PACKAGE SUBSTRATE STRUCTURE
    272.
    发明公开

    公开(公告)号:US20230371187A1

    公开(公告)日:2023-11-16

    申请号:US18315735

    申请日:2023-05-11

    CPC classification number: H05K3/388 H05K1/092 H05K2201/0323 H05K2201/0338

    Abstract: A package substrate structure includes a substrate, a metal base layer, a build-up film, a bonding layer, and a wiring unit. The metal base layer is disposed on the substrate. The build-up film is disposed on the metal base layer and is formed with trenches to expose the metal base layer. The build-up film includes an insulating material. The bonding layer is disposed on the build-up film and includes a graphene-metal composite. The graphene-metal composite includes a metal matrix, and a plurality of graphene nanostructures dispersed in the metal matrix and arranged among lattices of the metal matrix. The graphene nanostructures form covalent bonds with each other. The wiring unit is bonded to the build-up film through the bonding layer and fills the trenches so as to be electrically connected to the metal base layer. The wiring unit is formed with a wiring pattern on the build-up film.

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