Patent ID: 6169029
Filing Date: 2001-01-02
Classification: G03F,H01L

Abstract:
A process for fabricating a metal pattern on a wafer surface, comprising the steps of: (a) depositing a metal layer on a wafer surface; (b) depositing an inorganic anti-reflective layer on top of said metal layer; (c) depositing a partitioning layer on top of said inorganic anti-reflective layer, said partitioning layer is deposited from a first organic material that will not react with said inorganic anti-reflective layer to form an immovable material; (d) depositing an organic anti-reflective layer on said partitioning layer, said photoresist being of a third organic material different from said first and second material; (e) depositing a photoresist on said organic anti-reflective layer; (f) performing a photolithography process to form a photoresist pattern using a deep UV technology in conjunction with a photomask; (g) removing said organic anti-reflective layer and said partitioning layer not covered by the photoresist using an oxide etcher; (h) removing said inorganic anti-reflective layer and said metal layer also not covered by the photoresist using a metal etcher; and (i) removing all the layers above said metal layer to reveal a metal pattern.