Control method and control device for screen backlight source, and display device

Abstract

The invention provides a control method and a control device for a screen backlight source, and a display device. A screen comprises a plurality of display regions. The control method aimed at any display region of the screen comprises: determining all possible configuration data for each pixel in the display region to reach preset luminance required by a to-be-displayed frame, the configuration data comprising backlight current and gray scale voltage; using the configuration data of each pixel in the display region, aimed at the backlight current in the same value, as a candidate configuration scheme of the display region; calculating output power consumption of the display region aimed at each candidate configuration scheme; and using the candidate configuration scheme which has the lowest output power consumption as the final configuration scheme of the display region in the to-be-displayed frame. The method determines the configuration data in lowest power consumption in the display region from three dimensions of luminance, backlight current, and gray scale voltage.

Description

technical field [0001] The invention relates to the field of screen display, in particular to a control method, a control device and a display device of a screen backlight source. Background technique [0002] In current liquid crystal displays, the screen is divided into multiple backlight sources, and each backlight source is responsible for the brightness of a display area. A backlight source can only output one kind of backlight current, so the backlight current of all pixels in the display area corresponding to the backlight source must be the same. In the process of screen display, the brightness of each pixel in a display area is different, and the brightness is determined by two factors, the backlight current and the gray scale voltage. Therefore, although the backlight current must be the same between pixels in the same display area, the There is a difference in the gray scale voltage. [0003] In order to reduce the power consumption of the screen, it is necessar...

AI Technical Summary

Problems solved by technology

However, the smallest backlight current does not necessarily mean that the actual output power consumption of the display area is the smallest, because the output power consumption of the display area includes: backlight power consumption determined by the backlight current and logic drive power consumption determined by the grayscale voltage of the pixel , and like the existing technology, only selecting the minimum backlight current obviously cannot truly reflect the minimum output power consumption of the display area

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