JP2010010640A - 電子部品組込み型印刷回路基板及びその製造方法 - Google Patents
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Abstract
【解決手段】コア層となる絶縁層110と、絶縁層110の上部に、その一部が突出するように埋設された電子部品120と、電子部品120の突出表面を含めて絶縁層110上に設けられた金属シード層130と、金属シード層130上に設けられたメッキ層140と、絶縁層110に設けられたビアホール113を介して電子部品120のパッドと電気的に接続される回路パターン114と、絶縁層110上に設けられ、回路パターン114と電気的に接続されたビアホール151上にソルダーボール160が付着されるソルダーレジスト層150と、を含んだ印刷回路基板を提供する。
【選択図】 図1
Description
まず、図1は、本発明の一実施の形態による電子部品組込み型印刷回路基板の断面図である。同図のように、本発明の実施の形態による電子部品組込み型印刷回路基板100は、絶縁層110と、該絶縁層110にその一部が埋め込まれている電子部品120と、絶縁層110に設けられたメッキ層140と、絶縁層110に設けられた回路パターン114と、回路パターン114と絶縁されるソルダーレジスト層150とから構成される。
図2〜図8は、本発明の第1の実施の形態による電子部品組込み型印刷回路基板の製作工程を示す断面図である。
図9〜図13はそれぞれ、本発明の第2の実施の形態による電子部品組込み型印刷回路基板の製造工程を示す断面図である。
111 ホイル
112 ピット
114 回路パターン
120 電子部品
130 金属シード層
140 メッキ層
150 ソルダーレジスト層
160 ソルダーボール
170 伝導性ペースト層
Claims (29)
- コア層を設ける絶縁層と、
前記絶縁層の上部に、一部が突出するように埋設された電子部品と、
前記電子部品の突出表面を含めて前記絶縁層上に設けられた金属シード層と、
前記金属シード層上に設けられたメッキ層と、
前記絶縁層に設けられたビアホールを介して前記電子部品のパッドと電気的に接続される回路パターンと、
前記絶縁層上に設けられ、前記回路パターンと電気的に接続されたビアホール上にソルダーボールが付着されるソルダーレジスト層と、
を含むことを特徴とする電子部品組込み型印刷回路基板。 - 前記絶縁層及び前記電子部品のうちのいずれか一つが、所定の温度で加熱され、前記絶縁層に前記電子部品が実装される時、前記絶縁層の流動性が保持されるようにしたことを特徴とする請求項1に記載の電子部品組込み型印刷回路基板。
- 前記絶縁層において、前記電子部品寄りに沿ってピットが設けられたことを特徴とする請求項1に記載の電子部品組込み型印刷回路基板。
- 前記ピットは、前記絶縁層の粘度調節によって、前記電子部品の押込み時に設けられることを特徴とする請求項3に記載の電子部品組込み型印刷回路基板。
- 前記絶縁層は、熱可塑性樹脂、熱硬化性樹脂またはUV硬化樹脂のうちのいずれか一つまたはこれらの混合樹脂から成ることを特徴とする請求項1に記載の電子部品組込み型印刷回路基板。
- 前記絶縁層が熱可塑性樹脂から成る場合、前記絶縁層を再加熱し、前記電子部品が分離されることによって前記電子部品の再使用を可能にしたことを特徴とする請求項5に記載の電子部品組込み型印刷回路基板。
- 前記絶縁層の下面に、前記絶縁層が加熱によって流動性を有する時、その形態を保持するために、金属材質のテープまたはホイルが付着されることを特徴とする請求項1に記載の電子部品組込み型印刷回路基板。
- 前記金属シード層は、蒸着、スパッタリングまたは無電解メッキによって所定の厚さに設けられることを特徴とする請求項1に記載の電子部品組込み型印刷回路基板。
- 前記メッキ層は、電解メッキによって銀または銅の金属材質から成ることを特徴とする請求項1に記載の電子部品組込み型印刷回路基板。
- コア層となる絶縁層と、
前記絶縁層の上部に、一部が突出するように埋設された電子部品と、
前記電子部品の突出表面を含めて前記絶縁層上に設けられた伝導性ペースト層と、
前記絶縁層に設けられたビアホールを介して前記電子部品のパッドと電気的に接続される回路パターンと、
前記絶縁層上に設けられ、前記回路パターンと電気的に接続されたビアホール上にソルダーボールが付着されるソルダーレジスト層と、
を含むことを特徴とする電子部品組込み型印刷回路基板。 - 前記伝導性ペースト層は、熱伝導効率の良いペーストと接着剤とが混合された形態の銀ペーストまたは銅ペーストから成ることを特徴とする請求項10に記載の電子部品組込み型印刷回路基板。
- 前記絶縁層において、前記電子部品寄りに沿ってピットが設けられたことを特徴とする請求項10に記載の電子部品組込み型印刷回路基板。
- 前記絶縁層が熱可塑性樹脂から成る場合、前記絶縁層を再加熱し、前記電子部品が分離されることによって前記電子部品の再使用を可能にしたことを特徴とする請求項10に記載の電子部品組込み型印刷回路基板。
- 絶縁層に電子部品を押込み、該絶縁層上に電子部品の一部が露出するように該電子部品を実装するステップと、
前記絶縁層を硬化させ、前記電子部品を固定するステップと、
前記電子部品の露出表面を含めて前記絶縁層の上面に金属シード層を設けるステップと、
前記金属シード層の上にメッキ層を設けるステップと、
前記絶縁層上に前記電子部品のパッドと対応する位置にビアホールを設け、該パッドと電気的に導通される回路パターンを設けるステップと、
前記回路パターンと電気的に接続されるビアホールが設けられたソルダーレジスト層を設けるステップと、
を含むことを特徴とする電子部品組込み型印刷回路基板の製造方法。 - 前記ソルダーレジストを設けるステップの後に、
前記回路パターンと電気的に接続された前記ビアホールの形成個所にソルダーボールを設けるステップを、さらに含むことを特徴とする請求項14に記載の電子部品組込み型印刷回路基板の製造方法。 - 前記絶縁層は、熱可塑性樹脂、熱硬化性樹脂、UV硬化樹脂またはこれらの混合樹脂から成ることを特徴とする請求項14に記載の電子部品組込み型印刷回路基板の製造方法。
- 前記絶縁層及び前記電子部品のうちのいずれか一つが、選択的に加熱され、前記電子部品の押込み時に前記絶縁層に流動性が与えられるようにしたことを特徴とする請求項14に記載の電子部品組込み型印刷回路基板の製造方法。
- 前記絶縁層上に前記電子部品を実装するステップにおいて、
前記絶縁層の下面に金属材質のテープまたはホイルが設けられることを特徴とする請求項14に記載の電子部品組込み型印刷回路基板の製造方法。 - 前記絶縁層上に前記電子部品を実装するステップにおいて、
前記電子部品は、その上面が真空の押込み手段で吸着され、押込み力調節によって前記絶縁層上に一部のみが埋め込まれるように実装されることを特徴とする請求項14に記載の電子部品組込み型印刷回路基板の製造方法。 - 前記絶縁層上に前記電子部品を実装するステップにおいて、
前記絶縁層において前記電子部品寄りにピットが設けられるようにしたことを特徴とする請求項19に記載の電子部品組込み型印刷回路基板の製造方法。 - 前記絶縁層を硬化させ、前記電子部品を固定するステップの後に、
前記絶縁層が熱可塑性樹脂から成る場合、前記絶縁層を再加熱し、前記電子部品を分離することによって前記電子部品の再使用を可能にしたことを特徴とする請求項14に記載の電子部品組込み型印刷回路基板の製造方法。 - 前記金属シード層は、蒸着、無電解メッキまたはスパッタリングで薄い金属膜によって設けられることを特徴とする請求項14に記載の電子部品組込み型印刷回路基板の製造方法。
- 前記メッキ層は、電解メッキによって所定の厚さに設けられ、銀または銅の金属材質から成ることを特徴とする請求項14に記載の電子部品組込み型印刷回路基板の製造方法。
- 絶縁層に電子部品を押込み、該絶縁層上に電子部品の一部が露出するように該電子部品を実装するステップと、
前記絶縁層を硬化させ、前記電子部品を固定するステップと、
前記電子部品の露出表面を含めて前記絶縁層の上面に伝導性ペースト層を設けるステップと、
前記絶縁層上に前記電子部品のパッドと対応する位置にビアホールを設け、該パッドと電気的に導通される回路パターンを設けるステップと、
前記回路パターンと電気的に接続されるビアホールが設けられたソルダーレジスト層を設けるステップと、
を含むことを特徴とする電子部品組込み型印刷回路基板の製造方法。 - 前記ソルダーレジストを設けるステップの後に、
前記回路パターンと電気的に接続された前記ビアホールの形成個所にソルダーボールを設けるステップを、さらに含むことを特徴とする請求項24に記載の電子部品組込み型印刷回路基板の製造方法。 - 前記絶縁層は、熱可塑性樹脂、熱硬化性樹脂、UV硬化樹脂またはこれらの混合樹脂から成ることを特徴とする請求項24に記載の電子部品組込み型印刷回路基板の製造方法。
- 前記絶縁層上に前記電子部品を実装するステップにおいて、
前記絶縁層の下面に、金属材質のテープまたはホイルが設けられることを特徴とする請求項24に記載の電子部品組込み型印刷回路基板の製造方法。 - 前記絶縁層を硬化させ、前記電子部品を固定するステップの後に、
前記絶縁層が熱可塑性樹脂から成る場合、前記絶縁層を再加熱し、前記電子部品を分離することによって該電子部品の再使用を可能にしたことを特徴とする請求項24に記載の電子部品組込み型印刷回路基板の製造方法。 - 前記伝導性ペースト層は、熱伝導効率の良いペーストと接着剤とが混合された形態の銀ペーストまたは銅ペーストから成ることを特徴とする請求項24に記載の電子部品組込み型印刷回路基板の製造方法。
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