KR100985085B1 - 반도체 장치와 그 제조 방법 - Google Patents
반도체 장치와 그 제조 방법 Download PDFInfo
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- KR100985085B1 KR100985085B1 KR1020087012980A KR20087012980A KR100985085B1 KR 100985085 B1 KR100985085 B1 KR 100985085B1 KR 1020087012980 A KR1020087012980 A KR 1020087012980A KR 20087012980 A KR20087012980 A KR 20087012980A KR 100985085 B1 KR100985085 B1 KR 100985085B1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B53/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—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
- 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
- H01L27/105—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 including field-effect components
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B53/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors
- H10B53/30—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors characterised by the memory core region
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Semiconductor Memories (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
결함수 | |
비교예 | 49 |
본 실시예 | 6 |
Claims (20)
- 반도체 기판과,상기 반도체 기판 위에 형성된 하지(下地) 절연막과,상기 하지 절연막 위에, 하부 전극, 강유전체 재료로 이루어지는 커패시터 유전체막 및 상부 전극을 차례로 형성하여 이루어지는 커패시터와,상기 커패시터를 덮는 층간 절연막과,상기 층간 절연막 위에 형성된 제 1 배선과,상기 층간 절연막과 상기 제 1 배선을 덮고, 상기 제 1 배선의 상방에서 제 1 막두께를 갖는 단층의 제 1 절연막과,상기 제 1 절연막 위에 형성된 제 1 커패시터 보호 절연막과,상기 제 1 커패시터 보호 절연막 위에 형성되고, 상기 제 1 배선의 상방에서 상기 제 1 막두께보다도 두꺼운 제 2 막두께를 갖는 제 1 커버 절연막과,상기 제 1 배선 위의 상기 제 1 커버 절연막, 상기 제 1 커패시터 보호 절연막 및 상기 제 1 절연막에 형성된 제 1 홀과,상기 제 1 홀 내에 형성되고, 상기 제 1 배선과 전기적으로 접속된 제 1 도전성 플러그와,상기 제 1 커버 절연막 위에 형성되고, 상기 제 1 도전성 플러그와 전기적으로 접속된 제 2 배선을 갖는 것을 특징으로 하는 반도체 장치.
- 제 1 항에 있어서,상기 제 1 절연막의 상면은 평탄화되어 있는 것을 특징으로 하는 반도체 장치.
- 제 1 항에 있어서,상기 제 2 배선과 상기 제 1 커버 절연막 위에 형성되고, 그 제 2 배선 위에서 제 3 막두께를 갖는 단층의 제 2 절연막과,상기 제 2 절연막 위에 형성된 제 2 커패시터 보호 절연막과,상기 제 2 커패시터 보호 절연막 위에 형성되고, 상기 제 2 배선의 상방에서 상기 제 3 막두께보다도 두꺼운 제 4 막두께를 갖는 제 2 커버 절연막과,상기 제 2 배선 위의 상기 제 2 커버 절연막, 상기 제 2 커패시터 보호 절연막 및 상기 제 2 절연막에 형성된 제 2 홀과,상기 제 2 홀 내에 형성되고, 상기 제 2 배선과 전기적으로 접속된 제 2 도전성 플러그와,상기 제 2 커버 절연막 위에 형성되고, 상기 제 2 도전성 플러그와 전기적으로 접속된 제 3 배선을 갖는 것을 특징으로 하는 반도체 장치.
- 제 1 항에 있어서,상기 층간 절연막과 상기 제 1 배선 각각의 위에 제 3 커패시터 보호 절연막이 형성되고, 그 제 3 커패시터 보호 절연막 위에 상기 제 1 절연막이 형성된 것을 특징으로 하는 반도체 장치.
- 반도체 기판 위에 하지 절연막을 형성하는 공정과,상기 하지 절연막 위에, 하부 전극, 강유전체 재료로 이루어지는 커패시터 유전체막 및 상부 전극을 차례로 적층하여 이루어지는 커패시터를 형성하는 공정과,상기 커패시터를 덮는 층간 절연막을 형성하는 공정과,상기 층간 절연막 위에 제 1 배선을 형성하는 공정과,상기 층간 절연막과 상기 제 1 배선을 덮고, 상기 제 1 배선의 상방에서 제 1 막두께를 갖는 단층의 제 1 절연막을 형성하는 공정과,상기 제 1 절연막 위에 제 1 커패시터 보호 절연막을 형성하는 공정과,상기 제 1 커패시터 보호 절연막 위에, 상기 제 1 배선의 상방에서 상기 제 1 막두께보다도 두꺼운 제 2 막두께를 갖는 제 1 커버 절연막을 형성하는 공정과,상기 제 1 배선 위의 상기 제 1 커버 절연막, 상기 제 1 커패시터 보호 절연막 및 상기 제 1 절연막에 제 1 홀을 형성하는 공정과,상기 제 1 홀 내에, 상기 제 1 배선과 전기적으로 접속된 제 1 도전성 플러그를 형성하는 공정과,상기 제 1 커버 절연막 위에, 상기 제 1 도전성 플러그와 전기적으로 접속된 제 2 배선을 형성하는 공정을 갖는 것을 특징으로 하는 반도체 장치의 제조 방법.
- 제 5 항에 있어서,상기 제 1 절연막을 형성하는 공정 후에,상기 제 1 절연막의 상면을 연마하여 평탄화하는 공정과,상기 평탄화 후에, 상기 제 1 절연막의 상면을 에치백하는 공정을 갖는 것을 특징으로 하는 반도체 장치의 제조 방법.
- 제 6 항에 있어서,상기 제 1 절연막을 에치백하는 공정에서, 상기 평탄화시에 상기 제 1 절연막의 상면에 형성된 흠집보다도 깊게 상기 제 1 절연막을 에치백하는 것을 특징으로 하는 반도체 장치의 제조 방법.
- 제 6 항에 있어서,상기 에치백으로서, 스퍼터 에치, 건식 에치 및 습식 에치 중 어느 하나를 채용하는 것을 특징으로 하는 반도체 장치의 제조 방법.
- 제 5 항에 있어서,상기 제 1 커패시터 보호 절연막으로서, 알루미나막, 산화 티탄막, 질화 실리콘막 및 산질화 실리콘막 중 어느 하나의 단층막 또는 이들 막의 적층막을 형성하는 것을 특징으로 하는 반도체 장치의 제조 방법.
- 제 5 항에 있어서,상기 제 1 도전성 플러그를 형성하는 공정은, 상기 제 1 홀 내와 상기 제 1 커버 절연막 위에 플러그용 도전막을 형성하는 공정과, 상기 제 1 커버 절연막 위의 상기 플러그용 도전막을 연마하여 제거하고, 상기 플러그용 도전막을 상기 제 1 홀 내에 상기 제 1 도전성 플러그로서 남기는 공정을 갖는 것을 특징으로 하는 반도체 장치의 제조 방법.
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WO2002056382A1 (fr) | 2001-01-15 | 2002-07-18 | Matsushita Electric Industrial Co., Ltd. | Dispositif semiconducteur et procede de fabrication dudit dispositif |
JP2004349474A (ja) | 2003-05-22 | 2004-12-09 | Toshiba Corp | 半導体装置とその製造方法 |
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