Patent ID: 6452246
Filing Date: 2002-09-17
Classification: H01L

Abstract:
A semiconductor device comprising:a semiconductor substrate having a primary surface; a trench isolation region formed in the primary surface of said semiconductor substrate for separating the surface region of said semiconductor substrate into a plurality of active regions; a conductive film in direct contact with an upper surface of the trench isolation region; an insulating film formed on the primary surface of said semiconductor substrate; and said conductive film formed continuously on said insulating film and directly on said trench isolation region; wherein the entire trench isolation region is depressed by a predetermined depth with respect to the primary surface of said semiconductor substrate; and an obtuse angle is formed between the primary surface of said semiconductor substrate and the side surface of said semiconductor substrate adjoining said trench isolation region, and a curved surface is formed so as to extend from the primary surface to the side surface of said semiconductor substrate.