Patent ID: 6273957
Filing Date: 2001-08-14
Classification: C23C

Abstract:
A vaporizing device for vaporizing chemical vapor deposition (CVD) source materials comprising:a vaporizer for vaporizing introduced CVD source materials by heating, the vaporizer including a chamber for vaporization of the CVD source materials, the chamber having an inlet for introducing the CVD source materials into the chamber and a heat conductive chamber wall heated during vaporization of the CVD source materials,a spray nozzle having an end fixedly attached to the inlet of the chamber for spraying the CVD source material into the chamber,cooling means disposed outside the chamber and having a cooling portion coupled to the spray nozzle for cooling the spray nozzle, andheat conduction restricting means for restricting heat conduction from the chamber wall to the spray nozzle, the heat conduction restricting means being disposed between the chamber and the end of the spray nozzle, forming an airtight seal between the spray nozzle and the chamber.