NONCONDUCTIVE ADHESIVE COMPOSITION AND FILM AND METHODS OF MAKING

摘要

To provide a nonconductive adhesive film, for electrically connecting a flexible printed circuit board to a circuit board, which is superior in both storage stability and curability and which suppresses the formation of air bubbles at the time of press bonding. A nonconductive adhesive film substantially comprising a heat-curable epoxy resin, a latent curing agent, and organic elastic fine particles of an average particle size of approximately 1 µm or less, a film being formed by aggregation of the organic elastic fine particles, is provided.