CIRCUIT BOARD STRUCTURE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20240389232A1

    公开(公告)日:2024-11-21

    申请号:US18220548

    申请日:2023-07-11

    Abstract: A circuit board structure and a manufacturing method thereof. Circuit board structure includes first circuit board, second circuit board, conductive coil, magnetic body and molding compound. First circuit board has first side surface and first cavity located on first side surface. Second circuit board has second side surface facing first side surface and being spaced apart from first side surface. Conductive coil is in a spiral shape and includes first coil pattern and second coil pattern. First coil pattern is disposed in first circuit board. Second coil pattern is disposed in second circuit board. First coil pattern is electrically connected to second coil pattern. Magnetic body is filled in first cavity of first circuit board. Conductive coil surrounds at least a part of magnetic body. Molding compound is filled in a gap between first side surface and second side surface.

    CIRCUIT BOARD AND MANUFACTURE METHOD OF THE CIRCUIT BOARD

    公开(公告)号:US20220217841A1

    公开(公告)日:2022-07-07

    申请号:US17185216

    申请日:2021-02-25

    Abstract: A circuit board is manufactured by mounting a first circuit layer, mounting a conductive bump on the first circuit layer, covering the first circuit layer with a first dielectric layer which exposes the conductive bump, mounting a second dielectric layer on the first dielectric layer with a second dielectric layer opening that exposes the conductive bump, and finally, mounting a second circuit layer on the surface of the second dielectric layer and in the second dielectric layer opening. Since the surface roughness of the second dielectric layer and the second dielectric layer opening is low, it is unlikely to form nano voids between the second dielectric layer and the second circuit layer, and the second circuit layer may be attached to the second dielectric layer firmly, which is an advantage for fine line circuit disposal.

    CIRCUIT BOARD STRUCTURE AND FABRICATION METHOD THEREOF

    公开(公告)号:US20250089173A1

    公开(公告)日:2025-03-13

    申请号:US18388483

    申请日:2023-11-09

    Abstract: A circuit board structure includes a core, a wiring layer and a buried passive component. The wiring layer and the buried passive component are disposed on the core, and the buried passive component is electrically connected to the wiring layer. The buried passive component includes a first spiral metal layer, a second spiral metal layer and a dielectric interlayer. The first spiral metal layer is intertwined with the second spiral metal layer. The dielectric interlayer is disposed between the first spiral metal layer and the second spiral metal layer. The first spiral metal layer and the second spiral metal layer are spaced apart by the dielectric interlayer at least in the core.

    CIRCUIT BOARD STRUCTURE AND MANUFACTURING METHOD THEREOF

    公开(公告)号:US20240381533A1

    公开(公告)日:2024-11-14

    申请号:US18205240

    申请日:2023-06-02

    Abstract: A circuit board structure including a first circuit board, a second circuit board, a conductive coil and a first molding compound and a manufacturing method thereof. The first circuit board has a first side surface. The second circuit board has a second side surface facing the first side surface and being spaced apart from the first side surface. The conductive coil is in a spiral shape and includes a first coil pattern and a second coil pattern. The first coil pattern is disposed in the first circuit board. The second coil pattern is disposed in the second circuit board. The first coil pattern is electrically connected to the second coil pattern. The first molding compound is magnetic and filled in a gap located between the first side surface and the second side surface. The conductive coil surrounds at least a part of the first molding compound.

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