Patent ID: 11948491
Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A grayscale controlling method, applied to a display panel including a backlight unit, and the grayscale controlling method comprising:
in a frame time, acquiring a duration of a current driving current output to the backlight unit exceeding a predetermined current value; and
adjusting a grayscale value of the backlight unit as a target grayscale value according to the duration;
wherein the step of acquiring the duration of the current driving current output to the backlight unit exceeding the predetermined current value specifically comprises:
outputting a warning signal when the current driving current output to the backlight unit exceeds the predetermined current value; and
determining a sum of time lengths of the warning signal appearing in the frame time as the duration of the current driving current exceeding the predetermined current value.