Patent ID: 6596649
Filing Date: 2003-07-22
Classification: C23C,H01J,H01L

Abstract:
A method for supplying a gas used in a semiconductor process, comprising:flowing a gas in a flow direction toward a first diffuser arranged in a dispersion head; diffusing the gas a first time within the dispersion head by dispersing the gas along side directions different than the flow direction by contacting the gas and the first diffuser; guiding a portion of the first diffused gas through an outlet of the dispersion head and toward a work piece arranged in a chamber; diffusing a remaining portion of the first diffused gas a second time by contacting the gas and a second diffuser disposed between the first diffuser and the work piece, by dispersing the gas along side directions different than the flow direction; and guiding a portion of the second diffused gas through the outlet of the dispersion head and toward the work piece arranged in the chamber.