KR20180098446A - 반도체 장치 및 이의 제조 방법 - Google Patents
반도체 장치 및 이의 제조 방법 Download PDFInfo
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Abstract
Description
도 2는 도 1을 A-A' 선으로 자른 단면도이다.
도 3 내지 도 15는 도 2의 단면을 가지는 반도체 장치를 제조하는 과정을 순차적으로 나타내는 공정 단면도들이다.
도 16 내지 도 18은 본 발명의 실시예들에 따른 반도체 장치들의 단면도들이다.
3: 제 1 소오스/드레인부
5, 29, 33: 절연막
7, 9, 11: 희생 절연막
13: 갭 영역
15: 제 2 소오스/드레인부
17: 스페이서
21: 캐핑 패턴
23: 마스크 패턴
25: 게이트 절연막
26: 고유전막
27: 게이트 전극
35: 상부전극
37: 게이트 전극 콘택
39: 하부전극 콘택
Claims (10)
- 기판으로부터 돌출된 활성 기둥;
상기 활성 기둥의 상단에 배치되며 상기 활성 기둥보다 넓은 폭을 가지는 제 1 소오스/드레인부;
상기 제 1 소오스/드레인부의 적어도 하부면을 덮는 스페이서;
상기 스페이서의 하부면과 상기 활성 기둥의 측면을 덮는 게이트 전극;
상기 게이트 전극과 상기 활성 기둥 사이에 개재된 게이트 절연막; 및
상기 활성 기둥 아래의 상기 기판 내에 배치되는 제 2 소오스/드레인부를 포함하는 반도체 장치. - 제 1 항에 있어서,
상기 스페이서는 연장되어 상기 제 1 소오스/드레인부의 측면을 일부 덮는 반도체 장치. - 제 1 항에 있어서,
상기 게이트 전극은 연장되어 상기 기판의 일부를 덮으며,
상기 게이트 전극과 상기 기판 사이에 개재되는 제 1 절연막을 더 포함하며,
상기 제 1 절연막은 상기 게이트 절연막보다 두꺼운 반도체 장치. - 제 1 항에 있어서,
상기 제 1 소오스/드레인부의 상부와 전기적으로 연결되는 상부전극을 더 포함하며,
상기 상부전극은 상기 게이트 전극과 이격되는 반도체 장치. - 제 4 항에 있어서,
상기 활성 기둥과 상기 제 1 소오스/드레인부는 복수개이며,
상기 상부전극은 복수개의 상기 제 1 소오스/드레인부들과 동시에 연결되는 반도체 장치. - 제 1 항에 있어서
상기 게이트 절연막은 고유전막을 포함하며,
상기 고유전막은 연장되어 상기 스페이서와 상기 게이트 전극 사이에 개재되는 반도체 장치. - 제 1 항에 있어서,
상기 활성 기둥은 복수개이며,
상기 게이트 전극은 연장되어 상기 활성 기둥들의 측면들을 덮는 반도체 장치. - 제 1 항에 있어서,
상기 활성 기둥과 상기 제 1 소오스/드레인부는 복수개이며,
상기 활성 기둥들 사이와 상기 제 1 소오스/드레인부들 사이를 채우며 상기 상부전극의 하부면과 접하는 제 1 층간절연막; 및
상기 제 1 층간절연막을 덮으며 상기 상부전극의 측면과 접하는 제 2 층간절연막을 더 포함하는 반도체 장치. - 반도체 기판의 표면으로부터 돌출된 활성 기둥을 형성하는 단계;
상기 활성 기둥 아래의 상기 반도체 기판에 제 1 소오스/드레인부를 형성하는 단계;
상기 반도체 기판 상에 제 1 절연막을 형성하여 상기 활성 기둥을 덮는 단계;
상기 제 1 절연막에 대하여 에치백 공정을 진행하여 상기 활성 기둥의 상부를 노출시키는 단계;
상기 노출된 상기 활성 기둥의 상부에 상기 활성 기둥보다 넓은 폭을 가지되 상기 제 1 절연막과 이격된 제 2 소오스/드레인부를 형성하는 단계;
상기 제 2 소오스/드레인부의 측벽과 하부면을 덮는 스페이서를 형성하는 단계;
상기 제 1 절연막을 제거하여 상기 스페이서의 하부면과 상기 활성 기둥의 측벽을 노출시키는 단계; 및
상기 스페이서의 하부면과 상기 활성 기둥의 측벽을 덮는 게이트 전극을 형성하는 단계를 포함하는 반도체 장치의 제조 방법. - 제 9 항에 있어서,
상기 제 2 소오스/드레인부를 형성하는 단계는,
상기 노출된 활성 기둥의 상부와 상기 제 1 절연막의 상부면을 콘포말하게 덮는 제 2 절연막을 형성하는 단계;
상기 제 3 절연막을 형성하여 상기 활성 기둥의 측면의 상기 제 2 절연막을 덮되, 상기 활성 기둥 상의 상기 제 2 절연막을 노출시키는 단계;
이방성 식각 공정을 진행하여 상기 제 3 절연막과 상기 활성 기둥 사이의 상기 제 2 절연막을 제거하여 상기 활성기둥의 상부면과 상부 측벽을 노출시키되, 상기 제 1 절연막의 상부면과 접하는 상기 제 2 절연막을 남기는 단계; 및
선택적 에피택시얼 성장 공정을 진행하고 불순물을 도핑하여 상기 노출된 활성 기둥을 상기 제 2 소오스/드레인부로 만드는 단계를 포함하는 반도체 장치의 제조 방법.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170024948A KR102773973B1 (ko) | 2017-02-24 | 2017-02-24 | 반도체 장치 및 이의 제조 방법 |
| US15/664,226 US10256324B2 (en) | 2017-02-24 | 2017-07-31 | Semiconductor devices having vertical transistors with aligned gate electrodes |
| CN201810156564.2A CN108511526B (zh) | 2017-02-24 | 2018-02-24 | 有带对准栅电极的垂直晶体管的半导体器件及其制造方法 |
| US16/284,843 US10559673B2 (en) | 2017-02-24 | 2019-02-25 | Semiconductor devices having vertical transistors with aligned gate electrodes |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020170024948A KR102773973B1 (ko) | 2017-02-24 | 2017-02-24 | 반도체 장치 및 이의 제조 방법 |
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| Publication Number | Publication Date |
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| KR20180098446A true KR20180098446A (ko) | 2018-09-04 |
| KR102773973B1 KR102773973B1 (ko) | 2025-03-05 |
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| US (2) | US10256324B2 (ko) |
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| CN (1) | CN108511526B (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210043414A (ko) * | 2019-10-11 | 2021-04-21 | 삼성전자주식회사 | 수직 전계 효과 트랜지스터 장치 및 수직 전계 효과 트랜지스터 장치의 형성방법 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3622559A1 (en) * | 2017-05-12 | 2020-03-18 | C2amps AB | A vertical metal oxide semiconductor field effect transistor (mosfet) and a method of forming the same |
| US10199278B2 (en) * | 2017-05-30 | 2019-02-05 | International Business Machines Corporation | Vertical field effect transistor (FET) with controllable gate length |
| EP3454378A1 (en) * | 2017-09-08 | 2019-03-13 | IMEC vzw | A method for forming a vertical channel device, and a vertical channel device |
| US10297507B2 (en) * | 2017-10-17 | 2019-05-21 | International Business Machines Corporation | Self-aligned vertical field-effect transistor with epitaxially grown bottom and top source drain regions |
| US10672887B2 (en) * | 2017-12-12 | 2020-06-02 | International Business Machines Corporation | Vertical FET with shaped spacer to reduce parasitic capacitance |
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| US20190189778A1 (en) | 2019-06-20 |
| US20180248018A1 (en) | 2018-08-30 |
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| US10256324B2 (en) | 2019-04-09 |
| CN108511526B (zh) | 2024-01-02 |
| CN108511526A (zh) | 2018-09-07 |
| KR102773973B1 (ko) | 2025-03-05 |
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