Patent ID: 7616291

Claim:
A lithographic cell, comprising: a lithographic apparatus; a process apparatus comprising a fill apparatus, or a strip apparatus, or both a fill apparatus and a strip apparatus; and a control unit configured to control both the lithographic apparatus and the process apparatus; the control unit comprising a storage medium having stored therein instructions to cause the lithographic cell to carry out a process comprising the steps of: filling first apertures in a first pattern in a first layer of radiation-sensitive material of a substrate with a first filler; removing the first layer of radiation-sensitive material without removing any of the first filler; applying a second layer of radiation-sensitive material around the first filler; exposing and developing the second layer of radiation-sensitive material to form second apertures in a second pattern therein; and removing the first filler without removing the second layer of radiation-sensitive material to re-expose the first apertures.