SINGLE LITHOGRAPHY METHODS FOR INTERCONNECT ARCHITECTURES

    公开(公告)号:US20230420346A1

    公开(公告)日:2023-12-28

    申请号:US17846303

    申请日:2022-06-22

    Abstract: Various embodiments disclosed relate to a semiconductor assembly interconnect structure. The present disclosure includes an interconnect structure that case include a substrate, a metallic layer thereon, an adhesion promoter film formed over the metallic layer and forming a flat region over a flat portion of the metallic layer, a solder resist layer formed over the adhesion promoter film, an opening in the solder resist layer and the adhesion promoter film in the flat region of the adhesion promotion film, the opening connecting to the flat portion of the metallic layer, and a stacked electrical connector formed on the metallic layer within the opening. Methods of making an interconnect structure can include patterning a metallic layer on a substrate, depositing an adhesion promoter layer on the metallic layer opposite the substrate, patterning the adhesion promoter layer to expose selected portions of the metallic layer, and depositing a surface finish layer on the exposed selected portions of the metallic layer.

    HYBRID METALLIZATION SURFACES FOR INTEGRATED CIRCUIT PACKAGES

    公开(公告)号:US20250006616A1

    公开(公告)日:2025-01-02

    申请号:US18216521

    申请日:2023-06-29

    Abstract: IC die package with hybrid metallization surfaces. Routing metallization features have lower surface roughness for reduced high-frequency signal transmission losses while IC die attach metallization features have higher surface roughness for greater adhesion. Routing and die attach features may be formed within a same package metallization level, for example with a plating process. An insulator material may be formed over the surface of the metallization features, for example with a dry film lamination process. Optionally, an interface material may be deposited upon at least the routing features to enhance adhesion of the insulator material to metallization surfaces of low roughness. An opening in the insulator material may be formed to expose a surface of a die attach feature. The exposed surface may be selectively roughened, and an IC die attached to the roughened surface.

    MULTI-PATHWAY ROUTING VIA THROUGH HOLE
    9.
    发明公开

    公开(公告)号:US20230420298A1

    公开(公告)日:2023-12-28

    申请号:US17851999

    申请日:2022-06-28

    Abstract: An electronic device comprises a substrate layer comprising a first side and an opposing second side, a through hole passing through the substrate layer between the first side and the second side, a first electrical pathway passing from a first position on the first side of the substrate layer, through a first portion of the through hole, to a first corresponding position on the second side of the substrate layer, a second electrical pathway passing from a second position on the first side of the substrate layer, through a second portion of the through hole, to a corresponding second position on the second side of the substrate layer, and an insulation layer between the first electrical pathway and the second electrical pathway within the through hole, wherein the insulation layer electrically isolates the first electrical pathway from the second electrical pathway.

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