Invention Grant
- Patent Title: Spin-on antireflective coating for integration of patternable dielectric materials and interconnect structures
- Patent Title (中): 旋转抗反射涂层,用于集成可图案化介电材料和互连结构
-
Application No.: US11858615Application Date: 2007-09-20
-
Publication No.: US07709370B2Publication Date: 2010-05-04
- Inventor: Robert D. Allen , Phillip J. Brock , Blake W. Davis , Wu-Song S. Huang , Qinghuang Lin , Alshakim Nelson , Sampath Purushothaman , Ratnam Sooriyakumaran
- Applicant: Robert D. Allen , Phillip J. Brock , Blake W. Davis , Wu-Song S. Huang , Qinghuang Lin , Alshakim Nelson , Sampath Purushothaman , Ratnam Sooriyakumaran
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Daniel P. Morris, Esq.
- Main IPC: H01L21/4763
- IPC: H01L21/4763

Abstract:
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.
Public/Granted literature
Information query
IPC分类: