Method and related device for adjusting brightness of backlight module

Abstract

The invention discloses a backlight module brightness adjusting method and a related device. When it is determined that the brightness of a backlight module needs to be adjusted, first, the type of a display frame is determined; according to the type of the display frame, the number of light-emitting devices needing to the turned off and target driving current are determined; according to the determined number, the light-emitting devices with the same number are controlled to be turned off, and the driving current of a backlight source drive is controlled according to the determined target driving current. Therefore, through the method, the light-emitting brightness of the backlight module is controlled by having control over the number of the light-emitting devices and the magnitude of the driving current, when different frame information is displayed, the brightness of the backlight module is reduced to different extents, and on the premise that a display effect is guaranteed, energy and electricity are saved by reducing the electricity consumption of the backlight module; compared with a method for only adjusting the driving current of the backlight module, the light-emitting brightness of the backlight module can be accurately controlled, and the brightness adjustment range can be broadened.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method and a related device for adjusting the brightness of a backlight module. Background technique [0002] At present, due to the increasing importance of environmental protection awareness, the demand for energy conservation is also receiving increasing attention. The liquid crystal display commonly used in daily life is a passive light-emitting device, which is composed of a display module, that is, a liquid crystal display screen and a backlight module. Among them, the power consumption of the backlight module accounts for most of the power consumption of the entire liquid crystal display. [0003] And existing liquid crystal display generally has the setting of power saving, after the picture of liquid crystal display stops setting time, its backlight module and timing controller can be closed, but, in order to avoid directly shutting down because of short-term picture ...

AI Technical Summary

Problems solved by technology

[0003] And existing liquid crystal display generally has the setting of power saving, after the picture of liquid crystal display stops setting time, its backlight module and sequence controller can be closed, but, in order to avoid directly shutting down because of short-term picture stop Display, usually the time for this control to turn off the display is set relatively long, the effect of saving power on the whole will not be as expected, and the operation of directly turning off the display is not applicable to the situation where the display is displaying a picture

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