| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a phosphor lamination, in which two types of phosphor layers are laid on a semiconductor light-emitting element, such as an LED or an LD to enhance color rendering properties, with enhanced luminous efficiency and reduced the deterioration of the phosphor layers by adjusting the mixture of a diffusing agent, a binder resin, and a phosphor in each phosphor layer, and to provide a white light-emitting device or the like, using the phosphor lamination. <P>SOLUTION: In this phosphor lamination, a first phosphor layer and a second phosphor layer which includes a phosphor emitting a fluorescent light of a wavelength shorter than that of the fluorescent light emitted by the phosphor in the first phosphor layer are laid on a semiconductor light-emitting element such as an LED or an LD. In the lamination structure, where the first phosphor layer is positioned closer to the semiconductor light-emitting element than the second phosphor layer, the blending quantity or the refractive index of the diffusing agent and/or the binder resin in the first and second phosphor layers is adjusted. <P>COPYRIGHT: (C)2004,JPO |
