Mechanism of electrical conduction through anisotropically conductive adhesive films

Masuo Mizuno, Masumi Saka, Hiroyuki Abé

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Anisotropically conductive adhesive films (ACF's) which had different amount of electrically conductive particle contents and insulating particle contents were offered for measurement of electrical resistance between electrically conductive glass substrates and flexible printed circuits (FPC's) connected by using these ACF's. As a result, the electrical resistance for samples using ACF's containing electrically conductive particles was proved to be low, and also that for samples using ACF's containing insulating particles or no particles was proved to be considerably lower than we had expected. On the other hand, after high temperature and high humidity treatment or temperature cycle treatment, the electrical resistance for samples using ACF's containing electrically conductive particles did not change so much, but that for samples using ACF's containing insulating particles or no particles changed significantly, that is, it increased remarkably. From these facts, we presumed that there were two kinds of electric current passing through ACF's: one passing through electrically conductive particles and the other not passing through them; the current passing through electrically conductive particles did not change so much even after high temperature and high humidity treatment or temperature cycle treatment, but the current not passing through electrically conductive particles significantly reduced after the treatment mentioned above. On the basis of the above result, the role of conductive particles in ACF's was considered.

Original languageEnglish
Pages (from-to)546-553
Number of pages8
JournalIEEE Transactions on Components Packaging and Manufacturing Technology Part A
Volume19
Issue number4
DOIs
Publication statusPublished - 1996 Dec 1

Keywords

  • Anisotropically conductive adhesive film
  • Electrical resistance
  • Electrically conductive particle
  • High temperature and high humidity treatment
  • Insulating particle
  • Mechanism of electrical conduction
  • Particle content
  • Temperature cycle treatment

ASJC Scopus subject areas

  • Engineering(all)

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