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Resistance Change Mechanism of Electronic Component Mounting through Contact Pressure Using Elastic Adhesive

For mounting electronic components through contact pressure using elastic adhesives, a high contact resistance is an inevitable issue in achieving solderless wiring in a low-temperature and low-cost process. To decrease the contact resistance, we investigated the resistance change mechanism by measu...

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Detalles Bibliográficos
Autores principales: Sato, Takashi, Koshi, Tomoya, Iwase, Eiji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631103/
https://www.ncbi.nlm.nih.gov/pubmed/31207964
http://dx.doi.org/10.3390/mi10060396
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author Sato, Takashi
Koshi, Tomoya
Iwase, Eiji
author_facet Sato, Takashi
Koshi, Tomoya
Iwase, Eiji
author_sort Sato, Takashi
collection PubMed
description For mounting electronic components through contact pressure using elastic adhesives, a high contact resistance is an inevitable issue in achieving solderless wiring in a low-temperature and low-cost process. To decrease the contact resistance, we investigated the resistance change mechanism by measuring the contact resistance with various contact pressures and copper layer thicknesses. The contact resistivity decreased to 4.2 × 10(−8) Ω·m(2) as the contact pressure increased to 800 kPa and the copper layer thickness decreased to 5 µm. In addition, we measured the change in the total resistance with various copper layer thicknesses, including the contact and wiring resistance, and obtained the minimum combined resistance of 123 mΩ with a copper-layer thickness of 30 µm using our mounting method. In this measurement, a low contact resistance was obtained with a 5-µm-thick copper layer and a contact pressure of 200 kPa or more; however, there is a trade-off with respect to the copper layer thickness in obtaining the minimum combined resistance because of the increasing wiring resistance. Subsequently, based on these measurements, we developed a sandwich structure to decrease the contact resistance, and a contact resistivity of 8.0 × 10(−8) Ω·m(2) was obtained with the proposed structure.
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spelling pubmed-66311032019-08-19 Resistance Change Mechanism of Electronic Component Mounting through Contact Pressure Using Elastic Adhesive Sato, Takashi Koshi, Tomoya Iwase, Eiji Micromachines (Basel) Article For mounting electronic components through contact pressure using elastic adhesives, a high contact resistance is an inevitable issue in achieving solderless wiring in a low-temperature and low-cost process. To decrease the contact resistance, we investigated the resistance change mechanism by measuring the contact resistance with various contact pressures and copper layer thicknesses. The contact resistivity decreased to 4.2 × 10(−8) Ω·m(2) as the contact pressure increased to 800 kPa and the copper layer thickness decreased to 5 µm. In addition, we measured the change in the total resistance with various copper layer thicknesses, including the contact and wiring resistance, and obtained the minimum combined resistance of 123 mΩ with a copper-layer thickness of 30 µm using our mounting method. In this measurement, a low contact resistance was obtained with a 5-µm-thick copper layer and a contact pressure of 200 kPa or more; however, there is a trade-off with respect to the copper layer thickness in obtaining the minimum combined resistance because of the increasing wiring resistance. Subsequently, based on these measurements, we developed a sandwich structure to decrease the contact resistance, and a contact resistivity of 8.0 × 10(−8) Ω·m(2) was obtained with the proposed structure. MDPI 2019-06-14 /pmc/articles/PMC6631103/ /pubmed/31207964 http://dx.doi.org/10.3390/mi10060396 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sato, Takashi
Koshi, Tomoya
Iwase, Eiji
Resistance Change Mechanism of Electronic Component Mounting through Contact Pressure Using Elastic Adhesive
title Resistance Change Mechanism of Electronic Component Mounting through Contact Pressure Using Elastic Adhesive
title_full Resistance Change Mechanism of Electronic Component Mounting through Contact Pressure Using Elastic Adhesive
title_fullStr Resistance Change Mechanism of Electronic Component Mounting through Contact Pressure Using Elastic Adhesive
title_full_unstemmed Resistance Change Mechanism of Electronic Component Mounting through Contact Pressure Using Elastic Adhesive
title_short Resistance Change Mechanism of Electronic Component Mounting through Contact Pressure Using Elastic Adhesive
title_sort resistance change mechanism of electronic component mounting through contact pressure using elastic adhesive
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6631103/
https://www.ncbi.nlm.nih.gov/pubmed/31207964
http://dx.doi.org/10.3390/mi10060396
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