JP2007500436A - 耐化学処理保護層を有する積層構造体の製造法 - Google Patents
耐化学処理保護層を有する積層構造体の製造法 Download PDFInfo
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- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
- H01L21/76251—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques
- H01L21/76259—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology using bonding techniques with separation/delamination along a porous layer
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- H01L21/7624—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using semiconductor on insulator [SOI] technology
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Abstract
Description
i)特に埋込層が薄肉層の下にある場合の近接部位における欠陥の存在
ii)積層構造体に対するエッチング溶液の強度の作用
・長時間曝露によるもの
・埋込層の材料に対してエッチング性をもつ化学種が高濃度であることによるもの
a.前記埋込層の形成工程を含む前記構造体の複数の層の形成工程と、
b.前記埋込層の構成材料を実質的にエッチング可能な化学種を用いた前記構造体の化学処理工程、
との一連の工程を備えた積層構造体の製造法において、
工程a)内に、工程b)の化学処理で用いられる化学種の化学的浸食に実質的に耐える材料によって該化学種による前記埋込層への侵入を阻止可能とする保護層をそれ自体も埋め込みにより前記埋込層の上に形成する保護層形成工程を備えたことを特徴とするものである。
・接合界面5のレベルで2枚の基板1と6を接合するボンディング工程、及び
・ドナー基板6を薄肉化して、受容基板1と、ドナー基板6の残余部分の薄肉化で残された薄肉層4とからなる積層構造体(基板)を最終的に得る工程、
を含んでいる。
・化学種への薄層分離可能な積層構造体10の長時間曝露
・化学種の特に高い濃度
・化学種への薄層分離可能な積層構造体10の長時間曝露
・化学種の高濃度
これらの原因により、脆弱ゾーン20のレベルで積層構造体10に環状凹みが形成される。
・先ず、移載積層構造体6を薄肉層4に接合する。
・次に、脆弱ゾーン20のレベルで積層体を分離する。
・最後に、保護層3を除去する。
Claims (18)
- 電子工学、光学又は光電子工学向けの埋込層を含む複数の層からなる積層構造体を製造するために、
a.前記埋込層の形成工程を含む前記構造体の複数の層の形成工程と、
b.前記埋込層の構成材料を実質的にエッチング可能な化学種を用いた前記構造体の化学処理工程、
との一連の工程を備えた積層構造体の製造法において、
工程a)内に、工程b)の化学処理で用いられる化学種の化学的浸食に実質的に耐える材料によって該化学種による前記埋込層への侵入を阻止可能とする保護層をそれ自体も埋め込みにより前記埋込層の上に形成する保護層形成工程を備えたことを特徴とする積層構造体の製造法。 - 工程a)が、2枚のウエハを接合するボンディング工程を含むことを特徴とする請求項1に記載の方法。
- 工程a)が、前記ボンディング工程の前に、前記埋込層を形成する工程と少なくとも一方のウエハの接合面に前記保護層を形成する工程とを含むことを特徴とする請求項2に記載の方法。
- 工程a)が、前記ボンディング工程の前に、2枚のウエハの一方の接合面に前記埋込層を形成する工程と2枚のウエハの他方の接合面に前記保護層を形成する工程とを含むことを特徴とする請求項2に記載の方法。
- 工程a)が、ボンディング工程の後に、スマート・カット(Smart-Cut:登録商標)法、薄肉化すべきウエハ内の埋込多孔層のレベルでの分離、一層に対する横方向への選択的化学浸食処理、ラッピング、研磨、化学−機械的研磨処理(CMP)、化学エッチング、及び摩滅処理のうちのいずれかによって2枚のウエハの一方を薄肉化することにより、この薄肉化されたウエハを前記保護層とその上の薄肉層のみからなる積層体にする工程を含むことを特徴とする請求項2〜4のいずれか1項に記載の方法。
- 工程a)によって製造される前記構造体がセミコンダクタ・オン・インシュレータ構造体であり、前記埋込層を該構造体の絶縁層の少なくとも一部とすることを特徴とする請求項5に記載の方法。
- 前記保護層も前記構造体の前記絶縁層の厚み内に含めることを特徴とする請求項6に記載の方法。
- 工程a)によって製造される前記構造体が脆弱ゾーンを有することを特徴とする請求項1〜7のいずれか1項に記載の方法。
- 前記脆弱ゾーンが2つの層の間の界面であり、この2つの層の少なくとも一方が粗い表面を有することを特徴とする請求項8に記載の方法。
- 工程a)が、前記ボンディング工程の前に、2枚のウエハの内の一方の接合面上に化学的粗面化処理によって脆弱ゾーンを形成する工程を含むことを特徴とする請求項2〜7のいずれか1項に記載の方法。
- 前記埋込層がSiO2からなることを特徴とする請求項1〜10のいずれか1項に記載の方法。
- 前記埋込層がSiO2からなり、工程a)内で接合対象の2枚のウエハの一方のシリコン表面を酸化処理することによって該埋込層を形成することを特徴とする請求項2〜10のいずれか1項に記載の方法。
- 工程b)で用いる前記化学種がフッ化水素酸を含有することを特徴とする請求項11又は12に記載の方法。
- 前記保護層が窒化物材料からなることを特徴とする請求項11〜13のいずれか1項に記載の方法。
- 前記保護層が窒化物からなり、工程a)内で接合対象の2枚のウエハの一方の接合面に窒化物を堆積することによって該保護層を形成することを特徴とする請求項2〜14のいずれか1項に記載の方法。
- 前記保護層がSi3N4からなることを特徴とする請求項14又は15に記載の方法。
- 薄層分離可能な積層構造体の製造における請求項8〜10のいずれか1項に記載の方法の使用。
- セミコンダクタ・オン・インシュレータ積層構造体の製造における請求項6又は7に記載の方法の使用。
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FR0309380A FR2858461B1 (fr) | 2003-07-30 | 2003-07-30 | Realisation d'une structure comprenant une couche protegeant contre des traitements chimiques |
PCT/FR2004/002040 WO2005013338A2 (fr) | 2003-07-30 | 2004-07-29 | Realisation d’une structure comprenant une couche protegeant contre des traitements chimiques |
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US (1) | US7169683B2 (ja) |
EP (1) | EP1649509A2 (ja) |
JP (1) | JP2007500436A (ja) |
KR (1) | KR100751619B1 (ja) |
CN (1) | CN100401499C (ja) |
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Cited By (2)
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JP2010507918A (ja) * | 2006-10-27 | 2010-03-11 | エス. オー. アイ. テック シリコン オン インシュレーター テクノロジーズ | 欠陥クラスタを有する基板内に形成された薄層の転写のための改善された方法 |
JP2011510507A (ja) * | 2008-01-21 | 2011-03-31 | エス オー イ テク シリコン オン インシュレータ テクノロジース | 複合構造上でエピタキシーによって成長する層の製造方法 |
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US7678668B2 (en) * | 2007-07-04 | 2010-03-16 | Semiconductor Energy Laboratory Co., Ltd. | Manufacturing method of SOI substrate and manufacturing method of semiconductor device |
US20110180896A1 (en) * | 2010-01-25 | 2011-07-28 | International Business Machines Corporation | Method of producing bonded wafer structure with buried oxide/nitride layers |
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FR2858461B1 (fr) * | 2003-07-30 | 2005-11-04 | Soitec Silicon On Insulator | Realisation d'une structure comprenant une couche protegeant contre des traitements chimiques |
FR2866983B1 (fr) * | 2004-03-01 | 2006-05-26 | Soitec Silicon On Insulator | Realisation d'une entite en materiau semiconducteur sur substrat |
FR2867310B1 (fr) * | 2004-03-05 | 2006-05-26 | Soitec Silicon On Insulator | Technique d'amelioration de la qualite d'une couche mince prelevee |
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- 2003-07-30 FR FR0309380A patent/FR2858461B1/fr not_active Expired - Lifetime
- 2003-10-14 US US10/686,082 patent/US7169683B2/en not_active Expired - Lifetime
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2004
- 2004-07-29 CN CNB2004800223396A patent/CN100401499C/zh not_active Expired - Lifetime
- 2004-07-29 EP EP04767815A patent/EP1649509A2/fr not_active Withdrawn
- 2004-07-29 KR KR1020067001850A patent/KR100751619B1/ko active IP Right Grant
- 2004-07-29 WO PCT/FR2004/002040 patent/WO2005013338A2/fr active Application Filing
- 2004-07-29 JP JP2006521625A patent/JP2007500436A/ja active Pending
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010507918A (ja) * | 2006-10-27 | 2010-03-11 | エス. オー. アイ. テック シリコン オン インシュレーター テクノロジーズ | 欠陥クラスタを有する基板内に形成された薄層の転写のための改善された方法 |
JP2011510507A (ja) * | 2008-01-21 | 2011-03-31 | エス オー イ テク シリコン オン インシュレータ テクノロジース | 複合構造上でエピタキシーによって成長する層の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1649509A2 (fr) | 2006-04-26 |
FR2858461A1 (fr) | 2005-02-04 |
US20050026391A1 (en) | 2005-02-03 |
CN100401499C (zh) | 2008-07-09 |
CN1833315A (zh) | 2006-09-13 |
KR20060033917A (ko) | 2006-04-20 |
KR100751619B1 (ko) | 2007-08-22 |
WO2005013338A3 (fr) | 2005-06-30 |
WO2005013338A2 (fr) | 2005-02-10 |
FR2858461B1 (fr) | 2005-11-04 |
US7169683B2 (en) | 2007-01-30 |
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