Patent ID: 7303860
Filing Date: 2007-12-04
Classification: G03F

Abstract:
1. A method of forming a micro-fabricated structure, said method comprising the steps of: forming a first pattern in a first photo-resist; removing a portion of said first photo-resist that is associated with a negative of said first pattern; transferring said first pattern in said first photo-resist to a first mask layer to provide a patterned first mask layer by removing a portion of said first mask layer to provide exposed portions of a second mask layer; depositing a second photo-resist on said exposed portions of said second mask layer; forming a second pattern in the second photo-resist; transferring said second pattern in said second photo-resist to said second mask layer; transferring said first pattern from said first mask layer to said second mask layer; transferring said first pattern from said second mask layer to a target layer; transferring said second pattern from said second mask layer to the target layer; and removing said second mask layer.