JP2007234719A - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP2007234719A JP2007234719A JP2006051818A JP2006051818A JP2007234719A JP 2007234719 A JP2007234719 A JP 2007234719A JP 2006051818 A JP2006051818 A JP 2006051818A JP 2006051818 A JP2006051818 A JP 2006051818A JP 2007234719 A JP2007234719 A JP 2007234719A
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- gas
- film
- insulating film
- interlayer insulating
- liquid separation
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Abstract
【解決手段】この半導体装置は、シリコン基板1上に形成された層間絶縁膜2と、層間絶縁膜2の表面の少なくとも一部上に形成され、液体を透過しにくいとともに、気体を透過しやすいSiOC膜からなる気液分離膜3および5と、層間絶縁膜2の表面の少なくとも一部上に形成された配線層7とを備えている。
【選択図】図2
Description
図1は、本発明の第1実施形態による半導体装置の構造を示した平面図である。図2および図3は、ぞれぞれ、図1の100−100線および200−200線に沿った断面図である。まず、図1〜図3を参照して、第1実施形態による半導体装置の構造について説明する。
図11は、本発明の第2実施形態による半導体装置の構造を示した平面図である。図12および図13は、それぞれ、図11の500−500線および600−600線に沿った断面図である。図11〜図13を参照して、この第2実施形態では、上記第1実施形態と異なり、デュアルダマシンの配線構造を有する半導体装置について説明する。
図23は、本発明の第3実施形態による半導体装置の構造を示した断面図である。図23を参照して、この第3実施形態では、図2に示した第1実施形態の構造において、層間絶縁膜2の上面上に、気液分離膜3に代えて、SiO2膜33が形成されている。また、SiO2膜33の厚みは、ウェットプロセスに用いる薬液が、SiO2膜33を透過して層間絶縁膜2に達するのを抑制することが可能な厚みに設定されている。なお、第3実施形態のその他の構造は、上記第1実施形態と同様である。
図24は、本発明の第4実施形態による半導体装置の構造を示した断面図である。図24を参照して、この第4実施形態では、図12に示した第2実施形態の構造において、層間絶縁膜22および25の上面上に、気液分離膜23および26に代えて、それぞれ、SiO2膜43および46が形成されている。また、SiO2膜43の厚みは、約15nmに設定されているとともに、SiO2膜46の厚みは、ウェットプロセスに用いる薬液が、SiO2膜46を透過して層間絶縁膜25に達するのを抑制することが可能な厚みに設定されている。なお、第4実施形態のその他の構造は、上記第2実施形態と同様である。
図25は、本発明の第5実施形態による半導体装置の構造を示した断面図である。図25を参照して、この第5実施形態では、図2に示した第1実施形態の構造において、トレンチ溝4の内側面上に、気液分離膜5に代えて、SiO2膜55が形成されている。また、SiO2膜55の厚みは、ウェットプロセスに用いる薬液が、SiO2膜55を透過して層間絶縁膜2に達するのを抑制することが可能な厚みに設定されている。なお、第5実施形態のその他の構造は、上記第1実施形態と同様である。
図26は、本発明の第6実施形態による半導体装置の構造を示した断面図である。図26を参照して、この第6実施形態では、図12に示した第2実施形態の構造において、ビアホール24およびトレンチ溝27の内側面上に、気液分離膜28に代えて、SiO2膜68が形成されている。また、SiO2膜68の厚みは、ウェットプロセスに用いる薬液が、SiO2膜68を透過して層間絶縁膜22および25に達するのを抑制することが可能な厚みに設定されている。なお、第6実施形態のその他の構造は、上記第2実施形態と同様である。
2、22、25 層間絶縁膜(絶縁膜)
3、5、23、26、28 気液分離膜
4、27 トレンチ溝(開口部)
7、30 配線層
24 ビアホール(開口部)
Claims (7)
- 基板上に形成された絶縁膜と、
前記絶縁膜の表面の少なくとも一部上に形成され、液体を透過しにくいとともに、気体を透過しやすい材料からなる気液分離膜とを備えた、半導体装置。 - 前記絶縁膜の表面の少なくとも一部上に形成された配線層をさらに備えた、請求項1に記載の半導体装置。
- 前記絶縁膜は、前記基板の表面の一部と導通させるための開口部を有し、
前記気液分離膜は、前記絶縁膜の開口部の内面および前記絶縁膜の前記基板とは反対側の上面の少なくとも一方の面上に形成されており、
前記配線層は、前記絶縁膜の開口部の内側に形成されている、請求項2に記載の半導体装置。 - 前記気液分離膜は、前記絶縁膜の開口部の内面および前記絶縁膜の前記基板とは反対側の上面の両方の面上に形成されている、請求項3に記載の半導体装置。
- 前記気液分離膜は、SiOCからなる気液分離膜を含む、請求項1〜4のいずれか1項に記載の半導体装置。
- 前記絶縁膜は、多孔質の絶縁膜を含む、請求項1〜5のいずれか1項に記載の半導体装置。
- 基板上に、絶縁膜を形成する工程と、
前記絶縁膜の表面の少なくとも一部上に、液体を透過しにくいとともに、気体を透過しやすい材料からなる気液分離膜を形成する工程と、
前記絶縁膜の表面の少なくとも一部上に、配線層をめっき処理により形成する工程と、
所定のガス雰囲気中においてアニールすることにより、前記絶縁膜の劣化を回復する工程とを備えた、半導体装置の製造方法。
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JP2006051818A JP2007234719A (ja) | 2006-02-28 | 2006-02-28 | 半導体装置およびその製造方法 |
CN2007100842207A CN101030561B (zh) | 2006-02-28 | 2007-02-27 | 半导体装置及其制造方法 |
US11/711,764 US8022497B2 (en) | 2006-02-28 | 2007-02-28 | Semiconductor device comprising insulating film |
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WO2007132879A1 (ja) * | 2006-05-17 | 2007-11-22 | Nec Corporation | 半導体装置、半導体装置の製造方法及び半導体製造装置 |
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