JP4809632B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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Description
特許文献等
本実施の形態1の半導体装置の製造方法を図1および図2のフロー図に沿って図3〜図15により説明する。
本実施の形態2では、主として上記基板1Sの分割起点となる改質領域と、主として上記低誘電率膜Lk1の分割起点となる改質領域とをそれぞれ別々に設けた場合を図17〜図20により説明する。
本実施の形態3では、上記レーザ照射工程時における冷却方法の変形例について説明する。
本実施の形態4では、チップ1Cの裏面にダイアタッチフィルム17を設ける場合を図25および図26により説明する。それ以外は、前記実施の形態1〜3と同じである。
本実施の形態5では、切断領域CRに配置されている導体パターン(テスト用のパッド1LBt等)に溝を形成する場合の例を図27〜図29により説明する。それ以外は、前記実施の形態1〜4と同じである。
本実施の形態6の半導体装置の製造方法を図30のフロー図に沿って図31〜図35により説明する。
本実施の形態7では、前工程の段階でウエハ1Wの主面の切断領域CRの保護膜1Lpを切断線CLに沿って除去し溝を形成しておく場合について説明する。
明は上記実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可
能であることは言うまでもない。
1C 半導体チップ
1S 半導体基板
1L 配線層
1Li,1Li1,1Li2,1Li3 層間絶縁膜
1LB ボンディングパッド
1LBt テスト用のボンディングパッド
1Lp 表面保護膜
2 開口部
3a テープ
5 吸着ステージ
8 治具
8a テープ
8a1 テープベース
8a2 接着層
8b リング
8b1,8b2 切り欠き部
10 載置台
14 半導体装置
15 プリント配線基板
16 バンプ電極
17 ダイアタッチフィルム
18 ボンディングワイヤ
19 スペーサ
20 封止体
25 ノズル
26 冷却槽
27 レーザ光放射部
28 冷凍庫
28a シャッタ
30 溝
31 溝
CR 切断領域
Am アライメントターゲット
LB レーザ光
PL 改質領域
PL1 改質領域(第1改質領域)
PL2 改質領域(第2改質領域)
PL3 改質領域
Lk1 低誘電率膜
CW 冷却水
Claims (12)
- 以下の工程を含むことを特徴とする半導体装置の製造方法:
(a)主面と、前記主面に形成された層間絶縁膜と、前記層間絶縁膜上に形成された低誘電率膜と、前記主面とは反対側の裏面とを備えた半導体基板を有する半導体ウエハを用意する工程;
(b)前記半導体ウエハの切断領域にレーザを照射し、前記半導体ウエハの内部を加熱および溶融することで、改質領域を形成する工程;
(c)前記(b)工程の後、前記改質領域を起点として前記半導体ウエハを複数の半導体チップに分割する工程;
ここで、
前記(b)工程では、前記半導体ウエハの前記切断領域に前記レーザを照射することで形成される前記改質領域が前記低誘電率膜の一部、前記層間絶縁膜の一部、および前記半導体基板の一部と接し、かつ前記切断領域における前記主面に形成されたアライメントターゲットまたはパッドとは接しないように、前記レーザを照射する。 - 請求項1記載の半導体装置の製造方法において、前記改質領域を、前記半導体ウエハの主面に沿って直線状または破線状に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1記載の半導体装置の製造方法において、前記低誘電率膜を分割することが難しい箇所に集中して前記改質領域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1記載の半導体装置の製造方法において、前記半導体ウエハの前記配線層の最上層に形成されている表面保護膜から前記低誘電率膜までの積層膜のうち、前記分離領域の表面保護膜から前記低誘電率膜の一部を前記分離領域に沿って除去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。
- 請求項1記載の半導体装置の製造方法において、前記半導体ウエハをペルチェ素子により冷却することを特徴とする半導体装置の製造方法。
- 以下の工程を含むことを特徴とする半導体装置の製造方法:
(a)主面と、前記主面に形成された層間絶縁膜と、前記層間絶縁膜上に形成された低誘電率膜と、前記主面とは反対側の裏面とを備えた半導体基板を有する半導体ウエハを用意する工程;
(b)前記半導体ウエハの切断領域にレーザを照射し、前記半導体ウエハの内部を加熱および溶融することで、第1改質領域と、前記第1改質領域から離れた位置に第2改質領域を形成する工程;
(c)前記(b)工程の後、前記第1および第2改質領域を起点として前記半導体ウエハを複数の半導体チップに分割する工程;
ここで、
前記(b)工程では、前記半導体ウエハの前記切断領域に前記レーザを照射することで形成される前記第2改質領域が前記低誘電率膜の一部、前記層間絶縁膜の一部、および前記半導体基板の一部と接し、かつ前記切断領域における前記主面に形成されたアライメントターゲットまたはパッドと接しないように、前記レーザを照射する。 - 請求項6記載の半導体装置の製造方法において、前記第1改質領域の形状と、前記第2改質領域の形状とを変えることを特徴とする半導体装置の製造方法。
- 請求項7記載の半導体装置の製造方法において、前記第2改質領域の方が、前記第1改質領域よりも小さいことを特徴とする半導体装置の製造方法。
- 請求項7記載の半導体装置の製造方法において、前記第1改質領域を前記半導体ウエハの主面に沿って直線状に形成し、前記第2改質領域を前記半導体ウエハの主面に沿って破線状に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6記載の半導体装置の製造方法において、前記低誘電率膜を分割することが難しい箇所に前記第2改質領域を集中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6記載の半導体装置の製造方法において、前記半導体ウエハの前記配線層の最上層の表面保護膜から前記低誘電率膜までの積層膜のうち、前記分離領域の表面保護膜から前記低誘電率膜の一部を前記分離領域に沿って除去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。
- 請求項6記載の半導体装置の製造方法において、前記半導体ウエハをペルチェ素子により冷却することを特徴とする半導体装置の製造方法。
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| JP2005161803A JP4809632B2 (ja) | 2005-06-01 | 2005-06-01 | 半導体装置の製造方法 |
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| KR1020060048683A KR101182083B1 (ko) | 2005-06-01 | 2006-05-30 | 반도체 장치의 제조 방법 |
| CN2006100850891A CN1873924B (zh) | 2005-06-01 | 2006-05-31 | 半导体制造方法 |
| US11/444,507 US7737001B2 (en) | 2005-06-01 | 2006-06-01 | Semiconductor manufacturing method |
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| US7737001B2 (en) | 2010-06-15 |
| KR20060125541A (ko) | 2006-12-06 |
| KR101182083B1 (ko) | 2012-09-11 |
| US20070066044A1 (en) | 2007-03-22 |
| CN1873924A (zh) | 2006-12-06 |
| TW200703496A (en) | 2007-01-16 |
| CN1873924B (zh) | 2010-05-12 |
| JP2006339382A (ja) | 2006-12-14 |
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