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发明名称
半导体装置及其制造方法
摘要
本发明设在浮动闸电极(9)之下方之绝缘膜包含有:第1绝缘膜(6),其位于浮动闸电极下方之两端部;和第2绝缘膜(8),其被第1绝缘膜包夹而位于浮动闸电极下方之中间部。第1绝缘膜和第2绝缘膜以不同之步骤形成,第1绝缘膜之膜厚大于第2绝缘膜之膜厚。另外,第1绝缘膜之从第1绝缘膜之上面到连接第2绝缘膜之上面的部份系带圆弧状。利用此种构造,当浮动闸电极和矽基板间之绝缘膜的膜厚,在端部之增加大于在部之增加的情况时,即可加大该增加部之自由度,且可以容易控制其增加度。
申请公布号
TW200614519
申请公布日期
2006.05.01
申请号
TW094128898
申请日期
2005.08.24
申请人
瑞萨科技股份有限公司
发明人
寺内崇
分类号
H01L29/788;H01L21/8234
主分类号
H01L29/788
代理机构
代理人
赖经臣
主权项
地址
日本
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