PRINTED WIRING BOARD
    5.
    发明公开

    公开(公告)号:US20240268038A1

    公开(公告)日:2024-08-08

    申请号:US18434888

    申请日:2024-02-07

    申请人: IBIDEN CO., LTD.

    摘要: A printed wiring board includes a first conductor layer, a resin insulating layer including glass particles and resin, a second conductor layer formed on a surface of the resin insulating layer and including a seed layer and an electrolytic plating layer, and a via conductor connecting the first conductor layer and second conductor layer and including the seed layer and electrolytic plating layer extending from the second conductor layer. The second conductor layer and the via conductor are formed such that the second conductor layer includes signal wirings and that the seed layer is formed by sputtering an alloy including copper, aluminum, and one or more metals selected from nickel, zinc, gallium, silicon, and magnesium, and the resin insulating layer is formed such that the surface of the resin insulating layer includes the resin and that an inner wall surface in the opening includes the resin and the glass particles.