METAL FOIL, CIRCUIT BOARD, AND METHOD FOR MANUFACTURING CIRCUIT BOARD

    公开(公告)号:US20240349423A1

    公开(公告)日:2024-10-17

    申请号:US18682745

    申请日:2022-05-30

    IPC分类号: H05K1/09 H05K3/06

    摘要: The present disclosure relates to the technical field of metal foils. Disclosed is a metal foil, including a conductive layer and a bearing layer, the conductive layer and the bearing layer being stacked. The conductive layer is configured to manufacture a conductive line. When a circuit board is manufactured using the metal foil, the bearing layer is separated from the conductive layer by a first etching solution, and a roughness Rz of a surface, close to the conductive layer, of the bearing layer is less than or equal to 2 microns. When the circuit board is manufactured using the metal foil, a surface of the conductive line is substantially flush with a surface of a substrate after the bearing layer is removed, and the surface roughness of the conductive line is low, so that the product requirement for high dimensional accuracy may be satisfied. Meanwhile, embodiments of the present disclosure further correspondingly provide a circuit board and a method for manufacturing the circuit board.

    WIRING SUBSTRATE AND METHOD FOR MANUFACTURING THE SAME

    公开(公告)号:US20240206057A1

    公开(公告)日:2024-06-20

    申请号:US18542813

    申请日:2023-12-18

    申请人: IBIDEN CO., LTD.

    IPC分类号: H05K1/02 H05K3/06

    摘要: A wiring substrate includes a substrate, and a conductor layer formed on the substrate and including copper such that the conductor layer is patterned. The conductor layer is formed such that the upper surface of the conductor layer has a width that is equal to or larger than a width of the lower surface of the conductor layer and that the width of the lower surface is larger than the minimum width of a middle portion of the conductor layer between the upper surface and the lower surface.

    ELECTRONIC DEVICE
    5.
    发明公开
    ELECTRONIC DEVICE 审中-公开

    公开(公告)号:US20230380071A1

    公开(公告)日:2023-11-23

    申请号:US18225692

    申请日:2023-07-25

    IPC分类号: H05K3/00 H01L21/48 H05K3/06

    摘要: An electronic device is disclosed. The electronic device includes a circuit structure. The circuit structure includes a metal member and an insulating layer. The insulating layer surrounds the metal member and includes at least one recess. The metal member corresponds to the recess, the recess exposes a surface of the metal member, and a width of the recess is greater than a width of the metal member in a cross-sectional view of the metal member and the insulating layer.