Patent ID: 6465346
Filing Date: 2002-10-15
Classification: H01L

Abstract:
A method of forming a conducting line of a semiconductor device, the method comprising the steps of:(a) sequentially forming a conductive layer, a capping insulation layer, an aluminum oxide layer and an anti-reflective coating layer on a semiconductor substrate; (b) depositing photoresist on the anti-reflective coating layer and forming a photoresist pattern using exposure and development techniques; (c) anisotropically dry-etching the anti-reflective coating layer and the aluminum oxide layer using the photoresist pattern as a mask, thereby forming an anti-reflective coating layer pattern and an aluminum oxide layer pattern; (d) removing the photoresist pattern; (e) anisotropically dry-etching the capping insulation layer using the anti-reflective coating layer pattern and the aluminum oxide layer pattern as a mask, thereby forming a capping insulation layer pattern; and (f) anisotropically dry-etching the conductive layer using the aluminum oxide layer pattern and the capping insulation layer pattern as a mask, thereby forming a conductive layer pattern.