JP4863882B2 - 膜のエッチング選択比の変更方法 - Google Patents
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- JP4863882B2 JP4863882B2 JP2006547391A JP2006547391A JP4863882B2 JP 4863882 B2 JP4863882 B2 JP 4863882B2 JP 2006547391 A JP2006547391 A JP 2006547391A JP 2006547391 A JP2006547391 A JP 2006547391A JP 4863882 B2 JP4863882 B2 JP 4863882B2
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Description
CMOS集積回路の性能は劇的に改善され得る。図2A乃至2Pは、伝統的なプレーナ型デバイスを有するCMOS集積回路を形成するためのゲート置換方法を例示しているが、同一の技術が、図1Eに示されるような非プレーナ型デバイスすなわち3ゲートデバイスを有するCMOS集積回路を形成するために用いられ得る。
Claims (3)
- 集積回路の製造方法であって:
半導体基板の第1チャネル領域上に犠牲ゲート誘電層及び第1犠牲ゲート電極を形成し、かつ前記半導体基板の第2チャネル領域上に犠牲ゲート誘電層及び第2犠牲ゲート電極を形成する工程;
前記第1犠牲ゲート電極はエッチャントでエッチングされ、かつ前記第2犠牲ゲート電極は前記第1犠牲ゲート電極をエッチングするエッチャントでエッチングされないように、前記第2犠牲ゲート電極に結晶格子の原子より小さいドーパント原子を注入し、アニールすることによって、前記第2犠牲ゲート電極を変化させる工程;
前記第1犠牲ゲート電極を覆うように、かつ前記第2犠牲ゲート電極を覆うように誘電層を形成する工程;
前記第1犠牲ゲート電極及び前記第2犠牲ゲート電極の頂部表面を露出するように前記誘電層を平坦化する工程;
前記誘電層を平坦化する工程の直後に、第1の開口を形成して前記半導体基板の前記第1チャネル領域を露出するように、前記第2犠牲ゲート電極をエッチングすることなく前記第1犠牲ゲート電極を前記第1犠牲ゲート電極をエッチングするエッチャントでエッチングし、次に犠牲ゲート誘電層を犠牲ゲート誘電層をエッチングするエッチャントでエッチングする工程;
前記誘電層上及び前記第1の開口内にゲート誘電層を堆積し、次に第1金属膜を堆積する工程;
第1金属ゲート電極を形成するように、前記誘電層の頂部から前記第1金属膜及び前記ゲート誘電層を除去する工程;
第2の開口を形成して前記半導体基板の前記第2チャネル領域を露出するように、前記第2犠牲ゲート電極を前記第1犠牲ゲート電極をエッチングするエッチャントとは異なるエッチャントでエッチングし、次に犠牲ゲート誘電層を犠牲ゲート誘電層をエッチングするエッチャントでエッチングする工程;
前記誘電層上及び前記第2の開口内にゲート誘電層を堆積し、次に前記第1金属膜とは異なる第2金属膜を堆積する工程;及び
第2金属ゲート電極を形成するように、前記誘電層の頂部から前記第2金属膜及び前記ゲート誘電層を除去する工程;
を有する製造方法。 - 請求項1に記載の製造方法であって、前記第1金属膜が3.9eVと4.2eVとの間の仕事関数を有するところの製造方法。
- 請求項1に記載の製造方法であって、前記第2金属膜が4.9eVから5.2eVの間の仕事関数を有するところの製造方法。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/750,045 US7247578B2 (en) | 2003-12-30 | 2003-12-30 | Method of varying etch selectivities of a film |
| US10/750,045 | 2003-12-30 | ||
| PCT/US2004/043393 WO2005067020A2 (en) | 2003-12-30 | 2004-12-23 | A method of varying etch selectivities of a film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2007517406A JP2007517406A (ja) | 2007-06-28 |
| JP4863882B2 true JP4863882B2 (ja) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006547391A Expired - Fee Related JP4863882B2 (ja) | 2003-12-30 | 2004-12-23 | 膜のエッチング選択比の変更方法 |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US7247578B2 (ja) |
| EP (1) | EP1702356A2 (ja) |
| JP (1) | JP4863882B2 (ja) |
| KR (1) | KR100838853B1 (ja) |
| CN (1) | CN1902739A (ja) |
| TW (1) | TWI247351B (ja) |
| WO (1) | WO2005067020A2 (ja) |
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-
2003
- 2003-12-30 US US10/750,045 patent/US7247578B2/en not_active Expired - Fee Related
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2004
- 2004-08-19 TW TW093124988A patent/TWI247351B/zh not_active IP Right Cessation
- 2004-12-23 WO PCT/US2004/043393 patent/WO2005067020A2/en not_active Ceased
- 2004-12-23 EP EP04815466A patent/EP1702356A2/en not_active Withdrawn
- 2004-12-23 KR KR1020067013061A patent/KR100838853B1/ko not_active Expired - Fee Related
- 2004-12-23 CN CNA2004800395316A patent/CN1902739A/zh active Pending
- 2004-12-23 JP JP2006547391A patent/JP4863882B2/ja not_active Expired - Fee Related
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2007
- 2007-04-19 US US11/788,799 patent/US20070197042A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN1902739A (zh) | 2007-01-24 |
| EP1702356A2 (en) | 2006-09-20 |
| TWI247351B (en) | 2006-01-11 |
| WO2005067020A3 (en) | 2005-12-15 |
| US20050148131A1 (en) | 2005-07-07 |
| JP2007517406A (ja) | 2007-06-28 |
| KR20060105871A (ko) | 2006-10-11 |
| US20070197042A1 (en) | 2007-08-23 |
| WO2005067020A2 (en) | 2005-07-21 |
| TW200522181A (en) | 2005-07-01 |
| KR100838853B1 (ko) | 2008-06-16 |
| US7247578B2 (en) | 2007-07-24 |
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