Patent ID: 6733592
Filing Date: 2004-05-11
Classification: C30B,H01L,Y10S

Abstract:
A high-temperature and a high-pressure treatment device for treating semiconductor wafers in an atmosphere of high-temperature and high-pressure gas, comprising:a pressure vessel; a treatment chamber for treating a plurality of stacked semiconductor wafers within the pressure vessel; a heater disposed within the treatment chamber so as to be located under the plurality of stacked semiconductor wafers, said heater comprising the only heating device in the pressure vessel, whereby the natural convection of the rising heat from said heater contributes to a substantially uniform temperature within said pressure vessel; and a convection current passage forming member for forming a first passage and a second passage within the treatment chamber, the first passage having the semiconductor wafers therewithin and passing an upflow resulting from heating by the heater, the second passage communicating with the first passage at upper and lower regions of the treatment chamber and causing circulating convection currents to be formed between the first passage and itself by a downflow passing therethrough.