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发明名称
非挥发性半导体记忆装置及其制造方法
摘要
本发明系在包含使用电荷储存膜之非挥发性记忆用MOS型电晶体及选择此之MOS型电晶体所邻接之分割闸极构造之非挥发性记忆胞中,提高电荷保持特性,使闸极低电阻化。本发明为了抑制电荷储存膜之角部20之薄膜化,以提高电荷保持特性,在选择闸极15之侧壁设置锥部。又,为了稳定地进行使藉自行对准形成之闸极低电阻化之矽化物化,使选择闸极15之侧壁退缩。或在自行对准闸极上部18与选择闸极上部65之间设置阶差。
申请公布号
TW200515603
申请公布日期
2005.05.01
申请号
TW093119073
申请日期
2004.06.29
申请人
瑞萨科技股份有限公司
发明人
安井感;久本大;木村绅一郎
分类号
H01L29/788
主分类号
H01L29/788
代理机构
代理人
陈长文
主权项
地址
日本
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