发明名称 INTEGRATED DEVICE TECHNOLOGY USING A BURIED POWER BUSS FOR MAJOR DEVICE AND CIRCUIT ADVANTAGES
摘要 A method for providing an improved integrated circuit device is disclosed. The method comprises the steps of providing active and passive areas in the substrate, providing a plurality of slots in the substrate after providing the active and passive areas, and oxidizing the plurality of slots. The method further comprises providing metal in each of the plurality of slots, providing a dielectric coating over the slots, and providing etched contacts in select areas remote from the location of the slots. Additionally, the method provides an additional layer of metal that interconnects the contacts and the buried metal in select areas where contacts were etched, resulting in metal of three levels; and provides one level of the metal is surface and two levels of the metal that comprise a buried power buss (BPB).
申请公布号 US2009159561(A1) 申请公布日期 2009.06.25
申请号 US20070672195 申请日期 2007.02.07
申请人 MICREL, INC. 发明人 HUSHER JOHN DURBIN
分类号 B44C1/22;H01L21/74;H01L21/768;H01L23/528 主分类号 B44C1/22
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