Patent ID: 8975678
Filing Date: 2015-03-10
Classification: H01L

Abstract:
1. A semiconductor device comprising: (a) a semiconductor substrate; (b) a capacitor element formed over the substrate, the capacitor element (b) including: (b1) a lower electrode formed over the substrate, (b2) a capacitor insulating film formed over the lower electrode, and (b3) an upper electrode formed over the capacitor insulating film, wherein the upper electrode has a first electrode portion, a second electrode portion and a third electrode portion, wherein the first electrode portion is formed so as to extend in a first direction along a surface of the semiconductor substrate, wherein the second electrode portion is formed so as to extend along a direction perpendicular to the surface of the semiconductor substrate, and wherein the third electrode portion is formed above the lower electrode and extends in the first direction; (c) a plurality of first metal silicide portions formed at a surface of the upper electrode, wherein the plurality of first metal silicide portions include a first silicide portion of the third electrode portion and a second silicide portion of the first electrode portion; and (d) between the first silicide portion and the second silicide portion, a first insulating film formed over the upper electrode, wherein the first insulating film extends along a surface of the third electrode portion in the first direction and covers a part of the third electrode portion, wherein a length of the upper electrode in the first direction is larger than that of the lower electrode in the first direction, a length of the upper electrode in a second direction along the surface of the semiconductor substrate and intersecting the first direction is smaller than that of the lower electrode in the second direction, and wherein electrical connections to the upper and lower electrodes are made only at longitudinal end portions of the upper and lower electrodes where the upper and lower electrodes are not overlapped with each other in plan view.