Patent ID: 11932939
Assignee: APPLIED MATERIALS, INC.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 14:
15. A lid assembly kit for a substrate processing chamber, comprising:
a lid plate comprising an upper surface and a contoured bottom surface, the upper surface having a central opening and the contoured bottom surface having a first portion that extends downwardly and outwardly from the central opening to a peripheral portion of the lid plate and a second portion that extends radially outward along the peripheral portion of the lid plate, the lid plate having an upper flange extending radially outward from the lid plate and one or more channels formed through the lid plate from the upper surface of the lid plate to the second portion of the contoured bottom surface; and
a gas distribution plate configured to be coupled to the lid plate such that the contoured bottom surface of the lid plate extends to and contacts the gas distribution plate, wherein the gas distribution plate has a plurality of apertures disposed therethrough such that the only pathway from the central opening to a region beneath the gas distribution plate is through the plurality of apertures when the gas distribution plate is coupled to the lid plate, wherein the gas distribution plate includes a central portion containing the plurality of apertures, a first stepped portion surrounding the central portion and configured to interface with the second portion of the contoured bottom surface of the lid plate, and a second stepped portion surrounding the first stepped portion and configured to interface with the upper flange of the lid plate.