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公开(公告)号：US20210132718A1
公开(公告)日：2021-05-06
申请号：US16837532
申请日：2020-04-01
Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.
Abstract: The present disclosure provides a flexible circuit board. The flexible circuit board includes a substrate; a conductive layer, disposed on the substrate; and a cover layer, disposed on a side of the conductive layer facing away from the substrate. The flexible circuit board is provided with a through hole penetrating through the flexible circuit board in the thickness direction. The cover layer includes a hollowed-out region located at least at an edge of one side of the through hole. The conductive layer includes an electrostatic discharge section exposed in the hollowed-out region.
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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
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.
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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.
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.
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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.
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公开(公告)号：US20230343300A1
公开(公告)日：2023-10-26
申请号：US17871289
申请日：2022-07-22
Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.
Inventor： Xigang LIU , Shuo TANG , Zhihua YU , Xiangyu GAO
IPC: G09G3/3291
CPC classification number: G09G3/3291 , G09G2310/027 , G09G2300/0842 , G09G2300/0452
Abstract: A display drive method is applied to a display panel. The display panel has a subpixel used for image display. The display drive method includes obtaining a to-be-displayed grayscale of a to-be-displayed subpixel, selecting a suitable compensation manner based on the to-be-displayed grayscale, and providing a data voltage for the to-be-displayed sub-pixel based on the selected compensation manner. The compensation manner includes a first compensation manner and a second compensation manner. When the to-be-displayed grayscale is 0 grayscale, the first compensation manner is selected. When the to-be-displayed grayscale is greater than 0 grayscale, the second compensation manner is selected. The first compensation manner is used to reduce a difference between light-emitting efficiencies of sub-pixels with different light-emitting colors under a same grayscale.
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Patent Agency Ranking
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
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.
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公开(公告)号：US20210208728A1
公开(公告)日：2021-07-08
申请号：US16825758
申请日：2020-03-20
Applicant: WuHan TianMa Micro-electronics CO., LTD.
Abstract: Provided is a display device including: a display panel including a cathode layer including a cathode electrode, and touch electrodes including a touch driving electrode; a touch driving chip electrically connected to and providing a touch driving signal to the touch driving electrode; and a signal conversion unit electrically connected to a first electrode and providing a first driving signal to the first electrode. During the charging period, the touch driving signal is charged from a first level to a second level, and the first driving signal is charged from a third level to a fourth level. During the discharging period, the touch driving signal is discharged from the second level to the first level, and the first driving signal is discharged from the fourth level to the third level. The first electrode is the cathode electrode, or located between the touch driving electrode and the cathode electrode.
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公开(公告)号：US20240005843A1
公开(公告)日：2024-01-04
申请号：US17963847
申请日：2022-10-11
Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.
IPC: G09G3/32
CPC classification number: G09G3/32 , G09G2310/0267 , G09G2320/0233 , G09G2300/0452 , G09G2300/0426
Abstract: A display panel and a display device are provided. The display panel includes pixel row groups, scanning driving circuits, first data lines and second data lines. One pixel row group includes first pixel rows and one pixel row includes a first pixel and a second pixel. A luminous efficiency of color light of the first pixel is lower than a luminous efficiency of color light of the second pixel. One scanning driving circuit includes a first sub scanning driving circuit and a second sub scanning driving circuit. In at least one image frame, a duration during which the first pixel is connected to the first data line for transmitting data voltage controlled by the first sub scanning driving circuit is larger than a duration during which the second pixel is connected to the second data line for transmitting data voltage controlled by the second sub scanning driving circuit.
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公开(公告)号：US20230206793A1
公开(公告)日：2023-06-29
申请号：US17681518
申请日：2022-02-25
Applicant: Wuhan Tianma Micro-Electronics Co., Ltd.
Inventor： Ning XU , Xiong YANG , Zhihua YU
IPC: G09G3/00
CPC classification number: G09G3/006 , G09G2330/12
Abstract: A circuit board, a display module, and a display device are provided. The circuit board includes: a base substrate including a first surface and a second surface opposite to each other; bonding pads on the first surface; test pads electrically connected to the bonding pads and disposed on the second surface; a test auxiliary structure on the second surface; and a metal layer on the second surface. The test auxiliary structure overlaps with the test pads along a first direction which is a direction perpendicular to the first surface and the second surface of the base substrate; and the metal layer includes a metal structure for transmitting a first signal and the test auxiliary structure is insulated from the metal structure.
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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.
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.
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