Patent ID: 7182816
Filing Date: 2007-02-27
Classification: C23C,H01J,Y10S

Abstract:
1. An upper source shield configured to surround a material source and energy source in a removable top portion of a cooled and grounded chamber wall of a semiconductor processing apparatus for protecting said top portion from deposition, comprising: an integral, annular metal element having at least four annular portions including a cylindrical top ring, a frusto-conical sloped ring, a cylindrical bottom ring, and a generally planar mounting element; the frusto-conical sloped ring having an upper smaller end contiguous with the top ring and a larger lower larger end contiguous with the bottom ring; each of the rings having an inner surface and an outer surface; a continuous inner surface formed of the inner surfaces of said top, sloped and bottom rings, and an outer surface formed of the outer surfaces of said top, sloped and bottom rings; and the mounting element is disposed on the outer surface of the sloped ring and having a bottom surface contiguous with a lower portion of the outer surface of the sloped ring and a mating surface contiguous with an upper portion of the outer surface of the sloped ring and configured to form intimate thermal contact and electrical contact with the removable top portion of the cooled and grounded chamber wall and to support the annular element on the chamber wall.