Patent ID: 7510624
Filing Date: 2009-03-31
Classification: C23C,H01J

Abstract:
1. A gas distributor for use in a semiconductor processing chamber, the gas distributor comprising: a gas inlet; a gas outlet; a first cylindrical stem section extending from the gas inlet to a spiral thread section, the first cylindrical stem section being characterized by a first diameter and the spiral thread section being characterized by an inner diameter and an outer diameter, the outer diameter being greater than the inner diameter and the first diameter; a body having a gas deflecting surface that extends radially outward and a lower face disposed on an opposite side of the body from the gas deflecting surface; a second cylindrical stem section extending from the spiral thread section to a lateral seat, the lateral seat disposed between the second cylindrical stem section and the gas deflecting surface, wherein the lateral seat is adjacent to the gas deflecting surface and wherein a periphery of the lateral seat is characterized by a third diameter greater than the outer diameter; and a gas passageway that extends from the gas inlet through the first cylindrical stem section, the spiral thread section, the second cylindrical stem section, and the body to the gas outlet.