JP2009065187A - 半導体装置の作製方法 - Google Patents
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- Thin Film Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Abstract
【解決手段】
歪点750℃以上のガラス基板と水素打ち込み層を有する単結晶シリコンでなるボンドウェハとを、ガラス基板に形成された絶縁性シリコン膜とボンドウェハに形成された酸化膜とを挟むように、室温で貼り合わせた後、第1の加熱処理を行い、第1の加熱処理後、ボンドウェハの水素打ち込み層の部分で、ボンドウェハの一部を剥離することにより、ガラス基板上に単結晶シリコン薄膜を形成し、ガラス基板と単結晶シリコン薄膜とに第2の加熱処理を行い、第2の加熱処理後、単結晶シリコン薄膜をパターニングして活性層を形成し、活性層上にゲイト絶縁膜を形成し、ゲイト絶縁膜上にゲイト電極を形成する。
【選択図】図1
Description
歪点が750℃以上であるガラス基板と、
前記ガラス基板の少なくとも表面及び裏面に対して形成された絶縁性シリコン膜と、
前記絶縁性シリコン膜上に形成された単結晶シリコン薄膜をチャネル形成領域とするTFTと、
を構成に含むことを特徴とする。
歪点が750℃以上であるガラス基板と、
前記ガラス基板の外周囲を覆って形成された絶縁性シリコン膜と、
前記絶縁性シリコン膜上に形成された単結晶シリコン薄膜をチャネル形成領域とするTFTと、
を構成に含むことを特徴とする。
歪点が750℃以上であるガラス基板の全面に対して非晶質半導体薄膜を形成する工程と、
第1の加熱処理により前記非晶質半導体薄膜を酸化し、完全に熱酸化膜に変成させる工程と、
スマートカット法により前記ガラス基板の主表面側に単結晶シリコン薄膜を形成する工程と、
を含むことを特徴とする。
歪点が750℃以上であるガラス基板の全面に対して減圧熱CVD法により絶縁性シリコン膜を形成する工程と、
スマートカット法により前記ガラス基板の主表面側に単結晶シリコン薄膜を形成する工程と、
を含むことを特徴とする。
(1)基板として 750℃以上の温度に耐えうる耐熱性を有するガラス基板(歪点が 750℃以上であるガラス基板)を用いる。
(2)上記高耐熱性ガラス基板の外周面(少なくとも表面及び裏面、好ましくは全面)を絶縁性シリコン膜で保護する。
(3)絶縁性シリコン膜で包まれた上記高耐熱性ガラス基板上に、スマートカット法を用いて単結晶シリコン薄膜を形成する。
という3点が挙げられる。
03も基板101を包み込む様にして形成される。即ち、結晶化ガラス基板101は完全に絶縁性シリコン膜で包まれるので、成分物質の流出を防止することが可能となる。
Claims (4)
- 歪点750℃以上のガラス基板と水素打ち込み層を有する単結晶シリコンでなるボンドウェハとを、前記ガラス基板に形成された絶縁性シリコン膜と前記ボンドウェハに形成された酸化膜とを挟むように、室温で貼り合わせ、
前記貼り合わせ後、第1の加熱処理を行い、
前記第1の加熱処理後、前記ボンドウェハの前記水素打ち込み層の部分で、前記ボンドウェハの一部を剥離することにより、前記ガラス基板上に単結晶シリコン薄膜を形成し、
前記ガラス基板と前記単結晶シリコン薄膜とに第2の加熱処理を行い、
前記第2の加熱処理後、前記単結晶シリコン薄膜をパターニングして活性層を形成し、
前記活性層上にゲイト絶縁膜を形成し、
前記ゲイト絶縁膜上にゲイト電極を形成することを特徴とする半導体装置の作製方法。 - 請求項1において、前記酸化膜の膜厚は200〜700nmであることを特徴とする半導体装置の作製方法。
- 請求項1又は請求項2において、前記絶縁性シリコン膜は、酸化シリコン膜、窒化シリコン膜、酸化窒化シリコン膜、または塩素を含む酸化シリコン膜であることを特徴とする半導体装置の作製方法。
- 請求項1乃至請求項3のいずれか一において、前記水素打ち込み層は、ドーズ量5×1015〜1×1017ions/cm2の水素イオンを打ち込むことによって形成されることを特徴とする半導体装置の作製方法。
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JPS595672A (ja) * | 1982-07-02 | 1984-01-12 | Seiko Epson Corp | 薄膜トランジスタの製造方法 |
JPS6435959A (en) * | 1987-07-30 | 1989-02-07 | Ricoh Kk | Thin film transistor |
JPH0196960A (ja) * | 1987-10-09 | 1989-04-14 | Hitachi Ltd | 半導体装置 |
JPH03179778A (ja) * | 1989-05-08 | 1991-08-05 | Ricoh Co Ltd | 薄膜半導体形成用絶縁基板 |
JPH0555581A (ja) * | 1991-08-26 | 1993-03-05 | Semiconductor Energy Lab Co Ltd | 薄膜状半導体素子およびその作製方法 |
JPH05129609A (ja) * | 1991-09-10 | 1993-05-25 | Sharp Corp | 半導体素子及びその製造方法 |
JPH09162090A (ja) * | 1995-10-06 | 1997-06-20 | Canon Inc | 半導体基体とその製造方法 |
-
2008
- 2008-10-29 JP JP2008277835A patent/JP4489823B2/ja not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS595672A (ja) * | 1982-07-02 | 1984-01-12 | Seiko Epson Corp | 薄膜トランジスタの製造方法 |
JPS6435959A (en) * | 1987-07-30 | 1989-02-07 | Ricoh Kk | Thin film transistor |
JPH0196960A (ja) * | 1987-10-09 | 1989-04-14 | Hitachi Ltd | 半導体装置 |
JPH03179778A (ja) * | 1989-05-08 | 1991-08-05 | Ricoh Co Ltd | 薄膜半導体形成用絶縁基板 |
JPH0555581A (ja) * | 1991-08-26 | 1993-03-05 | Semiconductor Energy Lab Co Ltd | 薄膜状半導体素子およびその作製方法 |
JPH05129609A (ja) * | 1991-09-10 | 1993-05-25 | Sharp Corp | 半導体素子及びその製造方法 |
JPH09162090A (ja) * | 1995-10-06 | 1997-06-20 | Canon Inc | 半導体基体とその製造方法 |
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