Embedding magnetic material, in a cored or coreless semiconductor package

    公开(公告)号:US11355459B2

    公开(公告)日:2022-06-07

    申请号:US15982652

    申请日:2018-05-17

    申请人: Intel Corporation

    摘要: Techniques for fabricating a semiconductor package having magnetic materials embedded therein are described. For one technique, fabrication of package includes: forming a pad and a conductive line on a build-up layer; forming a raised pad structure on the build-up layer, the raised pad comprising a pillar structure on the pad; encapsulating the conductive line and the raised pad structure in a magnetic film comprising one or more magnetic fillers; planarizing a top surface of the magnetic film until top surfaces of the raised pad structure and the magnetic film are co-planar; depositing a primer layer on the top surfaces; removing one or more portions of the primer layer above the raised pad structure to create an opening; and forming a via in the opening on the raised pad structure. The primer layer may comprise one or more of a build-up layer, a photoimageable dielectric layer, and a metal mask.

    3D conductive ink printing method and inductor formed thereof

    公开(公告)号:US10692965B2

    公开(公告)日:2020-06-23

    申请号:US16142817

    申请日:2018-09-26

    申请人: Intel Corporation

    摘要: Methods of forming an inductor using dry processes are described. A cavity is laser drilled in an insulator. A first magnetic material layer is printed in the cavity. An Ag conductive ink is printed on the first magnetic material layer and a second magnetic material layer printed on the ink. The ink has a trace sandwiched between the first and second magnetic material layers that provides a majority of the inductance of the inductor. A protective insulating layer protects the second magnetic material layer from a wet chemistry solution when contacts are formed to the ink. The second magnetic material layer and ink are deposited in or on the cavity.