Applied Materials, Inc.
Gas distribution plate with high aspect ratio holes and a high hole density

Abstract:

A gas distribution plate for a showerhead assembly of a processing chamber may include at least a first plate and second plate. The first plate may include a first plurality holes each having a diameter of at least about 100 um. The second plate may include a second plurality of holes each having a diameter of at least about 100 um. Further, each of the first plurality of holes is aligned with a respective one of the second plurality of holes forming a plurality of interconnected holes. Each of the interconnected holes is isolated from each other interconnected holes.