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    • 8. 发明授权
    • Integrated circuit assembly with polymeric underfill body
    • 集成电路组件与聚合物底部填充体
    • US5654081A
    • 1997-08-05
    • US498207
    • 1995-07-05
    • Michael G. Todd
    • Michael G. Todd
    • C08G59/24C08G59/42C08G59/68H01B3/40H01L21/56B32B9/00
    • C08G59/24C08G59/42C08G59/686H01B3/40H01L21/563H01L2224/73203H01L2924/01079Y10T428/24917Y10T428/2804Y10T428/287
    • In a method of producing an integrated circuit assembly, an IC device is metallurgically bonded to a supporting substrate. The mounting of the IC device to the substrate also includes a polymeric underfill body adhesively bonding the IC device to the substrate. The polymeric underfill body is formed of a curable underfill composition comprising epoxy resin, anhydride curing agent for the epoxy resin, amine catalyst and a minor amount of an additional component selected from alkyl-substituted imidazole and phenyl-substituted imidazole. Such additional component may act as a catalyst, as used with an amine catalyst known catalyst for the polymerization reaction of the epoxy resin with the anhydride curing agent, may act as a co-catalyst. The polymeric underfill body has improved glass transition temperature values and improved coefficient of thermal expansion values to provide good thermal stress cycling life for the integrated circuit assembly. The additional component, such as N-methyl-imidazole, is used in minor amount, such as from 0.05 to 5.0 weight percent.
    • 在制造集成电路组件的方法中,IC器件冶金地结合到支撑衬底。 将IC器件安装到衬底上还包括将IC器件粘合到衬底上的聚合物底部填充体。 聚合物底部填充体由包含环氧树脂,用于环氧树脂的酸酐固化剂,胺催化剂和少量选自烷基取代的咪唑和苯基取代的咪唑的附加组分的可固化底部填充组合物形成。 这种另外的组分可以用作催化剂,与胺催化剂一起使用的已知的用于环氧树脂与酸酐固化剂的聚合反应的催化剂可用作助催化剂。 聚合物底部填充体具有改进的玻璃化转变温度值和改善的热膨胀系数,以为集成电路组件提供良好的热应力循环寿命。 另外的组分如N-甲基 - 咪唑以少量使用,例如0.05-5.0重量%。