Patent ID: 7732334

Claim:
A method for manufacturing a semiconductor device, comprising the steps of: forming a first film over a substrate on a surface, wherein a wettability of the first film is lower than the surface; applying a solution containing a mask material to the first film thereby forming a mask over the first film by using an ink-jet method; etching selectively the first film with the use of the mask thereby forming at least two low wettability regions and a high wettability region over the surface, wherein the high wettability region is provided between the two low wettability regions; removing the mask; applying a solution containing a conductive material of a gate electrode selectively over the surface to form the gate electrode by using the ink-jet method after removing the mask, and forming a gate insulating film over the gate electrode, wherein a top surface of the high wettability region is lower than top surfaces of the two low wettability regions.