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    • 30. 发明授权
    • Method for making printed circuit board having low coefficient of thermal expansion power/ground plane
    • 制造具有低热膨胀系数/印刷电路板的方法
    • US06722031B2
    • 2004-04-20
    • US10012426
    • 2001-12-07
    • Robert M. JappMark D. Poliks
    • Robert M. JappMark D. Poliks
    • H01K310
    • H05K3/4641H05K1/0366H05K2201/0141H05K2201/0158H05K2201/0278H05K2201/0281H05K2201/029H05K2201/0323H05K2201/068H05K2201/09309Y10S428/901Y10T29/49126Y10T29/49165
    • Conductive materials that have low coefficients of thermal expansion (CTEs) and that are used for power and ground planes are disclosed. Fibrous materials (such as carbon, graphite, glass, quartz, polyethylene, and liquid crystal polymer fibers) with low CTEs are metallized to provide a resultant conductive material with a low CTE. Such fibers may be metallized in their individual state and then formed into a fabric, or these materials may be formed into a fabric and then metallized or a combination of both metallizations may be used. In addition, a graphite or carbon sheet may be metallized on one or both sides to provide a material that has a low CTE and high conductivity. These metallized, low CTE power and ground planes may be laminated with other planes/cores into a composite, or laminated into a core which is then laminated with other planes/cores into a composite. The resultant composite may be used for printed circuit boards (PCBs) or PCBs used as laminate chip carriers.
    • 公开了具有低热膨胀系数(CTE)并且用于电力和接地平面的导电材料。 具有低CTE的纤维材料(例如碳,石墨,玻璃,石英,聚乙烯和液晶聚合物纤维)被金属化以提供具有低CTE的所得导电材料。 这样的纤维可以以其单独状态进行金属化,然后形成织物,或者这些材料可以形成织物,然后金属化,或者可以使用两种金属化的组合。 此外,石墨或碳片可以在一侧或两侧金属化,以提供具有低CTE和高导电性的材料。 这些金属化的低CTE功率和接地层可以与其它平面/芯层压成复合材料,或者层压成芯,然后将其与其它平面/芯层叠合成复合材料。 所得的复合材料可用于印刷电路板(PCB)或用作层压芯片载体的PCB。