area is lower than a load on a scan signal line connected with a row of pixels in the first display area, and at least one of the respective scan signal lines connected with the respective rows of pixels in the second display area is connected with a compensation capacitor.