Patent ID: 6890447
Filing Date: 2005-05-10
Classification: C03C,C23F,H01C,H01L,H05K

Abstract:
1. A method of forming a noble metal thin film comprising steps of: (a) forming a metal sacrificial film on a substrate having an insulating surface and stacking a hard mask layer of different etching characteristics on the sacrificial film, the metal sacrificial film and the hard mask layer including no organic material; (b) forming an opening having a predetermined pattern through said hard mask layer; (c) etching said metal sacrificial film exposed in said opening and side-etching said sacrificial film over a boundary of the opening of said mask layer by a predetermined amount; (d) depositing a noble metal thin film on a whole surface of said substrate to form a noble metal pattern on the insulating surface in the opening; and (e) dissolving and removing said sacrificial film to expose the insulating surface around the noble metal pattern.