Patent ID: 7470623
Filing Date: 2008-12-30
Classification: C09G,H01L

Abstract:
1. A method for forming a platinum pattern comprising: forming an interlayer insulating pattern having a contact hole on a semiconductor substrate; forming a metal adhesion layer on the interlayer insulating pattern; forming a platinum layer on the metal adhesion layer; and performing a first platinum-chemical mechanical polishing (CMP) process on the platinum layer using a platinum-CMP solution until the metal adhesion layer is exposed, thereby forming a platinum pattern as a lower electrode, the platinum-CMP solution being substantially free of abrasive and comprising an alkali aqueous solution and an oxidizer; performing a second CMP process on the exposed metal adhesion layer using a metal slurry until the interlayer insulating pattern is exposed; and, performing a touch-polishing process on the exposed interlayer insulating pattern using an interlayer insulating pattern slurry.