JP2009071045A - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP2009071045A JP2009071045A JP2007238014A JP2007238014A JP2009071045A JP 2009071045 A JP2009071045 A JP 2009071045A JP 2007238014 A JP2007238014 A JP 2007238014A JP 2007238014 A JP2007238014 A JP 2007238014A JP 2009071045 A JP2009071045 A JP 2009071045A
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Abstract
【解決手段】半導体基板11と、半導体基板11上に配されるとともに、少なくとも1以上の第1配線層、少なくとも1以上の第1絶縁層、及び第1ビアを有する第1配線構造体12と、第1配線構造体12上に配されるとともに、少なくとも1以上の第2配線層15、少なくとも1以上の第2絶縁層14、第2ビア16、及び第3ビア19を有する第2配線構造体17と、第2配線構造体17上に設けられた外部端子18と、を備える半導体装置において、第2配線構造体17の第2配線層15と外部端子18に接合される第2ビア16は、外部端子18側の端部に接合界面16aが配されている。
【選択図】図1
Description
12 第1配線構造体
13 パッシベーション膜
14 第2絶縁層
15 第2配線層
16 第2ビア
16a 接合界面
17 第2配線構造体
18 外部端子
19 第3ビア
20 オーバーコート膜
21 ゲート電極
22 ソース電極
23 ドレイン電極
24 MOSトランジスタ
25 プラグ
26 第1配線層
27 第1絶縁層
28 配線
29 絶縁膜
30 第1ビア
31 空きエリア
32 給電層
33 めっきレジスト
34、35 電解めっき
36 金属ポスト
37 密着層
38 配線矯正領域
39 応力集中部位
Claims (24)
- 半導体基板と、
前記半導体基板上に配されるとともに、少なくとも1以上の第1配線層、少なくとも1以上の第1絶縁層、及び第1ビアを有する第1配線構造体と、
前記第1配線構造体上に配されるとともに、少なくとも1以上の第2配線層、少なくとも1以上の第2絶縁層、第2ビア、及び第3ビアを有する第2配線構造体と、
前記第2配線構造体上に設けられた外部端子と、
を備える半導体装置において、
前記第2配線構造体の前記第2配線層と前記外部端子に接合される前記第2ビアは、前記外部端子側の端部に接合界面が配されていることを特徴とする半導体装置。 - 前記第2配線構造体に設けられる全ての前記第2ビアは、前記外部端子側の端部に接合界面が配されていることを特徴とする請求項1記載の半導体装置。
- 前記第2ビアは、前記半導体基板側の端部が前記第2配線層と一体化されていることを特徴とする請求項1又は2記載の半導体装置。
- 前記第2ビアは、前記半導体基板側の前記第2配線層上にめっき法によって形成されたことを特徴とする請求項3記載の半導体装置。
- 前記第2配線層は、前記半導体基板側の面に密着層を有することを特徴とする請求項1乃至4のいずれか一に記載の半導体装置。
- 前記第2配線層は、前記第1配線層より厚いことを特徴とする請求項1乃至5のいずれか一に記載の半導体装置。
- 前記第2絶縁層は、前記第1絶縁層より厚いことを特徴とする請求項1乃至6のいずれか一に記載の半導体装置。
- 前記第2絶縁層の弾性率は、前記第1配線層の弾性率より低いことを特徴とする請求項1乃至7のいずれか一に記載の半導体装置。
- 前記第2絶縁層の25℃の弾性率は、1GPa以上かつ8GPa以下であることを特徴とする請求項1乃至8のいずれか一に記載の半導体装置。
- 前記第2ビア及び前記第3ビアは、接合界面に前記密着層を有することを特徴とする請求項5乃至9のいずれか一に記載の半導体装置。
- 前記第3ビアの前記半導体基板側の断面積をaとし、前記第3ビアの前記第2配線側の断面積をbとし、前記第2配線構造体に設けられる前記第2ビアの前記半導体基板側の断面積をcとし、かつ、前記第2配線構造体に設けられる前記第2ビアの前記外部端子側の断面積をdとした場合、(b/a)>(d/c)の関係にあることを特徴とする請求項1乃至10のいずれか一に記載の半導体装置。
- 前記第1配線層および第2配線層は、銅、アルミニウム、ニッケル、金及び銀からなる群から選択された少なくとも1種の金属又は合金よりなることを特徴とする請求項1乃至11のいずれか一に記載の半導体装置。
- 前記外部端子の表面は、銅、アルミニウム、金、銀及び半田材料からなる群から選択された少なくとも1種の金属又は合金よりなることを特徴とする請求項1乃至12のいずれか一に記載の半導体装置。
- 前記密着層は、チタン、タングステン、ニッケル、タンタル、バナジウム、クロム、モリブデン、銅、アルミニウムからなる群れから選択された少なくとも1種の金属又は合金よりなることを特徴とする請求項1乃至13のいずれか一に記載の半導体装置。
- 前記第2絶縁層は、有機樹脂からなることを特徴とする請求項1乃至14のいずれか一に記載の半導体装置。
- 前記第1配線構造体と前記第2絶縁層との間に前記第3ビアが設けられたパッシベーション膜が介在することを特徴とする請求項1乃至15のいずれか一に記載の半導体装置。
- 前記パッシベーション膜は、有機樹脂よりなることを特徴とする請求項16記載の半導体装置。
- 前記第2配線構造体において、複数の電源系配線をまとめることで外部端子数を少なくすることを特徴とする請求項1乃至17のいずれか一に記載の半導体装置。
- 前記第2配線構造体において、複数のグランド系配線をまとめることで外部端子数を少なくすることを特徴とする請求項1乃至18のいずれか一に記載の半導体装置。
- 半導体素子が形成された半導体基板上に第1絶縁層と第1配線層と第1ビアを有する第1配線構造体を形成する工程と、
前記第1配線構造体上に第2絶縁層と第2配線層と第2ビア及び第3ビアを有する第2配線構造体を形成する工程と、
前記第2配線構造体上に外部端子を形成する工程と、
を含む半導体装置の製造方法において、
前記第2配線構造体を形成する工程では、
前記第2配線層を形成する工程と、
前記第2配線層上に前記第2ビアとなる金属ポストを形成する工程と、
前記第2配線層と前記金属ポストとを前記第2絶縁層にて覆う工程と、
前記第2絶縁層の表面を研磨することで前記金属ポストを露出させる工程と、
を含むことを特徴とする半導体装置の製造方法。 - 前記金属ポストを形成する工程では、めっき法により前記第2配線層上に前記金属ポストを形成することを特徴とする請求項20記載の半導体装置の製造方法。
- 前記第1配線構造体を形成する工程と前記第2配線構造体を形成する工程の間に、パッシベーション膜を形成する工程を含むことを特徴とする請求項20又は21記載の半導体装置の製造方法。
- 前記第2配線層を形成する工程の前に電解めっきにより給電層を形成する工程を含むことを特徴とする請求項20乃至22のいずれか一に記載の半導体装置の製造方法。
- 前記金属ポストを露出させる工程では、CMPを用いて前記第2絶縁層の表面を研磨することを特徴とする請求項20乃至23のいずれか一に記載の半導体装置の製造方法。
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US8072073B2 (en) | 2011-12-06 |
CN101388373A (zh) | 2009-03-18 |
US20090072404A1 (en) | 2009-03-19 |
JP4953132B2 (ja) | 2012-06-13 |
CN101388373B (zh) | 2013-09-25 |
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