KR101903432B1 - 플라스마 처리 방법 - Google Patents
플라스마 처리 방법 Download PDFInfo
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Abstract
이러한 과제를 해결하기 위하여 본 발명은, 자성막과 금속 산화막을 적층하는 적층막에 마스크의 패턴을 형성하는 플라스마 처리 방법에 있어서, 상기 자성막을 플라스마 에칭하고, 상기 자성막의 플라스마 에칭 후, 상기 자성막이 플라스마 에칭된 처리실을 플라스마 클리닝하고, 상기 플라스마 클리닝은, 염소 원소를 함유하는 가스와 삼염화붕소 가스의 혼합 가스를 이용해서 플라스마 클리닝하는 제1 플라스마 클리닝과, 상기 제1 플라스마 클리닝 후, 상기 처리실 내에 잔류하는 붕소를 제거하는 제2 플라스마 클리닝을 포함하는 것을 특징으로 한다.
Description
도 2는 본 발명에 사용한 웨이퍼(13)의 막의 구조를 나타내는 도면.
도 3은 본 발명에 따른 플라스마 처리의 흐름도.
도 4는 자성막의 플라스마 에칭 중에 있어서의 에칭 처리실 내의 상태를 나타내는 도면.
도 5는 제1 플라스마 클리닝 중의 에칭 처리실 내의 상태를 나타내는 도면.
도 6은 제2 플라스마 클리닝 중의 에칭 처리실 내의 상태를 나타내는 도면.
1b : 제2 유도 안테나 2 : 방전부
3 : 플라스마 처리실 4 : 정합기
5 : 가스 공급 장치 6 : 전극
7 : 서셉터 8 : 플라스마
9 : 배기 장치 10 : 패러데이 실드
11 : 제1 고주파 전원 12 : 제2 고주파 전원
13 : 웨이퍼 14 : 실리콘 기판
15 : 자성막 16 : 금속 산화막
17 : 탄탈륨(Ta)막
Claims (10)
- 제1 자성막과 상기 제1 자성막의 위쪽에 배치된 금속 산화막과 상기 금속 산화막의 위쪽에 배치된 제2 자성막이 적층된 적층막에 마스크의 패턴을 형성하는 플라스마 처리 방법에 있어서,
상기 마스크를 이용해서 상기 제2 자성막을 플라스마 에칭하는 에칭 공정과,
상기 에칭 공정 후, 상기 자성막이 플라스마 에칭된 처리실을 플라스마 클리닝하는 클리닝 공정을 갖고,
상기 클리닝 공정은, 염소 가스와 삼염화붕소 가스의 혼합 가스를 이용해서 플라스마 클리닝하는 제1 플라스마 클리닝과, 상기 제1 플라스마 클리닝 후, 사불화탄소 가스와 산소 가스의 혼합 가스를 이용해서 플라스마 클리닝하는 제2 플라스마 클리닝
을 포함하는 것을 특징으로 하는 플라스마 처리 방법. - 삭제
- 제1항에 있어서,
상기 제1 자성막 및 상기 제2 자성막은, 철, 코발트, 니켈의 중 어느 하나의 원소를 함유하는 막인 것을 특징으로 하는 플라스마 처리 방법. - 제1항에 있어서,
상기 에칭 공정은, 상기 금속 산화막과 상기 제1 자성막을 더 플라스마 에칭하는 것을 특징으로 하는 플라스마 처리 방법. - 제1항에 있어서,
상기 에칭 공정은, 제1 자성막을 플라스마 에칭하지 않는 것을 특징으로 하는 플라스마 처리 방법. - 제1항에 있어서,
상기 금속 산화막은, 산화마그네슘막인 것을 특징으로 하는 플라스마 처리 방법. - 삭제
- 제1항에 있어서,
상기 마스크의 재료는, 탄탈륨막이고,
염소 가스를 이용해서 상기 제2 자성막을 플라스마 에칭하는 것을 특징으로 하는 플라스마 처리 방법. - 제8항에 있어서,
상기 적층막은, 자성막과 자성막 사이에 금속 산화막이 배치된 구조를 갖는 MTJ 소자로 되는 적층막인 것을 특징으로 하는 플라스마 처리 방법. - 제1항에 있어서,
상기 에칭 공정은, 패러데이 실드(Faraday shield)를 구비하는 유전 결합형 플라스마 에칭 장치를 이용해서 상기 제2 자성막을 플라스마 에칭하고,
상기 제2 플라스마 클리닝에 있어서의 상기 패러데이 실드에 인가되는 고주파 전압을 상기 제1 플라스마 클리닝에 있어서의 상기 패러데이 실드에 인가되는 고주파 전압보다 작게 하는 것을 특징으로 하는 플라스마 처리 방법.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016000033A JP6499980B2 (ja) | 2016-01-04 | 2016-01-04 | プラズマ処理方法 |
| JPJP-P-2016-000033 | 2016-01-04 |
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| Publication Number | Publication Date |
|---|---|
| KR20170081554A KR20170081554A (ko) | 2017-07-12 |
| KR101903432B1 true KR101903432B1 (ko) | 2018-10-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1020160098396A Active KR101903432B1 (ko) | 2016-01-04 | 2016-08-02 | 플라스마 처리 방법 |
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| Country | Link |
|---|---|
| US (1) | US9972776B2 (ko) |
| JP (1) | JP6499980B2 (ko) |
| KR (1) | KR101903432B1 (ko) |
| TW (1) | TWI642105B (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6630649B2 (ja) * | 2016-09-16 | 2020-01-15 | 株式会社日立ハイテクノロジーズ | プラズマ処理方法 |
| CN110268508B (zh) | 2017-03-27 | 2024-03-19 | 株式会社日立高新技术 | 等离子体处理方法 |
| JP7466824B2 (ja) * | 2017-06-13 | 2024-04-15 | 東京エレクトロン株式会社 | 磁気トンネル接合をパターン化する方法 |
| JP6845773B2 (ja) * | 2017-09-15 | 2021-03-24 | 株式会社日立ハイテク | プラズマ処理方法 |
| US10460988B2 (en) * | 2017-12-21 | 2019-10-29 | Tokyo Electron Limited | Removal method and processing method |
| US10522752B1 (en) | 2018-08-22 | 2019-12-31 | Taiwan Semiconductor Manufacturing Company, Ltd. | Magnetic layer for magnetic random access memory (MRAM) by moment enhancement |
| KR20250017753A (ko) | 2018-10-05 | 2025-02-04 | 램 리써치 코포레이션 | 프로세싱 챔버의 표면들로부터 금속 오염물 제거 |
| JP7300945B2 (ja) * | 2019-09-13 | 2023-06-30 | 東京エレクトロン株式会社 | クリーニング方法およびクリーニングプログラムを記録する記録媒体 |
| JPWO2021260869A1 (ko) | 2020-06-25 | 2021-12-30 | ||
| KR20220101830A (ko) * | 2021-01-12 | 2022-07-19 | 에스케이스페셜티 주식회사 | 금속산화물 반도체 물질의 증착 챔버의 세정 방법 |
| JP7329130B2 (ja) | 2021-05-27 | 2023-08-17 | 株式会社日立ハイテク | プラズマ処理装置 |
| CN115513021B (zh) * | 2021-06-07 | 2025-06-10 | 江苏鲁汶仪器股份有限公司 | 一种等离子腔体清洗组件、等离子体处理系统及清洗方法 |
| US12494347B2 (en) | 2021-06-21 | 2025-12-09 | Hitachi High-Tech Corporation | Plasma processing apparatus |
| CN113808902B (zh) * | 2021-08-20 | 2024-09-27 | 深圳天狼芯半导体有限公司 | 一种干法刻蚀设备的腔体清理方法、装置、终端和介质 |
| CN115985745B (zh) * | 2022-12-05 | 2025-06-24 | 北京北方华创微电子装备有限公司 | 半导体工艺腔室和半导体工艺设备 |
| CN119943640B (zh) * | 2025-01-24 | 2025-11-04 | 华天慧创科技(西安)有限公司 | 一种清洁刻蚀腔室的灰化-清洁方法以及一种电感耦合等离子体刻蚀方法 |
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2016
- 2016-01-04 JP JP2016000033A patent/JP6499980B2/ja active Active
- 2016-08-02 KR KR1020160098396A patent/KR101903432B1/ko active Active
- 2016-08-19 TW TW105126830A patent/TWI642105B/zh active
- 2016-09-09 US US15/260,351 patent/US9972776B2/en active Active
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| JP2006237432A (ja) * | 2005-02-28 | 2006-09-07 | Hitachi High-Technologies Corp | エッチング装置のクリーニング方法 |
| US20060245116A1 (en) * | 2005-04-29 | 2006-11-02 | Ulrich Klostermann | Memory having cap structure for magnetoresistive junction and method for structuring the same |
| US20130244344A1 (en) * | 2008-02-29 | 2013-09-19 | Roger Klas Malmhall | Method for manufacturing high density non-volatile magnetic memory |
| KR101266053B1 (ko) * | 2011-12-07 | 2013-05-21 | 가부시키가이샤 히다치 하이테크놀로지즈 | 플라즈마 처리 방법 |
| US20130146563A1 (en) | 2011-12-07 | 2013-06-13 | Hitachi High-Technologies Corporation | Plasma processing method |
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| JP2017123356A (ja) | 2017-07-13 |
| US9972776B2 (en) | 2018-05-15 |
| TWI642105B (zh) | 2018-11-21 |
| US20170194561A1 (en) | 2017-07-06 |
| TW201725624A (zh) | 2017-07-16 |
| KR20170081554A (ko) | 2017-07-12 |
| JP6499980B2 (ja) | 2019-04-10 |
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