JPH08316194A - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法Info
- Publication number
- JPH08316194A JPH08316194A JP7120236A JP12023695A JPH08316194A JP H08316194 A JPH08316194 A JP H08316194A JP 7120236 A JP7120236 A JP 7120236A JP 12023695 A JP12023695 A JP 12023695A JP H08316194 A JPH08316194 A JP H08316194A
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- JP
- Japan
- Prior art keywords
- wafer
- substrate
- semiconductor device
- chip
- manufacturing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
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- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
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Abstract
ドリングが容易な半導体装置の製造方法を提供する。 【構成】テープ107に貼り付けられたウエハ105
を、ウエハ105の面内で高速で回転または横方向に往
復運動させ、ウエハ105の表面に対してエッチ液高速
に横方向に移動させ、ウエハ105を均一にエッチング
して薄くし、この薄いウエハをダイシングして得られた
薄いチップ105´を加熱ヘッド106によって加熱圧
接して、基板102上に固着する。 【効果】薄いチップを安定かつ低コストで形成し、チッ
プの割れを生ずることなしに基板に固着できる。
Description
関し、特に極めて薄い半導体装置を安定かつ低コストで
形成するのに好適な半導体装置の製造方法に関する。
たとえば「LSIハンドブック」(社団法人電子通信学
会編株式会社オーム社、昭和59年11月30日発行、
第406頁〜416頁)などに記載されており、これら
従来の半導体装置の組立て技術では、直接ハンドリング
を行っても、割れないほぼ200μm以上の厚さを有す
る半導体チップが扱われていた。
ウエハを薄くする手段としては、研磨法が広く用いられ
ている。しかし、研磨法によって半導体ウエハを均一
に、たとえば5%以内の加工精度で加工するためには、
ウエハと研磨装置の並行出しを、高精度かつ高い再現性
で行わなう必要があり、このような極めて高い並行出し
を行うためには、極めて高価な装置が必要であり、実用
は困難であった。また、半導体ウエハの厚さをモニタし
ながら、研磨を行う方法も行われているが、広い範囲の
厚さ領域でこの方法を行うと、所要時間が著しく長くな
って生産性が低下してしまう。
1μmの程度と極めて薄くなるまで研磨を行うと、半導
体ウエハ表面のデバイスが、研磨によって生ずるストレ
スのために破壊されてしまうという問題もあった。さら
に、このように薄くされた半導体チップを、上記従来技
術によって直接ハンドリングを行うと、半導体チップ自
体が破壊されてしまうという問題があり、高い歩留と低
いコストで、半導体装置を形成するのは困難であった。
題を解決し、半導体チップの厚さを0.1から110μ
m程度まで薄くすることができ、かつ、このような極め
て薄いチップを、割れの発生なしにハンドリングするこ
とができる半導体装置の製造方法を提供することであ
る。
め、本発明は、ウエハをテープに貼り付け、このウエハ
の表面方向内で高速度に回転若しくは横方向に往復運動
させながら、エッチ液と接触させることによって、ウエ
ハを均一にエッチングして膜厚を極めて小さくした後、
薄くされたウエハをダイジングして複数のチップに分割
し、これら各薄いチップを、対象基板に加熱圧順次接し
て固着させるものである。
において、急速度で回転若しくは往復運動しながら、エ
ッチ液と接触されるので、極めて均一にエッチングが行
われ、凹凸や歪の発生なしに、極めて薄いウエハを得る
ことができる。
成された複数の薄いチップは、第1の基板であるテープ
上から順次分離されて、加熱および圧接されるため、チ
ップが極めて薄いにもかかわらず、割れの発生なしに上
記第2の基板上に固着することができる。特に、上記第
1の基板として軟質のテープを用いることにより、所望
のチップのみを上方に押し上げ、このチップのみを選択
的に加熱できるので、所望のチップを上記第2の基板へ
固着するのは極めて容易である。
を、導電性接着剤を介して行うことによって、ワイヤボ
ンデイングは不要になり、工程の簡略化とコストの低減
に極めて有効である。
る。 〈実施例1〉図1に示したように、薄い半導体ウエハ1
05は、枠101によって保持されたテープ(日立化成
株式会社製、HA−1506)107の上に置かれ、こ
の半導体ウエハ105は、ダイシング溝104によって
複数のチップ105´に分離されている。分離された各
チップ105´は、加熱ヘッド106によってテープ1
07の裏面から上方へ押し上げられ、接着剤103が塗
布された基板102に押しつけられて、当該基板102
に加熱接着される。この接着剤103は、有機物質と導
電性粒子の複合材料からなる異方導電性接着剤であるた
め、基板102に形成された電極(図示せず)と薄型チ
ップ105が有する電極(図示せず)は、加圧と加熱に
よって互いに電気的に接続される。なお、上記チップ1
05´は、厚さが0.1〜10μm程度で、曲げること
が可能な極めて薄いチップである。厚さが0.1μmよ
り小さいと、このチップ105´に各種半導体素子を形
成するのが困難になり、10μmより大きいと、曲げに
よって割れの生ずる恐れがある。
め、加熱ヘッド106によってテープ107を加熱しな
がら上方へ押し上げることによって、テープ107上の
上記薄いチップ105´も押し上げられ、基板102と
均一かつ安定に接着される。
ープ107は枠101によって保持され、ウエハ105
はダイシング溝104によってチップ105´に互いに
分離されている。ウエハ105の周囲304は枠101
の内側にあって、テープ107に平坦に接着されてい
る。枠101はステンレスまたはプラスチック材で形成
されている。ウエハ105の厚さは0.1から110μ
mと極めて薄いにもかかわらず、粘着剤によってテープ
107に強固に粘着されているため、ウエハ105をテ
ープ107に粘着した状態でダイシングを行っても、薄
いチップ105´がテープ107から、ばらばらに剥離
してしまうことはない。
着した後の状態を図4に示した。図4(1)は平面図、
図4(2)は断面図である。基板102の上には、位置
合わせされて薄いチップ105´が固着されている。薄
いチップ105´に形成された電極と基板102に形成
された電極は、フェースダウンボンデイングによって互
いに接続されている。しかし、ワイヤボンディングある
いは導電性ペーストによって互いに接続してもよい。
容易にできるため、半導体装置の薄型化、高機能化およ
び低コスト化が促進されて、新しい応用展開をもたらす
ことができる。
に示した薄いチップ105´と基板102の接続部を拡
大して模式的に示した断面図である。図4(3)に示し
たように、パッド405は薄いチップ105´表面の、
パッシベーション膜408が除去された部分に設けられ
ており、導電性粒子406によって、基板102の表面
上に設けられた基板電極412に接続され、互いに導通
されている。基板102とチップ105´の間には有機
フィルム409が介在して設けられており、この有機フ
ィルム409の中に導電粒子410が含まれていて、こ
の導電性粒子410によって両者間が導通される。
うに、テープ203上のチップ202は、真空チャック
201によってハンドリングされて他の基板(図示せ
ず)上へ移動される。すなわち、テープ203の上に置
かれたチップ202は、ウエハのダイシングによって形
成された個別のチップであり、突き上げピン204によ
って突き上げられたチップ202は、真空チャック20
1によって吸引されて1個ずつ順次移動される。
り、紫外線(UV)照射または加熱によって、接着性は
低下しているが、なおわずかに接着性が残っているの
で、真空チャック201と連動して動作する突き上げピ
ン204によって、チップ202はテープ203から分
離できる。しかし、この突き上げピン204によって上
方へ突き上げる従来も方法では、チップ202の厚さが
0.1から110μmと極めて薄い場合は、チップ20
2に割れが入りやすくなり、生産性が低下してしまう。
方法を示す。図5(1)に示したように、ウエハ105
は、枠101に貼られたテープ107上に粘着剤によっ
て固定されており、エッチ液ノズル501からエッチ液
502が滴下されて、ウエハ105の表面がエッチされ
る。エッチ液502としては、本実施例では水酸化カリ
ウムの水溶液(濃度40%)を用いたが、水酸化カリウ
ム以外のエッチ液を用いてもよい。
転以上の高速度で回転されるので、図5(2)に示した
ように、エッチ液502は、ウエハ105の表面上を横
方向に高速度で移動する。そのため、ウエハ105の表
面は、段差やダメージの発生なしに均一にエッチされ、
ウエハ105は薄い膜になた。
ハ105を毎分1、000往復以上の高速往復運動する
ことにより、エッチ液502はウエハ105の表面上を
横方向に高速度でに移動し、ウエハ105の表面は、段
差やダメージの発生なしに均一にエッチされ、薄膜化さ
れた。
示す工程図である。図6(1)に示したように、枠10
1に貼られたテープ107の上に、ウエハ105を固定
した後、上記実施例2に示した方法によってウエハ10
5を薄くして、図6(2)に示す断面構造を形成し、さ
らに、図6(3)に示したように、ウエハ105にダイ
シング溝104を形成し、ウエハ105を複数のチップ
105´に分割した。
02にチップ105´を位置合わせした後、加熱ヘッド
106を下から押し当てて、所望のチップ105´を加
熱加圧し、図6(5)に示したように、基板102に薄
いチップ105´を移し、接着剤103を介して固着さ
せた。各チップ105´の特性は、分割前のウエハ状態
のときに、あらかじめ測定されており、良品と不良品が
それぞれ明確となっているので、良品のチップのみを選
択的に位置合わせし、基板102に移して固着した。な
お、実施例2および3においては、テープ107として
実施例1に用いたと同じものを用いたが、それ以外の各
種テープを使用できることは、いうまでもない。
示す工程図であり、薄いチップの主面側を基板主面を対
向させて、フェースダウンボンデイングによって接合し
た例である。まず、図7(1)に示したように、第1の
枠101に貼られた第1のテープ107の上にウエハ1
05を固定し、図7(2)に示したように、上記実施例
2と同様にして、ウエハ105を薄くした。
の表面を下向きにして、第2の枠101´に貼られた第
2のテープ107´の表面に対向させて貼り合わせた。
上記第1のテープ107をウエハ105から剥離して、
ウエハ105が第2のテープ107´の表面上に形成さ
れた構造とした後、図7(4)に示したように、ウエハ
105にダイシング溝104を形成して、複数のチップ
105´に分離させた。
02に上記チップ105´を位置合わせして加熱ヘッド
106を下から押し当てて加熱加圧し、図7(6)に示
したように、基板102に薄いチップ105´を異方導
電性接着剤709を介して接着した。
のテープ107´に移された後に基板102に移され
る。そのため、半導体チップ105´の表裏が上記実施
例1の場合とは逆になって、当初のウエハ105上面
が、基板102に固着された状態でも上面になる。した
がって、本実施例では、ウエハ105を薄くした後、所
望半導体素子をウエハ105の表面に形成すれば、この
半導体素子が、基板102の表面に形成されたチップ1
05´の表面に配置される。
よって下記効果が得られる。 (1)半導体ウエハの主面に沿って移動する高速なエッ
チ液によって、ウエハが薄くされるので、膜厚が均一な
薄いウエハを容易に得ることができ、歪や欠陥が発生す
る恐れはない。
離と基板上への接着が同一の工程で行われるため、薄い
チップを割ることなしに、基板上に固着できる。
加圧して上記基板上に移すので、極めて容易かつ低コス
トで、薄いチップを基板へ実装できる。
着することにより、ワイヤボンディングなしに、各チッ
プを基板上に接続できる。
0.1から110μmと極めて薄くされるので、曲げに
強い薄いの半導体装置を実現できる。
の図、
103…接着剤、104…ダイシング溝、 105…
ウエハ、 105´…チップ、106…加熱ヘッド、
107…テープ、 107´…第2のテープ、201…
真空チャック、 202…チップ、 203…テープ、
204…突き上げピン、 304…ウエハの周囲、 4
05…パッド、406…電極間導電粒子、 408…パ
ッシベーション膜、409…有機フィルム、 410…
導電粒子、 412…基板電極、501…エッチ液ノズ
ル、 502…エッチ液。
Claims (12)
- 【請求項1】第1の基板上に保持された半導体ウエハの
主面とエッチ液を接触させ、上記半導体ウエハの主面に
沿って、上記エッチ液を高速度で動かすことによって、
上記半導体ウエハの厚さを小さくする工程と、当該厚さ
を小さくされたウエハをカットして複数のチップに分離
する工程と、当該チップを上記第1の基板から分離して
第2の基板へ固着する工程を含むことを特徴とする半導
体装置の製造方法。 - 【請求項2】上記半導体ウエハの厚さを小さくする工程
は、当該ウエハの表面を上記エッチ液と接触させ、上記
ウエハを当該ウエハの平面方向内で回転若しくは往復運
動させることによって行われることを特徴とする請求項
1に記載の半導体装置の製造方法。 - 【請求項3】上記第1の基板はテープであることを特徴
とする請求項1若しくは2に記載のの半導体装置の製造
方法。 - 【請求項4】上記はテープは有機物質からなる軟質テー
プであることを特徴とする請求項3に記載のの半導体装
置の製造方法。 - 【請求項5】上記チップを上記第1の基板から分離して
第2の基板へ固着する工程は、所望の上記チップを選択
的に加熱して上記第2の基板に対して圧接することによ
って行われることを特徴とする請求項3若しくは4に記
載の半導体装置の製造方法。 - 【請求項6】上記チップを上記第1の基板から分離して
第2の基板へ固着する工程は、上記テープの下に設けた
加熱ヘッドによって上記チップを押し上げかつ加熱する
ことによって行われることを特徴とする請求項5に記載
の半導体装置の製造方法。 - 【請求項7】上記チップと上記第2の基板の固着は、当
該第2の基板の表面上に形成された接着剤層によって行
われることを特徴とする請求項1から6のいずれか一に
記載の半導体装置の製造方法。 - 【請求項8】上記接着剤層は異方性導電性接着剤層であ
ることを特徴とする請求項7に記載の半導体装置の製造
方法。 - 【請求項9】上記チップの表面に形成された電極と、上
記第2の基板の表面に形成された電極は、互いに対向し
て電気的に接続されることを特徴とする請求項1から8
のいずれか一に記載の半導体装置の製造方法。 - 【請求項10】上記半導体ウエハの厚さを小さくする工
程と当該厚さを小さくされたウエハをカットして複数の
チップに分離する工程の間に、当該厚さを小さくされた
ウエハを第3の基板に移す工程が介在し、上記チップは
上記第3の基板から分離されて上記第2の基板へ固着さ
れることを特徴とする請求項1に記載の半導体装置の製
造方法。 - 【請求項11】上記第3の基板は軟質のテープからなる
ことを特徴とする請求項10に記載の半導体装置の製造
方法。 - 【請求項12】上記半導体ウエハの厚さを小さくする工
程により、上記ウエハの厚さは0.1から110μmに
なることを特徴とする請求項1から11のいずれか一に
記載の半導体装置の製造方法。
Priority Applications (15)
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JP12023695A JP3197788B2 (ja) | 1995-05-18 | 1995-05-18 | 半導体装置の製造方法 |
US08/952,344 US5893746A (en) | 1995-05-18 | 1996-05-14 | Semiconductor device and method for making same |
CA002221127A CA2221127A1 (en) | 1995-05-18 | 1996-05-14 | Semiconductor device and method for making same |
AU56598/96A AU718934B2 (en) | 1995-05-18 | 1996-05-14 | Semiconductor device and method for making same |
CNB02123244XA CN100466224C (zh) | 1995-05-18 | 1996-05-14 | 半导体器件的制造方法 |
KR1019970708198A KR100606254B1 (ko) | 1995-05-18 | 1996-05-14 | 반도체장치및그제조방법 |
EP96913741A EP0828292B1 (en) | 1995-05-18 | 1996-05-14 | Manufacture of a semiconductor device |
PCT/JP1996/001263 WO1996036992A1 (en) | 1995-05-18 | 1996-05-14 | Semiconductor device and its manufacture |
CN96194858A CN1098534C (zh) | 1995-05-18 | 1996-05-14 | 半导体器件的制造方法 |
DE69636338T DE69636338T2 (de) | 1995-05-18 | 1996-05-14 | Verfahren zur herstellung einer halbleitervorrichtung |
TW085105952A TW420867B (en) | 1995-05-18 | 1996-05-20 | Semiconductor device and the manufacturing method thereof |
US09/289,658 US6162701A (en) | 1995-05-18 | 1999-04-12 | Semiconductor device and method for making same |
JP33672099A JP3618268B2 (ja) | 1995-05-18 | 1999-11-26 | 半導体装置の製造方法 |
US09/729,191 US6514796B2 (en) | 1995-05-18 | 2000-12-05 | Method for mounting a thin semiconductor device |
US10/260,409 US6589818B2 (en) | 1995-05-18 | 2002-10-01 | Method for mounting a thin semiconductor device |
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JP12023695A JP3197788B2 (ja) | 1995-05-18 | 1995-05-18 | 半導体装置の製造方法 |
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JP33671999A Division JP3197884B2 (ja) | 1995-05-18 | 1999-11-26 | 実装方法 |
JP33671899A Division JP2000195829A (ja) | 1999-01-01 | 1999-11-26 | 半導体装置の製造方法及びダイシング方法 |
JP33672099A Division JP3618268B2 (ja) | 1995-05-18 | 1999-11-26 | 半導体装置の製造方法 |
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US (4) | US5893746A (ja) |
EP (1) | EP0828292B1 (ja) |
JP (1) | JP3197788B2 (ja) |
KR (1) | KR100606254B1 (ja) |
CN (2) | CN1098534C (ja) |
AU (1) | AU718934B2 (ja) |
CA (1) | CA2221127A1 (ja) |
DE (1) | DE69636338T2 (ja) |
TW (1) | TW420867B (ja) |
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JP2007311689A (ja) * | 2006-05-22 | 2007-11-29 | Matsushita Electric Ind Co Ltd | 半導体超音波接合方法及び装置 |
JP2007311687A (ja) * | 2006-05-22 | 2007-11-29 | Matsushita Electric Ind Co Ltd | 半導体接合方法及び装置 |
JP4589266B2 (ja) * | 2006-05-22 | 2010-12-01 | パナソニック株式会社 | 半導体超音波接合方法 |
JP4589265B2 (ja) * | 2006-05-22 | 2010-12-01 | パナソニック株式会社 | 半導体接合方法 |
JP2009054679A (ja) * | 2007-08-24 | 2009-03-12 | Lintec Corp | ウェハ加工用シート |
JP2017528006A (ja) * | 2014-08-05 | 2017-09-21 | ユニカルタ・インコーポレイテッド | 組み立てが容易な超小型または超薄型離散コンポーネントの構成 |
US10529614B2 (en) | 2014-08-05 | 2020-01-07 | Uniqarta, Inc. | Setting up ultra-small or ultra-thin discrete components for easy assembly |
US10937680B2 (en) | 2014-08-05 | 2021-03-02 | Uniqarta, Inc. | Setting up ultra-small or ultra-thin discrete components for easy assembly |
US11728201B2 (en) | 2014-08-05 | 2023-08-15 | Kulicke And Soffa Industries, Inc. | Methods for releasing ultra-small or ultra-thin discrete components from a substrate |
Also Published As
Publication number | Publication date |
---|---|
DE69636338T2 (de) | 2007-07-05 |
US6162701A (en) | 2000-12-19 |
US20030027376A1 (en) | 2003-02-06 |
KR100606254B1 (ko) | 2006-12-07 |
EP0828292B1 (en) | 2006-07-12 |
US6589818B2 (en) | 2003-07-08 |
CN1098534C (zh) | 2003-01-08 |
US20010000079A1 (en) | 2001-03-29 |
EP0828292A4 (en) | 2000-01-05 |
AU5659896A (en) | 1996-11-29 |
US5893746A (en) | 1999-04-13 |
JP3197788B2 (ja) | 2001-08-13 |
CN1188563A (zh) | 1998-07-22 |
KR19990014853A (ko) | 1999-02-25 |
CN1514479A (zh) | 2004-07-21 |
EP0828292A1 (en) | 1998-03-11 |
US6514796B2 (en) | 2003-02-04 |
CN100466224C (zh) | 2009-03-04 |
CA2221127A1 (en) | 1996-11-21 |
TW420867B (en) | 2001-02-01 |
DE69636338D1 (de) | 2006-08-24 |
WO1996036992A1 (en) | 1996-11-21 |
AU718934B2 (en) | 2000-05-04 |
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