White LED Light Source Device and LED Backlight Using the Same

摘要

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.