KR102633398B1 - 반도체 소자를 위한 딥 트렌치 마스크 레이아웃 설계 방법 - Google Patents
반도체 소자를 위한 딥 트렌치 마스크 레이아웃 설계 방법 Download PDFInfo
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Abstract
Description
도 2a는 본 발명의 일 실시 예에 따른 각진 코너를 갖는 DTI 마스크 레이아웃이다.
도 2b는 상기 도 2a에 대한 트렌치 식각 후의 SEM 이미지이다.
도 2c는 본 발명의 일 실시 예에 따른 DTI 마스크 레이아웃이다.
도 2d는 상기 도 2c에 대한 트렌치 식각 후의 SEM 이미지이다.
도 2e는 본 발명의 일 실시 예에 따른 OPC를 적용한 전체 DTI 마스크 레이아웃이다.
도 3a는 본 발명의 실시 예에 따른 게이트 전극과 활성 영역을 포함한 반도체 소자의 마스크 레이아웃이다.
도 3b는 본 발명의 실시 예에 따른 반도체 소자의 DTI 마스크 레이아웃을 포함한 반도체 소자의 마스크 레이아웃이다.
도 3c는 본 발명의 실시 예에 따른 광학 근접 보정 (Optical Proximity Correction, OPC) 적용 후 반도체 소자의 마스크 레이아웃이다.
도 3d는 본 발명의 실시 예에 따른 갭-필 절연막이 충진된 형태의 반도체 소자의 마스크 레이아웃이다.
도 4는 본 발명의 실시 예에 따른 반도체 소자를 형성하기 위한 DTI 마스크 레이아웃이다.
도 5a 내지 도 5h는 본 발명의 실시 예에 따른 반도체 소자의 레이아웃을 이용한 반도체 소자 제조 공정을 나타낸 도면이다.
도 6은 본 발명의 다른 실시 예에 따른 깊은 트렌치 영역이 형성된 반도체 소자를 도시한 도면이다.
300: CMOS
102: 기판 104: 웨이퍼
190: 게이트 전극
400: 깊은 트렌치
410: 측벽 절연막 420: 갭-필 절연막
411: 내곽 코너 412: 외곽 코너
500: DTI 마스크 레이아웃
510: 제1 영역 520: 제2 영역
530: 제3 영역
540: 제1 PR 패턴 540: 제2 PR 패턴
560: 오프닝 영역
600: 반도체 소자의 마스크 레이아웃
Claims (14)
- 기판에 형성된 제1 활성 영역;
상기 제1 활성 영역을 둘러싸는 비활성 영역;
상기 비활성 영역을 둘러싸는 제2 활성 영역;
상기 제1 활성 영역과 상기 비활성 영역 사이에 형성되는 제1 경계면;
상기 제2 활성 영역과 상기 비활성 영역 사이에 형성되는 제2 경계면;
상기 제1 경계면에 형성되는 제1 코너;
상기 제1 코너와 인접하여 형성되고, 상기 제2 경계면에 형성되는 제2 코너;
상기 비활성 영역에 형성된 깊은 트렌치 구조; 및
상기 깊은 트렌치 구조에 형성된 갭-필 절연막을 포함하며,
상기 제2 코너는 상기 제1 코너보다 더 긴 사선을 가지고 있는 반도체 소자. - 제 1 항에 있어서,
상기 제1 코너와 상기 제2 코너 사이의 대각선 거리는 상기 트렌치 구조의 폭에 비해 50-150% 인 것을 특징으로 하는 반도체 소자. - 제1항에 있어서,
상기 제1 코너와 상기 제2 코너는 서로 평행한 것을 특징으로 하는 반도체 소자. - 삭제
- 제 1항에 있어서,
상기 제1 활성 영역은
바디 영역 및, 드리프트 영역;
상기 드리프트 영역에 형성된 드레인 영역;
상기 바디 영역에 형성된 소스 영역; 및
상기 드레인 영역과 상기 소스 영역 사이에 형성된 게이트 전극을 포함하고,
상기 드레인 영역과 상기 게이트 전극 사이에 얕은 깊이의 분리막이 형성되는 것을 특징으로 하는 반도체 소자. - 제 1항에 있어서,
상기 제2 코너의 각도는 45도인 것을 특징으로 하는 반도체 소자. - 제 1항에 있어서,
광학 근접 보정(Optical Proximity Correction: OPC) 프로세스를 이용하여 상기 제2 코너를 사선 방향으로 형성하는 반도체 소자. - 삭제
- 삭제
- 기판에 형성된 제1 활성 영역;
상기 제1 활성 영역을 둘러싸는 비활성 영역;
상기 비활성 영역을 둘러싸는 제2 활성 영역;
상기 제1 활성 영역과 상기 비활성 영역 사이에 형성되는 제1 경계면;
상기 제2 활성 영역과 상기 비활성 영역 사이에 형성되는 제2 경계면;
상기 제1 경계면에 형성되는 제1 코너;
상기 제1 코너와 인접하여 형성되고, 상기 제2 경계면에 형성되는 제2 코너;
상기 제1 활성 영역에 형성된 게이트 전극;
상기 비활성 영역에 형성된 깊은 트렌치 구조; 및
상기 깊은 트렌치 구조에 형성된 갭-필 절연막을 포함하며,
상기 제2 코너는 상기 제1 코너보다 더 긴 사선을 가지고 있는 반도체 소자의 마스크 레이아웃. - 제 10항에 있어서,
상기 제1 코너보다 더 긴 사선을 가지고 있는 상기 제2 코너를 갖도록 하기 위해 광학 근접 보정(Optical Proximity Correction: OPC)를 적용하는 반도체 소자의 마스크 레이아웃. - 제 11항에 있어서,
상기 OPC를 적용하기 전에는 DTI 마스크 레이아웃의 상기 제2 코너가 직각의 각진 코너를 가진 것을 특징으로 하는 반도체 소자의 마스크 레이아웃. - 제10항에 있어서,
상기 게이트 전극의 외곽 코너의 사선 방향과 상기 제2 코너의 사선 방향이 서로 평행한 것을 특징으로 하는 반도체 소자의 마스크 레이아웃. - 제10항에 있어서,
상기 반도체 소자는 Bipolar-CMOS-DMOS (BCD) 소자인 것을 특징으로 하는 반도체 소자의 마스크 레이아웃.
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