KR101437961B1 - 반도체장치 - Google Patents
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- KR101437961B1 KR101437961B1 KR1020130089423A KR20130089423A KR101437961B1 KR 101437961 B1 KR101437961 B1 KR 101437961B1 KR 1020130089423 A KR1020130089423 A KR 1020130089423A KR 20130089423 A KR20130089423 A KR 20130089423A KR 101437961 B1 KR101437961 B1 KR 101437961B1
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- H10D64/661—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation
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- H10D84/101—Integrated devices comprising main components and built-in components, e.g. IGBT having built-in freewheel diode
- H10D84/141—VDMOS having built-in components
- H10D84/143—VDMOS having built-in components the built-in components being PN junction diodes
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L2224/06—Structure, shape, material or disposition of the bonding areas prior to the connecting process of a plurality of bonding areas
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- H10D62/83—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge
- H10D62/832—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge being Group IV materials comprising two or more elements, e.g. SiGe
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Abstract
Description
도 2는 실시형태 1에 관한 반도체 칩의 MOSFET 셀부 및 게이트 패드 영역의 단면도다.
도 3은 HTGB 마이너스 시험 시간과 MOSFET의 임계전압의 변화량의 관계를 도시한 도면이다.
도 4는 Ti의 배리어 메탈층의 두께와 MOSFET의 임계전압의 변화량의 관계를 도시한 도면이다.
도 5는 TiN의 배리어 메탈층의 두께와 MOSFET의 임계전압의 변화량의 관계를 도시한 도면이다.
도 6은 실시형태 2에 관한 반도체장치를 구비한 반도체 칩의 평면도다.
도 7은 실시형태 2에 관한 반도체장치의 전류 센스 셀부의 단면도다.
도 8은 Ti의 배리어 메탈층의 두께와 MOSFET의 임계전압의 변화량의 관계를 도시한 도면이다.
도 9는 TiSi의 배리어 메탈층의 두께와 MOSFET의 임계전압의 변화량의 관계를 도시한 도면이다.
도 10은 실시형태 5에 관한 반도체 칩의 MOSFET 셀부 및 게이트 패드 영역의 단면도다.
도 11은 HTGB 마이너스 시험 시간과 MOSFET의 임계전압의 변화량의 관계를 도시한 도면이다.
도 12는 실시형태 6에 관한 반도체 칩의 MOSFET 셀부 및 게이트 패드 영역의 단면도다.
도 13은 HTGB 마이너스 시험 시간과 MOSFET의 임계전압의 변화량의 관계를 도시한 도면이다.
도 14는 실시형태 7에 관한 반도체장치를 구비한 반도체 칩의 평면도다.
도 15는 실시형태 7에 관한 반도체장치의 온도 센스 다이오드부의 단면도다.
Claims (10)
- 탄화 규소 반도체인 반도체층 위에 배치된 게이트 절연막, 상기 게이트 절연막 위에 형성된 게이트 전극 및 상기 반도체층의 상부에 형성된 불순물 영역인 소스 영역을 포함하는 주 트랜지스터 셀과,
상기 게이트 전극 위를 덮는 층간 절연막과,
상기 소스 영역에 접속하는 동시에 상기 층간 절연막 위에 연장되는 소스 전극과,
상기 게이트 전극에 접속하는 게이트 패드와,
상기 소스 전극과 상기 층간 절연막의 사이, 및 상기 게이트 패드와 상기 게이트 전극의 사이의 각각에 개재하는 배리어 메탈층을 구비하고,
상기 배리어 메탈층은, 주위 온도가 125℃에서 상기 게이트 전극과 상기 소스 전극 사이에 -20V의 전압을 인가하고 시험 시간이 240시간의 HTGB(High Temperature Gate Bias) 시험에 있어서, 상기 게이트 전극과 상기 소스 전극 사이의 게이트-소스간 임계 전압의 변동량을 2V 이하로 억제하는 것을 특징으로 하는 반도체장치.
- 제 1항에 있어서,
상기 주 트랜지스터 셀과 공통의 게이트 전극 및 상기 주 트랜지스터 셀과는 별개의 소스 전극을 갖는 전류 센스 셀을 더 구비하고,
상기 배리어 메탈층은, 상기 전류 센스 셀의 소스 전극과 상기 층간 절연막 사이에도 배치되어 있는 반도체장치.
- 제 1항에 있어서,
상기 반도체층 위에 배치된 p형 폴리실리콘 및 n형 폴리실리콘으로 이루어진 온도 센스 다이오드와,
상기 p형 폴리실리콘에 접속하는 애노드 전극과,
상기 n형 폴리실리콘에 접속하는 캐소드 전극을 더 구비하고,
상기 배리어 메탈층은, 상기 p형 폴리실리콘과 상기 애노드 전극의 사이 및 상기 n형 폴리실리콘과 상기 캐소드 전극의 사이에도 배치되어 있는 반도체장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,
상기 배리어 메탈층은, 두께 40nm 이상의 Ti층인 반도체장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,
상기 배리어 메탈층은, 두께 90nm 이상의 TiN층인 반도체장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,
상기 배리어 메탈층은, 두께 130nm 이상의 TiSi층인 반도체장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,
상기 배리어 메탈층은, TiSi층 및 Ti층으로 이루어진 2층 구조인 반도체장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,
상기 배리어 메탈층은, TiN층 및 Ti층으로 이루어진 2층 구조인 반도체장치.
- 제 3항에 있어서,
상기 배리어 메탈층은, TiSi층, TiN층, TiSi층과 Ti층의 2층 구조, 및 TiN층과 Ti층의 2층 구조 중 어느 한개인 반도체장치.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,
상기 소스 영역에 있어서 상기 소스 전극과의 접속 부분에 형성된, 상기 반도체층과 금속의 화합물층을 더 구비한 반도체장치.
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Application Number | Priority Date | Filing Date | Title |
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JP2010262120 | 2010-11-25 | ||
JPJP-P-2010-262120 | 2010-11-25 | ||
JPJP-P-2011-232666 | 2011-10-24 | ||
JP2011232666A JP5694119B2 (ja) | 2010-11-25 | 2011-10-24 | 炭化珪素半導体装置 |
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KR1020110118734A Division KR101319469B1 (ko) | 2010-11-25 | 2011-11-15 | 반도체장치 |
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KR1020140086563A Division KR101642753B1 (ko) | 2010-11-25 | 2014-07-10 | 반도체장치 |
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KR20130098951A KR20130098951A (ko) | 2013-09-05 |
KR101437961B1 true KR101437961B1 (ko) | 2014-09-11 |
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KR1020110118734A Expired - Fee Related KR101319469B1 (ko) | 2010-11-25 | 2011-11-15 | 반도체장치 |
KR1020130089423A Expired - Fee Related KR101437961B1 (ko) | 2010-11-25 | 2013-07-29 | 반도체장치 |
KR1020140086563A Expired - Fee Related KR101642753B1 (ko) | 2010-11-25 | 2014-07-10 | 반도체장치 |
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US (2) | US9041007B2 (ko) |
JP (1) | JP5694119B2 (ko) |
KR (3) | KR101319469B1 (ko) |
CN (3) | CN104064591B (ko) |
DE (1) | DE102011086943B4 (ko) |
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KR20120056770A (ko) | 2012-06-04 |
US9842906B2 (en) | 2017-12-12 |
CN102610639A (zh) | 2012-07-25 |
KR20140095044A (ko) | 2014-07-31 |
DE102011086943B4 (de) | 2020-09-10 |
US9041007B2 (en) | 2015-05-26 |
JP5694119B2 (ja) | 2015-04-01 |
CN104064591A (zh) | 2014-09-24 |
US20150243753A1 (en) | 2015-08-27 |
CN104064591B (zh) | 2017-11-17 |
US20120132912A1 (en) | 2012-05-31 |
DE102011086943A1 (de) | 2012-05-31 |
KR101319469B1 (ko) | 2013-10-17 |
CN102610639B (zh) | 2016-05-04 |
CN105702717A (zh) | 2016-06-22 |
KR20130098951A (ko) | 2013-09-05 |
KR101642753B1 (ko) | 2016-07-26 |
JP2012129503A (ja) | 2012-07-05 |
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