KR20160079599A - 피처 개구를 갖는 반도체 장치 구조체를 형성하기 위한 방법 - Google Patents
피처 개구를 갖는 반도체 장치 구조체를 형성하기 위한 방법 Download PDFInfo
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Abstract
Description
도 1a 내지 1g는 일부 실시예에 따라, 반도체 장치 구조체를 형성하기 위한 프로세스의 다양한 스테이지(stage)들의 개략적 단면도이다.
도 2a 내지 2e는 일부 실시예에 따라, 반도체 장치 구조체를 형성하기 위한 프로세스의 다양한 스테이지들의 개략적 단면도이다.
도 3a 내지 3f는 일부 실시예에 따라, 반도체 장치 구조체를 형성하기 위한 프로세스의 다양한 스테이지들의 개략적 단면도이다.
도 4는 일부 실시예에 따라, 반도체 장치 구조체를 형성하기 위한 방법을 예증하는 흐름도이다.
Claims (10)
- 반도체 장치 구조체를 형성하기 위한 방법에 있어서,
반도체 기판 위에 유전층을 형성하는 단계;
상기 유전층 위에 하드 마스크층을 형성하는 단계;
상기 마스크층을 에칭하도록 플라즈마 에칭 프로세스를 수행하여 개구를 형성하는 단계;
상기 하드 마스크층 내의 상기 개구를 통해 상기 유전층을 에칭하여 상기 유전층 내에 피처 개구(feature opening)를 형성하는 단계; 및
상기 피처 개구 내에 전도성 물질을 형성하는 단계를
포함하고,
상기 플라즈마 에칭 프로세스에서 사용되는 기체 혼합물은 질소 함유 기체, 할로겐 함유 기체, 및 탄소 함유 기체를 포함하고, 상기 기체 혼합물은 20% 내지 30% 범위의 상기 질소 함유 기체의 체적 농도를 가지며, 상기 기체 혼합물 내의 상기 할로겐 함유 기체에 대한 상기 탄소 함유 기체의 체적 농도비는 0.3인 것인, 반도체 장치 구조체 형성 방법. - 제1항에 있어서, 상기 질소 함유 기체는 질소 기체이고, 상기 할로겐 함유 기체는 염소 기체를 포함하며, 상기 탄소 함유 기체는 메탄 기체를 포함하는 것인, 반도체 장치 구조체 형성 방법.
- 제1항에 있어서, 상기 하드 마스크층은 금속 물질을 포함하는 것인, 반도체 장치 구조체 형성 방법.
- 제1항에 있어서, 상기 하드 마스크층은 티타늄 질화물로 제조되는 것인, 반도체 장치 구조체 형성 방법.
- 제1항에 있어서, 상기 전도성 물질이 형성되기 전에, 상기 피처 개구의 하단 부분으로부터 연장되는 비아 홀을 형성하도록 상기 유전층을 부분적으로 제거하는 단계를 더 포함하는, 반도체 장치 구조체 형성 방법.
- 제1항에 있어서, 상기 피처 개구가 형성되기 전에, 그리고 상기 개구가 상기 하드 마스크층 내에 형성된 후에 상기 유전층 내에 비아 홀을 형성하는 단계를 더 포함하는, 반도체 장치 구조체 형성 방법.
- 제1항에 있어서, 상기 전도성 물질이 형성된 후에 상기 하드 마스크층을 제거하는 단계를 더 포함하는, 반도체 장치 구조체 형성 방법.
- 제1항에 있어서, 상기 개구 또는 상기 피처 개구 중 적어도 하나의 측벽과 하단 부분 사이의 각도는 89도 내지 91도 범위 내에 있는 것인, 반도체 장치 구조체 형성 방법.
- 반도체 장치 구조체를 형성하기 위한 방법에 있어서,
반도체 기판 위에 유전층을 형성하는 단계;
상기 유전층 위에 하드 마스크층을 형성하는 단계;
상기 하드 마스크층 위에 마스크층을 형성하는 단계;
포토레지시트층을 사용함으로써 상기 마스크층을 패터닝하는 단계;
상기 포토레지스트층을 제거하는 단계;
상기 포토레지스트층이 제거된 후에, 상기 하드 마스크층을 에칭하도록 플라즈마 에칭 프로세스를 수행하여 개구를 형성하는 단계;
상기 하드 마스크층 내의 상기 개구를 통해 상기 유전층을 에칭하여 상기 유전층 내에 피처 개구를 형성하는 단계; 및
상기 피처 개구 내에 전도성 물질을 형성하는 단계를
포함하고,
상기 플라즈마 에칭 프로세스에서 사용되는 기체 혼합물은 질소 함유 기체, 할로겐 함유 기체, 및 탄소 함유 기체를 포함하고, 상기 기체 혼합물은 20% 내지 30% 범위의 상기 질소 함유 기체의 체적 농도를 가지고, 상기 기체 혼합물 내의 상기 할로겐 함유 기체에 대한 상기 탄소 함유 기체의 체적 농도비는 0.3이며, 상기 하드 마스크층이 상기 개구를 형성하도록 에칭되는 동안 상기 패터닝된 마스크층이 에칭 마스크로서 사용되는 것인, 반도체 장치 구조체 형성 방법. - 반도체 장치 구조체를 형성하기 위한 방법에 있어서,
반도체 기판 위에 유전층을 형성하는 단계;
상기 유전층 위에 하드 마스크층을 형성하는 단계;
상기 하드 마스크층 위에 마스크층을 형성하는 단계;
포토레지시트층을 사용함으로써 상기 마스크층을 패터닝하는 단계;
상기 포토레지스트층을 제거하는 단계;
상기 포토레지스트층이 제거된 후에, 상기 하드 마스크층을 에칭하도록 플라즈마 에칭 프로세스를 수행하여 수직 측벽을 갖는 개구를 형성하는 단계;
상기 하드 마스크층 내의 상기 개구를 통해 상기 유전층을 에칭하여 상기 유전층 내에 피처 개구(feature opening)를 형성하는 단계; 및
상기 피처 개구 내에 전도성 물질을 형성하는 단계를
포함하고,
상기 플라즈마 에칭 프로세스에서 사용되는 기체 혼합물은 질소 함유 기체, 할로겐 함유 기체, 및 탄소 함유 기체를 포함하고, 상기 기체 혼합물은 20% 내지 30% 범위의 상기 질소 함유 기체의 체적 농도를 가지고, 상기 기체 혼합물 내의 상기 할로겐 함유 기체에 대한 상기 탄소 함유 기체의 체적 농도비는 0.3이며, 상기 하드 마스크층이 상기 개구를 형성하도록 에칭되는 동안 상기 패터닝된 마스크층이 에칭 마스크로서 사용되는 것인, 반도체 장치 구조체 형성 방법.
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US14/583,238 US9425094B2 (en) | 2014-12-26 | 2014-12-26 | Mechanisms for forming semiconductor device structure with feature opening |
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US10510598B2 (en) | 2016-11-29 | 2019-12-17 | Taiwan Semiconductor Manufacturing Company, Ltd. | Self-aligned spacers and method forming same |
US10181420B2 (en) * | 2017-02-06 | 2019-01-15 | Globalfoundries Inc. | Devices with chamfer-less vias multi-patterning and methods for forming chamfer-less vias |
US11101429B2 (en) * | 2018-09-28 | 2021-08-24 | Taiwan Semiconductor Manufacturing Company, Ltd. | Metal etching stop layer in magnetic tunnel junction memory cells |
US11101175B2 (en) * | 2018-11-21 | 2021-08-24 | International Business Machines Corporation | Tall trenches for via chamferless and self forming barrier |
CN113161284B (zh) * | 2020-01-07 | 2025-03-14 | 台积电(南京)有限公司 | 用于制造互连结构的方法 |
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US20060134921A1 (en) * | 2003-05-01 | 2006-06-22 | Chih-Ning Wu | Plasma etching process |
US20050079703A1 (en) * | 2003-10-09 | 2005-04-14 | Applied Materials, Inc. | Method for planarizing an interconnect structure |
US20070093069A1 (en) * | 2005-10-21 | 2007-04-26 | Chien-Hua Tsai | Purge process after dry etching |
US7973409B2 (en) * | 2007-01-22 | 2011-07-05 | International Business Machines Corporation | Hybrid interconnect structure for performance improvement and reliability enhancement |
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US11348800B2 (en) | 2019-03-15 | 2022-05-31 | Taiwan Semiconductor Manufacturing Company, Ltd. | Ultra narrow trench patterning with dry plasma etching |
US11894237B2 (en) | 2019-03-15 | 2024-02-06 | Taiwan Semiconductor Manufacturing Company, Ltd. | Ultra narrow trench patterning with dry plasma etching |
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US10002790B2 (en) | 2018-06-19 |
US20160190006A1 (en) | 2016-06-30 |
CN105742233A (zh) | 2016-07-06 |
KR101752539B1 (ko) | 2017-06-29 |
TW201624613A (zh) | 2016-07-01 |
CN105742233B (zh) | 2019-04-26 |
TWI588935B (zh) | 2017-06-21 |
US20160358819A1 (en) | 2016-12-08 |
US9425094B2 (en) | 2016-08-23 |
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