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Thick conductor built-in type printed wiring board and method for producing same

專利號(hào)
US10791633B2
公開日期
2020-09-29
申請(qǐng)人
Panasonic Intellectual Property Management Co., Ltd.(JP Osaka)
發(fā)明人
Akira Ito; Eiichiro Saito; Naohito Fukuya
IPC分類
H05K3/46; H05K1/03; B32B7/027; H05K1/02
技術(shù)領(lǐng)域
conductor,resin,wiring,layer,prepreg,μm,insulating,printed,board,inclusive
地域: Osaka

摘要

A thick conductor built-in type printed wiring board includes a printed wiring board, an insulating resin layer, an insulating base material layer, and a conductor layer. The printed wiring board includes an insulating layer including a cured product of a first resin composition, and a circuit provided on one main surface or both main surfaces of the insulating layer, the circuit having a plurality of conductor wirings each having a thickness ranging from 105 μm to 630 μm, inclusive. The insulating resin layer covers a surface of the printed wiring board on which the circuit is provided, and includes a cured product of a second resin composition and includes no fibrous base material. The insulating base material layer covers the insulating resin layer, and includes a cured product of a third resin composition and a fibrous base material. The conductor layer covers the insulating base material layer. The thick conductor built-in type printed wiring board does not include a void having a diameter of more than or equal to 10 μm inside the thick conductor built-in type printed wiring board.

說明書

FIG. 2A is a schematic cross-sectional view of step (A) in a method for producing the thick conductor built-in type printed wiring board according to the exemplary embodiment. FIG. 2B is a schematic cross-sectional view of step (B) in the method for producing the thick conductor built-in type printed wiring board according to the exemplary embodiment. FIG. 2C is a schematic cross-sectional view of step (C) in the method for producing the thick conductor built-in type printed wiring board according to the exemplary embodiment. In FIG. 2A and FIG. 2B, the same reference marks are used for the same constituent elements as those illustrated in FIG. 1, and description thereof is omitted.

The method for producing the thick conductor built-in type printed wiring board according to the exemplary embodiment includes step (A), step (B), and step (C) to be described below. Step (A), step (B), and step (C) are performed in this order.

Step (A) is a step of preparing printed wiring board 10 illustrated in FIG. 2A.

權(quán)利要求

1
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