Patent ID: 7297988
Filing Date: 2007-11-20
Classification: H01L

Abstract:
1. A flip chip type nitride semiconductor light emitting device comprising: p-type and n-type semiconductor layers; an active layer formed between the p-type and n-type semiconductor layers; an ohmic contact layer formed on the p-type nitride semiconductor layer; a light-transmitting conductive oxide layer formed on the ohmic contact layer; a highly reflective metal layer formed on the light-transmitting conductive oxide layer; and a diffusion prevention layer formed between the light-transmitting conductive oxide layer and the highly reflective metal layer, wherein the highly reflective metal layer is made of at least one selected from a group including Al, Ag and alloys thereof, and the diffusion prevention layer is made of a material selected from a group consisting of Cu, Mo, V, W and alloy thereof including Ti—W alloy.