High Volume Manufacturing of Nano Imprint Lithography produced devices: addressing the stamp supply challenge

摘要

In order to realize industrial level manufacturing using Nano Imprint Lithography, one of the key challenges is to supply stamps for the high volume machines. The master stamp is typically time consuming to produce and thus very expensive. It is therefore preferable to produce the maximum amount of replicated stamp from a master and to ensure that each stamp replica can deliver as many imprints as possible without losing yield.rnCurrently, stamp replication is an area of intense development. How to produce a replicated a stamp and how many replicas that can be achieved from each master depend both on feature sizes, pattern density as well as aspect ratio of the structures. Several different techniques can be combined in order to obtain a large number of stamp replicas from each master. The ability to combine several different techniques enables the choice of the ideal technique suited for each structure type.rnThis paper will focus on how to address stamp replication challenges in order to secure an adequate supply of stamps to enable high volume manufacturing with Nano Imprint Lithography. Results will be presented on the number of stamps that can be manufactured from each master as well as the lifetime of each individual stamp.