Patent ID: 7015134

Claim:
A method of providing a semiconductor device, the semiconductor device including a first layer desired to be etched, the method comprising the steps of: (a) providing an anti-reflective coating layer having antireflective properties, wherein the anti-reflective coating layer comprises a layer of SiON having a thickness of less than about 500 Angstroms (Å) deposited on the first layer; (b) patterning a resist layer, the resist layer including a pattern having a plurality of apertures therein for etching a first portion of the first layer, wherein the first portion corresponds to a memory region of the semiconductor device; (c) etching the first portion of the first layer; (d) removing the resist layer utilizing a plasma etch, the anti-reflective coating layer being resistant to the plasma etch; (e) patterning a second resist layer, the second resist layer including a pattern having a plurality of apertures therein for etching a second portion of the first layer, wherein the second portion corresponds to a logic region of the semiconductor device; and (f) etching the second portion of the first layer.