申请人:HITACHI CHEMICAL COMPANY, LTD.
公开号:US10930612B2
公开(公告)日:2021-02-23
A copper paste for pressureless bonding is a copper paste for pressureless bonding, containing: metal particles; and a dispersion medium, in which the metal particles include sub-micro copper particles having a volume average particle diameter of greater than or equal to 0.01 μm and less than or equal to 0.8 μm, and micro copper particles having a volume average particle diameter of greater than or equal to 2.0 μm and less than or equal to 50 μm, and the dispersion medium contains a solvent having a boiling point of higher than or equal to 300° C., and a content of the solvent having a boiling point of higher than or equal to 300° C. is greater than or equal to 2 mass % on the basis of a total mass of the copper paste for pressureless bonding.
一种用于无压粘接的铜膏是一种用于无压粘接的铜膏,包含:金属颗粒;和分散介质,其中金属颗粒包括体积平均颗粒直径大于或等于 0.01 μm 且小于或等于 0.8 μm 的亚微型铜颗粒,以及体积平均颗粒直径大于或等于 2.0 μm 且小于或等于 50 μm 的微型铜颗粒,分散介质包含沸点高于或等于 300°C 的溶剂、沸点高于或等于 300 摄氏度的溶剂的含量大于或等于无压接合铜浆总质量的 2%。