KR100718903B1 - 반도체 기억 장치 및 그 제조 방법 - Google Patents
반도체 기억 장치 및 그 제조 방법 Download PDFInfo
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- KR100718903B1 KR100718903B1 KR1020057003251A KR20057003251A KR100718903B1 KR 100718903 B1 KR100718903 B1 KR 100718903B1 KR 1020057003251 A KR1020057003251 A KR 1020057003251A KR 20057003251 A KR20057003251 A KR 20057003251A KR 100718903 B1 KR100718903 B1 KR 100718903B1
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- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
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- H01L21/8232—Field-effect technology
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- H01L21/823425—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the source or drain structures, e.g. specific source or drain implants or silicided source or drain structures or raised source or drain structures manufacturing common source or drain regions between a plurality of conductor-insulator-semiconductor structures
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- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823468—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate sidewall spacers, e.g. double spacers, particular spacer material or shape
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- H01L29/76—Unipolar devices, e.g. field effect transistors
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Abstract
Description
Claims (26)
- 반도체 기판과,상기 반도체 기판 상에 형성된 게이트 절연막과,상기 게이트 절연막 상에 패턴 형성되어 이루어지는 게이트 전극과,상기 게이트 전극의 양측에 있어서의 상기 반도체 기판의 표면층에 형성된 소스/드레인 확산층과,상기 게이트 전극의 측면에 형성된 한 쌍의 측벽막을 포함하며,상기 소스/드레인 확산층 중 소스 확산층은 상기 게이트 전극에 정합되어 형성됨과 동시에,드레인 확산층은 상기 소스 확산층에 비하여 낮은 불순물 농도로 상기 게이트 전극에 정합되어 형성되는 저농도 불순물 영역과 상기 저농도 불순물 영역에 비하여 높은 불순물 농도로 상기 측벽막에 정합되어 형성되는 고농도 불순물 영역을 갖는 것을 특징으로 하는 반도체 기억 장치.
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- 반도체 기판과,상기 반도체 기판 상에 형성된 제1 게이트 절연막과,상기 제1 게이트 절연막 상에 섬 형상으로 패턴 형성되어 전하를 축적하는 부유 게이트와,상기 부유 게이트 상에 형성된 제2 게이트 절연막과,상기 제2 게이트 절연막 상에 패턴 형성되어 이루어지는 제어 게이트와,상기 제어 게이트의 양측에 있어서의 상기 반도체 기판의 표면층에 형성된 소스/드레인 확산층과,상기 제어 게이트의 측면에 형성된 한 쌍의 측벽막을 포함하며,상기 소스/드레인 확산층 중 소스 확산층은 상기 제어 게이트에 정합되어 형성됨과 동시에,드레인 확산층은 상기 소스 확산층에 비하여 낮은 불순물 농도로 상기 제어 게이트에 정합되어 형성되는 저농도 불순물 영역과 상기 저농도 불순물 영역에 비하여 높은 불순물 농도로 상기 측벽막에 정합되어 형성되는 고농도 불순물 영역을 갖는 것을 특징으로 하는 반도체 기억 장치.
- 제1항 또는 제5항에 있어서, 상기 고농도 불순물 영역에 콘택트 홀 형성 부위를 마련하는 것을 특징으로 하는 반도체 기억 장치.
- 제1항 또는 제5항에 있어서, 상기 소스 확산층 위를 상기 측벽막이 덮고 있는 것을 특징으로 하는 반도체 기억 장치.
- 삭제
- 반도체 기판 상에 게이트 절연막을 통하여 게이트 전극을 패턴 형성하는 공정과,상기 게이트 전극의 일측에 있어서의 상기 반도체 기판의 표면층에 불순물을 도입하여 소스 확산층을 형성하는 공정과,상기 게이트 전극의 타측에 있어서의 상기 반도체 기판의 표면층에 상기 일측에 비하여 낮은 농도로 불순물을 도입하여 저농도 불순물 영역을 형성하는 공정과,상기 게이트 전극의 측면에 한 쌍의 측벽막을 형성하는 공정과,상기 게이트 전극 및 상기 측벽막의 상기 타측에 있어서의 상기 반도체 기판의 표면층에 고농도로 불순물을 도입하여 상기 저농도 불순물 영역과 일부 중첩되는 고농도 불순물 영역을 형성하여 상기 저농도 불순물 영역 및 상기 고농도 불순물 영역으로 이루어지는 드레인 확산층을 형성하는 공정을 포함하는 것을 특징으로 하는 반도체 기억 장치의 제조 방법.
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- 반도체 기판 상에 제1 게이트 절연막을 통하여 전하를 축적하는 섬 형상의 부유 게이트를 패턴 형성하는 공정과,상기 부유 게이트 상에 제2 게이트 절연막을 통하여 제어 게이트를 패턴 형성하는 공정과,상기 제어 게이트의 일측에 있어서의 상기 반도체 기판의 표면층에 불순물을 도입하여 소스 확산층을 형성하는 공정과,상기 제어 게이트의 타측에 있어서의 상기 반도체 기판의 표면층에 상기 일측에 비하여 낮은 농도로 불순물을 도입하여 저농도 불순물 영역을 형성하는 공정과,상기 제어 게이트의 측면에 한 쌍의 측벽막을 형성하는 공정과,상기 제어 게이트 및 상기 측벽막의 상기 타측에 있어서의 상기 반도체 기판의 표면층에 고농도로 불순물을 도입하여 상기 저농도 불순물 영역과 일부 중첩되는 고농도 불순물 영역을 형성하여 상기 저농도 불순물 영역 및 상기 고농도 불순물 영역으로 이루어지는 드레인 확산층을 형성하는 공정을 포함하는 것을 특징으로 하는 반도체 기억 장치의 제조 방법.
- 제9항 또는 제16항에 있어서, 상기 고농도 불순물 영역은 주변 회로 영역의 불순물 확산층과 동시에 형성되는 것을 특징으로 하는 반도체 기억 장치의 제조 방법.
- 삭제
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- 제1항 또는 제5항에 있어서, 상기 고농도 불순물 영역은 상기 저농도 불순물 영역보다도 상기 반도체 기판의 표면으로부터 깊게 형성되는 것을 특징으로 하는 반도체 기억 장치.
- 제1항 또는 제5항에 있어서, 상기 드레인 확산층은 비트선에 접속되는 것을 특징으로 하는 반도체 기억 장치.
- 제9항 또는 제16항에 있어서, 상기 고농도 불순물 영역은 상기 저농도 불순물 영역보다도 상기 반도체 기판의 표면으로부터 깊게 형성되는 것을 특징으로 하는 반도체 기억 장치의 제조 방법.
- 제9항 또는 제16항에 있어서,상기 소스 확산층 및 상기 드레인 확산층에는 각각 소스 콘택트, 드레인 콘택트가 형성되고,상기 드레인 확산층의 고농도 불순물 영역은, 소스 콘택트 홀의 형성 개소를 덮는 마스크를 형성하고, 이 마스크를 이용하여 불순물 이온 주입을 행하는 것에 의해 형성되는 것을 특징으로 하는, 반도체 기억 장치의 제조 방법.
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Application Number | Priority Date | Filing Date | Title |
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JP2002256120A JP5179692B2 (ja) | 2002-08-30 | 2002-08-30 | 半導体記憶装置及びその製造方法 |
JPJP-P-2002-00256120 | 2002-08-30 |
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KR20050075332A KR20050075332A (ko) | 2005-07-20 |
KR100718903B1 true KR100718903B1 (ko) | 2007-05-17 |
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US (3) | US7202540B2 (ko) |
EP (1) | EP1548831A4 (ko) |
JP (1) | JP5179692B2 (ko) |
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CN (1) | CN100373622C (ko) |
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KR20050075332A (ko) | 2005-07-20 |
US20070117303A1 (en) | 2007-05-24 |
US7759745B2 (en) | 2010-07-20 |
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JP5179692B2 (ja) | 2013-04-10 |
EP1548831A8 (en) | 2005-10-12 |
TWI289929B (en) | 2007-11-11 |
EP1548831A1 (en) | 2005-06-29 |
US20050230714A1 (en) | 2005-10-20 |
CN100373622C (zh) | 2008-03-05 |
JP2004095910A (ja) | 2004-03-25 |
WO2004021441A1 (ja) | 2004-03-11 |
US20070114617A1 (en) | 2007-05-24 |
TW200405408A (en) | 2004-04-01 |
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US7482226B2 (en) | 2009-01-27 |
US7202540B2 (en) | 2007-04-10 |
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