JP2005183880A - 多層配線板用基材、両面配線板およびそれらの製造方法 - Google Patents
多層配線板用基材、両面配線板およびそれらの製造方法 Download PDFInfo
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Abstract
【解決手段】多層配線板用基材(10)は、片面に層間導通用のバンプ(12)が形成された金属層(11)のバンプ形成面に、接着性を有する絶縁樹脂材料(16)をバンプ頂部を除く領域に塗布することでバンプの頂部(12A)が露出または突出した絶縁接着層(17)を形成した。また、両面配線板(20)は、片面に層間導通用のバンプ(12)、および、接着性を有する絶縁樹脂材料(16)をバンプ頂部を除く領域に塗布することでバンプの頂部(12A)が露出または突出した絶縁接着層(17)が形成された第1の金属層(11)と、絶縁接着層(17)で貼り合わされてバンプ(12)により第1の金属層(11)と層間導通された第2の金属層(18)とを備える。
【選択図】図1
Description
11 金属板(第1の金属層)
12 バンプ
13 マスキング
16 樹脂前駆体
17 絶縁接着層
18 金属板(第2の金属層)
20 両面配線板
21、22 導体回路
30 多層配線板用基材
31 樹脂前駆体
32 下地層
33 可塑性ポリイミド前駆体
34 表層
35 絶縁接着層
50 両面配線板
Claims (8)
- 片面に層間導通用のバンプが形成された金属層のバンプ形成面に、接着性を有する絶縁樹脂材料をバンプ頂部を除く領域に塗布することで前記バンプの頂部が露出または突出した絶縁接着層を形成したことを特徴とする多層配線板用基材。
- 前記絶縁接着層は、前記金属層に塗布された当該金属層の線膨張係数に近い線膨張係数を有する第1の絶縁層と、前記第1の絶縁層に塗布された接着性を有する第2の絶縁層とからなることを特徴とする請求項1記載の多層配線板用基材。
- 片面に層間導通用のバンプ、および、接着性を有する絶縁樹脂材料をバンプ頂部を除く領域に塗布することで前記バンプの頂部が露出または突出した絶縁接着層が形成された第1の金属層と、
前記絶縁接着層で貼り合わされて前記バンプにより前記第1の金属層と層間導通された第2の金属層と、
を備えていることを特徴とする両面配線板。 - 前記絶縁接着層は、前記第1の金属層に塗布された当該第1の金属層の線膨張係数に近い線膨張係数を有する第1の絶縁層と、前記第1の絶縁層に塗布された接着性を有する第2の絶縁層とからなることを特徴とする請求項3記載の両面配線板。
- 金属層の片面に層間導通用のバンプを形成する工程と、
前記金属層のバンプ形成面に、前記バンプの配置パターンを遮蔽するマスキングを位置決めする工程と、
前記マスキングを通して接着性を有する絶縁樹脂材料を塗布し、前記金属層のバンプ形成面に前記バンプの頂部が露出または突出した絶縁接着層を形成する工程と、
を有することを特徴とする多層配線板用基材の製造方法。 - 前記絶縁接着層を形成する工程は、
前記金属層の線膨張係数に近い線膨張係数を有する第1の絶縁樹脂材料を塗布する工程と、
前記第1の絶縁樹脂材料により形成される第1の絶縁層上に、接着性を有する第2の絶縁樹脂材料を塗布する工程と、
を含むことを特徴とする請求項5記載の多層配線板用基材の製造方法。 - 第1の金属層の片面に層間導通用のバンプを形成する工程と、
前記第1の金属層のバンプ形成面に、前記バンプの配置パターンを遮蔽するマスキングを位置決めする工程と、
前記マスキングを通して接着性を有する絶縁樹脂材料を塗布し、前記第1の金属層のバンプ形成面に前記バンプの頂部が露出または突出した絶縁接着層を形成する工程と、
第2の金属層を前記バンプにより前記第1の金属層と層間導通を保って前記絶縁接着層で貼り合わせる工程と、
を有することを特徴とする両面配線板の製造方法。 - 前記絶縁接着層を形成する工程は、
前記第1の金属層の線膨張係数に近い線膨張係数を有する第1の絶縁樹脂材料を塗布する工程と、
前記第1の絶縁樹脂材料により形成される第1の絶縁層上に、接着性を有する第2の絶縁樹脂材料を塗布する工程と、
を含むことを特徴とする請求項7記載の両面配線板の製造方法。
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