Patent ID: 7169663
Filing Date: 2007-01-30
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: (a) forming a cup-shaped lower electrode above a semiconductor substrate formed with semiconductor elements, the lower electrode having a top surface and side surfaces; (b) forming a dielectric film on a surface of the lower electrode, the dielectric film in a region near a boundary between the top surface and each of the side surfaces being thicker than the dielectric film in a lower region of the side surfaces, said region including the top surface and upper region of each of the side surfaces; and (c) forming an upper electrode on the dielectric film, wherein the lower electrode has a cylinder shape with an inner and an outer side surface, and the dielectric film extends from the inner side surface of the cylinder via the top surface to the outer side surface of the cylinder.