Patent ID: 6736901
Filing Date: 2004-05-18
Classification: C23C

Abstract:
A vertical chemical vapor deposition system comprising:a reaction chamber comprising a base and a bell jar; a susceptor arranged in the reaction chamber; an induction heating coil arranged below the susceptor, and heating wafers placed on the susceptor; a height adjusting device for supporting the induction heating coil and adjusting a distance between the susceptor and at least a part of the coil; an observation port provided in the bell jar; a radiation thermometer arranged outside the observation port, and measuring a surface temperature of the susceptor and the wafers placed on the susceptor; a drive mechanism supporting the radiation thermometer, and moving a measuring point by the radiation thermometer in a radial direction of the susceptor; and a control unit controlling the drive mechanism, and sequentially setting the measuring point by the radiation thermometer to preset positions so that an output of the radiation thermometer at each measuring point can be captured, and controlling the height adjusting device so that the output of the radiation thermometer coincides with a predetermined value.