JP4920335B2 - キャパシタ内蔵インターポーザ及びその製造方法と電子部品装置 - Google Patents
キャパシタ内蔵インターポーザ及びその製造方法と電子部品装置 Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title claims description 193
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- 229910052751 metal Inorganic materials 0.000 claims description 93
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- 239000004065 semiconductor Substances 0.000 claims description 51
- 229910000679 solder Inorganic materials 0.000 claims description 38
- 238000007747 plating Methods 0.000 claims description 36
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 24
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
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- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910017107 AlOx Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- 229910003087 TiOx Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
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- 239000003985 ceramic capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
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- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 125000002524 organometallic group Chemical group 0.000 description 1
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- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Description
図2〜図4は本発明の第1実施形態のキャパシタ内蔵インターポーザの製造方法を示す断面図、図5は同じくキャパシタ内蔵インターポーザを示す断面図である。
図8〜図11は本発明の第2実施形態のキャパシタ内蔵インターポーザの製造方法を示す断面図、図12は同じくキャパシタ内蔵インターポーザを示す断面図である。前述した第1実施形態では、複数の球状導体20xを銅板10上の錫層12にエリアアレイ型で配置すること基づいて、全ての球状導体20xから球状のキャパシタCを形成している。通常、半導体チップ45は信号ラインなどを備えているので、第1実施形態では、半導体チップ45と配線基板30の間にバンプ45aを別途配置することによって半導体チップ45の信号ラインなどの導通経路を確保している。
図15及び図16は本発明の第3実施形態のキャパシタ内蔵インターポーザの製造方法を示す断面図である。第3実施形態の特徴は、銅板に設けた凹部にはんだ層を充填しておき、はんだ層に銅ポストを埋め込むことに基づいて、最終的にはんだ層を銅ポストの被覆層として利用することにある。第3実施形態では、第2実施形態と同一工程においてはその詳しい説明を省略する。
Claims (10)
- 厚み方向に貫通する開口部を備えたベース樹脂層と、
前記ベース樹脂層を貫通して設けられて前記開口部に埋め込まれ、前記開口部から上側及び下側に突出する突出部をそれぞれ備え、前記ベース樹脂層の一方の面側の前記突出部が接続部となるキャパシタ用の第1電極と、
前記ベース樹脂層の他方の面側の前記第1電極の前記突出部を被覆する前記キャパシタ用の誘電体層と、
前記誘電体層を被覆する前記キャパシタ用の第2電極とを有し、
前記第1電極、前記誘電体層及び前記第2電極から構成される複数の前記キャパシタが前記ベース樹脂層を貫通した状態で横方向に並んで配置されていることを特徴とするキャパシタ内蔵インターポーザ。 - 前記ベース樹脂層を貫通して設けられ、前記ベース樹脂層の両面側から突出する突出部をそれぞれ備えた貫通電極をさらに有することを特徴とする請求項1に記載のキャパシタ内蔵インターポーザ。
- 前記ベース樹脂層を貫通して設けられ、前記ベース樹脂層の両面側から突出する突出部をそれぞれ備え、前記ベース樹脂層の一方の面側の前記突出部が接続部となる第1電極と、前記ベース樹脂層の他方の面側の前記第1電極を被覆する絶縁層と、前記絶縁層を被覆する第2電極とにより構成される抵抗部をさらに有することを特徴とする請求項1又は2に記載のキャパシタ内蔵インターポーザ。
- 前記ベース樹脂層の前記第2電極が形成された面側の前記突出部は、先端部が凸状曲面となっていることを特徴とする請求項1乃至3のいずれか一項に記載のキャパシタ内蔵インターポーザ。
- 配線層を備えた配線基板と、
前記配線基板の上に配置され、前記第2電極と前記貫通電極の一端側が前記配線基板の前記配線層に電気的に接続された請求項1乃至4のいずれかに記載のキャパシタ内蔵インターポーザと、
前記キャパシタ内蔵インターポーザの上に配置され、前記第1電極の前記接続部と前記貫通電極の他端側とに電気的に接続された半導体チップとを有することを特徴とする電子部品装置。 - 一方の面に複数の金属ポストが立設されたベース樹脂層と、一方の面に柔軟金属層が形成された金属支持体とを用意する工程と、
前記金属支持体上の前記柔軟金属層に、前記ベース樹脂層上の前記金属ポストを押し込んで前記金属支持体と前記ベース樹脂層とを貼り合わせることにより、前記金属ポストを前記柔軟金属層に埋め込む工程と、
所要の前記金属ポスト上の前記ベース樹脂層の部分に第1めっき用開口部を形成する工程と、
前記金属支持体、前記柔軟金属層及び前記金属ポストをめっき給電経路に利用する電解めっきにより、前記第1めっき開口部に前記ベース樹脂層の上面から突出する金属バンプを形成して前記金属ポスト及び前記金属バンプから構成される第1電極を得る工程と、
前記第1電極を被覆する誘電体層を形成する工程と、
前記誘電体層を被覆する第2電極を形成してキャパシタを得る工程と、
前記金属支持体及び前記柔軟金属層を除去して前記金属ポストを露出させる工程とを有することを特徴とするキャパシタ内蔵インターポーザの製造方法。 - 一方の面側に複数の金属ポストが立設されたベース樹脂層と、前記金属ポストに対応する部分に凹部が形成され、前記凹部に柔軟金属層が埋め込まれた金属支持体とを用意する工程と、
前記金属支持体に形成された前記柔軟金属層に、前記ベース樹脂層上の前記金属ポストを押し込んで前記金属支持体と前記ベース樹脂層とを貼り合わせることにより、前記金属ポストを前記柔軟金属層に埋め込む工程と、
所要の前記金属ポスト上の前記ベース樹脂層の部分に第1めっき用開口部を形成する工程と、
前記金属支持体、前記柔軟金属層及び前記金属ポストをめっき給電経路に利用する電解めっきにより、前記第1めっき開口部に前記ベース樹脂層の上面から突出する金属バンプを形成して前記金属ポスト及び前記金属バンプから構成される第1電極を得る工程と、
前記第1電極を被覆する誘電体層を形成する工程と、
前記誘電体層を被覆する第2電極を形成してキャパシタを得る工程と、
前記金属支持体を除去して前記柔軟金属層で被覆された前記金属ポストを露出させる工程とを有することを特徴とするキャパシタ内蔵インターポーザの製造方法。 - 前記複数の金属ポスト上の前記ベース樹脂層の各部分には前記キャパシタの形成領域の他に貫通電極の形成領域が画定されており、
前記キャパシタを得る工程の後であって、金属支持体を除去する工程の前に、
所要の前記金属ポスト上の前記ベース樹脂層の部分に前記貫通電極形成用の第2めっき用開口部を形成する工程と、
前記第2めっき用開口部を含む領域に開口部が設けられたレジストを形成して前記キャパシタを前記レジストで被覆する工程と、
前記金属支持体、前記柔軟金属層及び前記金属ポストをめっき給電経路に利用する電解めっきにより、前記第2めっき用開口部に前記ベース樹脂層の上面から突出する金属バンプを形成して前記金属ポスト及び前記金属バンプから構成される前記貫通電極を得る工程と、
前記レジストを除去する工程とをさらに有することを特徴とする請求項6又は7に記載のキャパシタ内蔵インターポーザの製造方法。 - 前記金属支持体は銅からなって、前記柔軟金属層は錫からなり、
前記金属支持体及び前記柔軟金属層を除去する工程の後に、露出する前記金属ポストを被覆するはんだ層を形成する工程をさらに有することを特徴とする請求項6に記載のキャパシタ内蔵インターポーザの製造方法。 - 前記金属支持体は銅からなり、前記柔軟金属層ははんだからなることを特徴とする請求項7に記載のキャパシタ内蔵インターポーザの製造方法。
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CNA2007101397441A CN101123853A (zh) | 2006-08-07 | 2007-07-30 | 内置有电容器的互连体及其制造方法以及电子元件装置 |
US11/882,646 US7755910B2 (en) | 2006-08-07 | 2007-08-03 | Capacitor built-in interposer and method of manufacturing the same and electronic component device |
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