Patent ID: 9093033
Filing Date: 2015-07-28
Classification: G09G

Abstract:
1. An image display device provided with a display panel including a plurality of display elements, the device having a full display function for displaying an image based on an externally provided input image on the entire display panel and a partial display function for displaying an image based on the input image in a partial region of the display panel, the device comprising: a backlight including a plurality of light sources; an emission luminance calculation section for dividing the input image into the same number of areas as the light sources and obtaining an emission luminance which is a luminance upon emission of the light source corresponding to each area; a display luminance calculation section for calculating a display luminance for each area on the basis of the emission luminance of the light source corresponding to that area and emission luminances of light sources corresponding to predetermined areas surrounding that area, the display luminance being a luminance achievable upon display in that area; a display position information acquisition section for acquiring display position identification data to identify a display region in which the image based on the input image should be displayed when performing partial display; a correction filter having correction values stored therein in association with the areas or the display elements, the correction values being values determined in accordance with the display region identified by the display position identification data; a display data calculation section for calculating display data for controlling a light transmittance of each display element, on the basis of the input image, the display luminance, and the correction values stored in the correction filter; a panel driver circuit for outputting a light transmittance control signal for controlling the light transmittance of each display element to the display panel, on the basis of the display data; and a backlight driver circuit for outputting a luminance control signal for controlling the luminance of each light source to the backlight, on the basis of the emission luminance, wherein