Patent ID: 6121072
Filing Date: 2000-09-19
Classification: H01L

Abstract:
A method of fabricating a nonvolatile memory device having a substrate, the method comprising the steps of:forming a plurality of bit lines in the substrate;forming a plurality of field oxide layers on the substrate substantially perpendicular to the bit lines;forming a gate insulating layer over a surface of the substrate including the bit lines;forming a plurality of floating lines on the gate insulating layer between the bit lines;forming a dielectric layer over the surface of the semiconductor substrate including the floating lines and the gate insulating layer;forming a plurality of word lines between the field oxide layers substantially perpendicular to the bit lines;forming a sidewall spacer at both sides of the word lines;selectively removing the dielectric layer and the floating lines using the word lines and the sidewall spacer as masks to form a plurality of floating gates;forming a tunneling layer at both sides of the floating gates; andforming a plurality of program lines between each of the adjacent bit lines.