Patent ID: 6995401

Claim:
A light emitting device comprising: a light emitting layer portion composed of a compound semiconductor, and has a double heterostructure in which a first-conductivity-type cladding layer, an active layer and a second-conductivity-type cladding layer are stacked in this order; and an oxide transparent electrode layer covering the main surface of the second-conductivity-type cladding layer, and being provided for applying therethrough emission drive voltage to the light emitting layer portion; further comprising: a bonding pad composed of a metal and disposed on the oxide transparent electrode layer, and having an electrode wire for current supply bonded thereto; and a cushion layer disposed between the second-conductivity-type cladding layer and the oxide transparent electrode layer, and comprising a compound semiconductor layer having a dopant concentration lower than that of the second-conductivity-type cladding layers; wherein the second-conductivity-type cladding layer is composed of (Al x Ga 1-x ) y In 1-y P (where 0≦x≦1, 0≦y≦1) and the cushion layer is composed of one of selected from AlGaAs, GaP, GaAsP and AlGaAsP.