JP2011071317A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP2011071317A JP2011071317A JP2009221116A JP2009221116A JP2011071317A JP 2011071317 A JP2011071317 A JP 2011071317A JP 2009221116 A JP2009221116 A JP 2009221116A JP 2009221116 A JP2009221116 A JP 2009221116A JP 2011071317 A JP2011071317 A JP 2011071317A
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- Prior art keywords
- bump
- wire
- pad
- semiconductor chip
- wires
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
【解決手段】半導体装置が有する半導体チップ10の主面(第1主面)10a上に形成されるパッド(電極パッド)11上に、銅製のワイヤ30の一方の端部(幅広部30b)を、バンプ31を介して接合した構造とする。バンプ31は、銅よりも硬度が低い金属材料である金からなり、バンプ31の幅Wcは、ワイヤ30の幅広部30bの幅Wbよりも狭くなっている。
【選択図】図5
Description
第1主面、前記第1主面の反対側に位置する第1裏面、前記第1主面上に形成される複数の電極パッドを有する半導体チップと、
前記半導体チップの周囲に配置される複数の第1端子と、
前記複数の電極パッドと前記複数の第1端子をそれぞれ電気的に接続する複数のワイヤと、を有し、
前記複数のワイヤは、線径部、および前記線径部の一方の端部に形成され、前記線径部よりも広い幅で形成された幅広部を有する銅製ワイヤであり、
前記複数のワイヤの前記幅広部は、銅よりも硬度が低い金属材料からなるバンプを介して前記複数の電極パッドに接合し、
前記バンプの幅は、それぞれ、前記複数のワイヤの前記幅広部の幅よりも狭くなっているものである。
本願において、実施の態様の記載は、必要に応じて、便宜上複数のセクション等に分けて記載するが、特にそうでない旨明示した場合を除き、これらは相互に独立別個のものではなく、記載の前後を問わず、単一の例の各部分、一方が他方の一部詳細または一部または全部の変形例等である。また、原則として、同様の部分は繰り返しの説明を省略する。また、実施の態様における各構成要素は、特にそうでない旨明示した場合、理論的にその数に限定される場合および文脈から明らかにそうでない場合を除き、必須のものではない。
<半導体装置の構造>
図1は、本実施の形態1の半導体装置の上面側の内部構造の概要を示す平面図、図2は図1に示す半導体装置の断面図、図3は、図1に示す半導体装置の下面側を示す平面図である。なお、図1では、半導体装置内部の平面的配置を示すため、封止樹脂を透過した状態で示している。
次に、図1〜図3に示すCSP1の製造方法について説明する。
前記実施の形態1では、バンプ31をパッド11の露出面の略中央に配置する実施態様について説明した。本実施の形態2では、前記実施の形態1の変形例として、バンプの配置をパッドの露出面の中央からずらして、千鳥状に接合する実施態様について説明する。図16は、本実施の形態2の半導体装置が有する半導体チップのパッド周辺を示す要部拡大平面図、図17および図18は、図16に示す複数のパッドのうち、隣り合って配置されるパッド周辺をそれぞれ示す要部拡大断面図である。なお、図17は図16に示すC−C線に沿った断面、図18はD−D線に沿った断面をそれぞれ示している。
前記実施の形態2では、バンプ31をワイヤ30の配置に倣って、パッド配列ラインLaに対して交互にずらして配置する実施態様について説明した。本実施の形態3では、前記実施の形態2の変形例として、ワイヤの配置をバンプが形成された位置からずらして接合する実施態様について説明する。図19は、本実施の形態3の半導体装置が有する半導体チップのパッド周辺を示す要部拡大平面図、図20および図21は、図19に示す複数のパッドのうち、隣り合って配置されるパッド周辺をそれぞれ示す要部拡大断面図である。なお、図20は図19に示すC−C線に沿った断面、図21はD−D線に沿った断面をそれぞれ示している。
前記実施の形態1〜前記実施の形態3では、プローブ検査工程で形成されるプローブ痕である窪み部11aが開口部12aの略中央に形成されている例について説明した。本実施の形態4では、窪み部11aの位置を開口部12aの中心からずらして、千鳥状に形成する実施態様について説明する。
2 封止樹脂(封止体)
10、50、51、52、100 半導体チップ
10a 主面
10b 裏面
11 パッド(電極パッド)
11a 窪み部(第1の窪み部、第2の窪み部)
12 絶縁膜
12a 開口部
12b SiO2膜
12c SiN膜
13 半導体基板
13a 半導体素子層
14 配線
15 表面配線
16 絶縁層
18 導電膜
20 配線基板
20a 上面
20b 下面
21 端子
22 ランド
23 半田ボール
30 ワイヤ(第1のワイヤ、第2のワイヤ)
30a 線径部
30b 幅広部
31 バンプ(第1のバンプ、第2のバンプ)
35 配線基板
35a 製品形成領域
36 成型金型
36a 上型
36b 下型
36c キャビティ
40 ウエハ
40a デバイス領域
40b スクライブ領域
41 プローブ
55 半導体装置
57 ワイヤ
101 金属薄膜
101a 銅膜
101b チタン膜
102 めっきバンプ
Ha 高さ
La パッド配列ライン
Wa、Wb、Wc、Wd 幅
We 配置ピッチ
Wf 長さ
Claims (19)
- 第1主面、前記第1主面の反対側に位置する第1裏面、前記第1主面上に形成される複数の電極パッド、および前記第1主面上を覆うように形成され、前記複数の電極パッドがそれぞれ露出する複数の開口部が形成された第1絶縁膜、を有する半導体チップと、
前記半導体チップの周囲に配置される複数の第1端子と、
前記複数の電極パッドと前記複数の第1端子をそれぞれ電気的に接続する複数のワイヤと、を有し、
前記複数のワイヤは、それぞれ線径部、および前記線径部の一方の端部に形成され、前記線径部よりも広い幅で形成された幅広部を有する銅製ワイヤであり、
前記複数のワイヤの前記幅広部は、銅よりも硬度が低い金属材料からなるバンプを介して前記複数の電極パッドに接合し、
前記バンプの幅は、それぞれ、前記複数のワイヤの前記幅広部の幅よりも狭いことを特徴とする半導体装置。 - 請求項1において、
前記バンプは、前記開口部において、前記電極パッドの一部が前記バンプから露出していることを特徴とする半導体装置。 - 請求項2において、
前記複数の電極パッドの表面は、それぞれ前記開口部内に窪み部を有していることを特徴とする半導体装置。 - 請求項3において、
前記複数の電極パッドは、前記複数の電極パッドの中心を結ぶパッド配列ラインに沿って中心を揃えて配置され、
前記複数のワイヤは、
前記パッド配列ラインよりも内側に前記幅広部の中心が配置されるように接合される第1のワイヤと、
前記第1のワイヤの隣に配置され、前記パッド配列ラインよりも外側に前記幅広部の中心が配置されるように接合される第2のワイヤと、からなることを特徴とする半導体装置。 - 請求項4において、
前記バンプは、
前記パッド配列ラインよりも内側に中心を有し、前記第1のワイヤと接合する第1のバンプと、
前記第1のバンプが接合された第1の電極パッドの隣に配置される第2の電極パッドに接合され、前記パッド配列ラインよりも外側に中心を有し、前記第2のワイヤと接合する第2のバンプと、からなることを特徴とする半導体装置。 - 請求項5において、
前記第1のワイヤの前記幅広部と前記第1のバンプ、および前記第2のワイヤの前記幅広部と前記第2のバンプは、それぞれ中心を揃えて接合されていることを特徴とする半導体装置。 - 請求項5において、
前記バンプは、前記窪み部を避けて形成されていることを特徴とする半導体装置。 - 請求項7において、
前記窪み部は、
前記パッド配列ラインよりも外側に中心を有し、前記第1のバンプが接合される前記第1の電極パッドに形成される第1の窪み部と、
前記パッド配列ラインよりも内側に中心を有し、前記第2のバンプが接合される前記第2の電極パッドに形成される第2の窪み部と、からなることを特徴とする半導体装置。 - 請求項5において、
前記開口部の前記パッド配列ラインと交差する方向の長さは、前記開口部の前記パッド配列ラインに沿った方向の幅よりも長いことを特徴とする半導体装置。 - 請求項1において、
前記半導体装置は、前記半導体チップの前記第1裏面側に配置され、第2主面、前記第2主面の反対側に位置する第2裏面、前記第2主面上に形成される前記複数の第1端子、および前記第2主面上を覆うように形成され、前記複数の電極パッドがそれぞれ露出する複数の開口部が形成された第2絶縁膜、を有する第2の半導体チップを有し、
前記複数のワイヤは、前記幅広部と反対側に位置する接合部が、銅よりも硬度が低い金属材料からなる第2バンプを介して前記複数の第1端子に接合していることを特徴とする半導体装置。 - 第1主面、前記第1主面の反対側に位置する第1裏面、前記第1主面上に形成される複数の電極パッド、および前記第1主面上を覆うように形成され、前記複数の電極パッドがそれぞれ露出する複数の開口部が形成された第1絶縁膜、を有する半導体チップと、
前記半導体チップの周囲に配置される複数の第1端子と、
前記複数の電極パッドと前記複数の第1端子をそれぞれ電気的に接続する複数のワイヤと、を有し、
前記複数のワイヤは、それぞれ線径部、および前記線径部の一方の端部に形成され、前記線径部よりも広い幅で形成された幅広部を有する銅製ワイヤであり、
前記複数のワイヤの前記幅広部は、銅よりも硬度が低い金属材料からなるバンプを介して前記複数の電極パッドに接合し、
前記バンプは、前記開口部において、前記電極パッドの一部が前記バンプから露出していることを特徴とする半導体装置。 - 請求項11において、
前記複数の電極パッドの表面は、それぞれ前記開口部内に窪み部を有していることを特徴とする半導体装置。 - 請求項12において、
前記複数の電極パッドは、前記複数の電極パッドの中心を結ぶパッド配列ラインに沿って中心を揃えて配置され、
前記複数のワイヤは、
前記パッド配列ラインよりも内側に前記幅広部の中心が配置されるように接合される第1のワイヤと、
前記第1のワイヤの隣に配置され、前記パッド配列ラインよりも外側に前記幅広部の中心が配置されるように接合される第2のワイヤと、からなることを特徴とする半導体装置。 - 請求項13において、
前記バンプは、
前記パッド配列ラインよりも内側に中心を有し、前記第1のワイヤと接合する第1のバンプと、
前記第1のバンプが接合された第1の電極パッドの隣に配置される第2の電極パッドに接合され、前記パッド配列ラインよりも外側に中心を有し、前記第2のワイヤと接合する第2のバンプと、からなることを特徴とする半導体装置。 - 請求項14において、
前記第1のワイヤの前記幅広部と前記第1のバンプ、および前記第2のワイヤの前記幅広部と前記第2のバンプは、それぞれ中心を揃えて接合されていることを特徴とする半導体装置。 - 請求項14において、
前記バンプは、前記窪み部を避けて形成されていることを特徴とする半導体装置。 - 請求項16において、
前記窪み部は、
前記パッド配列ラインよりも外側に中心を有し、前記第1のバンプが接合される前記第1の電極パッドに形成される第1の窪み部と、
前記パッド配列ラインよりも内側に中心を有し、前記第2のバンプが接合される前記第2の電極パッドに形成される第2の窪み部と、からなることを特徴とする半導体装置。 - 請求項10において、
前記半導体装置は、前記半導体チップの前記第1裏面側に配置され、第2主面、前記第2主面の反対側に位置する第2裏面、前記第2主面上に形成される前記複数の第1端子、および前記第2主面上を覆うように形成され、前記複数の電極パッドがそれぞれ露出する複数の開口部が形成された第2絶縁膜、を有する第2の半導体チップを有し、
前記複数のワイヤは、前記幅広部と反対側に位置する接合部が、銅よりも硬度が低い金属材料からなる第2バンプを介して前記複数の第1端子に接合していることを特徴とする半導体装置。 - 請求項14において、
前記開口部の前記パッド配列ラインと交差する方向の長さは、前記開口部の前記パッド配列ラインに沿った方向の幅よりも長いことを特徴とする半導体装置。
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US9024454B2 (en) | 2015-05-05 |
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US20140273353A1 (en) | 2014-09-18 |
US8772952B2 (en) | 2014-07-08 |
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