Patent ID: 9660092
Date: 2017-05-23
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a gate electrode; a gate insulating film over the gate electrode; an oxide semiconductor film over the gate insulating film; a source electrode and a drain electrode in electrical contact with the oxide semiconductor film; and an inorganic insulating film over the oxide semiconductor film, the source electrode, and the drain electrode, wherein the gate insulating film comprises at least a silicon oxynitride film and a first oxygen release type oxide film over the silicon oxynitride film, wherein the inorganic insulating film comprises at least a second oxygen release type oxide film and a metal oxide film over the second oxygen release type oxide film, wherein the metal oxide film comprises aluminum oxide, wherein the metal oxide film comprising the aluminum oxide has a film density of higher than or equal to 3.2 g/cm wherein an amount of oxygen released from each of the first oxygen release type oxide film and the second oxygen release type oxide film, which is converted to oxygen atoms is greater than or equal to 1×10 wherein the oxide semiconductor film is formed in contact with the first oxygen release type oxide film.