Patent ID: 6477980
Filing Date: 2002-11-12
Classification: C23C,H01J,Y10T

Abstract:
A gas inlet manifold for a plasma chamber, comprising:a back wall perforated by a gas inlet orifice, wherein the back wall has a surface that is generally rectangular with four sides; a gas distribution plate perforated by a number of gas outlet orifices, wherein the gas distribution plate is spaced away from the back wall and has a surface facing said surface of the back wall that is generally rectangular with four sides; and a suspension that encircles a region within the gas inlet manifold extending between the back wall and the gas distribution plate, wherein the gas inlet orifice and the gas outlet orifices are in fluid communication with said region; wherein the suspension comprises four generally rectangular sheets; wherein each sheet has a first end attached to and abutting the back wall and a second end attached to and abutting the gas distribution plate so that each of the four sheets extends between a corresponding one of the sides of said surface of the back wall and a corresponding one of the sides of said surface of the gas distribution plate; and wherein substantially all of each sheet is sufficiently thin so as to be flexible.