Patent ID: 7391046

Claim:
A light source module for generating light, comprising: a semiconductor light-emitting element operable to generate light; a nano-particle having a diameter which is smaller than half wavelength of the light generated by the light source module; a fluorescent substance for generating visible light in accordance with the light generated by the semiconductor light-emitting element; and a stratiformly binder which covers a light-emitting surface of the semiconductor light-emitting element and holds the nano-particle and the fluorescent substance, wherein a refractive index of the nano-particles is higher than a refractive index of the binder, wherein the refractive index of the binder is 1.5 or less, wherein the semiconductor light-emitting element generates ultraviolet light, the fluorescent substance generates visible light in accordance with the ultraviolet light generated by the semiconductor light-emitting element, the binder is made of silsesquioxane resin and a side chain of the silsesquioxane resin is a single substituent or a plurality of substituents selected from at least one of non-aromatic substituents, and wherein the silsesquioxane resin is selected from at least one of [RSiO 3/2 ]n or [RSi(OH)O 2/2 ]m[RSiO 3/2 ]n, wherein R is a substituent except an aromatic substituent and m and n is an integer.