JP3821125B2 - 半導体装置の製造方法、半導体装置、回路基板、電子機器 - Google Patents
半導体装置の製造方法、半導体装置、回路基板、電子機器 Download PDFInfo
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- JP3821125B2 JP3821125B2 JP2003420807A JP2003420807A JP3821125B2 JP 3821125 B2 JP3821125 B2 JP 3821125B2 JP 2003420807 A JP2003420807 A JP 2003420807A JP 2003420807 A JP2003420807 A JP 2003420807A JP 3821125 B2 JP3821125 B2 JP 3821125B2
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2225/00—Details relating to assemblies covered by the group H01L25/00 but not provided for in its subgroups
- H01L2225/03—All the devices being of a type provided for in the same main group of the same subclass of class H10, e.g. assemblies of rectifier diodes
- H01L2225/04—All the devices being of a type provided for in the same main group of the same subclass of class H10, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L2225/065—All the devices being of a type provided for in the same main group of the same subclass of class H10
- H01L2225/06503—Stacked arrangements of devices
- H01L2225/06582—Housing for the assembly, e.g. chip scale package [CSP]
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- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L24/10—Bump connectors ; Manufacturing methods related thereto
- H01L24/15—Structure, shape, material or disposition of the bump connectors after the connecting process
- H01L24/16—Structure, shape, material or disposition of the bump connectors after the connecting process of an individual bump connector
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/81—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a bump connector
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Description
このため、近年においては、CSP(Chip Scale Package)或いはW−CSP(Wafer level Chip Scale Package)と呼ばれる技術を用いて超小型の半導体チップを製造するための研究・開発が盛んに行われている(例えば特許文献1参照)。W−CSP技術ではウェハの状態において一括して再配置配線(再配線)及び樹脂封止を行なってから個々の半導体チップに分離しているため、チップ面積と同程度の面積を有する半導体装置を製造することができる。
また、更なる高集積化のために、同様の機能を有する半導体チップ同士又は異なる機能を有する半導体チップを積層し、各半導体チップ間の電気的接続をとることで、半導体チップの高密度実装を図る三次元実装技術も案出されている。
本発明はこのような事情に鑑みてなされたもので、より簡単に高密度実装を実現できるようにした半導体装置の製造方法と、その半導体装置、並びに、この半導体装置を備えた回路基板、電子機器を提供することを目的とする。
本方法では、最終的に基板の能動面が実装面となるため、予め再配置配線等を接続端子等と同時に能動面側に形成しておくことで、従来(即ち、基板の能動面側にチップを3次元実装し、基板の裏面側を実装面とする場合)よりも工程を簡略化することができる。また本方法では、再配置配線等が基板の能動面側に形成されるので、これを基板の裏面(研磨面)に形成する従来の場合に比べて形成は容易となる。
また本方法では、上記半導体チップの実装工程を、上記基板の裏面側に上記接続端子を介して複数の半導体チップを3次元実装する工程とすることができる。この場合、半導体チップは貫通電極を有し、上記半導体チップの実装工程では、複数の半導体チップがその貫通電極を介して積層されることになる。
図1は、本発明の一実施形態による半導体装置の製造方法において処理対象として用いられる基板(半導体基板)の上面図である。処理対象となる基板10は、例えばSi(シリコン)基板であり、能動面10aには複数の区画領域(ショット領域)SAが設定されている。各々の区画領域SA内には、トランジスタ、メモリ素子、その他の電子素子並びに電気配線及び電極パッド16(図3参照)等からなる電子回路が形成されている。一方、基板10の裏面10b(図2参照)にはこれらの電子回路は形成されていない。
次に、基板10に積層される半導体チップを製造する第2処理工程について説明する。
図10は、第1処理工程で処理を行った基板10上に積層する半導体チップを製造する製造工程を示す図である。半導体チップは、応力緩和層26、再配置配線32、及びアライメントマークを形成する以外は、上述した第1処理工程とほぼ同様の工程を行って製造される。このため、以下の説明では工程順を簡単に説明し、その詳細については説明を省略する。
第1処理工程を終えた基板10は、図9(d)に示す通り、基板10の能動面10a側に粘着樹脂40及びガラス基板42が取り付けられ、基板10の裏面10bにアライメントマークが形成された状態である。この基板10に対して第2処理工程で製造された半導体チップ60を積層するには、まず半導体チップ60の貫通電極としての接続端子54に形成された無鉛ハンダ58上に接合活性剤(フラックス)を塗布する。フラックスは、半導体チップ60を基板10上に積層したときに、半導体チップ60を保持することができる程度の粘度及び量が必要となる。
なお、前述の第1処理工程において各ショット領域SAの動作検査を行なった場合には、ここで良品とされたショット領域SAにのみ良品の半導体チップ60を積層してもよい。こうすることで、良品の半導体チップ60を無駄にせずに済む。この際、不良とされたショット領域SAは空き領域としてもよいが、後述の封止工程の信頼性を高める観点からは、このようなショット領域にダミーチップを実装することが好ましい。このように空き領域を設けない(即ち、全てのショット領域SAに少なくとも1つ以上のチップを搭載する)ことで、封止樹脂62の流動が均一化され、樹脂内に気泡が巻き込まれにくくなる。
そして、図13(a)に示すように、再配置配線32の先端部に設けられたパッド34にバンプ36を形成し、各ショット領域SAに形成された半導体装置(個片化する前の個々の半導体装置)の電気的特性を一括して検査する。
次に、図13(b)に示すように、封止樹脂62を基板10を切断したのと異なるブレード若しくはレーザによって切断する。
本例の半導体装置1は、図14に示すように、接続端子24が形成された第1半導体チップとしての基板10上に、貫通電極としての接続端子54が形成された第2半導体チップとしての半導体チップ60が複数積層された構造を有する。基板10と半導体チップ60、及び半導体チップ60同士は、接続端子24若しくは貫通電極54を介して積層され、互いに電気的に接続されている。また基板10には能動面10a側に応力緩和層26、再配置配線32及びバンプ36が形成されている。尚、図14において、符号64は、パッド34に対するバンプ36の固着強度を高めるための根本補強樹脂である。
また、本方法では、最終的に基板10の能動面10aが実装面となるため、予め再配置配線32等を接続端子24等と同時に能動面側に形成しておくことで、工程が更に簡単になる。また本方法では、再配置配線32等が基板10の能動面側に形成されるので、これを基板の裏面(研磨面)に形成する従来の場合に比べて形成は容易となる。
また、本方法では、基板の切断工程において、基板本体10とその上に形成された封止樹脂62の切断方法をその材質等に応じて最適に選択しているため、工程時間を更に短縮できるとともに、切断部材の消耗も少なくすることができる。
図15は本発明の回路基板の一例を示す斜視図である。図15に示すように、この回路基板2には、前述の再配置配線を備えたICチップを3次元実装してなる半導体装置1が搭載されている。回路基板2は、例えばガラスエポキシ基板等の有機系基板からなるもので、例えば銅等からなる配線パターン(図示せず)が所望の回路となるように形成され、さらにこれら配線パターンにパッド(図示せず)が接続されている。そして、このパッドに半導体装置1のハンダボールが電気的に接続されることにより、半導体装置1は回路基板2上に実装されたものとなっている。
なお、電子機器としては、前記の携帯電話に限られることなく、種々の電子機器に適用することができる。例えば、ノート型コンピュータ、液晶プロジェクタ、マルチメディア対応のパーソナルコンピュータ(PC)及びエンジニアリング・ワークステーション(EWS)、ページャ、ワードプロセッサ、テレビ、ビューファインダ型又はモニタ直視型のビデオテープレコーダ、電子手帳、電子卓上計算機、カーナビゲーション装置、POS端末、タッチパネルを備えた装置等の電子機器に適用することができる。
Claims (10)
- 複数の電子回路が形成された能動面を有する基板の当該能動面側に、上記電子回路の外部電極となる接続端子を埋め込み形成する工程と、
上記基板の裏面を研磨して上記接続端子の一部を露出させる工程と、
上記基板の裏面側に上記接続端子を介して半導体チップを実装する工程と、
上記基板上に実装された上記半導体チップを封止材によって封止する工程と、
上記基板を各電子回路の形成領域毎に切断し、複数の半導体装置に個片化する工程とを備えたことを特徴とする、半導体装置の製造方法。 - 上記基板の切断工程では、該切断を上記基板の能動面側から行なうことを特徴とする、請求項1記載の半導体装置の製造方法。
- 上記基板の切断工程では、上記封止材を支持材として上記基板をダイシングすることを特徴とする、請求項2記載の半導体装置の製造方法。
- 上記基板の切断工程の前に、各半導体装置を一括して検査する工程を備えたことを特徴とする、請求項1〜3のいずれかの項に記載の半導体装置の製造方法。
- 上記半導体チップの実装工程の前に、上記能動面に形成された各電子回路を検査する工程を備え、上記半導体チップの実装工程では、上記電子回路の検査工程において良品とされた電子回路に対してのみ上記半導体チップを実装することを特徴とする、請求項1〜4のいずれかの項に記載の半導体装置の製造方法。
- 上記半導体チップの実装工程では、上記電子回路の検査工程において良品とされなかった電子回路に対してダミーチップを実装することを特徴とする、請求項5記載の半導体装置の製造方法。
- 上記基板の裏面側に実装する半導体チップが貫通電極を有し、上記半導体チップの実装工程では、複数の半導体チップがその貫通電極を介して積層されることを特徴とする、請求項1〜6のいずれかの項に記載の半導体装置の製造方法。
- 請求項1〜7のいずれかの項に記載の方法により製造されたことを特徴とする、半導体装置。
- 請求項8記載の半導体装置を備えたことを特徴とする、回路基板。
- 請求項8記載の半導体装置を備えたことを特徴とする、電子機器。
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JP2003420807A JP3821125B2 (ja) | 2003-12-18 | 2003-12-18 | 半導体装置の製造方法、半導体装置、回路基板、電子機器 |
KR1020040106835A KR100594669B1 (ko) | 2003-12-18 | 2004-12-16 | 반도체 장치의 제조 방법, 반도체 장치, 회로 기판 및전자기기 |
US11/014,572 US7109060B2 (en) | 2003-12-18 | 2004-12-16 | Manufacturing method of semiconductor device, semiconductor device, circuit substrate and electronic equipment |
CNB2004100819122A CN1333434C (zh) | 2003-12-18 | 2004-12-16 | 半导体装置的制造方法、半导体装置、电路基板、电子设备 |
TW093139473A TWI251314B (en) | 2003-12-18 | 2004-12-17 | Manufacturing method of semiconductor device, semiconductor device, circuit substrate and electronic equipment |
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- 2004-12-16 CN CNB2004100819122A patent/CN1333434C/zh not_active Expired - Lifetime
- 2004-12-16 US US11/014,572 patent/US7109060B2/en not_active Expired - Lifetime
- 2004-12-17 TW TW093139473A patent/TWI251314B/zh not_active IP Right Cessation
Also Published As
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US7109060B2 (en) | 2006-09-19 |
JP2005183580A (ja) | 2005-07-07 |
CN1638020A (zh) | 2005-07-13 |
KR100594669B1 (ko) | 2006-06-30 |
KR20050061357A (ko) | 2005-06-22 |
CN1333434C (zh) | 2007-08-22 |
TW200527612A (en) | 2005-08-16 |
US20050136568A1 (en) | 2005-06-23 |
TWI251314B (en) | 2006-03-11 |
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