Fishing – trapping – and vermin destroying
Patent
1994-10-27
1995-11-21
Quach, T. N.
Fishing, trapping, and vermin destroying
437195, 437238, 1566571, H01L 21311
Patent
active
054686857
ABSTRACT:
A semiconductor integrated circuit includes an interlayer insulating film in which vacancies are evenly scattered. In this structure, the effective dielectric constant of the insulating film is reduced so that capacitance between upper and lower wirings and capacitance between adjacent wirings are reduced, resulting in a high speed semiconductor device. In production, a main material of the insulating film mixed with particles of a different material is applied to a surface of a wafer where the insulating film is to be formed. Then, the main material is solidified and the particles are selectively etched with an etchant that etches the particles but does not etch the main material, resulting in an insulating film in which vacancies are uniformly distributed. In this way, an insulating film having a low effective dielectric constant is formed in a simple process, resulting in a high speed semiconductor device having a small capacitance between wirings.
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patent: 5393712 (1995-02-01), Rostoker
Inoue et al, "An Rh/Au/Rh Rigid Air-Bridge Interconnection Technique For Ultra-High Speed GaAs LSIs", 12th Annual GaAs IC Symposium Oct. 7-10, 1990, IEEE Technical Digest 1990, pp. 253-256.
Parillo, "VLSI Process Integration", VLSI Technology, pp. 445 and 475, 1983 McGraw-Hill, (Sze, S. M., Editor).
Noda Minoru
Orisaka Shinji
Mitsubishi Denki & Kabushiki Kaisha
Quach T. N.
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