Patent ID: 6544882
Filing Date: 2003-04-08
Classification: H01L,Y10S

Abstract:
A method of forming a FSG dielectric layer over a conducting patterned layer formed in aluminum-copper and capped with a TiN ARC layer comprising the steps of:providing a semiconductor substrate having said aluminum-copper layer blanket deposited thereon and said aluminum-copper layer capped with a TiN ARC layer; exposing said TiN ARC layer to a plasma containing N2 and H2 at a pressure of between about 1 mTorr and 10 Torr, a flow rate of N2 between about 100 and 3000 sccm, a flow rate of H2 between about 50 and 500 sccm and applied rf power between about 100 and 500 Watts; after exposure of said TiN ARC layer to said plasma containing N2 and H2, forming by etching a pattern in said aluminum-copper and said TiN ARC layer; and depositing said FSG dielectric layer.