Patent ID: 7572647
Filing Date: 2009-08-11
Classification: C23C,H01J,H01L

Abstract:
1. A method of depositing a layer with an HDP/CVD semiconductor processing chamber, the method comprising: determining a value of at least one HDP/CVD deposition parameter to deposit the layer on a semiconductor wafer; determining an etch rate of a protective chamber coating disposed on a surface of a structure inside the chamber based on the value of the HDP/CVD deposition parameter; determining a value of a chamber season parameter to form the protective chamber coating on the surface of the structure inside the chamber in response to the etch rate; seasoning the chamber to form the protective coating on the surface of the structure inside the chamber based on the value of the chamber season parameter; inserting a semiconductor wafer into the chamber; applying the HDP/CVD process to deposit the layer on the wafer based on the value of the HDP/CVD deposition parameter, wherein the protective coating is etched from the surface of the structure inside the chamber when the layer is deposited on the wafer; stopping the HDP/CVD process before the protective coating is removed from the surface and a portion of the surface of the structure is exposed; and removing the wafer from the chamber.