公开(公告)号：US11830418B2

公开(公告)日：2023-11-28

申请号：US18076566

申请日：2022-12-07

Applicant: Xiamen Tianma Microelectronics Co., Ltd.

Inventor： Jian Liu ,  Liu Wang ,  Wei Wu ,  Zhijie Wang ,  Shumao Wu ,  Guochang Lai

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0842 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/0286 ,  G09G2310/061 ,  G09G2320/0233 ,  G09G2320/0247

Abstract: Provided is a pixel driving circuit. The pixel driving circuit includes a reset unit, a storage unit, an initialization unit, a drive unit, a threshold compensation unit, and a data write unit. A first terminal of the reset unit is configured to input the signal output by a reset power supply. A second terminal of the reset unit is connected to the control terminal of the drive unit and configured to provide the reset power supply for the control terminal of the drive unit during a power-on period. During the power-on period of the pixel driving circuit, the reset unit provides the reset power supply for the drive unit and performs reset control on the drive unit, so that the drive unit is prevented from being abnormally turned on during a power-on stage, thereby avoiding a screen flicker phenomenon.

公开(公告)号：US11768404B1

公开(公告)日：2023-09-26

申请号：US18076018

申请日：2022-12-06

Applicant: Xiamen Tianma Microelectronics Co., Ltd.

Inventor： Liu Wang ,  Jian Liu ,  Zhijie Wang ,  Shumao Wu ,  Guochang Lai

IPC: G02F1/00 ,  G02F1/1335 ,  G02F1/13357 ,  H05K1/11

CPC classification number: G02F1/133612 ,  G02F1/133603 ,  H05K1/111 ,  H05K2201/09409 ,  H05K2201/10106

Abstract: Provided are a driving substrate, a backlight, and a display device. The driving substrate includes a plurality of backlight partitions arranged in an array. Each of the plurality of backlight partitions is provided with a first pad set column and a second pad set column, where the first pad set column and the second pad set column comprise arranged along a first direction and each include a plurality of pad sets arranged along a second direction, where the first direction intersects with the second direction. A boundary on one side of the first pad set column facing away from the second pad set column is denoted as a first boundary, and a boundary on one side of the second pad set column facing away from the first pad set column is denoted as a second boundary.