METHOD FOR FORMING INSULATING FILM AND DEVICE THEREFOR

• Main Authors: TADA YOSHIHIDE, NAKAMURA KENJI, SUEMURA ASAMI, IMAI MASAYUKI, HISHIYA SHINGO
• Format: Patent
• Language: English; Korean
• Published: 16.04.2001
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SEMICONDUCTOR DEVICES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

PURPOSE: A method for forming an insulating film and a device therefor are provided to obtain an excellent electric characteristic by reducing accumulation of thermal hysteresis in an insulating film when the insulating film is produced by oxidizing a silicon layer. CONSTITUTION: A wafer(W) with a silicon layer is sent to a vertical heat treating furnace(41), a processing atmosphere is generated, for example, at 850 deg.C, and a silicon oxide film is formed, for example, by means of wet oxidation with steam. Then heat treatment(anneal process) is performed with the wafer(W) arranged in the heat treating furnace(41) under a processing atmosphere, for example, at 850 deg.C while introducing an N2O gas for a predetermined period of time.