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发明名称
制造快闪记忆体单元之方法
摘要
本发明系关于一种制造快闪记忆体单元之方法。在蚀刻法之后,用以形成控制闸极之清洗制程执行期间,聚合物留在矽化钨层之侧壁。因此,矽化钨层之侧壁受到保护以免于后续之自我对准蚀刻处理。此外,在自我对准蚀刻法时,使用HBr/O2之混合气体,充份地取得矽化钨层对多晶矽层之蚀刻选择比。所以,可防止矽化钨层侧壁之蚀刻伤害。因此可改良制程之可靠度及电子特征。
申请公布号
TW200408070
申请公布日期
2004.05.16
申请号
TW091133013
申请日期
2002.11.11
申请人
海力士半导体股份有限公司
发明人
扬鳞权
分类号
H01L21/8247
主分类号
H01L21/8247
代理机构
代理人
陈长文
主权项
地址
韩国
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