发明名称 3D stack of IC chips having leads reached by vias through passivation covering access plane
摘要 A process in which a plurality of IC chips are stacked in a unitary structure having a novel method of exposing leads on the access plane of the stack. After a layer of dielectric material has been formed on the access plane, trenches (preferably trenches) are formed, e.g., by wet lithographic processing, which expose the access plane leads. Thereafter terminals are formed on the access plane in contact with the leads. At the wafer level, layers of dielectric material are deposited which are sufficiently thick to permit the subsequent forming of trenches in the access plane dielectric without uncovering any of the silicon of the IC chips.
申请公布号 US5688721(A) 申请公布日期 1997.11.18
申请号 US19960622671 申请日期 1996.03.26
申请人 IRVINE SENSORS CORPORATION 发明人 JOHNSON, TONY K.
分类号 H01L21/98;H01L25/065;(IPC1-7):H01L21/283;H01L21/56;H01L21/60;H01L21/70 主分类号 H01L21/98
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