Patent ID: 8747556

Claim:
An assembly for a vapor deposition process, comprising: a showerhead plate having a top surface, a bottom surface, and a radius extending from the center to the outer edge of the showerhead plate, wherein the showerhead plate has: a first plurality of holes that extend through the showerhead plate and are in fluid communication with the top surface and the bottom surface, and are positioned within a first zone extending from the center of the showerhead plate to about 25% of the radius of the showerhead plate, wherein each hole of the first plurality has a diameter of less than 0.1 inches, and the diameter of holes of the first plurality increases radially extending from the center of the showerhead plate; and a second plurality of holes that extend through the showerhead plate and are in fluid communication with the top surface and the bottom surface, and are positioned within a second zone extending from about 25% of the radius of the showerhead plate to about the outer edge of the showerhead plate, wherein each hole of the second plurality has a diameter of greater than 0.1 inches, and the diameter of holes of the second plurality increases radially extending towards the outer edge of the showerhead plate; an inlet manifold assembly disposed above the showerhead plate, the inlet manifold assembly having an annular channel encompassing a centralized channel, wherein the centralized channel extends through the inlet manifold assembly, and the inlet manifold assembly further has injection holes extending from the annular channel, through a sidewall of the centralized channel, and to the centralized channel, wherein the centralized channel is in fluid communication with the first plurality of holes and the second plurality of holes; and a water box contacting the inlet manifold assembly and the showerhead plate.