KR102814849B1 - 반도체 소자 - Google Patents
반도체 소자 Download PDFInfo
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- KR102814849B1 KR102814849B1 KR1020190070028A KR20190070028A KR102814849B1 KR 102814849 B1 KR102814849 B1 KR 102814849B1 KR 1020190070028 A KR1020190070028 A KR 1020190070028A KR 20190070028 A KR20190070028 A KR 20190070028A KR 102814849 B1 KR102814849 B1 KR 102814849B1
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- Insulated Gate Type Field-Effect Transistor (AREA)
- Thin Film Transistor (AREA)
Abstract
Description
도 2a 내지 도 2c는 각각 도 1의 A-A'선, B-B'선 및 C-C'선에 따른 단면도들이다.
도 3은 본 발명의 실시예들에 따른 반도체 소자를 설명하기 위한 확대 단면도로 도 2a의 AA 부분에 대응된다.
도 4 및 도 5는 본 발명의 실시예들에 따른 반도체 소자를 설명하기 위한 확대 단면도들로 도 2a의 AA 부분에 대응된다.
도 6 내지 도 8b는 본 발명의 실시예들에 따른 반도체 소자를 설명하기 위한 단면도들로 도 1의 C-C'선에 대응된다.
도 9, 도 11, 도 13, 도 18 및 도 20은 본 발명의 실시예들에 따른 반도체 소자의 제조 방법을 설명하기 위한 평면도들이다.
도 10a, 도 12a, 도 14a, 16a 및 도 21a는 각각 도 9, 도 11, 도 13, 도 18 및 도 20의 A-A'선에 따른 단면도들이다.
도 10b, 도 12b, 도 14b, 도 19b 및 도 21b는 각각 도 9, 도 11, 도 13, 도 18 및 도 20의 B-B'선에 따른 단면도들이다.
도 14c, 도 19c 및 21c는 각각 도 13, 도 18 및 도 20의 C-C'선에 따른 단면도들이다.
도 15 내지 도 17는 본 발명의 실시예들에 따른 소스/드레인 패턴의 형성 방법을 나타내는 단면도들로, 도 13의 A-A'선에 대응된다.
Claims (10)
- 기판 상의 절연막;
상기 절연막 상에 수직적으로 서로 이격되어 적층된 채널 반도체 패턴들;
상기 채널 반도체 패턴들을 가로지르는 게이트 전극;
상기 게이트 전극의 양측에 각각 배치되고, 상기 채널 반도체 패턴들에 의해 연결되는 소스/드레인 영역들; 및
상기 절연막과 상기 소스/드레인 영역들의 하면 사이의 에어갭들(air gaps)을 포함하고,
상기 소스/드레인 영역들의 상기 하면은, 상기 에어갭들에 의해 상기 소스/드레인 영역들의 내측을 향하여 오목하게 들어가는 형상을 가지는 반도체 소자. - 제1 항에 있어서,
상기 에어갭의 최상부는 상기 채널 반도체 패턴들 중 상기 절연막에 가장 인접한 채널 반도체 패턴의 하면보다 낮은 레벨에 위치하는 반도체 소자. - 제1 항에 있어서,
상기 에어갭의 최하부는 상기 절연막의 최상부 표면보다 낮은 레벨에 위치하는 반도체 소자. - 제1 항에 있어서,
상기 소스/드레인 영역들은 제1 방향으로 서로 이격되고,
상기 소스/드레인 영역들의 각각은 상기 제1 방향으로 서로 이격된 한 쌍의 제1 반도체 패턴들을 포함하되,
상기 제1 반도체 패턴들은 상부에 비해 제1 방향으로 더 큰 폭을 갖는 하부를 갖는 반도체 소자. - 제1 항에 있어서,
상기 소스/드레인 영역들은 제1 방향으로 서로 이격되고,
상기 소스/드레인 영역들의 각각은 상기 제1 방향으로 서로 이격된 한 쌍의 제1 반도체 패턴들 및 상기 한 쌍의 제1 반도체 패턴들 상에 형성되어 상기 제1 반도체 패턴들을 연결하는 제2 반도체 패턴을 포함하는 반도체 소자. - 제5 항에 있어서,
상기 채널 반도체 패턴들은 제1 반도체 원소를 포함하고, 상기 제1 반도체 패턴들 및 상기 제2 반도체 패턴의 각각은 상기 제1 반도체 원소의 격자 상수보다 큰 격자 상수를 갖는 제2 반도체 원소를 포함하되,
상기 제2 반도체 패턴은 상기 제1 반도체 패턴에 비하여 높은 제2 반도체 원소의 농도를 갖는 반도체 소자. - 제5 항에 있어서,
상기 에어갭의 최상부는 상기 제2 반도체 패턴의 하면에 의해 정의되는 반도체 소자. - 제1 항에 있어서,
상기 채널 반도체 패턴들은 제1 반도체 원소를 포함하고, 상기 소스/드레인 영역들은 상기 제1 반도체 원소 및 상기 제1 반도체 원소의 격자 상수보다 큰 격자 상수를 갖는 제2 반도체 원소를 포함하되,
상기 소스/드레인 영역들은 상기 절연막에 가까워질수록 낮은 제2 반도체 원소의 농도를 갖는 반도체 소자. - 기판 상의 절연막;
상기 절연막 상의 제1 수직레벨에 위치한 제1 채널 반도체 패턴;
상기 제1 채널 반도체 패턴 상에 적층되어, 상기 제1 수직레벨보다 높은 제2 수직레벨에 위치한 제2 채널 반도체 패턴;
상기 제1 및 제2 채널 반도체 패턴들을 가로지르는 게이트 전극, 상기 게이트 전극은 제1 방향으로 연장되고;
상기 게이트 전극의 측면 상에 배치되어 상기 제1 및 제2 채널 반도체 패턴들과 연결된 소스/드레인 영역을 포함하되,
상기 소스/드레인 영역은:
상기 제1 방향에 수직인 제2 방향으로 서로 이격된 한 쌍의 제1 반도체 패턴들; 및
상기 한 쌍의 제1 반도체 패턴들 상에 형성되어 상기 제1 반도체 패턴들을 연결하는 제2 반도체 패턴을 포함하고,
상기 제1 반도체 패턴들은 상기 제1 및 제2 반도체 패턴들의 측면을 덮고,
상기 제1 수직레벨에서의 상기 제1 반도체 패턴의 폭은 상기 제2 수직레벨에서의 상기 제1 반도체 패턴의 폭에 비해 큰 반도체 소자. - 기판 상의 절연막;
상기 절연막 상에 제1 방향으로 서로 이격된 제1 및 제2 채널 스택들, 상기 제1 및 제2 채널 스택들의 각각은 수직적으로 서로 이격되어 적층된 채널 반도체 패턴들을 포함하고; 및
상기 제1 및 제2 채널 영역들 사이의 소스/드레인 영역을 포함하되,
상기 소스/드레인 영역은 상기 채널 영역들의 측면들을 덮고 상기 제1 방향으로 서로 이격된 한 쌍의 제1 반도체 패턴들 및 상기 제1 반도체 패턴들 상에 배치되어 상기 한 쌍의 제1 패턴들을 연결하는 제2 반도체 패턴들을 포함하는 반도체 소자.
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| Publication number | Publication date |
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| CN112086515B (zh) | 2025-12-05 |
| US20200395445A1 (en) | 2020-12-17 |
| US20220115500A1 (en) | 2022-04-14 |
| CN112086515A (zh) | 2020-12-15 |
| US11211457B2 (en) | 2021-12-28 |
| KR20200142765A (ko) | 2020-12-23 |
| US11710772B2 (en) | 2023-07-25 |
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