Patent ID: 6399922
Filing Date: 2002-06-04
Classification: C23C

Abstract:
A single-substrate-heat-treating apparatus for a semiconductor process system, comprising:an airtight process chamber; a worktable arranged within said process chamber and having a top surface configured to place a target substrate thereon; an exhaust mechanism configured to exhaust said process chamber; a supply mechanism configured to supply a process gas into process chamber; a heating mechanism comprising a heater arranged in said worktable and configured to heat said target substrate placed on said worktable; and a heat-compensating member formed of a body separated from said worktable, and having a counter surface facing a bottom surface of said worktable along a periphery of said bottom surface, wherein said counter surface has an inner diameter smaller than a diameter of the target substrate, and an outer diameter larger than the diameter of the target substrate, said counter surface is positioned below said bottom surface and separated from said bottom surface by a distance of from 1 to 10 mm, and said counter surface is formed of a mirror surface having a surface roughness of Rmax=25 &mgr;m or less, such that heat rays and radiant heat are reflected by said counter surface and applied to the periphery of said bottom surface to compensate a periphery of said worktable for heat loss, thereby improving planar uniformity in temperature of the target substrate placed on the top surface of said worktable.