Method of manufacturing white light source
First Claim
1. A method for manufacturing white light source including the steps of:
- providing a light emitting diode emitting ultra-violet radiation; and
preparing a matter producing white light when exposed to said ultra-violet radiation emitted by said light emitting diode, said matter consisting essentially of two kinds of phosphors, one of said two kinds of phosphors including a phosphor chosen from a group of phosphors consisting of (Y2−
xEux)O2S with 0<
x≦
0.5 and (Y2−
xEux)Al5O12 with 0<
x≦
0.5.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for manufacturing white light source includes the steps of providing an ultra-violet light as radiation source; and preparing two kinds of phosphors each receiving the ultra-violet light and emitting light of different wavelength. One phosphor is designated to emit light covering two wavelength regimes of three primitive colors, i.e., red light (585-640 nm), green light (500-570 nm) and blue light (430-490 nm), and another phosphor is designated to emit light covering remaining wavelength regime of the three primitive colors. The phosphors are mixed in predetermined ratio such that the lights of different wavelength are combined to provide a white light.
-
Citations
7 Claims
-
1. A method for manufacturing white light source including the steps of:
-
providing a light emitting diode emitting ultra-violet radiation; and
preparing a matter producing white light when exposed to said ultra-violet radiation emitted by said light emitting diode, said matter consisting essentially of two kinds of phosphors, one of said two kinds of phosphors including a phosphor chosen from a group of phosphors consisting of (Y2−
xEux)O2S with 0<
x≦
0.5 and (Y2−
xEux)Al5O12 with 0<
x≦
0.5.- View Dependent Claims (2, 3, 4, 5, 6, 7)
-
Specification