SEMICONDUCTOR LIGHT-EMITTING DEVICE, BACKLIGHT, AND COLOR IMAGE DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To achieve wide color reproducibility as the whole of an image without spoiling brightness of the entire image.

SOLUTION: A light source 1 included in a backlight of a color image display device includes a semiconductor light-emitting device, wherein a solid light-emitting element which emits light of a range from the ultraviolet region to the near ultraviolet region and phosphors which are excited by the light from the solid light-emitting element to emit light are combined. The phosphors includes a blue phosphor, a green phosphor, and a red phosphor. The phosphors satisfies one or more of the condition that: an external quantum efficiency of the blue phosphor excited with light having a wavelength of 395 nm is ≥77%; an external quantum efficiency of the green phosphor excited with light having a wavelength of 395 nm is ≥70%; an external quantum efficiency of the red phosphor excited with light having a wavelength of 395 nm is ≥50%.

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