Patent ID: 6541326
Filing Date: 2003-04-01
Classification: B82Y,G11C,H01L

Abstract:
A process of producing a nonvolatile semiconductor memory device, including the steps of:forming a drain region, a source region and a channel forming region arranged between the drain region and the source region and contacted to them; forming a gate insulating film including a charge storing means formed on and facing the surface of the channel forming region; and forming a gate electrode on the gate insulating film, said gate insulating film formation step including a step of forming a Fowler-Nordheim (FN) type tunneling film comprising material having an FN tunneling electroconductivity and having a dielectric constant larger than that of silicon oxide, and said FN tunneling film forming step including a step of heating the FN tunneling film at a high temperature under an atmosphere of reduction gas and/or oxidation gas.