Patent ID: 8531382
Filing Date: 2013-09-10
Classification: F21K,G09G

Abstract:
1. A backlight device for emitting illumination light outward, comprising: white light-emitting diodes for emitting white light, the white light-emitting diodes having chromaticity within a first chromaticity region of a color space; two types of light-emitting diodes selected from three types of red, green, and blue light-emitting diodes for emitting red light, green light, and blue light, respectively; and a lighting control portion for controlling lighting/driving of each of the white light-emitting diodes and the two types of light-emitting diodes to produce the illumination light of the backlight device of chromaticity in a second chromaticity region of the color space, the second chromaticity region defined as a line connecting a first chromaticity point and a second chromaticity point, wherein the first chromaticity region of the color space is outside of the second chromaticity region and is bounded by