公开(公告)号：US10796657B1

公开(公告)日：2020-10-06

申请号：US16673598

申请日：2019-11-04

Applicant: WuHan TianMa Micro-electronics CO., LTD

Inventor： Chuan Liu ,  Junjie Fu ,  Zhihua Yu ,  Tianlong Xiang

IPC: G09G3/36 ,  G06F1/04 ,  H03K3/353

Abstract: Provided is a conversion circuit, including a switch signal input terminal; first and second input terminals; and first and second output terminals. The switch signal input terminal receives a switch control signal. The first and second input terminals receive first and second input signals, and polarities of first and second input signals are different and alternately switch. Depending on the switch control signal, the first input terminal is in communication with the first output terminal and the second input terminal is in communication with the second output terminal, or the second input terminal is in communication with the first output terminal and the first input terminal is in communication with the second output terminal, so that a first output signal outputted from first output terminal has a consistent polarity at any time and a second output signal outputted from the second output terminal has a consistent polarity at any time.

公开(公告)号：US12062325B2

公开(公告)日：2024-08-13

申请号：US17963847

申请日：2022-10-11

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

Inventor： Shuo Tang ,  Chuan Liu ,  Zhihua Yu

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/0452 ,  G09G2310/0267 ,  G09G2320/0233

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.

公开(公告)号：US11106311B2

公开(公告)日：2021-08-31

申请号：US16825758

申请日：2020-03-20

Applicant: WuHan TianMa Micro-electronics CO., LTD.

Inventor： Chuan Liu ,  Zhihua Yu

IPC: G06F3/041 ,  G06F3/044

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.

公开(公告)号：US11201303B2

公开(公告)日：2021-12-14

申请号：US16823029

申请日：2020-03-18

Applicant: WuHan TianMa Micro-electronics CO., LTD

Inventor： Chuan Liu ,  Qianglong Li

IPC: H01L51/00 ,  H01L27/32 ,  H01L51/56

Abstract: A flexible display panel, a manufacturing method thereof, and a display device are provided. The flexible display panel includes a first base layer, a stress relief layer, a second base layer, and at least one adhesion enhancing layer. The first base layer, the stress relief layer, and the second base layer are sequentially stacked along a light exiting direction of the flexible display panel. The at least one adhesion enhancing layer is provided between the stress relief layer and at least one of the first base layer or the second base layer in such a manner that the adhesion enhancing layer enhances adhesion there between.

公开(公告)号：US11531422B2

公开(公告)日：2022-12-20

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.