JP5778557B2 - 半導体装置の製造方法、半導体装置、及び半導体素子 - Google Patents
半導体装置の製造方法、半導体装置、及び半導体素子 Download PDFInfo
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- JP5778557B2 JP5778557B2 JP2011259423A JP2011259423A JP5778557B2 JP 5778557 B2 JP5778557 B2 JP 5778557B2 JP 2011259423 A JP2011259423 A JP 2011259423A JP 2011259423 A JP2011259423 A JP 2011259423A JP 5778557 B2 JP5778557 B2 JP 5778557B2
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- 239000004065 semiconductor Substances 0.000 title claims description 105
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910000679 solder Inorganic materials 0.000 claims description 94
- 238000000034 method Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 10
- 239000010408 film Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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Description
図1(a)及び図1(b)に示すように、半導体素子10は、配線基板20の上面(図1(b)参照)に実装されている。
図2(a)及び図3(a)に示すように、電極パッド11上に立設された電極端子13の先端面には、略半球状のはんだ31が形成される。はんだ31は、例えば、半田リフロー処理により形成される。
(1)半導体素子10の一主面には複数の電極パッド11が、半導体素子10の外周に沿って矩形枠状に配列されている。各電極パッド11には、柱状の電極端子13が立設されている。各電極端子13の中心軸L1は、電極パッド11の中心から、電極パッド11の配列方向と直交する方向に沿って半導体素子10の外側にずれた位置に形成されている。半導体素子10が実装される配線基板20には、半導体素子10の電極パッド11と対応する複数の接続パッド22が形成されている。各接続パッド22の中心L2は、半導体素子10の電極パッド11の中心と略一致する。また、各接続パッド22は、配列方向と直交する方向、即ち半導体素子10の外周と直交する方向に沿って延びる矩形状に形成されている。
・上記実施形態に対し、電極端子のずれ量、ずれの方向を適宜変更してもよい。
例えば、図5(a)に示すように、半導体素子10aの電極端子13の中心軸は、電極パッド11の中心から、半導体素子10aの外側方向に、電極端子13の半径分ずれた位置に形成されている。なお、電極パッド11の中心に対する電極端子13の中心軸のずれ量を、電極端子13の半径分より大きく設定してもよい。このように配置された電極端子13は、上記実施形態と同様に、図5(b)に示すように、配線基板20の接続パッド22上面に形成されたはんだを、半導体素子10aの内側方向に移動させる。これにより、隣合う2つの接続パッド22間におけるはんだによる短絡不良の発生を低減する。
対向する2つの辺に沿って配列されたパッドの数が互いに異なる場合、各々の電極端子13に働く引っ張り力(表面張力)が不均等となる。しかし、電極端子13が接続パッド22上に披着したはんだの頂点から何れか一方側にずれて形成される状態が保たれるのであれば、上記実施形態と同様の効果が得られる。
・上記実施形態では、電極端子13を円柱状としたが、矩形柱状に形成してもよい。また、多角形柱状としてもよい。
11 電極パッド
13 電極端子
20 配線基板
22 接続パッド
30〜32 はんだ
L1 中心軸
L2 中心
Claims (10)
- 複数の電極パッドが外周に沿って矩形枠状に配列された半導体素子と、前記半導体素子の各々の電極パッドに対応して形成された複数の接続パッドを有する配線基板と、を有する半導体装置の製造方法であって、
前記複数の接続パッドは、対応する前記電極パッドの配列方向と直交する方向に沿って延びる長方形状に形成され、
前記複数の接続パッドの上面に、中央部が膨出するようにはんだを披着し、
前記半導体素子の電極パッドに立設されて前記接続パッドと接続される柱状の電極端子を、前記矩形枠状に配列された複数の電極パッドのうち、前記半導体素子の一辺に沿って配列された複数の第1の電極パッドに対応する複数の第1の電極端子を前記接続パッドの長手方向に沿って前記第1の電極パッドの中心から全て前記半導体素子の内側と外側のうちの何れか一方の方向にずらして前記第1の電極パッド上に形成し、前記一辺と対向する他辺に沿って配列された複数の第2の電極パッドに対応する複数の第2の電極端子を前記接続パッドの長手方向に沿って全て前記半導体素子の内側と外側のうち前記第1の電極端子と同じ方向にずらして前記第2の電極パッド上に形成し、
前記接続パッドに前記電極端子を前記はんだにより電気的に接続する、
ことを特徴とする半導体装置の製造方法。 - 前記電極端子の先端面にはんだを形成し、
前記接続パッド上のはんだと、前記電極端子先端のはんだとにより、前記接続パッドに前記電極端子を接続する、
ことを特徴とする請求項1記載の半導体装置の製造方法。 - 複数の前記電極端子を、前記電極パッドの中心から、前記半導体素子の外側にずれた位置に形成する、ことを特徴とする請求項1又は2に記載の半導体装置の製造方法。
- 複数の前記電極端子を、前記電極パッドの中心から、前記半導体素子の内側にずれた位置に形成する、ことを特徴とする請求項1又は2に記載の半導体装置の製造方法。
- 前記はんだは、前記電極パッドの中心から見た前記電極端子のずれ方向とは反対の方向に移動することを特徴とする請求項1〜4のいずれか一項に記載の半導体装置の製造方法。
- 複数の電極パッドが外周に沿って矩形枠状に配列された半導体素子と、
前記半導体素子の各々の電極パッドに対応し、対応する前記電極パッドの配列方向と直交する方向に沿って延びる長方形状に形成された複数の接続パッドを有する配線基板と、
前記半導体素子の電極パッドに接続され、その中心軸が前記電極パッドの中心から前記電極パッドの配列方向と直交する方向に沿って、内側と外側の何れか一方にずれた位置に形成された柱状の電極端子と、
前記接続パッドと前記電極端子とを互いに電気的に接続するはんだと、
を有し、
前記矩形枠状に配列された複数の電極パッドのうち、前記半導体素子の一辺に沿って配列された複数の第1の電極パッドに対応する複数の第1の電極端子は、前記接続パッドの長手方向に沿って前記第1の電極パッドの中心から全て前記半導体素子の内側と外側のうちの何れか一方の方向にずれて形成され、前記一辺と対向する他辺に沿って配列された複数の第2の電極パッドに対応する複数の第2の電極端子は、前記接続パッドの長手方向に沿って前記第2の電極パッドの中心から全て前記半導体素子の内側と外側のうち前記第1の電極端子と同じ方向にずれて形成されること、
を特徴とする半導体装置。 - 複数の前記電極端子は、前記電極パッドの中心から、前記半導体素子の外側にずれた位置に形成された、ことを特徴とする請求項6に記載の半導体装置。
- 複数の前記電極端子は、前記電極パッドの中心から、前記半導体素子の内側にずれた位置に形成された、ことを特徴とする請求項6に記載の半導体装置。
- 前記はんだは、前記電極パッドの中心から見た前記電極端子のずれ方向とは反対の方向に移動することを特徴とする請求項6〜8のいずれか一項に記載の半導体装置。
- 配線基板に実装される半導体素子であって、
前記配線基板は、
前記半導体素子の各々の電極パッドに対応し、対応する前記電極パッドの配列方向と直交する方向に沿って延びる長方形状に形成された複数の接続パッドを有し、
前記半導体素子は、
外周に沿って矩形枠状に配列された複数の電極パッドと、
前記電極パッドに接続され、前記電極パッドの中心から、前記電極パッドの配列方向と直交する方向に沿って、内側と外側の何れか一方にずれた位置に形成された柱状の電極端子と、
を有し、
前記矩形枠状に配列された複数の電極パッドのうち、前記外周の一辺に沿って配列された複数の第1の電極パッドに対応する複数の第1の電極端子は、前記第1の電極パッドの中心から全て内側と外側のうちの何れか一方の方向にずれて形成され、前記外周の一辺と対向する他辺に沿って配列された複数の第2の電極パッドに対応する複数の第2の電極端子は、前記第2の電極パッドの中心からの全て内側と外側のうち前記第1の電極端子と同じ方向にずれて形成されること、
を特徴とする半導体素子。
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