COMPOSITE BOARD MATERIAL AND FLEXIBLE PRINTED CIRCUIT

    公开(公告)号:US20240341031A1

    公开(公告)日:2024-10-10

    申请号:US18525799

    申请日:2023-11-30

    CPC classification number: H05K1/036 H05K2201/0145 H05K2201/0154

    Abstract: The present disclosure provides a composite board material and a flexible printed circuit. The composite board material includes a first material layer, and two second material layers attached to top surface and bottom surface of the first material layer opposite to each other, respectively. The first material layer is bonded to the two second material layers by adhesive layers. The first material layer includes at least one sublayer, and a material of the at least one sublayer includes polyethylene terephthalate. A material of the two second material layers includes polyimide. In this composite board material, polyethylene terephthalate material functions as inner layer(s), and polyimide material functions as outer layers. In this way, the flatness, hardness, and cost of materials can be balanced, thereby making the obtained flexible printed circuit adaptive to various application scenarios and improving the cost performance of the products.

    Method for preparing novel material layer structure of circuit board and article thereof

    公开(公告)号:US20240284599A1

    公开(公告)日:2024-08-22

    申请号:US18617514

    申请日:2024-03-26

    Applicant: LongKai LI

    Inventor: LongKai LI

    Abstract: The present invention discloses a method for preparing a novel material layer structure of a circuit board, comprising the steps of: (1) combining a film with a copper layer to form an FCCL single-sided board; (2) applying a semi-cured functional material layer on a back side of the film of the FCCL single-sided board, wherein the semi-cured functional material layer is an MPI film, an LCP film, a TFP film, a PTFE film, a copper ion migration resistant film, an LDK high-frequency functional adhesive, a copper ion migration resistant adhesive, or a mixture of the LDK high-frequency functional adhesive and the copper ion migration resistant adhesive to form a novel material layer structure for a circuit board. An article prepared by performing the above methods is also disclosed. The prepared novel material layer structure of the circuit board has high-frequency characteristics and/or copper ion migration resistance, and can be used as an integral structure. In the circuit board manufacturing process, it can be manufactured as the circuit board manufacturing material to be different circuit board structures, which brings great convenience for subsequent circuit board manufacturing and simplifies the manufacturing process.

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