Patent ID: 9082864
Filing Date: 2015-07-14
Classification: H01L

Abstract:
1. A semiconductor device comprising: a gate electrode; a gate insulating film; a pair of electrodes; and an n-type oxide semiconductor film overlapping with the gate electrode with the gate insulating film interposed therebetween and in electrical contact with the pair of electrodes, wherein the n-type oxide semiconductor film contains an n-type oxide semiconductor material and a p-type oxide semiconductor material, wherein the n-type oxide semiconductor film comprises a channel formation region of a transistor, the channel formation region overlapping with the gate electrode, and wherein a ratio of a concentration of atoms other than oxygen forming the p-type oxide semiconductor material over the sum of the concentration of atoms other than oxygen forming the p-type oxide semiconductor material and a concentration of atoms other than oxygen forming the n-type semiconductor material is comprised between 0.027 and 0.305.