Patent ID: 6156487
Filing Date: 2000-12-05
Classification: B82Y,G03F,G11B

Abstract:
A process for forming a pole tip in a data transducer write head comprising:providing a substrate;forming a seed layer covering the substrateapplying a first photoresist layer overlying said substrate;applying an intermediate layer overlying said substrate;applying a second photoresist layer overlying said intermediate layer, said second photoresist layer being relatively thinner than said first photoresist layer;patterning said second photoresist layer to produce an opening thereinetching said intermediate layer utilizing said opening as a mask;further etching said first photoresist layer with reactive ion etching to expose the seed layer through said opening utilizing said intermediate layer as another mask so as to transfer the opening defined in the second photoresist layer to an opening in the first photoresist layer;forming said pole tip within said opening etched in said first photoresist layer; andremoving said first and second photoresist layers and said intermediate layer to expose said pole tip.