Patent ID: 6383330
Filing Date: 2002-05-07
Classification: C23C,H01L

Abstract:
A processing chamber, comprising:an upper wall having a convex outer surface and a concave inner surface, the upper wall extending a length in a y dimension, a width in an x dimension and a height in a z dimension, wherein the upper wall is curved in both x-z and y-z planes; a lower wall spaced from the upper wall having a convex outer surface and a concave inner surface, the lower wall extending a length in the y dimension, a width in the x dimension and a height in the z dimension, wherein the lower wall is curved in both x-z and y-z planes; at least one side wall having an inner surface and an outer surface connecting the upper wall to the lower wall, wherein the upper wall, lower wall and the at least one side wall together substantially enclose a chamber space having all-quartz enclosing surfaces; and an external reinforcement provided on at least part of the outer surface of the at least one side wall to confine outward expansion of the chamber; wherein the upper wall is connected to the lower wall by a plurality of side walls.