Patent ID: 9607868
Date: 2017-03-28
CPC Classifications: H01L

Claim:
1. A substrate heat treatment apparatus to perform heat treatment for a substrate comprising: a substrate supporting plate that is a ring-shaped plate capable of supporting the substrate; a lifting mechanism configured to hold the substrate supporting plate and raise and lower the substrate supporting plate; a linking member linking the substrate supporting plate and the lifting mechanism, the linking member having lower thermal conductivity than that of the substrate supporting plate; and a heating means for heating the substrate supported by the substrate supporting plate from above the substrate supporting plate in the gravity direction, wherein the linking member is a member different from both the substrate supporting plate and the lifting mechanism, the lifting mechanism includes a raising and lowering means for raising and lowering the substrate supporting plate between a first position close to the heating means and a second position distant from the heating means, the linking member is a ball, the substrate supporting plate includes a first groove provided in a lower surface that is a part of the substrate supporting plate in the gravity direction, the lifting mechanism includes a substrate supporting plate holding portion that is a ring-shaped plate capable of holding the substrate supporting plate and a second groove provided in an upper surface that is part of the substrate supporting plate holding portion in the gravity direction, a longitudinal direction of the first groove coincides with a radial direction of the substrate supporting plate, a longitudinal direction of the second groove coincides with a radial direction of the substrate supporting plate holding portion, and the lifting mechanism holds the substrate supporting plate with the ball sandwiched between the first and second grooves.