Dimming method and dimming device for backlight module

摘要

A dimming method and dimming device for a backlight module are provided. The dimming method includes the following steps. Light distribution information of a plurality of light sources of the backlight module corresponding to a display panel is provided. According to the light distribution information of each of the light sources, a plurality of light contribution ratios of the light sources corresponding to a plurality of different positions of the display panel are obtained respectively. According to the light contribution ratios corresponding to the different positions, the needed intensity of each of the light sources is determined respectively.

主权项

1. A dimming method for a backlight module, comprising:
according to a plurality of light distribution information of a plurality of light sources of the backlight module which are corresponding to each of different positions of the display panel, respectively obtaining a plurality of light contribution ratios of the light sources corresponding to the different positions of the display panel; and according to the light contribution ratios corresponding to the different positions, respectively determining a needed intensity of each of the light sources, wherein, the step of determining the needed intensity of each of the light sources comprises:
(i) for each of the different positions of the display panel and while satisfying a target brightness value of the position, respectively obtaining possible needed intensities of at least two selected light sources according to the light contribution ratio obtained at the position; and(ii) for each of the light sources, determining the needed intensity of the light source according to the possible needed intensities of the light source respectively obtained for the different positions.