Patent ID: 7554124
Filing Date: 2009-06-30
Classification: H01L

Abstract:
1. A nitride-based compound semiconductor light emitting device, comprising: a first conductive substrate; a first ohmic electrode formed on the first conductive substrate; a first bonding metal layer formed on the first ohmic electrode; a second bonding metal layer bonded to the first bonding metal layer; a second ohmic electrode formed on the second bonding metal layer; and a nitride-based compound semiconductor layer formed on the second ohmic electrode, wherein the nitride-based compound semiconductor layer comprises a P-type layer, a light emitting layer and an N-type layer; and a concave groove portion or a concave-shaped portion formed in each of two opposing side surfaces of the nitride-based compound semiconductor light emitting device, the concave groove portion or the concave-shaped portion extending at least from the nitride-based compound semiconductor layer to the second bonding metal layer such that a surface area of said nitride-based compound semiconductor layer on a side of said second ohmic electrode is smaller than a surface area on a side opposite to said second ohmic electrode.