White LED light source device and LED backlight using the same

Details White LED light source device and LED backlight using the same White LED light source device and LED backlight using the same

2007-12-04

2010-10-12

Alavi, Ali (Department: 2875)

Illumination

Plural light sources

Particular wavelength

C362S084000, C362S097100, C362S612000, C257S098000

Reexamination Certificate

active

07810947

ABSTRACT:
A white LED light source device and an LED backlight using the white LED light source can produce, among other features, white light with sufficient luminous intensity, uniform color tone, and high luminous utilization efficiency. A light path for producing white light with favorable color mixture can be shortened. The white LED light source device can be configured to include a bluish green LED lamp which can emit bluish green light by the combination of a blue LED device and a green phosphor material and a purple LED lamp which can emit purple light by the combination of a blue LED device and a red phosphor material. The bluish green light from the bluish green LED lamp and the purple light from the purple LED lamp are subjected to additive color mixture to produce white light with a spectrum containing three primary color wavelength components.

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