公开(公告)号：US11763760B1

公开(公告)日：2023-09-19

申请号：US17772645

申请日：2022-04-13

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Xiaoying Guo ,  Junyao Fan

IPC: G09G3/34 ,  G09G3/32

CPC classification number: G09G3/342 ,  G09G3/32 ,  G09G3/3406 ,  G09G2330/021

Abstract: The present application discloses a backlight module and a display device. The backlight module includes a plurality of light-emitting units, a plurality of drive chips, a plurality of cascaded voltage comparators, and a voltage adjustment module. The light-emitting unit connected to a control terminal of a same drive chip is connected with a same initial drive voltage. The plurality of cascaded voltage comparators output an adjustment voltage in a N-th stage based on a preset voltage and a plurality of to-be-detected voltages. The voltage adjustment module is configured to adjust the initial drive voltage based on the adjustment voltage in the N-th stage.