JP2009194396A - 半導体パッケージおよびその製造方法 - Google Patents
半導体パッケージおよびその製造方法 Download PDFInfo
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- JP2009194396A JP2009194396A JP2009120410A JP2009120410A JP2009194396A JP 2009194396 A JP2009194396 A JP 2009194396A JP 2009120410 A JP2009120410 A JP 2009120410A JP 2009120410 A JP2009120410 A JP 2009120410A JP 2009194396 A JP2009194396 A JP 2009194396A
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Abstract
【解決手段】 半導体パッケージ100であって、半導体基板の第1の面に配置された電極パッド106と、前記半導体基板の第2の面から該電極パッドが露出するように、該電極パッド直下の該半導体基板内に開けられた貫通孔と、前記半導体基板の第2の面と該貫通孔の内側面とを覆い、前記電極パッドが露出するように配置された電気絶縁膜と、該電気絶縁膜を介して、前記貫通孔の内側面及び前記電極パッドの露出部を覆うように配置され、該電極パッドと電気的に接続された金属薄膜からなる貫通電極108と、該貫通電極と前記半導体基板の第2の面101bに設けられた外部配線領域とを接続するために貫通電極から延長された外部配線109と、該外部配線領域に外部端子と接続するための接続部111と、を有する。
【選択図】図1
Description
本願は、2003年8月28日に出願された日本国特許出願2003−304848と、2003年12月17日に出願された日本国特許出願2003−419613に対し優先権を主張し、その内容をここに援用する。
ウエハレベルCSPは、特許文献1に記載されているように、一般的にはシリコンウエハ素子表面に樹脂および再配線を有し、かつ半田接続のためのポスト金属あるいは半田ボールなどもシリコンウエハ素子表面の任意個所に配置されている。
本発明の請求項3に記載の半導体パッケージは、請求項1に記載の半導体パッケージであって、前記半導体基板の一方の面に接着層が設けられ、この接着層によって前記半導体基板の一方の面と支持基板とが接着、固定されている。
本発明の請求項5に記載の半導体パッケージは、請求項1に記載の半導体パッケージであって、前記貫通電極から延長されて前記外部配線領域に接続される外部配線が設けられている。
本発明の請求項7に記載の半導体パッケージは、請求項1に記載の半導体パッケージであって、前記支持基板は光透過性を有する材料からなる。
本発明の請求項9に記載の半導体パッケージは、請求項1に記載の半導体パッケージであって、前記外部配線領域は、外部端子と対向するように配置されている。
本発明の請求項11に記載の半導体パッケージは、請求項10に記載の半導体パッケージであって、前記貫通電極から他の半導体素子の端子と接続するための外部配線が延出されている。
本発明の請求項12に記載の半導体パッケージは、請求項1に記載の半導体パッケージであって、前記貫通電極のうち、前記電極パッドと接合する部分が前記電極パッドの面内に配されている。
本発明の請求項15に記載の半導体パッケージの製造方法は、請求項13に記載の半導体パッケージの製造方法であって、前記工程Cにおいて、前記電極パッドが前記貫通孔内に露出した時点で前記貫通孔の形成を停止する。
本発明の請求項17に記載の半導体パッケージの製造方法は、請求項13に記載の半導体パッケージの製造方法であって、前記工程Dにおいて、前記外部配線領域に、外部端子を接続するための接続部を設ける。
本発明の請求項19に記載の半導体パッケージの製造方法は、請求項13に記載の半導体パッケージの製造方法であって、前記半導体基板として、前記電極パッドが、前記半導体基板の一方の面において前記回路素子が存しない領域に配置されている半導体基板を用いる。
本発明の請求項20に記載の半導体パッケージの製造方法は、請求項13に記載の半導体パッケージの製造方法であって、前記工程Dの後に、前記半導体基板の他方の面側において、前記接続部以外の部分を全て保護膜で被覆する工程を有する。
前記半導体基板の一方の面に接着層が設けられ、この接着層によって前記半導体基板の一方の面と支持基板とが接着、固定されてもよい。
前記電極パッドは、前記半導体基板の一方の面において前記回路素子が存しない領域に配置されてもよい。
前記工程Dにおいて、前記貫通孔内に貫通電極を形成すると同時に、前記外部配線領域と貫通電極を接続するための外部配線を形成してもよい。
前記工程Dにおいて、前記外部配線領域に外部端子を接続するための接続部を設けてもよい。
前記半導体基板として、前記電極パッドが、前記半導体基板の一方の面において前記回路素子が存しない領域に配置されている半導体基板を用いてもよい。
まず、図1A〜図3Dを用いて、本発明の第一の態様に係る半導体パッケージについ説明する。
図1Aは、本発明の第一の態様に係る半導体パッケージの一例を示す平面図である。図1Bは、図1A中、X−X線に沿う断面図である。図1Cは、本発明の第一の態様に係る半導体パッケージの他の例であり、図1Aの底面に相当する部分からみた斜視図である。
以下の説明では、半導体素子102として固体撮像素子を例示する。また、半導体素子自体の構造などについての詳細な説明は省略し、本発明に係る部分についてのみ説明する。
貫通電極108から延長された外部配線109は、電気絶縁膜107を介して他方の面101bに設けられている。
なお、図1Cに示すように、保護膜113を設けずに、貫通電極108や外部配線109を露出したままの形態としてもよい。
支持基板104としては、固体撮像素子の半導体素子102の感度波長域、すなわち有効波長域に対して十分実用的な透過率を有する材料からなるものが用いられる。特に、半導体素子102との接合温度における熱膨張率が半導体シリコン基板に近い材料が望ましい。
接着層105をなす接着剤としては、電気絶縁性を有しかつ十分な透過率を有する材料からなるものが用いられる。接着層105をなす接着剤としては、例えばポリイミド樹脂、エポキシ樹脂、ベンゾシクロブタン(BCB)樹脂などが望ましい。
金属ポスト111をなす材料としては、外部端子との接続に好ましい材料が用いられ、一般的には、銅、金、半田などが望ましい。
図4A〜図4Dおよび図5A〜図5Cは、ダイシング加工された半導体素子を用いた半導体パッケージの略製造工程の一例を示す断面図である。図6A〜図6Eは、ウエハ状の半導体基板を用いた半導体パッケージの略製造工程の一例を示す断面図である。
ここでは、主に図4A〜図4Dおよび図5A〜図5Cを用いて説明する。
半導体素子202と支持基板204との接合完了後の状態を図4Bおよび図6Aに示す。
続いて、図4Cおよび図6Bに示すように、半導体基板201の他方の面201b側から、半導体基板201を研摩加工して薄化する。
ここで、この工程において、電極パッド206の他方の面(底面)206aが貫通孔208内に露出するとは、電極パッド206の他方の面(底面)206aのうち、貫通孔208の大きさ(貫通孔208の深さ方向と垂直な断面208bの面積)とほぼ等しい面積の部分が露出することを示している。
金属ポスト214の形成には、電解メッキ法、スタッドバンプ法などが用いられる。
金属ポスト214をなす材料としては、銅、金、半田などが好ましいが、別の基板の外部端子(図示略)と接続可能であれば、他の材料であってもよい。
ダイシング加工には、一般的なダイシング装置、あるいは、エッチング装置などが用いられる。
貫通電極および外部配線を全て一般的な半導体製造装置を用いて加工できる。このため、安価かつ小型の半導体パッケージを実現できる。
次に、図7A、図7B、図8、図9を用いて、本発明の第二の態様に係る半導体パッケージについて説明する。
ここでは、主に図10A〜図10Cを用いて説明する。
ウエハ状態の半導体基板を用いて半導体パッケージを製造する場合、最後に、ウエハ状態の半導体パッケージをダイシングライン(図11Dの2点鎖線)に沿ってダイシング加工する。これにより図10Cに示すようなチップ化した半導体パッケージを得る。
なお、本発明にあっては、半導体素子としては、この第二の態様の一例として示した固体撮像素子以外にも、発光素子、一般的なICチップあるいはマイクロマシン素子なども適用可能である。
貫通電極および外部配線を全て一般的な半導体製造装置を用いて加工できる。このため、安価かつ小型の半導体パッケージを実現することができる。
Claims (20)
- 半導体パッケージであって、
半導体基板の一方の面に回路素子が設けられた半導体素子と、
前記半導体基板の他方の面に設けられた外部配線領域と、
前記半導体基板の一方の面に配置された支持基板と、
前記半導体基板の一方の面に配置された電極パッドと、
前記電極パッドから前記半導体基板の他方の面に到達する貫通電極と、を有する。 - 請求項1に記載の半導体パッケージであって、
前記外部配線領域に、外部端子を接続するための接続部が設けられている。 - 請求項1に記載の半導体パッケージであって、
前記半導体基板の一方の面に接着層が設けられ、この接着層によって前記半導体基板の一方の面と支持基板とが接着、固定されている。 - 請求項1に記載の半導体パッケージであって、
前記電極パッドは、前記半導体基板の一方の面において前記回路素子が存しない領域に配置されている。 - 請求項1に記載の半導体パッケージであって、
前記貫通電極から延長されて前記外部配線領域に接続される外部配線が設けられている。 - 請求項2に記載の半導体パッケージであって、
前記半導体基板の他方の面側において、前記接続部以外の部分が全て保護膜で被覆されている。 - 請求項1に記載の半導体パッケージであって、
前記支持基板は光透過性を有する材料からなる。 - 請求項3に記載の半導体パッケージであって、
前記接着層は、少なくとも前記半導体基板の一方の面のうち、前記電極パッドの存する領域に設けられている。 - 請求項1に記載の半導体パッケージであって、
前記外部配線領域は、外部端子と対向するように配置されている。 - 請求項1に記載の半導体パッケージであって、
前記半導体基板が2層以上積層されている。 - 請求項10に記載の半導体パッケージであって、
前記貫通電極から他の半導体素子の端子と接続するための外部配線が延出されている。 - 請求項1に記載の半導体パッケージであって、
前記貫通電極のうち、前記電極パッドと接合する部分が前記電極パッドの面内に配されている。 - 半導体基板の一方の面に回路素子が設けられた半導体素子と、前記半導体基板の他方の面に設けられた外部配線領域と、を備えた半導体パッケージの製造方法であって、
前記半導体基板の一方の面に支持基板を接着固定する工程Aと、
前記半導体基板の他方の面を薄化する工程Bと、
前記半導体基板の一方の面に配置された電極パッドに到達する貫通孔を、前記半導体基板の他方の面から形成する工程Cと、
前記貫通孔内に貫通電極を形成する工程Dと、を有する。 - 請求項13に記載の半導体パッケージの製造方法であって、
前記工程Cにおいて、前記貫通孔を、少なくとも前記電極パッドと接する部分において貫通孔の断面が前記電極パッド内に配されるように形成する。 - 請求項13に記載の半導体パッケージの製造方法であって、
前記工程Cにおいて、前記電極パッドが前記貫通孔内に露出した時点で前記貫通孔の形成を停止する。 - 請求項13に記載の半導体パッケージの製造方法であって、
前記工程Dにおいて、前記貫通孔内に貫通電極を形成すると同時に、前記外部配線領域と貫通電極を接続するための外部配線を形成する。 - 請求項13に記載の半導体パッケージの製造方法であって、
前記工程Dにおいて、前記外部配線領域に、外部端子を接続するための接続部を設ける。 - 請求項13に記載の半導体パッケージの製造方法であって、
前記工程Aにおいて、ウエハ状の半導体基板を備えた半導体素子を用意し、
前記工程Dの後に、前記ウエハ状の半導体基板をダイシング加工する工程Eを有する。 - 請求項13に記載の半導体パッケージの製造方法であって、
前記半導体基板として、前記電極パッドが、前記半導体基板の一方の面において前記回路素子が存しない領域に配置されている半導体基板を用いる。 - 請求項13に記載の半導体パッケージの製造方法であって、
前記工程Dの後に、前記半導体基板の他方の面側において、前記接続部以外の部分を全て保護膜で被覆する工程を有する。
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WO2012015076A1 (en) | 2010-07-29 | 2012-02-02 | Fujifilm Corporation | Polymerizable composition |
US8728712B2 (en) | 2010-07-29 | 2014-05-20 | Fujifilm Corporation | Polymerizable composition |
US8766388B2 (en) | 2010-09-22 | 2014-07-01 | Fujifilm Corporation | Polymerizable composition, and photosensitive layer, permanent pattern, wafer-level lens, solid-state imaging device and pattern forming method each using the composition |
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JPWO2016117124A1 (ja) * | 2015-01-23 | 2017-11-02 | オリンパス株式会社 | 撮像装置および内視鏡 |
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EP1662564B1 (en) | 2018-05-30 |
US7180149B2 (en) | 2007-02-20 |
AU2004268299A1 (en) | 2005-03-10 |
KR101180815B1 (ko) | 2012-09-07 |
JPWO2005022631A1 (ja) | 2006-10-26 |
CA2536799A1 (en) | 2005-03-10 |
US20050056903A1 (en) | 2005-03-17 |
EP1662564A1 (en) | 2006-05-31 |
WO2005022631A1 (ja) | 2005-03-10 |
KR20060115720A (ko) | 2006-11-09 |
JP4722702B2 (ja) | 2011-07-13 |
AU2004268299B2 (en) | 2009-05-21 |
EP1662564A4 (en) | 2011-08-03 |
CA2536799C (en) | 2013-11-12 |
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