KR101775258B1 - 단결정 SiC 기판의 표면 가공 방법, 그 제조 방법 및 단결정 SiC 기판의 표면 가공용 연삭 플레이트 - Google Patents
단결정 SiC 기판의 표면 가공 방법, 그 제조 방법 및 단결정 SiC 기판의 표면 가공용 연삭 플레이트 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 연삭 플레이트를 사용하는 표면 연삭 장치의 일례의 구조의 일부를 도시하는 모식도이다.
도 3은 본 발명의 제1 실시예에서의 가공 전의 단결정 SiC 잉곳 표면의 광학 현미경 사진이다.
도 4는 본 발명의 제1 실시예에서의 가공 후의 단결정 SiC 잉곳 표면의 광학 현미경 사진이다.
2: 연질 패드
3: 경질 패드
10: 단결정 SiC 기판의 표면 가공용 연삭 플레이트
Claims (13)
- 평탄면을 갖는 베이스 메탈 상에 연질 패드, 경질 패드가 순서대로 부착된 연삭 플레이트이며, 상기 경질 패드의 표면에 단결정 SiC보다도 부드럽고, 또한 밴드 갭을 갖는 적어도 1종 이상의 금속 산화물을 포함하는 지립이 고정된 연삭 플레이트를 연삭 장치에 장착하고,
상기 금속 산화물이 적어도 산화 세륨을 포함하고,
상기 연삭 플레이트에 의해 산화 생성물을 생기게 하고, 그 산화 생성물을 제거하면서 표면의 연삭을 행하고,
피가공물 테이블의 회전 방향이 연삭 플레이트의 회전 방향과 역방향이며, 경질 패드는 세그먼트화된 것이고, 피가공물 테이블의 회전 속도가 30rpm 내지 300rpm인 것을 특징으로 하는 단결정 SiC 기판의 표면 가공 방법. - 제1항에 있어서, 쿨런트로서 순수를 사용하는 것을 특징으로 하는 단결정 SiC 기판의 표면 가공 방법.
- 제1항에 있어서, 쿨런트를 사용하지 않거나, 또는 쿨런트로서 사용하는 순수의 공급 속도가 0ml/min 초과 내지 100ml/min 이하인 것을 특징으로 하는 단결정 SiC 기판의 표면 가공 방법.
- 제1항에 있어서, 연삭되는 표면을 SiC 기판의 (0001)면의 C면으로 하는 것을 특징으로 하는 단결정 SiC 기판의 표면 가공 방법.
- 평탄면을 갖는 베이스 메탈 상에 연질 패드, 경질 패드가 순서대로 부착된 연삭 플레이트이며, 상기 경질 패드의 표면에 단결정 SiC보다도 부드럽고, 또한 밴드 갭을 갖는 적어도 1종 이상의 금속 산화물을 포함하는 지립이 고정된 연삭 플레이트를 연삭 장치에 장착하고,
상기 금속 산화물이 적어도 산화 세륨을 포함하고,
상기 연삭 플레이트에 의해 산화 생성물을 생기게 하고, 그 산화 생성물을 제거하면서 표면의 연삭을 행하는 공정을 갖고,
피가공물 테이블의 회전 방향이 연삭 플레이트의 회전 방향과 역방향이며, 경질 패드는 세그먼트화된 것이고, 피가공물 테이블의 회전 속도가 30rpm 내지 300rpm인 것을 특징으로 하는 단결정 SiC 기판의 제조 방법. - 평탄면을 갖는 베이스 메탈 상에 연질 패드, 경질 패드가 순서대로 부착된 연삭 플레이트이며, 상기 경질 패드의 표면에 단결정 SiC보다도 부드럽고, 또한 밴드 갭을 갖는 적어도 1종 이상의 금속 산화물을 포함하는 지립이 고정되어 있고,
상기 금속 산화물이 적어도 산화 세륨을 포함하고,
상기 경질 패드는 세그먼트화된 것을 특징으로 하는 단결정 SiC 기판의 표면 가공용 연삭 플레이트. - 제5항에 있어서, 연삭되는 표면을 SiC 기판의 (0001)면의 C면으로 하는 것을 특징으로 하는 단결정 SiC 기판의 제조 방법.
- 제6항에 있어서, 상기 경질 패드가 직각 삼각형 형상으로 세그먼트화된 것을 특징으로 하는 단결정 SiC 기판의 표면 가공용 연삭 플레이트.
- 제6항에 있어서, 상기 지립의 비표면적이 0.1㎡/g 내지 300㎡/g인 것을 특징으로 하는 단결정 SiC 기판의 표면 가공용 연삭 플레이트.
- 제6항에 있어서, 상기 연질 패드가 부직포계 또는 스웨이드계인 것을 특징으로 하는 단결정 SiC 기판의 표면 가공용 연삭 플레이트.
- 제6항에 있어서, 상기 경질 패드가 발포 폴리우레탄계인 것을 특징으로 하는 단결정 SiC 기판의 표면 가공용 연삭 플레이트.
- 제6항에 있어서, 상기 지립을 결합제 및/또는 접착제로 고정시킨 것을 특징으로 하는 단결정 SiC 기판의 표면 가공용 연삭 플레이트.
- 제6항에 있어서, 상기 지립의 고정은, 고정 지립 필름을 경질 패드에 부착함으로써 이루어져 있는 것을 특징으로 하는 단결정 SiC 기판의 표면 가공용 연삭 플레이트.
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JP2013026081A JP6016301B2 (ja) | 2013-02-13 | 2013-02-13 | 単結晶SiC基板の表面加工方法、その製造方法及び単結晶SiC基板の表面加工用研削プレート |
JPJP-P-2013-026081 | 2013-02-13 | ||
PCT/JP2014/053379 WO2014126174A1 (ja) | 2013-02-13 | 2014-02-13 | 単結晶SiC基板の表面加工方法、その製造方法及び単結晶SiC基板の表面加工用研削プレート |
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JP6475518B2 (ja) * | 2015-03-03 | 2019-02-27 | 株式会社ディスコ | ウエーハの加工方法 |
JP6948798B2 (ja) * | 2017-02-14 | 2021-10-13 | 株式会社ディスコ | 研削ホイール |
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US20180218916A1 (en) | 2018-08-02 |
TWI515784B (zh) | 2016-01-01 |
US20170178919A1 (en) | 2017-06-22 |
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US9960048B2 (en) | 2018-05-01 |
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CN104981324A (zh) | 2015-10-14 |
US20160035579A1 (en) | 2016-02-04 |
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