Patent ID: 6498739
Filing Date: 2002-12-24
Classification: G11C,H01L

Abstract:
A method of forming a circuit switch, comprising:forming a non-volatile memory cell, wherein forming the non-volatile memory cell includes: forming a metal oxide semiconductor field effect transistor (MOSFET) in a semiconductor substrate; forming a stacked capacitor according to a dynamic random access memory (DRAM) process flow; and forming a vertical electrical via, wherein forming the vertical electrical via includes coupling a bottom plate of the stacked capacitor through an insulator layer to a gate of MOSFET; forming a wordline coupled to a top plate of the stacked capacitor in the non-volatile memory cell; forming a sourceline coupled to a source region of the MOSFET in the non-volatile memory cell; and forming a bit line coupled to a drain region of the MOSFET in the non-volatile memory cell and coupled to a logic/select circuit.