Patent ID: 9691950
Date: 2017-06-27
CPC Classifications: H01L

Claim:
1. A light emitting device comprising: a light emitting element configured to emit visible light; a fluorescent substance excited by light from the light emitting element and configured to emit visible light; a translucent member containing a translucent base material, which provided on the fluorescent substance or configured to contain the fluorescent substance, and provided on the light emitting element; and a film provided on an upper surface of the translucent member, the film including a layer configured as an agglutination of nanoparticles alone, the agglutination of the nanoparticles covering the translucent member on an entirety of the upper surface of the translucent member, the nanoparticles having a different refractive index from the base material, the nanoparticles being formed from one of silicon oxide, aluminum oxide, aluminum nitride, magnesium oxide, antimony oxide, titanium oxide, zirconium oxide, calcium oxide, boric acid, zinc oxide, cerium oxide, indium oxide, tin oxide, aluminum hydroxide, magnesium hydroxide, barium sulfate, magnesium carbonate, barium carbonate, calcium silicate, barium titanate, diamond, talc, kaolin, mica, clay minerals, gold and silver.