Anisotropically conductive member and method of manufacture

A method of manufacturing an anisotropically conductive member comprising:

• an insulating base material;
• and conductive paths composed of a conductive material which pass in a mutually insulated state through the insulating base material in a thickness direction thereof and which are provided in such a way that a first end of each conductive path is exposed on a first side of the insulating base material and a second end of each conductive path is exposed on a second side of the insulating base material;
• wherein the conductive paths have a density of at least 2 million paths/mm2 and the insulating base material is a structure composed of an anodized aluminum film having micropores therein,
• the method comprising, in order:
• an anodizing step of anodizing an aluminum substrate so as to form the anodized film having micropores therein;
• a perforating step of passing holes determined by the micropores through the anodized film so as to obtain the insulating base material;
• and
• a metal filling step of filling a metal as the conductive material into the holes which pass through the insulating base material so as to obtain said anisotropically conductive member.