Patent ID: 7164167
Filing Date: 2007-01-16
Classification: B82Y,G11C,H01L

Abstract:
1. A semiconductor storage device comprising: a first conductivity type region formed in a semiconductor layer; a second conductivity type region formed in the semiconductor layer in contact with the first conductivity type region; a memory functional element disposed on said semiconductor layer across the boundary of said first and second conductivity type regions; and an electrode provided in contact with the memory functional element and on the first conductivity type region via an insulation film, wherein the memory functional element or the sidewall insulation film is a film having the function of accumulating or trapping charges or the function of holding a charge polarized state, which is an insulator film including a silicon nitride film; an insulator film having therein a conductor film or a semiconductor layer; an insulator film having therein one or more dots made of a conductor or a semiconductor; or a single layer or a lamination layer of an insulator film including a ferroelectric film in which internal charges are polarized by an electric field and its state is held.