Surface illuminator and liquid crystal display having the same

Abstract

The invention relates to a surface illuminator and a liquid crystal display having the same and provides a low-cost surface illuminator and a liquid crystal display having the same. A liquid crystal display includes a liquid crystal display panel provided by sealing a liquid crystal between a pair of substrates and a backlight unit serving as a surface illuminator. The backlight unit has a light exit surface from which light in a color reproduction range defined by a plurality of chromaticities exit, a light guide having a light guide region for guiding light to the light exit surface, an LED light source having a first group of light sources emitting light having a wavelength shorter than a desired wavelength toward the light guide region and a second group of light sources emitting light having a wavelength longer than the desired wavelength, and a light source driving circuit having first and second driving portions for driving the first and second groups of light sources.

Dependencies are inferred from the claim text.