JP2010278040A - 半導体装置の製造方法および半導体装置 - Google Patents
半導体装置の製造方法および半導体装置 Download PDFInfo
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- JP2010278040A JP2010278040A JP2009125996A JP2009125996A JP2010278040A JP 2010278040 A JP2010278040 A JP 2010278040A JP 2009125996 A JP2009125996 A JP 2009125996A JP 2009125996 A JP2009125996 A JP 2009125996A JP 2010278040 A JP2010278040 A JP 2010278040A
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- insulating film
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Abstract
【解決手段】半導体チップ10の主面10a上にパッド11、パッド11を露出するように主面10a上を覆って形成される絶縁層16、パッド11を露出するように、絶縁層16上に形成される絶縁膜2、絶縁膜2上に複数のパッド11とそれぞれ電気的に接続される複数の再配線17、再配線17の一部を露出するように再配線17上に形成される絶縁膜3、および複数の再配線17の絶縁膜3から露出した領域にそれぞれ接合される複数のバンプ18を順次形成する工程を有し、絶縁膜2および絶縁膜3のうちの何れか一方は、絶縁膜2または絶縁膜3よりも裏面10b側に形成された絶縁膜あるいは絶縁層の一部を露出するように、形成する。
【選択図】図2
Description
(a)主面、前記主面に形成された複数のデバイス領域、前記複数のデバイス領域のそれぞれに形成された複数の第1電極、前記複数のデバイス領域のうちの隣り合うデバイス領域の間に形成されたスクライブ領域、および前記主面とは反対側に位置する裏面を有する半導体ウエハを準備する工程、
(b)前記半導体ウエハの前記裏面を研削する工程、
(c)前記複数の第1電極と電気的に接続される複数の導電性部材を前記主面側にそれぞれ配置する工程、
(d)前記スクライブ領域に沿って前記半導体ウエハを分割し、複数の半導体チップを取得する工程、を含み、
前記主面は、複数の半導体素子が形成される半導体素子層、および前記半導体素子層上に複数の第1絶縁層を介して積層され、前記複数の半導体素子と電気的に接続される複数の第1配線を含み、
前記主面上には、前記複数の第1電極、前記第1電極と前記複数の半導体素子を電気的に接続する第2配線、および前記第1電極を露出するように前記第1、第2配線、および前記第1絶縁層を覆って形成される第2絶縁層が形成され、
前記(a)工程は、
(a1)前記第1電極を露出するように、前記第2絶縁層上に第1絶縁膜を形成する工程、
(a2)前記第1絶縁膜上に前記複数の第1電極とそれぞれ電気的に接続される複数の第3配線を形成する工程、
(a3)前記第3配線の一部を露出するように前記第3配線上に第2絶縁膜を形成する工程、を含み、
前記複数の導電性部材は、前記複数の第3配線の前記第2絶縁膜から露出した領域にそれぞれ接合され、
前記第1絶縁膜および前記第2絶縁膜のうちの何れか一方は、前記第1絶縁膜または前記第2絶縁膜よりも前記裏面側に形成された絶縁膜あるいは絶縁層の一部を露出するように、形成されるものである。
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>
本実施の形態では半導体チップに形成された電極パッドの位置を、配線(再配線)を用いて別の位置に配置する再配線技術を適用したWPP型半導体装置(以下、単にWPPと記載する)を取り上げて説明する。
次に、WPP1の製造方法について説明する。
前記実施の形態1では、半導体チップ10の主面側に形成する絶縁膜2および絶縁膜3のそれぞれにパターニングを施し、絶縁層16を絶縁膜2および絶縁膜3の両方から露出させる構造について説明した。本実施の形態では、絶縁膜2あるいは絶縁膜3のうち、いずれか一方のみにパターニングを施す構造について説明する。
図19〜図24では、絶縁膜2にパターニングを施す場合について説明したが、変形例として絶縁膜3にパターニングを施すこともできる。図25は図19に示す半導体装置に対する変形例である半導体装置の全体構造を示す平面図、図26は図25に示すA−A線に沿った断面図である。
本実施の形態では、前記実施の形態1で説明したWPP1よりも、さらに絶縁膜の配置量を低減することにより、半導体チップ10に生じる反りをさらに低減する構成にていて説明する。図27は図1に示す半導体装置に対する変形例である半導体装置の全体構造を示す平面図、図28は図27に示すA−A線に沿った断面図である。
前記実施の形態1〜3では、半導体チップ10の主面10a側に2層の有機絶縁膜(絶縁膜2、3)を形成する例について説明したが、有機絶縁膜の層数は2層以上とすることができる。図29は図19に示す半導体装置に対する第2の変形例である半導体装置の全体構造を示す平面図、図30は図29に示すA−A線に沿った断面図である。
本実施の形態では、前記実施の形態1〜4で説明したWPPの変形例として、半導体ウエハの主面側の表面を封止体で封止する態様について説明する。図31は、本実施の形態の半導体装置の全体構造を示す平面図、図32は図31に示すA−A線に沿った断面図である。
前記実施の形態1〜5では、パッド11を半導体チップ10の外周に沿って配置し、再配線17により、複数の外部端子をパッド11と平面的に異なる位置にマトリクス状に形成する構成について説明した。本実施の形態では、半導体チップ10の主面10aにおいて、複数のパッド11をマトリクス状に配置して、複数のパッド11上に、それぞれ外部端子を形成する態様について説明する。図33は、本実施の形態の半導体装置の全体構造を示す平面図、図34は図33に示すA−A線に沿った断面図である。
本実施の形態では、前記実施の形態1〜6で説明したWPPの実装形態の一つの実施態様について説明する。図35は、本実施の形態の半導体装置の全体構造を示す断面図である。
本実施の形態では、複数の半導体装置を積層する実装態様について説明する。図36は、本実施の形態の半導体装置の全体構造を示す断面図である。図36に示す半導体装置50は、複数のWPP51が積層された積層型半導体装置である。各WPP51は、それぞれが有する半導体チップの、主面側に形成された再配線17およびバンプ18を介して電気的に接続されている。本実施の形態では、例えば、最下段に配置されるWPP51aは、演算回路が形成されたマイコンチップを有するWPP、WPP51aよりも、上段側に搭載される複数のWPP51bは、それぞれメモリ回路が形成されたメモリチップを有するWPPである。これらのWPP51a,51bを、中段(第2段目)のWPP51bにスルー・シリコン・ビア(TSV)技術を用いて形成した貫通電極を介して電気的に接続することによりシステムを構成するマルチチップモジュールである。つまり、中段のWPP51bはメモリチップであるとともに、インタポーザチップとしての機能も有している。
2、3、4 絶縁膜(有機絶縁膜)
5 封止樹脂
10 半導体チップ
10a 主面
10b 裏面
10c 主回路形成領域
11 パッド
12 半導体基板
12a 半導体素子層
13 配線
14 表面配線
15、16 絶縁層
17 再配線
17a ボンディング部
17b ランド部
17c 引き出し配線
18 バンプ
18a 銅ポスト
19 ガードリング
20 半導体ウエハ
20a デバイス領域
20b スクライブ領域
21 TEG
22 保護テープ
40 半導体装置
41 電子部品
41a 表面
41b 裏面
42 配線基板
42a 表面
42b 裏面
42c 配線基板
42d 配線
42e 基板
42f 絶縁材
42g 配線
42h ランド
43 バンプ
44 ワイヤ
50 半導体装置
62 ワイヤ
D1、D2、D3 間隔
Claims (19)
- (a)主面、前記主面に形成された複数のデバイス領域、前記複数のデバイス領域のそれぞれに形成された複数の第1電極、前記複数のデバイス領域のうちの隣り合うデバイス領域の間に形成されたスクライブ領域、および前記主面とは反対側に位置する裏面を有する半導体ウエハを準備する工程、
(b)前記半導体ウエハの前記裏面を研削する工程、
(c)前記複数の第1電極と電気的に接続される複数の導電性部材を前記主面側にそれぞれ配置する工程、
(d)前記スクライブ領域に沿って前記半導体ウエハを分割し、複数の半導体チップを取得する工程、を含み、
前記主面は、複数の半導体素子が形成される半導体素子層、および前記半導体素子層上に複数の第1絶縁層を介して積層され、前記複数の半導体素子と電気的に接続される複数の第1配線を含み、
前記主面上には、前記複数の第1電極、前記第1電極と前記複数の半導体素子を電気的に接続する第2配線、および前記第1電極を露出するように前記第1、第2配線、および前記第1絶縁層を覆って形成される第2絶縁層が形成され、
前記(a)工程は、
(a1)前記第1電極を露出するように、前記第2絶縁層上に第1絶縁膜を形成する工程、
(a2)前記第1絶縁膜上に前記複数の第1電極とそれぞれ電気的に接続される複数の第3配線を形成する工程、
(a3)前記第3配線の一部を露出するように前記第3配線上に第2絶縁膜を形成する工程、を含み、
前記複数の導電性部材は、前記複数の第3配線の前記第2絶縁膜から露出した領域にそれぞれ接合され、
前記第1絶縁膜および前記第2絶縁膜のうちの何れか一方は、前記第1絶縁膜または前記第2絶縁膜よりも前記裏面側に形成された絶縁膜あるいは絶縁層の一部を露出するように、形成されることを特徴とする半導体装置の製造方法。 - 請求項1において、
前記第1絶縁膜および前記第2絶縁膜のうちの何れか一方は、前記第3配線の平面形状に倣って形成されることを特徴とする半導体装置の製造方法。 - 請求項2において、
前記第1絶縁層は、無機絶縁材料からなり、
前記第1絶縁膜は、前記無機絶縁材料よりも誘電率が低い有機絶縁材料からなることを特徴とする半導体装置の製造方法。 - 請求項3において、
前記第1および第2絶縁膜は、前記第1絶縁層よりも弾性が低い有機絶縁材料からなることを特徴とする半導体装置の製造方法。 - 請求項4において、
前記第1絶縁膜は、前記第1配線の平面形状に倣って形成されることを特徴とする半導体装置の製造方法。 - 請求項5において、
前記第2絶縁膜は、前記第1配線の平面形状に倣って形成され、前記第1絶縁膜の側面は、前記第2絶縁膜により覆われていること特徴とする半導体装置の製造方法。 - 請求項2において、
前記第3配線を配置する領域には、隣り合う前記第3配線が第1の間隔で配置される第1領域と、前記第3配線が前記第1の間隔よりも広い第2の間隔で配置される第2領域が含まれ、
前記第1領域では、前記第3配線毎に前記第1絶縁膜または/および前記第2絶縁膜を独立して形成し、
前記第2領域では、隣り合う複数の再配線に対して一体化した1つの絶縁膜を形成することを特徴とする半導体装置の製造方法。 - 請求項2において、
隣り合って配置される前記第3配線は、それぞれ第1の間隔で配置される第1領域と、前記第1の間隔よりも広い第2の間隔で配置される第2領域とを有し、
前記第1領域では、前記第1絶縁膜または/および前記第2絶縁膜が一体に形成し、
前記第2領域では、前記第1絶縁膜または/および前記第2絶縁膜が離間して形成することを特徴とする半導体装置の製造方法。 - 請求項2において、
前記第1絶縁膜および前記第2絶縁膜のうちの何れか一方は、前記第3配線の輪郭に沿って形成することを特徴とする半導体装置の製造方法。 - 請求項2において、
前記第3配線は、銅からなる銅膜と、銅よりも線膨張係数が小さい金属材料からなる金属膜の積層構造とすることを特徴とする半導体装置の製造方法。 - 請求項2において、
前記(d)工程で取得した前記半導体チップを配線基板に埋め込み実装する工程、をさらに含んでいることを特徴とする半導体装置の製造方法。 - 請求項2において、
前記(c)工程で配置する前記複数の導電性部材は、前記第3配線の一部に電気的に接続されるバンプ電極であって、
チップ搭載面に複数のボンディングリードが形成された配線基板を準備して、前記ボンディングリードと前記バンプ電極を接合した後、前記チップ搭載面と前記半導体チップの主面の間の隙間にアンダフィル樹脂を埋め込む工程、をさらに含んでいることを特徴とする半導体装置の製造方法。 - 請求項2において、
前記(c)工程で配置する前記複数の導電性部材は、前記第3配線の一部に電気的に接続されるワイヤであって、
前記ワイヤを封止樹脂で封止する工程、をさらに含んでいることを特徴とする半導体装置の製造方法。 - (a)主面、前記主面に形成された複数のデバイス領域、前記複数のデバイス領域のそれぞれに形成された複数の第1電極、前記複数のデバイス領域のうちの隣り合うデバイス領域の間に形成されたスクライブ領域、および前記主面とは反対側に位置する裏面を有する半導体ウエハを準備する工程、
(b)前記半導体ウエハの前記裏面を研削する工程、
(c)前記複数の第1電極と電気的に接続される複数の導電性部材を前記主面側にそれぞれ配置する工程、
(d)前記スクライブ領域に沿って前記半導体ウエハを分割し、複数の半導体チップを取得する工程、を含み、
前記主面は、複数の半導体素子が形成される半導体素子層、および前記半導体素子層上に複数の第1絶縁層を介して積層され、前記複数の半導体素子と電気的に接続される複数の第1配線を含み、
前記主面上には、前記複数の第1電極、前記第1電極と前記複数の半導体素子を電気的に接続する第2配線、および前記第1電極を露出するように前記第1、第2配線、および前記第1絶縁層を覆って形成される第2絶縁層が形成され、
前記(a)工程は、
(a1)前記第1電極を露出するように、前記第2絶縁層上に第1絶縁膜を形成する工程、
(a2)前記第1絶縁膜上に前記複数の第1電極とそれぞれ電気的に接続される複数の第3配線を形成する工程、を含み、
前記複数の導電性部材は、前記複数の第3配線の一部にそれぞれ接合され、
前記第1絶縁膜は、前記第1絶縁膜よりも前記裏面側に形成された絶縁膜あるいは絶縁層の一部を露出するように、形成されることを特徴とする半導体装置の製造方法。 - 主面、前記主面上に形成される複数の第1電極、および前記主面とは反対側に位置する裏面を有する半導体チップを有し、
前記主面は、複数の半導体素子が形成される半導体素子層、および前記半導体素子層上に複数の第1絶縁層を介して積層され、前記複数の半導体素子と電気的に接続される複数の第1配線を含み、
前記主面上には、前記複数の第1電極、前記第1電極と前記複数の半導体素子を電気的に接続する第2配線、前記第1電極を露出するように前記第1、第2配線、および前記第1絶縁層を覆って形成される第2絶縁層、前記第1電極を露出するように、前記第2絶縁層上に形成される第1絶縁膜、前記第1絶縁膜上に前記複数の第1電極とそれぞれ電気的に接続される複数の第3配線、前記第3配線の一部を露出するように前記第3配線上に形成される第2絶縁膜、および前記複数の第3配線の前記第2絶縁膜から露出した領域にそれぞれ接合される複数の導電性部材が形成され、
前記第1絶縁膜および前記第2絶縁膜のうちの何れか一方は、前記第1絶縁膜または前記第2絶縁膜よりも前記裏面側に形成された絶縁膜あるいは絶縁層の一部を露出するように、形成されていることを特徴とする半導体装置。 - 請求項15において、
前記第3配線を配置する領域には、隣り合う前記第3配線が第1の間隔で配置される第1領域と、前記第3配線が前記第1の間隔よりも広い第2の間隔で配置される第2領域が含まれ、
前記第1領域では、前記第3配線毎に前記第1絶縁膜または/および前記第2絶縁膜を独立して形成され、
前記第2領域では、隣り合う複数の再配線に対して一体化した1つの絶縁膜を形成されていることを特徴とする半導体装置。 - 請求項15において、
隣り合って配置される前記第3配線は、それぞれ第1の間隔で配置される第1領域と、前記第1の間隔よりも広い第2の間隔で配置される第2領域とを有し、
前記第1領域では、前記第1絶縁膜または/および前記第2絶縁膜が一体に形成され、
前記第2領域では、前記第1絶縁膜または/および前記第2絶縁膜が離間して形成されていることを特徴とする半導体装置。 - 請求項15において、
前記第1絶縁膜および前記第2絶縁膜のうちの何れか一方は、前記第3配線の輪郭に沿って形成されていることを特徴とする半導体装置。 - 主面、前記主面上に形成される複数の第1電極、および前記主面とは反対側に位置する裏面を有する半導体チップを有し、
前記主面は、複数の半導体素子が形成される半導体素子層、および前記半導体素子層上に複数の第1絶縁層を介して積層され、前記複数の半導体素子と電気的に接続される複数の第1配線を含み、
前記主面上には、前記複数の第1電極、前記第1電極と前記複数の半導体素子を電気的に接続する第2配線、前記第1電極を露出するように前記第1、第2配線、および前記第1絶縁層を覆って形成される第2絶縁層、前記第1電極を露出するように、前記第2絶縁層上に形成される第1絶縁膜、前記第1絶縁膜上に前記複数の第1電極とそれぞれ電気的に接続される複数の第3配線、および前記複数の第3配線にそれぞれ接合される複数の導電性部材が形成され、
前記第1絶縁膜は、前記第1絶縁膜よりも前記裏面側に形成された絶縁膜あるいは絶縁層の一部を露出するように、形成されていることを特徴とする半導体装置。
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JP (1) | JP2010278040A (ja) |
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KR20180059747A (ko) | 2015-10-01 | 2018-06-05 | 르네사스 일렉트로닉스 가부시키가이샤 | 반도체 장치 및 그 제조 방법 |
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WO2024029279A1 (ja) * | 2022-08-03 | 2024-02-08 | 株式会社村田製作所 | 樹脂モールド部品及び高周波モジュール |
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