KR102367379B1 - 표면 음향파 디바이스를 위한 하이브리드 구조체 - Google Patents
표면 음향파 디바이스를 위한 하이브리드 구조체 Download PDFInfo
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Abstract
하이브리드 구조체(100)는,
· 유용층(10)과 지지 기판(20) 사이에 개재된 트래핑층(30),
· 유용층(10)과 트래핑층(30) 사이의 결정된 조도(roughness)의 적어도 하나의 기능 계면(31)을 포함한다.
Description
· 도 1 내지 도 3은 본 발명에 따른 하이브리드 구조체를 나타낸다;
· 도 4는 본 발명에 따른 표면 음향파 디바이스를 나타낸다;
· 도 5a 내지 도 5e, 도 6a 내지 도 6e 및 도 7a 내지 도 7e는 본 발명에 따른 하이브리드 구조체의 제조 방법을 나타낸다.
Claims (18)
- 자유로운 제1면(1), 및 유용층(10)의 열 팽창 계수보다 그 열 팽창 계수가 더 낮은 지지 기판(20) 상에 배치된 제2면(2)을 갖는 압전 재료의 상기 유용층(10)을 포함하는 표면 음향파 디바이스용 하이브리드 구조체(100)로서,
상기 하이브리드 구조체(100)는:
상기 유용층(10)과 상기 지지 기판(20) 사이에 개재된 트래핑층(30);
상기 유용층(10)과 상기 트래핑층(30) 사이에서, 0.3 마이크론보다 큰 피크-대-밸리(peak-to-valley) 진폭을 갖는 결정된 조도(roughness)의 기능 계면(31)으로서, 상기 기능 계면(31)은 상기 유용층(10)의 상기 제2면(2) 상에 배치된 제1 중간층(40)과 상기 트래핑층(30) 사이의 계면에 의해 형성되고, 상기 트래핑층(30)은 상기 결정된 조도를 갖는, 기능 계면(31);
제2 기능 계면(32)으로서, 상기 제2 기능 계면(32)은 상기 유용층(10)과 상기 제1 중간층(40) 상에 배치된 제2 중간층(50) 사이의 계면에 의해 형성되고, 상기 제2 기능 계면(32)은 그 피크-대-밸리 진폭이 0.1 마이크론보다 큰 제2 결정된 조도를 갖는, 제2 기능 계면(32);을 포함하는 것을 특징으로 하는, 표면 음향파 디바이스용 하이브리드 구조체(100). - 제1항에 있어서,
상기 트래핑층(30)은 상기 지지 기판(20)과 직접 접촉하는, 표면 음향파 디바이스용 하이브리드 구조체(100). - 제1항 또는 제2항에 있어서,
상기 트래핑층(30)은 비정질 실리콘, 다결정 실리콘, 비정질 또는 다결정 게르마늄 중에서 선택된 재료로 형성되는, 표면 음향파 디바이스용 하이브리드 구조체(100). - 제1항 또는 제2항에 있어서,
상기 트래핑층(30)은 상기 지지 기판(20)의 표면층에의 주입 또는 상기 지지 기판(20)의 상기 표면층의 에칭 및 구조화에 의해 형성되는, 표면 음향파 디바이스용 하이브리드 구조체(100). - 삭제
- 삭제
- 제1항에 있어서,
상기 제1 중간층(40)은 실리콘 산화물, 실리콘 질화물, 실리콘 산질화물 또는 상기 유용층(10)을 형성하는 재료와 동일한 유형의 재료 중에서 선택된 재료를 포함하는, 표면 음향파 디바이스용 하이브리드 구조체(100). - 삭제
- 삭제
- 제1항에 있어서,
상기 제2 중간층(50)은 실리콘 산화물, 실리콘 질화물, 실리콘 산질화물 또는 상기 유용층(10)을 형성하는 재료와 동일한 유형의 재료 중에서 선택된 재료를 포함하는, 표면 음향파 디바이스용 하이브리드 구조체(100). - 제1항에 있어서,
상기 제1 중간층(40)과 상기 제2 중간층(50)은 동일한 재료로 형성되는, 표면 음향파 디바이스용 하이브리드 구조체(100). - 제1항 또는 제2항에 있어서,
상기 유용층(10)은 탄탈산 리튬(LiTaO3), 니오브산 리튬(LiNbO3), 석영, 산화 아연(ZnO) 및 질화 알루미늄(AlN) 중에서 선택되는 압전 재료를 포함하는, 표면 음향파 디바이스용 하이브리드 구조체(100). - 제1항 또는 제2항에 있어서,
상기 지지 기판은 벌크(bulk) 기판 또는 적어도 하나의 블랭크(blank)층을 포함하거나 마이크로 전자 구성 요소들의 전부 또는 일부를 포함하는 복합 기판인, 표면 음향파 디바이스용 하이브리드 구조체(100). - 제1항 또는 제2항에 따른 하이브리드 구조체(100)를 포함하는 표면 음향파 디바이스(200).
- 삭제
- 표면 음향파 디바이스용 하이브리드 구조체(100)의 제조 방법으로서:
제1면(1) 및 제2면(2)을 포함하는 압전 재료의 유용층(10)을 제공하는 단계;
상기 유용층(10)의 열팽창 계수보다 더 낮은 열 팽창 계수를 갖는 지지 기판(20)을 제공하는 단계;
상기 지지 기판(20) 상에 상기 유용층(10)을 배치하기 위한 조립 단계를 포함하고,
상기 방법은, 상기 조립 단계 이전에:
상기 지지 기판(20) 상에 결정된 조도를 갖는 트래핑층(30)을 형성하는 단계;
·상기 트래핑층(30) 상에 제1 중간층(40)을 형성하는 단계로서, 상기 트래핑층(30)과 상기 제1 중간층(40) 사이의 계면은 결정된 조도의 기능 계면(31)을 형성하는 단계를 포함하는 것을 특징으로 하는, 하이브리드 구조체(100)의 제조 방법. - 제16항에 있어서,
상기 조립 단계는 상기 제1 중간층(40)과 상기 유용층(10)의 상기 제2면(2) 사이에서 수행되는, 하이브리드 구조체(100)의 제조 방법. - 제17항에 있어서,
상기 조립 단계 전에, 제2 결정된 조도를 갖는 상기 유용층(10)의 상기 제2면(2) 상에 제2 중간층(50)을 형성하는 단계를 포함하고, 상기 조립 단계는 상기 제1 중간층(40)과 상기 제2 중간층(50) 사이에서 수행되고; 상기 유용층(10)과 상기 제2 중간층(50) 사이의 계면은 제2 기능 계면(32)을 형성하는, 하이브리드 구조체(100)의 제조 방법.
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FR1656191A FR3053532B1 (fr) | 2016-06-30 | 2016-06-30 | Structure hybride pour dispositif a ondes acoustiques de surface |
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PCT/FR2017/051701 WO2018002504A1 (fr) | 2016-06-30 | 2017-06-26 | Structure hybride pour dispositif a ondes acoustiques de surface |
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US20190372552A1 (en) | 2019-12-05 |
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US20200336127A1 (en) | 2020-10-22 |
CN109417124B (zh) | 2022-11-15 |
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FR3053532A1 (fr) | 2018-01-05 |
WO2018002504A1 (fr) | 2018-01-04 |
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KR20190025649A (ko) | 2019-03-11 |
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