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发明名称
使用氯制造积体电路内之沟渠介电层
摘要
于基底隔离沟渠(134)之蚀刻前,形成掺入氯之垫氧化层(110)于一矽基底(120)上。当一第一氧化矽衬层(150.1)以热制程形成于该沟渠表面上时,该氯可以增加沟渠顶端角落之圆角化(140C)。掺有氯之一第二氧化矽衬层(150.2)以化学气相沉积方式沉积于第一衬层(150.1)之上,接着,一第三衬层(150.3)以热制程成长形成。控制第二榇层(150.2)之氯浓度与三榇层(150.1、150.2、150.3)之厚度,以改善角落之圆角化程度,而不至于过度损耗主动区域(140)。
申请公布号
TW200703553
申请公布日期
2007.01.16
申请号
TW095115797
申请日期
2006.05.03
申请人
茂德科技股份有限公司(子公司) PROMOS TECHNOLOGIES PTE. LTD.
发明人
董仲;李台鹏
分类号
H01L21/76(2006.01)
主分类号
H01L21/76(2006.01)
代理机构
代理人
王宗梅
主权项
地址
新加坡
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