BASE MATERIAL PARTICLE, CONDUCTIVE PARTICLE, CONDUCTIVE MATERIAL, AND CONNECTION STRUCTURE

摘要

Provided is a base material particle that, when electrically connecting between electrodes using conductive particles having a conductive layer formed at the surface thereof, can reduce connection resistance and can suppress the occurrence of cracks at the electrodes. The base material particle (11) has a conductive layer (2) formed at the surface thereof and is used for obtaining conductive particles (1) having a conductive layer (2). The base material particle (11) is a core-shell particle provided with a core (12) and a shell (13) disposed at the surface of the core (12). The compression recovery rate of the base material particle (11) is at least 50%. The compression modulus of elasticity of the base material particle (11) when compressed by 10% is at least 3000 N/mm2 and less than 6000 N/mm2. The ratio of the load value of the base material particle (11) when compressed by 30% with respect to the load value when compressed by 10% is no greater than 3.