BUMP BASE REINFORCEMENT SHEET
    7.
    发明申请

    公开(公告)号:US20180304603A1

    公开(公告)日:2018-10-25

    申请号:US15770567

    申请日:2016-10-13

    发明人: Chie Iino Goji Shiga

    CPC分类号: B32B27/30 H01L2224/11

    摘要: Provided is a bump base reinforcement sheet which can reinforce a base portion of even a solder bump having a large diameter on a primary mounted substrate side and achieve good electrical connection with a secondary mounted substrate. A bump base reinforcement sheet includes: a base material sheet; and a thermosetting resin sheet laminated on the base material sheet, in which a thickness t [μm] of the base material sheet and a minimum melt viscosity η [Pa·s] of the thermosetting resin sheet at 50 to 180° C. satisfy the following relational expression: 150≤t·η≤100000.