JP6904055B2 - 半導体ic内蔵基板及びその製造方法 - Google Patents
半導体ic内蔵基板及びその製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 115
- 239000000758 substrate Substances 0.000 title claims description 55
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 239000004020 conductor Substances 0.000 claims description 89
- 239000011888 foil Substances 0.000 claims description 65
- 239000000463 material Substances 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 33
- 238000000059 patterning Methods 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 182
- 238000010586 diagram Methods 0.000 description 14
- 239000011347 resin Substances 0.000 description 13
- 229920005989 resin Polymers 0.000 description 13
- 239000010949 copper Substances 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Description
11〜13 絶縁層
11a 第1の絶縁層の上面
12a 第2の絶縁層の下面
21〜24 配線層
21a 第1の配線層の上面
21s 信号配線
31〜34 スルーホール導体
40 半導体IC
41 ダイアタッチフィルム
41a ダイアタッチフィルムの裏面
42 端子電極
50,A〜C 積層体
51 基材
52,53 導体箔
61〜64 開口部
71〜74 スルーホール
80,90 絶縁層
81,82,91 配線層
V ボイド
Claims (10)
- 第1の絶縁層と、
前記第1の絶縁層に埋め込まれ、上面が前記第1の絶縁層の上面から露出するとともに前記第1の絶縁層の前記上面と同一平面を構成する第1の配線層と、
裏面に接着されたダイアタッチ材を介して前記第1の配線層の前記上面に配置された半導体ICと、
前記半導体ICを埋め込むよう、前記第1の配線層の前記上面に積層され、前記半導体ICの前記裏面の反対側に位置する上面を覆う第2の絶縁層と、
前記第2の絶縁層の上面に形成された第2の配線層と、
前記第2の絶縁層を貫通して設けられ、前記第1の配線層と前記第2の配線層を接続する第1のスルーホール導体と、
前記第2の絶縁層を貫通して設けられ、前記第2の配線層と前記半導体ICの前記上面に設けられた端子電極を接続する第2のスルーホール導体と、を備え、
前記ダイアタッチ材の裏面は、前記第1の絶縁層の前記上面及び前記第1の配線層の前記上面の両方と接していることを特徴とする半導体IC内蔵基板。 - 前記ダイアタッチ材の前記裏面は、前記第1の配線層を構成する複数の信号配線と接していることを特徴とする請求項1に記載の半導体IC内蔵基板。
- 前記第1の絶縁層の下面に形成された第3の配線層と、
前記第1の絶縁層を貫通して設けられ、前記第1の配線層と前記第3の配線層を接続する第3のスルーホール導体と、をさらに備えることを特徴とする請求項1又は2に記載の半導体IC内蔵基板。 - 前記第2の配線層を埋め込むよう、前記第2の絶縁層の前記上面に積層された第3の絶縁層と、
前記第3の絶縁層の上面に形成された第4の配線層と、
前記第3の絶縁層を貫通して設けられ、前記第2の配線層と前記第4の配線層を接続する第4のスルーホール導体と、をさらに備えることを特徴とする請求項3に記載の半導体IC内蔵基板。 - 前記ダイアタッチ材は、前記半導体ICの裏面に接着されたダイアタッチフィルムであることを特徴とする請求項1乃至4のいずれか一項に記載の半導体IC内蔵基板。
- 前記ダイアタッチフィルムは、前記半導体ICを構成するシリコンよりも厚いことを特徴とする請求項5に記載の半導体IC内蔵基板。
- 基材と導体箔の積層体を用意し、ダイアタッチ材を介して前記導体箔上に半導体ICを搭載する第1の工程と、
前記半導体ICを埋め込むよう、前記導体箔上に第2の絶縁層を形成する第2の工程と、
前記基材を除去する第3の工程と、
前記導体箔をパターニングすることにより、第1の配線層を形成する第4の工程と、
前記第1の配線層を埋め込むよう、前記第2の絶縁層の下面に第1の絶縁層を形成する第5の工程と、を備え、
前記第4の工程においては、前記ダイアタッチ材の裏面の一部が前記第1の配線層で覆われ、且つ、前記ダイアタッチ材の前記裏面の残りの部分が露出するよう、前記導体箔をパターニングし、これにより、前記ダイアタッチ材の前記裏面の前記残りの部分は、前記第1の絶縁層と接することを特徴とする半導体IC内蔵基板の製造方法。 - 前記導体箔は、前記基材の表面にこの順に積層された第1及び第2の導体箔からなり、
前記第3の工程においては、前記第1の導体箔と前記第2の導体箔の界面を剥離し、これにより前記第2の導体箔を前記第1の配線層の材料とすることを特徴とする請求項7に記載の半導体IC内蔵基板の製造方法。 - 前記第2の導体箔は、前記第1の導体箔よりも厚いことを特徴とする請求項8に記載の半導体IC内蔵基板の製造方法。
- 前記第2の工程を行った後、前記第2の絶縁層を貫通し前記導体箔を露出させる第1のスルーホールと、前記第2の絶縁層を貫通し前記半導体ICの端子電極を露出させる第2のスルーホールを形成する工程をさらに備えることを特徴とする請求項7乃至9のいずれか一項に記載の半導体IC内蔵基板の製造方法。
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