Patent ID: 6543981
Filing Date: 2003-04-08
Classification: H01L,Y10S

Abstract:
A transport passage for transport of a wafer between a first chamber and a second chamber, comprising:an air flow supply for directing air flow from a top region towards a bottom region of the first chamber, the air flow supply generated by a first chamber fan; a moveable door, for opening and closing an aperture defined on a wall between the first chamber and the second chamber, the moveable door located between the top region and the bottom region, the aperture defining a passage between the first chamber and the second chamber; a cowl partially enclosing the moveable door, the cowl located in a proximity region of the moveable door, the cowl having a top portion that is more proximate to the top region of the first chamber and a bottom portion that is more proximate to the bottom region of the first chamber; and a fan disposed in proximity to the bottom portion of the cowl so as to locally augment the air flow from the first chamber fan around the proximity region and through the partial enclosure defined by the cowl.