Patent ID: 7249925
Filing Date: 2007-07-31
Classification: B82Y,G03F,H01L,Y10S

Abstract:
1. A substrate transport system for transitioning a substrate from atmospheric pressure to vacuum in a lithography tool, comprising: one or more removable substrate transport cassettes, each removable substrate transport cassette having at least one vent and at least one filter, and each removable substrate transport cassette supporting one substrate forming a cassette-substrate arrangement, wherein said at least one filter and said at least one vent are located opposite a patterned side of the substrate; a box having a base and a lid, wherein said box holds one or more of said cassette-substrate arrangements, forming a box-cassette-substrate arrangement; a first storage rack having one or more shelves for holding said box-cassette-substrate arrangement; and an entry-exit module having a loadlock that transitions said cassette-substrate arrangement from atmospheric pressure to vacuum, said at least one vent and said at least one filter restricting particles within said loadlock from entering said cassette-substrate arrangement and reaching a surface of the substrate.