Patent ID: 9595591
Date: 2017-03-14
CPC Classifications: H01L

Claim:
1. A device comprising: a semiconductor substrate comprising, on one surface side thereof, an island-shaped first active region surrounded by an element isolation insulating film formed in an embedded manner; a gate structure formed on one surface of the semiconductor substrate, wherein the gate structure includes a first part which extends in a first direction in such a way as to cross over the first active region, and a second part which extends in a second direction intersecting the first direction, and which is disposed on the element isolation insulating film in such a way as to connect to the first part, wherein the first direction is parallel to the one surface of the semiconductor substrate and the second direction is parallel to the one surface of the semiconductor substrate; at least a part of the first part that is located on the first active region employs a first structure in which a high dielectric-constant film, a first electrode film containing a metal, and a second electrode film different from the first electrode film are successively laminated; and the second part employs a second structure which includes the second electrode film but does not include the high dielectric-constant film or the first electrode film.