发明申请
US20090081418A1 SPIN-ON ANTIREFLECTIVE COATING FOR INTEGRATION OF PATTERNABLE DIELECTRIC MATERIALS AND INTERCONNECT STRUCTURES 有权
用于整合电介质材料和互连结构的旋转抗反射涂层(SPIN-ON ANTIREFLECTIVE COATING FOR INTEGRATION OF PATTERNABLE DIELECTRIC MATERIALS AND INTERCONNECT STRUCTURES

SPIN-ON ANTIREFLECTIVE COATING FOR INTEGRATION OF PATTERNABLE DIELECTRIC MATERIALS AND INTERCONNECT STRUCTURES
摘要:
The present invention provides a method of fabricating an interconnect structure in which a patternable low-k material replaces the need for utilizing a separate photoresist and a dielectric material. Specifically, this invention relates to a simplified method of fabricating single-damascene and dual-damascene low-k interconnect structures with at least one patternable low-k dielectric and at least one inorganic antireflective coating. In general terms, a method is provided that includes providing at least one patternable low-k material on a surface of an inorganic antireflective coating that is located atop a substrate. The inorganic ARC is liquid deposited and comprises a polymer that has at least one monomer unit comprising the formula M-R1 wherein M is at least one of Si, Ge, B, Sn, Fe, Ta, Ti, Ni, Hf and La and R1 is a chromophore. At least one interconnect pattern is formed within the at least one patternable low-k material and thereafter the at least one patternable low-k material is cured. The inventive method can be used to form dual-damascene interconnect structures as well as single-damascene interconnect structures.
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