Milling of flex foil with two conductive layers from both sides

    公开(公告)号:US11849544B2

    公开(公告)日:2023-12-19

    申请号:US16918474

    申请日:2020-07-01

    申请人: Gentherm Inc.

    摘要: A method for milling flex foil includes providing a web of flex foil including a substrate; a first conductive layer arranged on one surface of the substrate; a second conductive layer arranged on an opposite surface of the substrate; a first insulating layer arranged adjacent to the first conductive layer; and a second insulating layer arranged adjacent to the second conductive layer. The method includes dry milling one side of the web using a first cliché pattern including raised portions and non-raised portions to selectively remove at least one of the first conductive layer and the first insulating layer. The method includes dry milling an opposite side of the web using a second cliché pattern including upper raised portions, lower raised portions and non-raised portions to selectively remove the second insulating layer.

    TAPE AND MANUFACTURING METHOD THEREOF
    4.
    发明公开

    公开(公告)号:US20230380072A1

    公开(公告)日:2023-11-23

    申请号:US18109334

    申请日:2023-02-14

    IPC分类号: H05K3/04

    摘要: A manufacturing method of tape includes the steps of providing a tape including substrate units, providing a die device and a cutting and/or pressing process. Each of the substrate units includes a carrier, a circuit layer, an adhesive and a heat spreader, the heat spreader is attached onto the carrier by the adhesive. In the cutting and/or pressing process, the die device is provided to press the tape to generate separation protrusions on the heat spreader and allow the separation protrusions to protrude from a heat dissipation surface of the heat spreader. When rolling the tape, the separation protrusions can separate the stacked substrate units to prevent the adhesive from being squeezed out to contaminate the tape.

    MANUFACTURING METHOD OF CIRCUIT BOARD STRUCTURE

    公开(公告)号:US20180295723A1

    公开(公告)日:2018-10-11

    申请号:US16008060

    申请日:2018-06-14

    IPC分类号: H05K1/11 H05K3/00

    摘要: A manufacturing method of a circuit board structure includes the following steps: providing an inner circuit structure which includes a core layer; performing a build-up process to laminate a first build-up circuit structure on a first patterned circuit layer of the inner circuit structure, wherein the first build-up circuit structure includes an inner dielectric layer, and the inner dielectric layer directly covers an upper surface of the core layer and the first patterned circuit layer; removing a portion of the first build-up circuit structure to form an opening extending from a first surface of the first build-up circuit structure relatively far away from the inner circuit structure to a portion of the inner dielectric layer; performing a sandblasting process on a first inner surface of the inner dielectric layer exposed by the opening to at least remove the portion of the inner dielectric layer exposed by the opening.

    Circuit board structure and manufacturing method thereof

    公开(公告)号:US10039184B2

    公开(公告)日:2018-07-31

    申请号:US15427061

    申请日:2017-02-08

    IPC分类号: H05K1/11 H05K3/00

    摘要: A circuit board structure includes an inner circuit structure and a first build-up circuit structure. The inner circuit structure includes a core layer having an upper surface and a lower surface opposite to each other, a first patterned circuit layer disposed on the upper surface, a second patterned circuit layer disposed on the lower surface and a conductive via connecting the first and the second patterned circuit layers. The first build-up circuit structure is disposed on the upper surface of the core layer and covers the first patterned circuit layer, wherein the first build-up circuit structure at least has a cavity, the cavity exposes a portion of the first patterned circuit layer and a cross-sectional profile of an edge of a top surface of the portion of the first patterned circuit layer exposed by the cavity is a curved surface.