Patent ID: 7148150
Filing Date: 2006-12-12
Classification: H01L

Abstract:
1. A method of forming a metal line layer in a semiconductor device, comprising the steps of: depositing a metal line layer on a semiconductor structure; forming an insulating film and a photoresist material pattern on the metal line layer in a sequential manner; patterning the insulating film by using the patterned photoresist material; patterning the metal line layer by using the photoresist material pattern and the patterned insulating film as a mask, wherein a metal polymer is formed on the patterned insulating film; removing the photoresist material pattern; and removing the patterned insulating film from the metal line layer by an isotropic etching process so that the metal polymer is removed together with the patterned insulating film, thereby exposing a top surface of the metal line layer.