ELECTROCONDUCTIVE PARTICLES, ELECTROCONDUCTIVE MATERIAL, AND CONNECTION STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide electroconductive particles capable of inhibiting flocculation and of inhibiting the occurrence of migration on the outer surface of an electroconductive layer.SOLUTION: The electroconductive particles 1 of the present invention include base particles 2 and electroconductive layers 3 configured on the surfaces of the base particles 2. The electroconductive layer 3 includes: at least one type selected from among nickel, boron, and phosphorus; and copper. The content of copper over the entire region of the electroconductive layer 3 on the outer surface side thereof commensurate with 1/3 of the thickness thereof is lower than the content of copper over the entire remaining region commensurate with 2/3 of the thickness thereof and comprising a middle region commensurate with 1/3 of the thickness of the electroconductive layer 3 and a region on the inner surface side commensurate with 1/3 of the thickness of the electroconductive layer 3.