JP5212118B2 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP5212118B2 JP5212118B2 JP2009000070A JP2009000070A JP5212118B2 JP 5212118 B2 JP5212118 B2 JP 5212118B2 JP 2009000070 A JP2009000070 A JP 2009000070A JP 2009000070 A JP2009000070 A JP 2009000070A JP 5212118 B2 JP5212118 B2 JP 5212118B2
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- solder
- core
- semiconductor chip
- electrode
- semiconductor device
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Description
半導体チップの上に接着剤塗布用のマスクを配置して前記電極上のはんだボール配置箇所に接着剤を塗布し、
前記大径コアと小径コアを備えた2種類のはんだボールのいずれか一方のはんだボール配置箇所に穴を持ち、他方のはんだボール配置箇所の接着剤に触れず、かつ前記はんだボールの直径以上かつ2倍未満の厚さを持つマスクを配置して一方のはんだボールを前記半導体チップ上に配置し、
全てのはんだボール配置箇所に穴を持ち、かつはんだボールの直径以上で2倍未満の厚さを持つマスクを用いて他方のはんだボールを半導体チップ上に配置して、1枚の半導体チップ上に大径コアと小径コアを有するはんだボールを配置し、はんだを溶融して各半導体チップを接続することを特徴とする。接着剤はフラックスまたははんだペーストから選択される。
接合する2枚の半導体チップの一方の半導体チップの前記電極上のはんだボール配置箇所に大径コアと小径コアの2種類のコアを備えたはんだボールのいずれか一方のはんだボールを配置し、
他方の半導体チップのはんだボール配置箇所に他方のはんだボールを配置し、
それぞれの半導体チップのコア入りはんだボールが配置されている面同士を押圧加熱してはんだ溶融により接合を行うことを特徴とする。前記半導体チップはウェハ状であってもよい。
〔半導体装置の構成〕
本半導体装置は、4枚のシリコン半導体チップ1a〜1dを積層して構成される。各半導体チップ1a〜1dは、シリコン基板1の下側表面にデバイス・配線層2を設け、その表面には外部と導通するAlからなる外部接続電極3が設けられている。また、最上段に配置される半導体チップ1a以外の半導体チップ1b〜1dにはシリコン貫通電極4が設けられている。シリコン貫通電極4は、シリコン基板1を貫通する貫通孔5の表面に絶縁層を介してAuめっきを施して構成されており、外部接続電極3と導通している。上記シリコン基板に替えて、ゲルマニウム、ガリウム砒素、炭化珪素等を基板材料として用いても良い。
〔半導体装置の製造方法〕
次に、図2を用いて実施例1の半導体装置の製造方法を説明する。始めに、図2(a)に示す様にシリコン基板1の下側表面にデバイス・配線層2を持ち、その表面の一部に外部接続電極3を持つ半導体チップ1cを用意する。
図3に本発明の実施例2の半導体装置の模式図を示す。実施例1との相違点は、接続部9a、9bに用いるコア6bと比較して、接続部10a、10b、10cに用いるコア6aの直径が小さい点である。接続部10a、10b、10cに用いるコア6aの直径が小さいと、コア6aと外部接続電極3や、コア6とシリコン貫通電極4の間のはんだ7の厚みが大きくなる。はんだは、コア6の材料であるCuよりも柔らかい上に、接合時には液状となる。そのため、接合時に加えられる押付け荷重は主に大きいコア6bを用いる接続部9a、9bで支えられる。コア径は少なくとも2種類必要であるが、電極形状等によっては3種類以上用いてもよい。
〔第1の半導体装置製造方法〕
図6A、図6Bを用いて、第1の製造方法を説明する。はじめに、図6A(a)に示す様にシリコン貫通電極4を持つ半導体チップ1bを用意する。次に、図6A(b)に示す様に半導体チップ1bの上にはんだボールを配置する箇所に穴を開けたフラックス用マスク61を置き、図6A(c)に示す様にフラックス用マスク61を用いてフラックス21を半導体チップ1b上に塗布し、図6A(d)に示す様にフラックス用マスク61を取り除く。
〔第2の半導体装置製造方法〕
次に、図7〜9を用いて第2の製造方法を説明する。はじめに、図7(a)に示す様に積層時に上段となる半導体チップ1bを用意する。次に、図7(b)に示す様に半導体チップ1b上にはんだボール31を配置する箇所に穴を開けたフラックス用マスク71を置き、図7(c)に示す様にフラックス21を塗布して、図7(d)に示す様にフラックス用マスク71を取り除く。
2…デバイス・配線層
3…外部接続電極
4、102…シリコン貫通電極
5…貫通孔
6、6a、6b、6c、6d…コア
7、7a、7b、7c、7d…はんだ
8、101…テーパ部
21…フラックス
31、32、33、34…はんだボール
61、71、81…フラックス用マスク
62、63、72、82…はんだボール用マスク
Claims (12)
- 基板貫通電極と外部接続電極を有する複数の電極を備えた半導体チップを複数枚積層し、各半導体チップに設けられた前記電極をはんだで接続して接続部を形成し、半導体チップ間を電気的に導通する半導体装置において、
互いに接続される前記半導体チップの前記接続部の少なくとも1方の基板貫通電極の表面に凹部を設け、前記はんだ内部に前記はんだ溶融時に前記凹部と係合し半導体チップ間の位置決めを行うはんだより高融点の材料からなるコアを備えたことを特徴とする半導体装置。 - 請求項1に記載された半導体装置において、前記基板貫通電極が中空部を有する中空貫通電極であることを特徴とする半導体装置。
- 請求項1または2に記載された半導体装置において、前記コアが球形状の導電体からなることを特徴とする半導体装置。
- 請求項1または2に記載された半導体装置において、前記コアが球形状の絶縁体からなることを特徴とする半導体装置。
- 請求項1乃至4のいずれか1項に記載された半導体装置において、前記凹部が前記基板貫通電極と同軸上に形成されたテーパ部からなることを特徴とする半導体装置。
- 請求項1乃至5のいずれか1項に記載された半導体装置において、前記コアは大径コアと小径コアの2種類のコアを有することを特徴とする半導体装置。
- 請求項6に記載された半導体装置において、電源供給に用いられる接続部に大径コアが配置されることを特徴とする半導体装置。
- 請求項6に記載された半導体装置において、信号送受信に用いられる配線部に小径コアが配置されることを特徴とする半導体装置。
- 基板貫通電極と外部接続電極を有する複数の電極を備えた半導体チップを複数枚積層し、各半導体チップに設けられた前記電極をはんだで接続して接続部を形成し半導体チップ間を電気的に導通し、互いに接続される前記半導体チップの接続部の少なくとも1方の基板貫通電極の表面に凹部を設け、前記はんだの内部に前記はんだ溶融時に前記凹部と係合し半導体チップ間の位置決めを行うはんだより高融点の材料からなるコアを備えるとともに、前記コアが球形状で大径コアと小径コアの2種類のコアを有する半導体装置の製造方法において、
半導体チップの上に接着剤塗布用のマスクを配置して前記電極上のはんだボール配置箇所に接着剤を塗布し、
前記大径コアと小径コアを備えた2種類のはんだボールのいずれか一方のはんだボール配置箇所に穴を持ち、他方のはんだボール配置箇所の接着剤に触れず、かつ前記はんだボールの直径以上かつ2倍未満の厚さを持つマスクを配置して一方のはんだボールを前記半導体チップ上に配置し、
全てのはんだボール配置箇所に穴を持ち、かつはんだボールの直径以上で2倍未満の厚さを持つマスクを用いて他方のはんだボールを半導体チップ上に配置して、1枚の半導体チップ上に大径コアと小径コアを有するはんだボールを配置し、はんだを溶融して各半導体チップを接続することを特徴とする半導体装置の製造方法。 - 請求項9に記載された半導体装置の製造方法において、前記接着剤はフラックスまたははんだペーストから選択されることを特徴とする半導体装置の製造方法。
- 基板貫通電極と外部接続電極を有する複数の電極を備えた半導体チップを複数枚積層し、各半導体チップに設けられた前記電極をはんだで接続して接続部を形成し半導体チップ間を電気的に導通し、互いに接続される前記半導体チップの接続部の少なくとも1方の基板貫通電極の表面に凹部を設けると共に、前記はんだ内部にはんだより高融点の材料からなるコアを備えるとともに、前記コアが球形状で大径コアと小径コアの2種類のコアを有する半導体装置の製造方法において、
接合する2枚の半導体チップの一方の半導体チップの前記電極上のはんだボール配置箇所に大径コアと小径コアの2種類のコアを備えたはんだボールのいずれか一方のはんだボールを配置し、
他方の半導体チップのはんだボール配置箇所に他方のはんだボールを配置し、
それぞれの半導体チップのコア入りはんだボールが配置されている面同士を押圧加熱してはんだ溶融により接合を行うことを特徴とする半導体装置の製造方法。 - 請求項9乃至11のいずれか1項に記載された半導体装置の製造方法において、前記半導体チップはウェハ状であることを特徴とする半導体装置の製造方法。
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KR100906065B1 (ko) * | 2007-07-12 | 2009-07-03 | 주식회사 동부하이텍 | 반도체칩, 이의 제조 방법 및 이를 가지는 적층 패키지 |
JP5045688B2 (ja) * | 2009-01-29 | 2012-10-10 | 日立金属株式会社 | 半導体装置 |
US8294240B2 (en) * | 2009-06-08 | 2012-10-23 | Qualcomm Incorporated | Through silicon via with embedded decoupling capacitor |
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KR20120052734A (ko) * | 2010-11-16 | 2012-05-24 | 삼성전자주식회사 | 반도체 칩 및 반도체 칩의 형성 방법 |
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EP2908337A1 (en) | 2014-02-12 | 2015-08-19 | ams AG | Semiconductor device with a thermally stable bump contact on a TSV and method of producing such a semiconductor device |
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TWI806814B (zh) * | 2015-01-13 | 2023-07-01 | 日商迪睿合股份有限公司 | 多層基板 |
US9299686B1 (en) * | 2015-01-16 | 2016-03-29 | International Business Machines Corporation | Implementing integrated circuit chip attach in three dimensional stack using vapor deposited solder Cu pillars |
KR102467034B1 (ko) | 2016-05-17 | 2022-11-14 | 삼성전자주식회사 | 반도체 패키지 |
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JP3918350B2 (ja) * | 1999-03-05 | 2007-05-23 | セイコーエプソン株式会社 | 半導体装置の製造方法 |
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JP2003273155A (ja) * | 2002-03-18 | 2003-09-26 | Fujitsu Ltd | 半導体装置及びその製造方法 |
JP2005051146A (ja) * | 2003-07-31 | 2005-02-24 | Sony Corp | 半導体集積回路装置及びその製造方法 |
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JP2007207982A (ja) * | 2006-02-01 | 2007-08-16 | Seiko Epson Corp | 半導体装置とその製造方法 |
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