Patent ID: 7129539
Filing Date: 2006-10-31
Classification: G11C,H01L

Abstract:
1. A semiconductor storage device comprising: a field effect transistor which has a gate electrode formed on a semiconductor substrate via a gate insulator and a pair of source/drain diffusion regions formed on portions of a semiconductor substrate surface corresponding to opposite sides of the gate electrode; memory function bodies which are provided on opposite sides of the gate electrode, respectively, and each of which comprises a charge retention part made of a material having a function of storing electric charge, and an anti-dissipation dielectric having a function of preventing dissipation of stored charge; a coating film which is made of a dielectric formed on the semiconductor substrate in such a manner as to cover an upper surface and side surfaces of the gate electrode and the memory function bodies that are integrated together; an interlayer insulator which is formed on and in contact with the coating film; and contact members which extend vertically through the interlayer insulator and the coating film on the source/drain diffusion regions so as to be electrically connected to the source/drain diffusion regions, respectively, wherein the coating film and the interlayer insulator are made of materials which are selectively etchable to each other.