Patent ID: 7905700
Filing Date: 2011-03-15
Classification: H01L

Abstract:
1. A vertical-type heat processing apparatus comprising: a heat processing furnace; a holder, that is loaded into the heat processing furnace and unloaded therefrom, for holding therein a plurality of objects to be processed at predetermined vertical intervals in a tier-like manner; a transfer mechanism including a base table that vertically moves and rotates, and a substrate supporter that horizontally moves on the base table; a motor for moving the transfer mechanism; a motor driver for controlling the motor, the motor driver including a position loop, a velocity loop, and a current loop; and a controller for monitoring position information from the position loop, velocity information from the velocity loop, and current information from the current loop, and controlling the transfer mechanism by comparing the monitored information with predetermined information corresponding to a normal drive to judge whether the transfer mechanism is abnormally driven, the controller stopping drive of the transfer mechanism if it determines that the transfer mechanism is abnormally driven, wherein the transfer mechanism transfers an object to be processed between a container containing a plurality of objects to be processed at predetermined intervals, and the holder, and the substrate supporter includes a to-and-fro driving part for driving the substrate supporter in the horizontal direction, and a pitch-change driving part for changing a pitch at which the objects to be processed are supported.