MOLD, PRODUCTION THEREOF, AND PRODUCTION OF ANISOTROPIC CONDUCTIVE SHEET

摘要

PROBLEM TO BE SOLVED: To mold an anisotropic conductive sheet easy to produce and having conductive parts of a complicated pattern at a small pitch and to allow a magnetic field uniform in a surface direction to act on the specific part of a sheet molding material layer. SOLUTION: A mold is equipped with a non-magnetic substrate 10 having a plurality of conical recessed parts formed to the rear surface thereof and the spherical magnetic members 20 comprising a ferromagnetic material held to the recessed parts of the non-magnetic substrate 10. The mold is produced by applying anisotropic etching treatment to one surface of a plate-shaped non-magnetic substrate material susceptible to anisotropic etching to form a plurality of the conical recessed parts and housing the spherical magnetic members 20 in the recessed parts to bond them. An anisotropic conductive sheet is produced by filling the mold with a material containing conductive particles showing magnetism and allowing a magnetic field to act on the material through the magnetic members 20 to cure the same.