发明者
Lawrence A Clevenger, Maxime Darnon, Qinghuang Lin, Anthony D Lisi, Satyanarayana V Nitta
发表日期
2012/8/14
专利局
US
专利号
8241992
专利申请号
12776885
简介
Methods for producing air gap-containing metal-insulator interconnect structures for VLSI and ULSI devices using a photo-patternable low k material as well as the air gap-containing interconnect structure that is formed are disclosed. More particularly, the methods described herein provide interconnect structures built in a photo-patternable low k material in which air gaps are defined by photolithography in the photo-patternable low k material. In the methods of the present invention, no etch step is required to form the air gaps. Since no etch step is required in forming the air gaps within the photo-patternable low k material, the methods disclosed in this invention provide highly reliable interconnect structures.
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