Image display device

摘要

In a liquid-crystal display device including an edge-light-scheme-employed backlight device, it is implemented to reduce its power consumption while maintaining its excellent picture-quality. The present invention is applied to the backlight device with a plurality of edge-light-scheme backlight cells in a matrix-like manner including a LED light-source, and a light-guiding plate for emitting light. The intensity of light from a backlight cell positioned at a screen's peripheral portion is so controlled as to be made lower than the intensity of light from a backlight cell at a central portion. The light intensity of a backlight cell having a LED light-source adjacent to a first edge portion of the illumination surface of the backlight device is so controlled as to be made higher than the light intensity of a backlight cell adjacent to a second edge portion opposed to the first edge portion.

主权项

1. An image display device including a display panel, and a backlight for illuminating said display panel with light, said image display device, comprising:
a plurality of edge-light-scheme backlight cells including both a plurality of light sources respectively arranged to emit light in a first direction, and a light-guiding plate for introducing light from a backlight control unit for respectively controlling intensity of said light from each of said backlight cells by controlling light intensity of each of the plurality of light sources; wherein the plurality of backlight cells are arranged in a matrix-like manner, said backlight control unit controlling intensity of light from a backlight cell positioned at a screen's peripheral portion in such a manner that said intensity of said light becomes lower than intensity of light from a backlight cell positioned at a screen's central portion, and the backlight control unit being configured to control light intensity of light at one of the backlight cells adjacently positioned on a first end portion of the light panel which is located upstream along the first direction to become higher than light intensity of another one of the backlight cells adjacent to a second portion opposed to the first end portion.