Patent ID: 9022715
Filing Date: 2015-05-05
Classification: H01L

Abstract:
1. A load lock chamber, comprising: a first circular housing; and a second circular housing disposed within and movable relative to the first circular housing, the second circular housing comprising a plurality of slots defining a plurality of discrete regions, wherein the second movable housing comprises an n number of discrete regions, n being equal to or greater than 4, wherein n−2 of the plurality of discrete regions are positioned in a transfer region between a location of the first and the second chambers, each of the slots comprising a conveyor device for transfer of a substrate thereon, wherein at least a portion of the plurality of discrete regions are in selective fluid communication with one of at least two vacuum pumps coupled to the first circular housing based on the angular position of the second circular housing relative to the first circular housing providing a staged vacuum within the first circular housing, wherein each of the plurality of discrete regions comprise a partition coupled to a radially extending sidewall having the slot therebetween, and wherein the partition and the sidewalls contain a void therebetween.