公开(公告)号：US20220076632A1

公开(公告)日：2022-03-10

申请号：US17527418

申请日：2021-11-16

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

Inventor： Shuo TANG ,  Zhihua YU ,  Jun LI

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3275

Abstract: Provided are a display panel and a display device. The display panel includes a pixel driving circuit and a reset control circuit. The pixel driving circuit includes a light-emitting element, a first reset module, a first control module, a data write module, a driving transistor, a second reset module and a second control module. In the initial reset stage of the pixel driving circuit, the reset control circuit is configured to control the first reset module to turn on and apply a reset voltage of the reset voltage terminal to the first electrode of the light-emitting element, and the first scan signal terminal is configured to control the second reset module to turn on and apply the reset voltage to the gate of the driving transistor.

公开(公告)号：US20220035484A1

公开(公告)日：2022-02-03

申请号：US17019773

申请日：2020-09-14

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

Inventor： Houfu GONG ,  Zhenhua LIANG ,  Han WU ,  Zhenyuan ZHANG ,  Jun LI ,  Zhihua YU

IPC: G06F3/044 ,  G06F3/041

Abstract: A display panel, a display device and a control method are provided. The display panel includes a display area and a non-display area, a base substrate, and touch electrodes on a side of the base substrate facing a light-exiting surface of the display panel. The display area includes a first display area and a second display area that at least partially surrounds the first display area, the touch electrodes are at least distributed in the display area, the touch electrodes at least include a first touch electrode located in the first display area, the first touch electrode includes at least one first touch electrode unit, and the first touch electrode unit includes at least one hollowed part, along a direction perpendicular to the base substrate, the hollowed part runs through the first touch electrode unit, and the first touch electrode is a self-capacitive touch electrode.

公开(公告)号：US20210065596A1

公开(公告)日：2021-03-04

申请号：US16730867

申请日：2019-12-30

Applicant: WuHan TianMa Micro-electronics CO.,LTD

Inventor： Han WU ,  Houfu GONG ,  Jun LI

IPC: G09G3/00 ,  G06F1/16

Abstract: A flexible circuit board, a display panel, a display device, and a test method are provided. The flexible circuit board includes a flexible circuit board body and a driving chip. First to third dummy terminals are provided on a surface of the flexible circuit board body. Fourth to sixth dummy terminals are electrically connected to a common node in the driving chip. An external sink current output line and an external sink current input line form an external sink current loop through the driving chip. A bonding resistance between the first and fourth dummy terminals is a first bonding resistance, and a bonding resistance between the second and the fifth dummy terminals is a second bonding resistance. The first bonding resistance and the second bonding resistance each are a resistance on the external sink current loop.

公开(公告)号：US20210382599A1

公开(公告)日：2021-12-09

申请号：US17406149

申请日：2021-08-19

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

Inventor： Houfu GONG ,  Miao CHEN ,  Chuan LIU ,  Jun LI ,  Zhihua YU

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/20

Abstract: Disclosed are touch display panel, method for driving touch display panel, and display device. The touch display panel includes display region including plurality of touch driver electrodes and plurality of touch sensing electrodes both arranged in array, and non-display region surrounding display region and including touch auxiliary circuit and touch driver circuit. When refresh frequency is first frequency, touch driver circuit configured to provide touch drive signal for each touch driver electrode in touch stage, and receive touch sensing signal returned by each touch sensing electrode to determine touch position according to touch sensing signal. When refresh frequency is the first frequency, touch auxiliary circuit configured to provide first voltage signal for each touch driver electrode in touch stage; and voltage of first voltage signal greater than voltage of touch drive signal. The present disclosure can increase report rate, and satisfy touch and display requirements for high refresh frequency.

公开(公告)号：US20210134198A1

公开(公告)日：2021-05-06

申请号：US17146195

申请日：2021-01-11

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

Inventor： Weiwei MA ,  Zhihua YU ,  Jun LI

IPC: G09G3/00 ,  G09G3/20

Abstract: Provided are a display module, a display device and a driving method of the display module. The display module includes: a display panel, where the display panel includes a display area and a non-display area, a substrate, and a plurality of sub-pixels and a power line disposed on the substrate; a flexible circuit board, where the flexible circuit board is bound to the substrate in the non-display area and includes a power bus electrically connected to the power line; a driver chip including at least one detection pin and at least one control pin; and a voltage detection circuit including a first detection terminal, a second detection terminal, an output terminal and a control terminal.

公开(公告)号：US20210005158A1

公开(公告)日：2021-01-07

申请号：US16675036

申请日：2019-11-05

Applicant: WuHan TianMa Micro-electronics CO.,LTD

Inventor： Yang HUANG ,  Jun LI ,  Zhihua YU

IPC: G09G5/02 ,  G09G5/10 ,  G09G3/3258 ,  G09G3/3266

Abstract: A driving chip, a control method therefor and a display device are provided. The driving chip includes Gamma voltage generating circuits, first power supply voltage output circuits and a color cast adjustment circuit. The Gamma voltage generating circuits correspond to sub-pixels of different colors. The first power supply voltage output circuits are electrically connected to different Gamma voltage generating circuits and each of the first power supply voltage output circuits is configured to output a first power supply voltage to a corresponding first power supply voltage terminal. The color cast adjustment circuit is electrically connected to each first power supply voltage output circuit, and is configured to adjust the first power supply voltage output by at least one first power supply voltage output circuits according to a light-emitting duration of a light-emitting device in a display panel per unit time.