Patent ID: 8692166
Filing Date: 2014-04-08
Classification: F27D,H01L

Abstract:
1. A substrate heating device for heating a substrate by a lamp heating device, comprising: a power source; a capacitor being charged by said power source; a flash lamp discharging by the electrical charge being accumulated in said capacitor; and a trigger device for starting the discharge in said flash lamp, wherein a semiconductor switch being connected in series to said flash lamp and a controller controlling the on/off of said semiconductor switch are provided, wherein said controller has a drive circuit which a plurality of times outputs a drive signal to turn said semiconductor switch on and off and which provides for the light emission while performing such a control that the electrical charge being accumulated in said capacitor is divided over the plurality of times, and wherein an on-period of a first drive signal is at least 40 μs, wherein the total time of said drive signal is 1 ms to 100 ms.