Patent ID: 6706600
Filing Date: 2004-03-16
Classification: H01L,Y10S

Abstract:
A method of fabricating a semiconductor device having a plurality of transistors, some of the transistors having split gates including respective control gates and floating gates, other ones of the transistors having control gates without floating gates, the method comprising:forming the control gates of the transistors, the control gates having respective sidewalls; forming an oxide film and a nitride film covering the sidewalls of the control gates and spaces therebetween; forming floating gates on the covered sidewalls of the control gates; forming a bottom anti-reflective coating so as to be disposed in the spaces between two opposing one of the control gates and to expose unwanted ones of the floating gates formed on the covered sidewalls of the control gates; and removing the unwanted ones of the floating gates, using the bottom anti-reflective coating as a mask.