JP2014506000A - テンプレート支援ウェハ接合のための方法およびシステム - Google Patents
テンプレート支援ウェハ接合のための方法およびシステム Download PDFInfo
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Abstract
Description
本出願は、米国特許法第119上(e)項の下、2010年12月8日に「Method and System for Template Assisted Wafer Bonding」の名称で出願された米国特許仮出願第61/420,917号の優先権を主張するものであり、ならびに、2011年5月20日に「Method and System for Template Assisted Wafer Bonding」の名称で出願された米国特許出願第13/112,142号の優先権を主張するものであり、なお、当該文献の開示は、すべての目的のためにその全体が参照により本明細書に組み入れられる。
先進的な電子機能、例えば、フォトニックデバイスのバイアス制御、変調、増幅、データシリアライゼーションおよびデシリアライゼーション、フレーミング、ルーティング、ならびに他の機能などは、通常、シリコン集積回路上に配置される。この主な理由は、市場可能コストにおいて非常に先進的な機能および性能を有するデバイスの生産を可能にするシリコン集積回路の設計および製作のためのグローバルインフラストラクチャの存在である。シリコンは、その間接的エネルギーバンドギャップのために、発光または光増幅にとって有用ではなかった。この欠点が、シリコン上にモノリシックに集積される光電子集積回路の製作を妨げてきた。
本発明により、半導体ウェハのテンプレート支援接合に関連する方法およびシステムが提供される。単なる一例として、本発明は、アセンブリ基板(テンプレートウェハとも呼ばれる)を使用して、ウェハレベルにおいてIII-V族ダイ(またはより複雑な回路のためのデバイス領域)を基板に接合する方法に適用される。当該方法および機器は、化合物半導体デバイスによる高速電子機能を集積するシリコン回路とシリコンデバイスを集積するフォトニクスのウェハスケールでの加工を含む様々な半導体加工用途に適用可能である。
Claims (26)
- シリコンベースの複数のデバイスを含むSOI基板を提供する工程;
複数のフォトニックデバイスを含む化合物半導体基板を提供する工程;
該化合物半導体基板をダイシングして複数のフォトニックダイを提供する工程であって、各ダイが該複数のフォトニックデバイスのうちの1つまたは複数を含む、工程;
アセンブリ基板を提供する工程;
該複数のフォトニックダイを、該アセンブリ基板の所定の部分に取り付ける工程;
該SOI基板と該アセンブリ基板とを位置合わせする工程;
該SOI基板と該アセンブリ基板とを連結して、複合基板構造物を形成する工程;および
該複合基板構造物から該アセンブリ基板の少なくとも一部を除去する工程
を含む、複合半導体構造物を製作する方法。 - シリコンベースの複数のデバイスが、CMOSデバイスを含む、請求項1記載の方法。
- シリコンベースの複数のデバイスが、検出器、CCD、論理回路、エミッタ結合論理回路、BiCMOS回路、NMOS回路、PMOS回路、または他のシリコンベースのデバイスもしくは回路のうちの少なくとも1つを含む、請求項1記載の方法。
- 化合物半導体基板が、III-V族ウェハを含む、請求項1記載の方法。
- 化合物半導体基板が、II-VI族ウェハを含む、請求項1記載の方法。
- 複数のフォトニックデバイスが、レーザー、検出器、または変調器のうちの少なくとも1つを含む、請求項1記載の方法。
- 複数のフォトニックデバイスが、イメージングオプティクス、磁性材料、複屈折材料、または非線形光学材料のうちの少なくとも1つをさらに含む、請求項6記載の方法。
- 化合物半導体基板が、電子デバイスをさらに含む、請求項1記載の方法。
- 電子デバイスが、HBT、HEMT、またはFETのうちの少なくとも1つを含む、請求項8記載の方法。
- アセンブリ基板を提供する工程が、
シリコン基板を酸化すること;
注入領域を形成するために、該酸化されたシリコン基板に注入を行うこと;および
前記所定の部分を形成するために、該注入済みの基板にパターン形成を行うこと
を含む、請求項1記載の方法。 - 酸化されたシリコン基板に注入を行うことが、水素またはヘリウムのうちの少なくとも一方を注入することを含む、請求項10記載の方法。
- アセンブリ基板の少なくとも一部を除去する工程が、該アセンブリ基板を注入領域において分割するために、複合基板構造物をアニール処理することを含む、請求項10記載の方法。
- アセンブリ基板の少なくとも一部を除去する工程が、該アセンブリ基板の該部分をラッピングすることを含む、請求項10記載の方法。
- 接合面を有するSOIベースウェハを提供する工程;
シードウェハを提供する工程;
該シードウェハをダイシングして複数のシードダイを提供する工程;
テンプレートウェハを提供する工程;
該複数のシードダイを該テンプレートウェハに取り付ける工程;
該テンプレートウェハを該SOIベースウェハに接合する工程であって、該複数のシードダイが、該SOIベースウェハの該接合面に連結される、工程;
該テンプレートウェハの少なくとも一部を除去する工程;
該複数のシードダイの表面の少なくとも一部を露出させる工程;および
該露出されたシードダイ上に化合物半導体構造物を成長させる工程
を含む、シリコンベースの基板上に化合物半導体構造物を成長させる方法。 - 化合物半導体構造物を成長させる工程が、エピタキシャル成長プロセスを実施することを含む、請求項14記載の方法。
- SOIベースウェハが、トランジスタに関連するドープされた領域を含む、請求項14記載の方法。
- シードウェハがIII-V族ウェハを含む、請求項14記載の方法。
- 複数のシードダイをテンプレートウェハに取り付ける工程が、該複数のシードダイを該テンプレートウェハの所定の領域に取り付けることを含む、請求項14記載の方法。
- テンプレートウェハを提供する工程が、
シリコン基板を酸化すること;
注入領域を形成するために、該酸化されたシリコン基板にドーパントを注入すること;および
所定の部分を形成するために、該注入済みの基板にパターン形成を行うこと
を含む、請求項14記載の方法。 - 注入領域が、テンプレートウェハの表面から約0.1μm〜約5μmの範囲である、請求項19記載の方法。
- テンプレートウェハの少なくとも一部を除去する工程が、
接合されたテンプレートウェハおよびSOIベースウェハをアニール処理すること;ならびに
該テンプレートウェハを注入領域において分割すること
を含む、請求項20記載の方法。 - テンプレートウェハを分割した後に、CMPプロセスを実施することをさらに含む、請求項21記載の方法。
- 化合物半導体構造物を成長させる工程の後に、ゲート金属を製作する工程またはトランジスタ相互接続を製作する工程のうちの少なくとも一方をさらに含む、請求項14記載の方法。
- 複数のシードダイの表面の少なくとも一部を露出させる工程が、テンプレートウェハの一部にパターン形成およびエッチングを行うことを含む、請求項14記載の方法。
- テンプレートウェハをSOIベースウェハに接合する工程が、半導体-半導体接合または金属支援半導体接合のうちの少なくとも一方を形成することを含む、請求項14記載の方法。
- 金属支援半導体接合がInPdを含む、請求項25記載の方法。
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