Z-Axis anisotropic electrical conductor films in adhesive and standalone forms for electrical interconnection |
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Authors: | Yunsheng Xu D D L Chung |
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Affiliation: | (1) Composite Materials Research Laboratory, State University of New York at Buffalo, 14260-4400 Buffalo, NY |
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Abstract: | Z-axis electrical conductor films in adhesive and standalone forms were made from nickel particles (one per conduction path)
and a polymer matrix (polyvinylidene fluoride for the standalone film and epoxy for the adhesive film). The standalone film
was found to exhibit resilience, conducting path pitch 125 μm and z-axis resistance 2 Ω. 4 Ω, 17, 48 Ω, and 160 Ω per connection
at z-axis pressures of 1.39 MPa, 0.037 MPa, 0.0046 MPa, and 0 MPa respectively; each connection consisted of one nickel particle,
which protruded from both sides of the film; the film exhibited no stress relaxation due to the absence of polymer deformation
under z-axis pressure. The adhesive film exhibited pitch 64 μm and z-axis resistance 52 Ω per connection at zero pressure. |
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Keywords: | Interconnection anisotropic electrical conductor film nickel polymer composite |
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