JP4003780B2 - 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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- JP4003780B2 JP4003780B2 JP2005100737A JP2005100737A JP4003780B2 JP 4003780 B2 JP4003780 B2 JP 4003780B2 JP 2005100737 A JP2005100737 A JP 2005100737A JP 2005100737 A JP2005100737 A JP 2005100737A JP 4003780 B2 JP4003780 B2 JP 4003780B2
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- film
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- semiconductor substrate
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Description
次に、図1に示す半導体装置の製造方法の第1の例について説明する。まず、図2に示すように、ウエハ状態のシリコン基板1上にアルミニウム系金属等からなる接続パッド2、酸化シリコンや窒化シリコン等からなる絶縁膜3及びエポキシ系樹脂やポリイミド系樹脂等からなる保護膜5が設けられ、接続パッド2の中央部が絶縁膜3及び保護膜5に形成された開口部4、6を介して露出されたものを用意する。
次に、図1に示す半導体装置の製造方法の第2の例について説明する。この場合、図10に示す工程後に、図15に示すように、第2のダイシングストリート22に沿って、ダイシング法やレーザーカット法等により、溝28内に形成された第2の封止膜12の幅方向中央部をフルカットし、溝31を形成する。この状態では、第2の封止膜12等を含むシリコン基板1は溝31により個々のチップに分離されるが、第1のダイシングフィルム27に貼り付けられているので、ばらばらとなることはない。
次に、図1に示す半導体装置の製造方法の第3の例について説明する。この場合、図7に示す工程後に、図20に示すように、シリコン基板1の下面を第1のダイシングフィルム41の上面に貼り付ける。次に、図21に示すように、第1のダイシングストリート21に沿って、ダイシング法やレーザーカット法等により、第1の封止膜10、保護膜5、絶縁膜3及びシリコン基板1をフルカットする。この場合も、ダイシングフィルム41の厚さ方向中間までカットする。すると、ウエハ状態のシリコン基板1は個々のチップに分離されるが、各チップが第1のダイシングフィルム41に貼り付けられているので、第1のダイシングフィルム41の上面を含む各チップ間つまり第1のダイシングストリート21に対応する領域には溝42が形成されている。
2 接続パッド
3 絶縁膜
5 保護膜
7 下地金属層
8 配線
9 柱状電極
10 第1の封止膜
11 半田ボール
12 第2の封止膜
21、22 ダイシングストリート
27、29 ダイシングフィルム
Claims (8)
- 上面に柱状電極が設けられた半導体基板と、前記柱状電極の周囲における前記半導体基板上に設けられ、Naイオン、Kイオン、CaイオンおよびClイオンの各不純物濃度が10ppm以下の第1の封止材料からなる第1の封止膜と、前記半導体基板及び前記第1の封止膜の周側面に設けられ、Naイオン、Kイオン、CaイオンおよびClイオンの合計不純物濃度が100ppm以上の第2の封止材料からなる第2の封止膜とを備えていることを特徴とする半導体装置。
- 請求項1に記載の発明において、前記第1の封止膜の熱膨張係数は20ppm/℃未満であり、前記第2の封止膜の熱膨張係数は20ppm/℃以上であることを特徴とする半導体装置。
- 請求項1に記載の発明において、前記第2の封止膜は前記半導体基板の下面をも覆うように設けられていることを特徴とする半導体装置。
- 請求項1に記載の発明において、前記柱状電極上に半田ボールが設けられていることを特徴とする半導体装置。
- ウエハ状態の半導体基板上に柱状電極を形成する工程と、前記柱状電極の周囲における前記ウエハ状態の半導体基板上に、Naイオン、Kイオン、CaイオンおよびClイオンの各不純物濃度が10ppm以下の第1の封止材料からなる第1の封止膜を形成する工程と、前記第1の封止膜を含む前記ウエハ状態の半導体基板を切断して各半導体基板に分離するための溝を形成する工程と、前記溝内を含む前記各半導体基板の下面に、Naイオン、Kイオン、CaイオンおよびClイオンの合計不純物濃度が100ppm以上の第2の封止材料からなる第2の封止膜を形成する工程と、前記溝内に形成された前記第2の封止膜をその幅方向中央部において切断する工程とを有することを特徴とする半導体装置の製造方法。
- 請求項5に記載の発明において、前記第1の封止膜を含む前記ウエハ状態の半導体基板を切断して各半導体基板に分離するための溝を形成する工程は、前記第1の封止膜の表面をフィルムに貼り付けた状態で前記ウエハ状態の半導体基板側から切断して行なうことを特徴とする半導体装置の製造方法。
- 請求項5に記載の発明において、前記第1の封止膜を含む前記ウエハ状態の半導体基板を切断して各半導体基板に分離するための溝を形成する工程は、前記ウエハ状態の半導体基板の下面をフィルムに貼り付けた状態で前記第1の封止膜側から切断して行なうことを特徴とする半導体装置の製造方法。
- 請求項7に記載の発明において、前記溝形成工程後であって前記第2の封止膜形成工程前に、前記第1の封止膜の表面に別のフィルムを貼り付けてから前記フィルムを剥離する工程を有することを特徴とする半導体装置の製造方法。
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JP2005100737A JP4003780B2 (ja) | 2004-09-17 | 2005-03-31 | 半導体装置及びその製造方法 |
US11/226,769 US7417330B2 (en) | 2004-09-17 | 2005-09-14 | Semiconductor device packaged into chip size and manufacturing method thereof |
TW094131762A TW200614404A (en) | 2004-09-17 | 2005-09-15 | Semiconductor device and manufacturing method thereof |
KR1020050086569A KR100727519B1 (ko) | 2004-09-17 | 2005-09-16 | 반도체장치 및 그 제조방법 |
US12/218,685 US7867826B2 (en) | 2004-09-17 | 2008-07-17 | Semiconductor device packaged into chip size and manufacturing method thereof |
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US20080286903A1 (en) | 2008-11-20 |
US7417330B2 (en) | 2008-08-26 |
TWI296139B (ja) | 2008-04-21 |
TW200614404A (en) | 2006-05-01 |
JP2006114867A (ja) | 2006-04-27 |
US7867826B2 (en) | 2011-01-11 |
US20060060984A1 (en) | 2006-03-23 |
KR20060051364A (ko) | 2006-05-19 |
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