发明授权
US4331710A Method of forming an insulation film on semiconductor device surface
失效
在半导体器件表面上形成绝缘膜的方法
- 专利标题: Method of forming an insulation film on semiconductor device surface
- 专利标题(中): 在半导体器件表面上形成绝缘膜的方法
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申请号: US212083申请日: 1980-09-08
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公开(公告)号: US4331710A公开(公告)日: 1982-05-25
- 发明人: Takao Nozaki , Takashi Ito
- 申请人: Takao Nozaki , Takashi Ito
- 申请人地址: JPX Kanagawa
- 专利权人: Fujitsu Limited
- 当前专利权人: Fujitsu Limited
- 当前专利权人地址: JPX Kanagawa
- 主分类号: H01L21/318
- IPC分类号: H01L21/318
摘要:
In a method of forming an insulating film on the surface of a silicon substrate, a silicon nitride film is formed on such surface by direct thermal nitridation. The nitridation is initially in an ambient gas of nitrogen whereby a comparatively thick silicon nitride film is formed. The ambient gas is then changed to ammonia or a mixture of an inert gas and ammonia to densify the silicon nitride film. The resultant film is useful as an insulating film in semiconductor devices, masks for impurity diffusion and selective oxidation in the manufacture thereof.
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