KR20180098138A - 기존 토포그래피 위에 평탄화된 에칭 마스크 구조를 형성하는 방법 - Google Patents
기존 토포그래피 위에 평탄화된 에칭 마스크 구조를 형성하는 방법 Download PDFInfo
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Abstract
Description
도 2는 고화된 패터닝된 층이 그 위에 형성된, 도 1에 도시된 기판의 단순화된 도면.
도 3은 도 2의 것과 유사한 패터닝된 층의 100nm 미만 피쳐의 기계적 강성도(영 모듈러스)의 단순화된 플롯.
도 4는 피쳐 종횡비의 함수로서 100nm 미만 피쳐를 지지하는데 필요한 기계적 강성도(영 모듈러스)의 단순화된 플롯.
또한, 도 5a 내지 도 5h는 다층 레지스트 스택 내로 그리고 그후 기판 내로의 패턴 전사 시퀀스의 단순화된 도면.
또한, 도 6a 내지 도 6i는 본 발명의 일 실시예에 따른 다층 레지스트 스택 내로의 그리고 그후 기판으로의 패턴 전사 시퀀스의 단순화된 도면.
도 7은 도 6g에 도시된 것과 유사한 다층 레지스트 스택에 형성된 피쳐의 단순화된 도면.
도 8은 그 재료 조성의 함수로서 도 7의 피쳐와 유사한 피쳐의 편향 비율의 단순화된 플롯.
도 9는 상이한 다층 레지스트 스택에 형성된 피쳐의 단순화된 도면.
도 10은 그 재료 조성의 함수로서의 도 9의 피쳐의 편향의 단순화된 플롯.
Claims (13)
- 비-평면(non-planar) 표면 변화가 있는 표면을 갖는 기판을 제공하는 단계;
상기 기판 위에 제1 기저층을 부착하는 단계로서, 형성되는 상기 제1 기저층이 아래에 있는 상기 기판의 비-평면 표면 변화에 대응하는 비평면 표면 변화를 갖는, 제1 기저층을 부착하는 단계, 및
상기 제1 기저층 위에 제2 평탄화층을 부착하는 단계
에 의해, 상기 기판 상에 다층 스택을 형성하는 단계;
상기 다층 스택 상에 하드 마스크를 피착하는 단계; 및
상기 하드 마스크 상에 패터닝된 층을 형성하는 단계를 포함하고,
형성된 상기 패터닝된 층은 피쳐(features)를 갖고,
상기 다층 스택은, 50nm 이하의 피쳐 치수 및 2.5:1 이상의 종횡비를 갖는 하나 이상의 에칭된 피쳐를 최소 피쳐 압궤(collapse)로 유지하는 데 충분한 복합 유효 기계적 강성도(Eeff)를 갖는, 방법. - 제1항에 있어서, 상기 하나 이상의 에칭된 피쳐는 5:1 이상의 종횡비를 갖는, 방법.
- 제1항에 있어서, 상기 다층 스택의 하나 이상의 에칭된 피쳐의 피쳐 압궤는, 동일한 조건 하에서 전체적으로 제2 평탄화 재료로 형성된 층으로 에칭된 동일한 피쳐와 비교하여 감소되는, 방법.
- 제3항에 있어서, 제2 평탄화 재료의 에칭 내성은 상기 제1 기저층의 에칭 내성의 30 % 이내인, 방법.
- 제1항에 있어서, 상기 패터닝된 층의 피쳐는 특정 임계 치수(CD)를 가지며, 상기 다층 스택의 에칭된 피쳐는 전체적으로 제1 기저층 재료로 형성된 층으로 에칭된 동일한 피쳐와 비교하여 더 높은 임계 치수(CD) 균일성을 유지하는, 방법.
- 제1항에 있어서, 상기 다층 스택은 피쳐 압궤없이 상기 하나 이상의 에칭된 피쳐를 유지하는 데 충분한 복합 유효 기계적 강성도(Eeff)를 가지는, 방법.
- 제1항 내지 제6항 중 어느 한 항에 있어서, 상기 형성된 패터닝된 층의 피쳐를 상기 다층 스택으로 에칭하는 하나 이상의 에칭 단계를 수행하는 단계를 더 포함하는, 방법.
- 제7항에 있어서, 상기 형성된 패터닝된 층의 피쳐를 상기 기판으로 전사하기 위해 하나 이상의 추가 에칭 단계를 수행하는 단계를 더 포함하는, 방법.
- 다층 스택이며,
비-평면 표면 변화가 있는 표면을 갖는 기판;
상기 기판의 표면 위에 형성되고, 상기 기판 표면의 비-평면 표면 변화에 대응하는 비-평면 표면 변화를 갖는 제1 탄소 층; 및
상기 제1 탄소 층 위에 형성되고 평면 표면을 갖는 제2 평탄화 층을 포함하며,
다층 스택은 2.5:1 이상의 종횡비에서 50nm 이하의 피쳐를 최소 피쳐 압궤로 유지하는 데 충분한 복합 유효 기계적 강성도(Eeff)를 갖는, 다층 스택. - 제9항에 있어서, 상기 다층 스택은, 5:1 이상의 종횡비에서 50nm 이하의 피쳐를 최소 피쳐 압궤로 유지하는 데 충분한 복합 유효 기계적 강성도(Eeff)를 갖는, 다층 스택.
- 제9항에 있어서, 상기 제2 평탄화 층의 에칭 내성은 제1 탄소 층의 에칭 내성의 30 % 이내인, 다층 스택.
- 디바이스를 제조하는 방법이며,
제8항의 방법에 따라 형성된 패터닝된 층의 피쳐를 기판으로 전사하는 단계, 및
상기 기판을 처리하여 디바이스를 제조하는 단계를 포함하는, 방법. - 제12항에 있어서, 상기 기판은 반도체 웨이퍼를 더 포함하며, 제조된 상기 디바이스는 반도체 디바이스인, 방법.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/441,381 | 2017-02-24 | ||
| US15/441,381 US10079152B1 (en) | 2017-02-24 | 2017-02-24 | Method for forming planarized etch mask structures over existing topography |
Publications (2)
| Publication Number | Publication Date |
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| KR20210080218A (ko) * | 2019-12-20 | 2021-06-30 | 캐논 가부시끼가이샤 | 임프린트 시스템 내의 왜곡의 보정을 갖는 나노제조 방법 |
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| JP7336303B2 (ja) * | 2019-07-31 | 2023-08-31 | キヤノン株式会社 | 物品製造方法、膜形成方法、型製造方法、物品製造システム、情報処理方法およびプログラム |
| US11656546B2 (en) | 2020-02-27 | 2023-05-23 | Canon Kabushiki Kaisha | Exposure apparatus for uniform light intensity and methods of using the same |
| US11349061B2 (en) * | 2020-06-08 | 2022-05-31 | International Business Machines Corporation | Glassy carbon mask for immersion implant and selective laser anneal |
| US11443940B2 (en) * | 2020-06-24 | 2022-09-13 | Canon Kabushiki Kaisha | Apparatus for uniform light intensity and methods of using the same |
| US20250013153A1 (en) * | 2023-07-06 | 2025-01-09 | Tokyo Electron Limited | Method of preventing pattern collapse |
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| Publication number | Publication date |
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| JP7222606B2 (ja) | 2023-02-15 |
| JP2018142701A (ja) | 2018-09-13 |
| US10079152B1 (en) | 2018-09-18 |
| US20180247823A1 (en) | 2018-08-30 |
| KR102253295B1 (ko) | 2021-05-20 |
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