KR102232092B1 - 웨이퍼의 가공 방법 - Google Patents
웨이퍼의 가공 방법 Download PDFInfo
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- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical group [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 8
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Abstract
(해결 수단) 서로 교차하는 복수의 분할 예정 라인에 의해 구획된 영역에 복수의 디바이스가 복굴절성을 갖는 결정 구조로 이루어지는 기판의 표면에 형성된 웨이퍼를 개개의 디바이스 칩으로 분할하는 웨이퍼의 가공 방법으로서, 그 웨이퍼의 이면으로부터 촬상 유닛에 의해 표면에 형성된 분할 예정 라인을 검출하는 검출 공정과, 그 검출된 분할 예정 라인에 대응하는 이면으로부터 레이저 광선을 조사하여 분할의 기점을 형성하는 분할 기점 형성 공정과, 그 웨이퍼에 외력을 부여하여 개개의 디바이스 칩으로 분할하는 분할 공정을 포함하고, 그 검출 공정에 있어서, 그 촬상 유닛에 구비된 촬상 소자와 결상 렌즈를 잇는 광축 상에 배치 형성된 편광자가 그 기판 내에서 복굴절하여 나타나는 이상광을 차단함과 함께, 통상광을 그 촬상 소자에 유도한다.
Description
도 2 는 구성된 레이저 가공 장치의 전체 사시도이다.
도 3 은 도 2 에 나타난 레이저 가공 장치에 배치 형성되는 촬상 수단을 설명하기 위한 설명도이다.
도 4 는 도 3 에 나타난 촬상 수단에 의해 실행되는 검출 공정의 원리를 설명하는 개략 사시도이다.
도 5 는 도 2 에 기재된 레이저 가공 장치에 의해 실행되는 레이저 가공을 설명하는 사시도이다.
도 6 은 본 발명에 기초하여 실행되는 분할 공정을 설명하는 단면도이다.
도 7 은 도 3 에 나타난 촬상 수단의 다른 실시형태를 설명하기 위한 개략 사시도이다.
12:SAW 디바이스
14:분할 예정 라인
40:레이저 가공 장치
41:기대
42:유지 기구
43:이동 수단
44:레이저 광선 조사 수단
44a:집광기
45:프레임체
50:촬상 수단
52:표시 장치
54:촬상 소자
56:결상 렌즈
58:편광판
58′:편광 빔 스플리터
70:분할 장치
Claims (4)
- 복굴절성을 갖는 결정 구조로 이루어지는 재료로 형성되고, 표면의 서로 교차하는 복수의 분할 예정 라인에 의해 구획된 영역에 복수의 디바이스가 형성된 웨이퍼를 개개의 디바이스 칩으로 분할하는 웨이퍼의 가공 방법으로서,
그 웨이퍼의 이면으로부터 촬상 수단에 의해 표면에 형성된 분할 예정 라인을 검출하는 검출 공정과,
그 검출된 분할 예정 라인에 대응하는 이면으로부터 레이저 광선을 조사하여 분할의 기점을 형성하는 분할 기점 형성 공정과,
그 웨이퍼에 외력을 부여하여 개개의 디바이스 칩으로 분할하는 분할 공정을 포함하고,
그 검출 공정에 있어서, 그 촬상 수단에 구비된 촬상 소자와 결상 렌즈를 잇는 광축 상에 배치 형성된 편광자가 복굴절성을 갖는 결정 구조로 이루어지는 그 재료 내에서 복굴절하여 나타나는 이상광을 차단함과 함께, 통상광을 그 촬상 소자에 유도하는, 웨이퍼의 가공 방법. - 제 1 항에 있어서,
그 편광자는, 편향판, 또는 편광 빔 스플리터를 포함하는, 웨이퍼의 가공 방법. - 제 1 항에 있어서,
복굴절성을 갖는 결정 구조로 이루어지는 그 재료는, 리튬니오베이트 (LiNbO3) 이고, 그 디바이스는 SAW 디바이스인, 웨이퍼의 가공 방법. - 제 3 항에 있어서,
그 웨이퍼에 형성된 결정 방위를 나타내는 오리엔테이션 플랫에 대해 편광면이 직교하는 직선 편광이 통상광인, 웨이퍼의 가공 방법.
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JPJP-P-2016-080348 | 2016-04-13 | ||
JP2016080348A JP6625926B2 (ja) | 2016-04-13 | 2016-04-13 | ウエーハの加工方法 |
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US (1) | US9887140B2 (ko) |
JP (1) | JP6625926B2 (ko) |
KR (1) | KR102232092B1 (ko) |
CN (1) | CN107301974B (ko) |
DE (1) | DE102017206324B4 (ko) |
TW (1) | TWI712079B (ko) |
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JP6654435B2 (ja) * | 2016-01-07 | 2020-02-26 | 株式会社ディスコ | ウエーハ生成方法 |
TWI623740B (zh) * | 2016-03-31 | 2018-05-11 | 松下知識產權經營股份有限公司 | 檢查方法、檢查系統及製造方法 |
WO2019188518A1 (ja) * | 2018-03-30 | 2019-10-03 | 東京エレクトロン株式会社 | レーザー加工装置、およびレーザー加工方法 |
JP7404009B2 (ja) * | 2019-09-19 | 2023-12-25 | キオクシア株式会社 | 加工情報管理システム及び加工情報管理方法 |
JP7547105B2 (ja) * | 2020-07-29 | 2024-09-09 | 株式会社ディスコ | Si基板生成方法 |
CN115714103B (zh) * | 2022-11-25 | 2023-11-24 | 拓荆键科(海宁)半导体设备有限公司 | 用于晶圆键合对准及检测的装置和方法 |
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JPH10305420A (ja) * | 1997-03-04 | 1998-11-17 | Ngk Insulators Ltd | 酸化物単結晶からなる母材の加工方法、機能性デバイスの製造方法 |
JP2001004486A (ja) * | 1999-06-23 | 2001-01-12 | Fujikura Ltd | 光ファイバ母材の検査方法と連続検査装置 |
JP5912287B2 (ja) | 2011-05-19 | 2016-04-27 | 株式会社ディスコ | レーザー加工方法およびレーザー加工装置 |
JP5882154B2 (ja) * | 2012-07-19 | 2016-03-09 | 太陽誘電株式会社 | 弾性波デバイスの製造方法 |
JP6151557B2 (ja) | 2013-05-13 | 2017-06-21 | 株式会社ディスコ | レーザー加工方法 |
JP6148108B2 (ja) * | 2013-08-05 | 2017-06-14 | 株式会社ディスコ | レーザー加工装置 |
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JP6336817B2 (ja) * | 2014-05-12 | 2018-06-06 | 太陽誘電株式会社 | 弾性波デバイス及びその製造方法 |
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JP2002192370A (ja) | 2000-09-13 | 2002-07-10 | Hamamatsu Photonics Kk | レーザ加工方法 |
JP2006112887A (ja) | 2004-10-14 | 2006-04-27 | Topcon Corp | 光画像計測装置 |
US20100267219A1 (en) | 2009-04-20 | 2010-10-21 | Disco Corporation | Optical device wafer processing method |
JP2012096274A (ja) | 2010-11-04 | 2012-05-24 | Disco Corp | レーザー加工装置 |
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CN107301974A (zh) | 2017-10-27 |
TWI712079B (zh) | 2020-12-01 |
DE102017206324A1 (de) | 2017-10-19 |
TW201738948A (zh) | 2017-11-01 |
US20170301592A1 (en) | 2017-10-19 |
DE102017206324B4 (de) | 2020-07-02 |
JP6625926B2 (ja) | 2019-12-25 |
JP2017191851A (ja) | 2017-10-19 |
KR20170117318A (ko) | 2017-10-23 |
US9887140B2 (en) | 2018-02-06 |
CN107301974B (zh) | 2021-02-19 |
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