Patent ID: 9553202
Date: 2017-01-24
CPC Classifications: H01L

Claim:
1. A method for manufacturing a semiconductor device, comprising the steps of: forming a first transistor including a single crystal semiconductor as a channel; forming a first insulating film over the first transistor; forming an oxide semiconductor film over the first insulating film; forming a first conductive film over the oxide semiconductor film; forming an inorganic film over the first conductive film; forming a first mask over the inorganic film; forming a second mask including the inorganic film by processing the inorganic film using the first mask as a mask; forming an opening in the first conductive film, the oxide semiconductor film, and the first insulating film using the second mask as a mask; and forming a second conductive film which penetrates the first conductive film, the oxide semiconductor film, and the first insulating film in the opening, wherein the first mask is a resist mask, wherein the oxide semiconductor film and the first conductive film are included in a second transistor, and wherein the second conductive film is electrically connected to the first transistor and the second transistor.