KR102372892B1 - 집적회로 소자의 제조 방법 - Google Patents
집적회로 소자의 제조 방법 Download PDFInfo
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- KR102372892B1 KR102372892B1 KR1020170101714A KR20170101714A KR102372892B1 KR 102372892 B1 KR102372892 B1 KR 102372892B1 KR 1020170101714 A KR1020170101714 A KR 1020170101714A KR 20170101714 A KR20170101714 A KR 20170101714A KR 102372892 B1 KR102372892 B1 KR 102372892B1
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Abstract
Description
도 2a 내지 도 2f는 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 제조 방법을 설명하기 위하여 공정 순서에 따라 도시한 단면도들이다.
도 3a 내지 도 3r은 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 제조 방법을 설명하기 위하여 공정 순서에 따라 도시한 단면도들이다.
도 4a는 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 제조 방법을 이용하여 제조될 수 있는 예시적인 집적회로 소자의 회로도이다.
도 4b는 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 제조 방법을 이용하여 제조될 수 있는 예시적인 집적회로 소자의 주요 구성들의 평면도이다.
Claims (10)
- 기판 상에 탄소 함유막 및 실리콘 함유 유기 반사방지막을 포함하는 마스크 적층 구조를 형성하는 단계와,
상기 실리콘 함유 유기 반사방지막을 식각하여 실리콘 함유 유기 반사방지 패턴을 형성하는 단계와,
상기 실리콘 함유 유기 반사방지 패턴을 식각 마스크로 이용하여 상기 탄소 함유막을 식각하여 탄소 함유 마스크 패턴과 상기 탄소 함유 마스크 패턴의 측벽을 덮는 프로파일 제어 라이너와의 결합 구조로 이루어지는 복합 마스크 패턴을 형성하는 단계와,
상기 복합 마스크 패턴에 의해 한정되는 복수의 공간을 통해 상기 기판에 불순물 이온을 주입하는 단계를 포함하는 집적회로 소자의 제조 방법. - 제1항에 있어서,
상기 실리콘 함유 유기 반사방지 패턴을 형성하는 단계에서는 CxFyHz 함유 가스 (x 및 y는 각각 1 내지 10의 정수이고, z는 0 이상의 정수)를 이용하여 상기 실리콘 함유 유기 반사방지막을 플라즈마 식각하는 집적회로 소자의 제조 방법. - 제1항에 있어서,
상기 복합 마스크 패턴을 형성하는 단계는 황 함유 가스를 포함하는 식각 가스를 이용하여 상기 탄소 함유막을 플라즈마 식각하는 단계를 포함하고,
상기 프로파일 제어 라이너는 황을 포함하는 집적회로 소자의 제조 방법. - 제3항에 있어서,
상기 황 함유 가스는 COS, CS2, SO2, 또는 이들의 조합으로 이루어지는 집적회로 소자의 제조 방법. - 제3항에 있어서,
상기 식각 가스는 O2 가스를 더 포함하고,
상기 탄소 함유막을 플라즈마 식각하는 동안 상기 황 함유 가스는 제1 유량으로 공급되고 O2 가스는 상기 제1 유량과 같거나 더 큰 제2 유량으로 공급되는 집적회로 소자의 제조 방법. - 제1항에 있어서,
상기 불순물 이온을 주입하는 단계 후,
H2SO4를 포함하는 제1 식각액을 이용하여 상기 실리콘 함유 유기 반사방지 패턴을 제거하는 단계와,
상기 제1 식각액과는 다른 조성을 가지는 제2 식각액을 이용하여 상기 복합 마스크 패턴을 제거하는 단계를 더 포함하는 집적회로 소자의 제조 방법. - 기판에 복수의 활성 영역을 정의하는 단계와,
상기 복수의 활성 영역 위에 탄소 함유막 및 실리콘 함유 유기 반사방지막을 포함하는 마스크 적층 구조를 형성하는 단계와,
상기 실리콘 함유 유기 반사방지막을 식각하여 실리콘 함유 유기 반사방지 패턴을 형성하는 단계와,
상기 실리콘 함유 유기 반사방지 패턴을 식각 마스크로 이용하여 상기 탄소 함유막을 식각하여 탄소 함유 마스크 패턴과 상기 탄소 함유 마스크 패턴의 측벽을 덮는 프로파일 제어 라이너와의 결합 구조로 이루어지는 복합 마스크 패턴을 형성하는 단계와,
상기 복합 마스크 패턴을 이온주입 마스크로 이용하여 상기 복수의 활성 영역 중 일부의 활성 영역에 불순물 이온을 주입하는 단계와,
상기 실리콘 함유 유기 반사방지 패턴 및 상기 복합 마스크 패턴을 제거하는 단계를 포함하는 집적회로 소자의 제조 방법. - 제7항에 있어서,
상기 실리콘 함유 유기 반사방지 패턴을 형성하는 단계 및 상기 복합 마스크 패턴을 형성하는 단계에서는 각각 플라즈마를 이용하는 건식 식각 공정을 이용하고,
상기 실리콘 함유 유기 반사방지 패턴 및 상기 복합 마스크 패턴을 제거하는 단계에서는 각각 습식 식각 공정을 이용하는 집적회로 소자의 제조 방법. - 제7항에 있어서,
상기 복합 마스크 패턴을 형성하는 단계는 황 함유 가스를 포함하는 식각 가스를 이용하여 상기 탄소 함유막을 플라즈마 식각하는 단계를 포함하고,
상기 프로파일 제어 라이너는 상기 황 함유 가스로부터 유래되는 황을 포함하는 집적회로 소자의 제조 방법. - 기판의 일부를 식각하여 제1 수평 방향으로 상호 평행하게 연장되는 복수의 핀형 활성 영역을 형성하는 단계와,
상기 복수의 핀형 활성 영역 각각의 사이의 공간들을 채우는 절연막을 형성하는 단계와,
상기 절연막 및 상기 복수의 핀형 활성 영역 위에 탄소 함유막 및 실리콘 함유 유기 반사방지막을 포함하는 마스크 적층 구조를 형성하는 단계와,
상기 실리콘 함유 유기 반사방지막을 식각하여 실리콘 함유 유기 반사방지 패턴을 형성하는 단계와,
상기 실리콘 함유 유기 반사방지 패턴을 식각 마스크로 이용하여 상기 탄소 함유막을 식각하여 탄소 함유 마스크 패턴과 상기 탄소 함유 마스크 패턴의 측벽을 덮는 프로파일 제어 라이너와의 결합 구조로 이루어지는 복합 마스크 패턴을 형성하는 단계와,
상기 복합 마스크 패턴을 이온주입 마스크로 이용하여 상기 복수의 핀형 활성 영역 중 일부의 핀형 활성 영역에 불순물 이온을 주입하여 상기 복수의 핀형 활성 영역에 각각 웰(well)을 형성하는 단계를 포함하는 집적회로 소자의 제조 방법.
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