Patent ID: 9577005
Date: 2017-02-21
CPC Classifications: B82Y,H01L,Y02E,Y10S

Claim:
1. A method of manufacturing a semiconductor device, comprising: forming an active region in a semiconductor layer and forming connection regions by metalizing the semiconductor layer in an island shape isolated from the active region; forming semiconductor elements using the active region; forming an insulation film that covers one main surface side of the semiconductor layer; forming contacts that penetrate the insulation film selectively in portions according to necessity among portions that reach the semiconductor elements or the connection regions; forming electrodes with parts connected to the contacts at positions at which the semiconductor elements face the connection regions via the insulation film; providing counter electrodes at positions facing the electrodes; and between an electrode according to necessity among the plurality of electrodes and the counter electrode disposed to face this electrode, providing a tantalum oxide layer having conductivity by diffusing at least one of materials of this electrode and this counter electrode into the tantalum oxide.