Patent ID: 7276742

Claim:
A compound semiconductor light emitting device comprising: an insulative substrate; a semiconductor layer including a plurality of semiconductor thin film layers laminated on one surface of the insulative substrate to form an active layer, a first semiconductor thin film layer being closest to the insulative substrate; a first electrode provided on a top surface of the semiconductor layer a second electrode provided on a rear surface of the insulative substrate; an exposure region formed by removing semiconductor on the first semiconductor thin film layer so that the first semiconductor thin film layer to be connected to the second electrode is exposed; a through hole penetrating the insulative substrate and the first semiconductor thin film layer in the exposure region; an electrical path formed in the through hole to electrically connect the first semiconductor thin film layer and the second electrode; and an ohmic electrode which is electrically connected to the electrical path formed in the through hole and which makes ohmic contact to the first semiconductor thin film layer located in the exposure region.