MULTI-PITCH LEADS
    1.
    发明申请

    公开(公告)号:US20210050287A1

    公开(公告)日:2021-02-18

    申请号:US16543238

    申请日:2019-08-16

    Abstract: In some examples, a system comprises a die having multiple electrical connectors extending from a surface of the die and a lead coupled to the multiple electrical connectors. The lead comprises a first conductive member; a first non-solder metal plating stacked on the first conductive member; an electroplated layer stacked on the first non-solder metal plating; a second non-solder metal plating stacked on the electroplated layer; and a second conductive member stacked on the second non-solder metal plating, the second conductive member being thinner than the first conductive member. The system also comprises a molding to at least partially encapsulate the die and the lead.

    CHEMICALLY ANCHORED MOLD COMPOUNDS IN SEMICONDUCTOR PACKAGES

    公开(公告)号:US20230272536A1

    公开(公告)日:2023-08-31

    申请号:US17683222

    申请日:2022-02-28

    Inventor: Nazila DADVAND

    Abstract: In examples, a method of forming a semiconductor package comprises forming a conversion coating solution comprising a salt of a vanadate, a salt of a zirconate, or both with a complexing agent; cleaning a copper lead frame, wherein the cleaned copper lead frame comprises copper oxide on an outer surface thereof; immersing the cleaned copper lead frame in the conversion coating solution; rinsing the copper lead frame; and forming an assembly by coupling a semiconductor die to the copper lead frame, coupling the semiconductor die to a lead of the copper lead frame, applying a mold compound onto at least a portion of the outer surface of the copper lead frame, and curing the mold compound. An adhesion strength at an interface between the mold compound and the at least the portion of the outer surface of the copper lead frame is increased relative to a same assembly formed without immersing the copper lead frame in the conversion coating solution.

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