公开(公告)号：US11715743B2

公开(公告)日：2023-08-01

申请号：US17191891

申请日：2021-03-04

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

Inventor： Zi Xu ,  Lin Cheng ,  Xinzhao Liu

IPC: H01L27/12 ,  G01R31/28 ,  G02F1/1362 ,  G02F1/1333 ,  H10K59/40 ,  H10K59/131

CPC classification number: H01L27/124 ,  G01R31/2884 ,  G02F1/13338 ,  G02F1/13629 ,  G02F1/136254 ,  H10K59/131 ,  H10K59/40

Abstract: A display panel, a crack detection method and a display device are provided. The display panel includes a substrate, a signal wiring disposed over the substrate, and a test wiring insulated from the signal wiring and disposed on a side of the signal wiring facing away from the substrate. An orthographic projection of the test wiring on the substrate overlaps an orthographic projection of the signal wiring on the substrate. The display panel also includes a first test terminal disposed over the substrate and electrically connected with an end of the test wiring, and a second test terminal disposed over the substrate and electrically connected with another end of the test wiring.

公开(公告)号：US11385740B2

公开(公告)日：2022-07-12

申请号：US17213000

申请日：2021-03-25

Applicant: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD. ,  WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH

Inventor： Lin Cheng ,  Yingying Wu ,  Shuai Yang ,  Xingyao Zhou

IPC: G09G3/3266 ,  G09G3/3275 ,  G06F3/041

Abstract: An organic light-emitting display panel and a method for driving the same, and a display device are provided. The organic light-emitting display panel includes a light-emitting driving circuit and a touch signal driving circuit. The light-emitting driving circuit is configured to provide, within a scanning duration of each frame, a light-emitting control signal having b1 light-emitting cycles and a duty cycle of a1 to each row of pixels. A display area scanning duration includes at least one touch duration during which the touch signal driving circuit provides a touch signal to the display panel and the number of rows of the light-emitting pixel-rows of the display panel remains unchanged.

公开(公告)号：US10700152B2

公开(公告)日：2020-06-30

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: H01L51/52 ,  H01L27/32

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.