Patent ID: 6580059
Filing Date: 2003-06-17
Classification: H01L

Abstract:
A control apparatus for a light radiation-type rapid heating and processing device comprising a region in which a plurality of filament lamps are arranged which emit light including infrared rays onto a processed substrate to perform a rapid heating of the processed substrate, whereinthe region having said plurality of filament lamps arranged therein is divided into a plurality of zones corresponding to a distance from the center of said region, and at least one filament lamp is installed in each of the zones; said control apparatus being comprised of: a plurality of lamp control units having switching elements for switching a sinusoidal alternating current supplied from an AC power supply or a full-wave rectified sinusoidal alternating current, each of the switching elements being arranged in correspondence with a respective one of the zones; and a control part for changing the duty factors of ON/OFF signals of each of the switching elements of said plurality of lamp power control units and for controlling the electrical power supplied to each of the filament lamps belonging to each of said zones.