Dexerials Corporation

Kenichi Hirayama

Koji Ejima

Reiji Tsukao

Hiromi Kubode

An anisotropic conductive film has a structure in which high hardness conductive particles having a 20% compression elastic modulus of 8000 to 28000 N/mmand low hardness conductive particles having a lower 20% compression elastic modulus than that of the high hardness conductive particles are dispersed as conductive particles in an insulating resin layer. The number density of all the conductive particles is 6000 particles/mmor more, and the number density of the low hardness conductive particles is 10% or more of that of all the conductive particles.

Anisotropic conductive film

An electrically conductive material with which excellent conduction reliability can be achieved for an oxide layer. The electrically conductive material contains electrically conductive particles including resin core particles, a plurality of electrically insulating particles being disposed on the surface of the resin core particles and forming protrusions, and an electrically conductive layer being disposed on the surface of the resin core particles and the electrically insulating particles, a Mohs' hardness of the electrically insulating particles being greater than 7. As a result, the electrically conductive particles pierce and sufficiently penetrate the oxide layer of the electrode surface so that excellent conduction reliability can be achieved.

Growing community of inventors

Kawasaki, Japan

Kenichi Hirayama