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发明名称
铜/低K内连线结构之化学平坦化效能的改善IMPROVED CHEMICAL PLANARIZATION PERFORMANCE FOR COPPER/LOW-K INTERCONNECT STRUCTURES
摘要
一种位于一基板上的电内连线结构,包含:一第一低K介电层;与该第一低K介电层共价键结的一旋转涂布低KCMP保护层;以及一CVD沈积硬罩/CMP抛光停止层。在该第一低k介电层中可形成电导孔及导线。低KCMP保护层防止因为CMP制程从中心至边缘、或金属密度不同的不均匀对低k介电层所产生的伤害。低KCMP保护层的厚度可加以调整,以因应CMP制程中较大之变化,但不致对该结构之有效介电常数有显着影响。
申请公布号
TW200515534
申请公布日期
2005.05.01
申请号
TW093121459
申请日期
2004.07.19
申请人
万国商业机器公司
发明人
李M 倪秋森;曾蔚祖;克莉斯蒂S 泰柏
分类号
H01L21/768
主分类号
H01L21/768
代理机构
代理人
蔡玉玲
主权项
地址
美国
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