JP5289830B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5289830B2 JP5289830B2 JP2008149145A JP2008149145A JP5289830B2 JP 5289830 B2 JP5289830 B2 JP 5289830B2 JP 2008149145 A JP2008149145 A JP 2008149145A JP 2008149145 A JP2008149145 A JP 2008149145A JP 5289830 B2 JP5289830 B2 JP 5289830B2
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- 230000001681 protective effect Effects 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 4
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- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 241000237509 Patinopecten sp. Species 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 235000020637 scallop Nutrition 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910005569 NiB Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
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- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Description
前記基板の一面側に位置する導電パターンと、
前記基板に形成され、前記導電パターンの下に位置する貫通孔と、
前記貫通孔の前記一面側の底面に位置する絶縁層と、
前記絶縁層に形成され、周から前記貫通孔の中心軸までの距離が前記貫通孔より小さく、前記貫通孔の底面に前記導電パターンを露出させる開口パターンと、
前記開口パターン内及び前記貫通孔内に形成され、前記導電パターンに接続する貫通電極と、
前記基板の前記一面の反対面側に位置し、前記貫通電極と一体に形成されたバンプと、
を備える半導体装置が提供される。
前記絶縁層に、周から前記貫通孔の中心軸までの距離が前記貫通孔より小さい開口パターンを形成して、前記導電パターンを前記貫通孔の底部に露出させる工程と、
前記導電パターンをシード層とした無電解めっきを行うことにより、前記開口パターン内及び前記貫通孔内に位置する貫通電極と、前記基板の前記反対面側に位置するバンプとを連続的に形成する工程と、
を備える半導体装置の製造方法が提供される。
図1は、第1の実施の形態における半導体装置の構成を示す断面図である。この半導体装置は、基板100、貫通孔102、導電パターン120、絶縁層110、開口パターン112、貫通電極300、及びバンプ302を備える。基板100は、例えばシリコン基板などの半導体基板である。貫通孔102は、基板100に形成され、導電パターン120の下に位置している。本図に示す例において、貫通孔102はストレート形状である。
(r2−r1)=(h−(r1−r3))×(1±0.3)・・・(1)
ただし、hはバンプ302の高さである。
図5の各図は、第2の実施形態にかかる半導体装置の製造方法を示す断面図である。この半導体装置の製造方法は、貫通孔102の形状を除いて、第1の実施形態に示した半導体装置の製造方法と同様の構成である。なお、図5(a)は第1の実施形態における図2(b)の状態を示しており、図5(b)は第1の実施形態における図1の状態を示している。
図7の各図は、第3の実施形態にかかる半導体装置の製造方法を示す断面図である。この半導体装置の製造方法は、貫通孔102の形状及び貫通孔102の形成方法を除いて、第1の実施形態にかかる半導体装置の製造方法と同様である。なお、図7(a)及び図7(b)は、貫通孔102の製造方法を示しており、図7(c)は第1の実施形態における図4(c)の状態を示している。
図8の各図は、第4の実施形態にかかる半導体装置の製造方法を示す断面図である。この半導体装置の製造方法は、開口パターン112の代わりに絶縁膜130に形成された開口パターン132を用いる点を除いて、第1の実施形態にかかる半導体装置の製造方法と同様である。以下、第1の実施形態と同様の工程については説明を省略する。
図9の各図は、第5の実施形態にかかる半導体装置の製造方法を示す断面図である。この半導体装置の製造方法は、開口パターン112の形成タイミングを除いて、第1の実施形態にかかる半導体装置の製造方法と同様である。以下、第1の実施形態と同様の工程については説明を省略する。
図10は、第6の実施形態にかかる半導体装置を示す断面図である。この半導体装置は、貫通孔102がテーパ形状を有しており、中心軸から周までの距離が上端に近づくにつれて大きくなる点を除いて、第1の実施形態と同様である。この半導体装置の製造方法も、貫通孔102を形成するときのエッチング条件を調節して貫通孔102がテーパ形状を有するようにする点を除いて、第1の実施形態と同様である。
図11は、第7の実施形態にかかる半導体装置を示す断面図である。この半導体装置は、貫通孔102が逆テーパ形状を有しており、中心軸から周までの距離が上端に近づくにつれて小さくなる点を除いて、第1の実施形態と同様である。この半導体装置の製造方法も、貫通孔102を形成するときのエッチング条件を調節して貫通孔102が逆テーパ形状を有するようにする点を除いて、第1の実施形態と同様である。
102 貫通孔
102a 溝
104 保護膜
110 絶縁層
112 開口パターン
120 導電パターン
130 絶縁膜
132 開口パターン
200 層
300 貫通電極
302 バンプ
50 マスクパターン
52 マスクパターン
54 マスクパターン
56 マスクパターン
Claims (7)
- 第1主面と前記第1主面とは反対側の第2主面を有する基板と、
前記第1主面上に第1絶縁層を介して形成された導電パターンと、
断面視において、前記基板の前記第1主面から前記第2主面まで貫通し、前記第1主面上に第1開口部を、前記第2主面上に第2開口部を有し、前記第1絶縁層に達する貫通孔と、
前記貫通孔の側壁に形成された第2絶縁層と、
前記貫通孔内に前記第2絶縁層を介して形成された貫通電極と、
前記第2主面上に形成され、前記第2開口部を介して、前記貫通電極に接続されたバンプ電極と、
を備え、
前記第1絶縁層は前記第1開口部の内部に前記導電パターンを露出する第3開口部を有し、
前記貫通電極と前記導電パターンは前記第1開口部を介して接続され、
断面視において、前記第1開口部の長さと、前記第3開口部の長さとの差は2μm以上6μm以下である半導体装置。 - 請求項1に記載の半導体装置において、
前記基板は半導体基板である半導体装置。 - 請求項1又は2に記載の半導体装置において、
前記第2主面上に形成された第3絶縁層を備え、
前記第3絶縁層は、前記2開口部の周辺部において、前記第2絶縁層と接続されている半導体装置。 - 請求項1〜3のいずれか一項に記載の半導体装置において、
前記第3開口部の周辺部から前記貫通孔の仮想中心軸までの長さと、前記貫通孔の周辺部から前記貫通孔の仮想中心軸までの長さとの差は1μm以上3μm以下である半導体装置。 - 第1主面と前記第1主面とは反対側の第2主面を有する基板と、
前記第1主面上に第1絶縁層を介して形成された導電パターンと、
断面視において、前記基板の前記第1主面から前記第2主面まで貫通し、前記第1主面上に第1開口部を、前記第2主面上に第2開口部を有し、前記第1絶縁層に達する貫通孔と、
前記貫通孔の側壁に形成された第2絶縁層と、
前記第2主面上に形成され、前記第2開口部の周辺部で前記第2絶縁層と接続された第3絶縁層と、
前記貫通孔内に前記第2絶縁層を介して形成された貫通電極と、
前記第3絶縁層上に形成され、前記第2開口部を介して、前記貫通電極に接続されたバンプ電極と、を備え、
前記第1絶縁層は前記第1開口部の内部に前記導電パターンを露出する第3開口部を有し、
前記貫通電極と前記導電パターンは前記第1開口部を介して接続され、
断面視において、前記貫通孔の仮想の中心軸から前記第1開口部の周辺部までの長さをr1、前記貫通孔の仮想の中心軸から前記バンプ電極と前記第3絶縁層が接する前記バンプ電極の底面の周辺部までの距離をr2、前記貫通孔の仮想の中心軸から前記第3開口部の周辺部までの長さをr3、前記第3絶縁層からの前記バンプ電極の高さをhとした場合に、下記式を満たす半導体装置。
(r2−r1)=(h−(r1−r3))×(1±0.3) - 請求項5に記載の半導体装置において、
前記基板は半導体基板である半導体装置。 - 請求項5又は6に記載の半導体装置において、前記第3開口部の周辺部から前記貫通孔の仮想中心軸までの長さと、前記貫通孔の周辺部から前記貫通孔の仮想中心軸までの長さと、の差は1μm以上3μm以下である半導体装置。
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CN2009101460247A CN101599477B (zh) | 2008-06-06 | 2009-06-05 | 半导体装置及制造该半导体装置的方法 |
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