DISPLAY DEVICE AND DISPLAY DEVICE DRIVE METHOD

摘要

A display device includes an image display panel whose display is controlled by an image signal, a backlight which includes light sources and lights the image display panel from behind, and a display control section which calculates, based on the image signal, the required luminance value of the backlight for each divided area of the image display panel, calculates a tentative lighting level of each light source based on luminance distribution information for the backlight stored previously and the required luminance values, sets the lighting level of a first light source whose tentative lighting level exceeds an upper limit to the upper limit, determines the lighting level of a second light source whose tentative lighting level does not exceed the upper limit, based on the lighting level of the first light source, luminance distribution information, and required luminance value, and controls the backlight by the lighting levels.

主权项

1. A display device comprising:
an image display panel whose display is controlled on the basis of an image signal; a backlight which includes a plurality of light sources and which lights the image display panel from behind; and a display control section which calculates on the basis of the image signal a required luminance value of the backlight for an area obtained by dividing a display surface of the image display panel, which calculates a tentative lighting level of each of the plurality of light sources on the basis of luminance distribution information for the backlight stored in advance and the required luminance value, which sets a lighting level of a first light source whose tentative lighting level exceeds a determined upper limit value to the upper limit value, which calculates and determines a lighting level of a second light source whose tentative lighting level does not exceed the upper limit value on the basis of the lighting level of the first light source, the luminance distribution information, and the required luminance value, and which controls the backlight by the lighting levels.