KR20170077790A - 웨이퍼의 가공 방법 - Google Patents
웨이퍼의 가공 방법 Download PDFInfo
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Abstract
(해결 수단) 레이저 가공 홈 형성 중에, 웨이퍼에 펄스 레이저 광선을 조사함으로써 발생하는 빔 플라즈마 (300) 를 포함하는 가공 영역을 촬상 수단 (36) 에 의해 촬상하여, 펄스 레이저 광선의 빔 플라즈마 (300) 의 위치와 미리 설정된 가공 위치 (36a) 의 위치 관계를 계측함으로써, 레이저 가공 중에 원하는 위치가 가공되고 있는지의 여부를 실시간으로 파악할 수 있어, 가공 위치에 차이가 있는 경우에는, 즉시 가공 위치를 수정하는 것이 가능해진다.
Description
도 2 는 레이저 가공 장치에 장비되는 레이저 광선 조사 수단을 나타내는 블록 구성도이다.
도 3(a) 는 가공 대상 웨이퍼의 예를 나타내는 평면도이고, 도 3(b) 는 웨이퍼의 일부 확대 평면도이다.
도 4 는 디바이스 중의 키 패턴과 분할 예정 라인의 위치 관계를 나타내는 일부 확대 평면도이다.
도 5 는 웨이퍼의 중심 및 에지를 나타내는 평면도이다.
도 6(a) 는 1 개의 분할 예정 라인의 레이저 가공의 개시시를 나타내는 정면도이고, 도 6(b) 는 1 개의 분할 예정 라인의 레이저 가공의 종료시를 나타내는 정면도이며, 도 6(c) 는 형성된 레이저 가공 홈을 나타내는 단면도이다.
도 7 은 펄스 레이저 광선의 조사와 커프 체크를 위한 광의 조사의 타이밍을 나타내는 타이밍 차트이다.
도 8 은 촬상 수단의 기준선과 레이저 가공 홈 및 빔 플라즈마의 위치 관계의 예를 나타내는 평면도이다.
2 : 척 테이블
20 : 흡인부
21 : 프레임체
22 : 클램프부
23 : 회전 구동부
24 : 커버
3 : 레이저 광선 조사 수단
30 : 레이저 가공 홈
300 : 빔 플라즈마
30a : 빔 플라즈마 중앙선
31 : 펄스 레이저 광선 발진 수단
311 : 펄스 레이저 광선 발진기
312 : 반복 주파수 설정 수단
32 : 집광기
321 : 집광 렌즈
33 : 다이크로익 미러
34 : 스트로보 광 조사 수단
341 : 스트로보 광원
342 : 조리개
343 : 렌즈
344 : 방향 변환 미러
35 : 빔 스플리터
36 : 촬상 수단
36a : 기준선
361 : 듀얼 렌즈
361a : 수차 보정 렌즈
361b : 결상 렌즈
362 : 촬상 소자 (CCD)
37 : 어긋남량
4 : X 축 방향 이동 수단
40 : 볼 나사
41 : 가이드 레일
42 : 모터
43 : 베어링부
44 : 이동 기대
441 : 피안내 홈
45 : X 축 방향 위치 검출 수단
451 : 리니어 스케일
452 : 판독 헤드
5 : Y 축 방향 이동 수단
50 : 볼 나사
51 : 가이드 레일
52 : 모터
53 : 베어링부
54 : 이동 기대
541 : 피안내 홈
55 : Y 축 방향 위치 검출 수단
551 : 리니어 스케일
552 : 판독 헤드
60 : 정지 기대
61 : 지지 부재
62 : 케이싱
7 : 얼라인먼트 수단
70 : 카메라
80 : 제어 수단
81 : 기억 수단
W : 웨이퍼
W1 : 표면
D : 디바이스
L, LX1 ∼ LX5, LY1 ∼ LY3 : 분할 예정 라인
11 ∼ 16 : 영역
T : 테이프
F : 프레임
17, 18 : 금속 패턴
KP : 키 패턴
Claims (2)
- 기판의 표면에 격자상으로 형성된 복수의 분할 예정 라인에 의해 구획된 각 영역에 디바이스가 형성된 웨이퍼에 펄스 레이저 광선 조사 수단에 의해 펄스 레이저 광선을 조사하여 웨이퍼를 가공하는 웨이퍼의 가공 방법으로서,
레이저 가공 장치의 얼라인먼트 수단에 의해 그 웨이퍼의 가공 위치인 그 분할 예정 라인을 검출하는 얼라인먼트 스텝과,
상기 얼라인먼트 스텝을 실시한 후에, 상기 펄스 레이저 광선 조사 수단에 의해 펄스 레이저 광선을 상기 분할 예정 라인을 따라 조사하여, 레이저 가공 홈을 형성하는 레이저 가공 홈 형성 스텝과,
상기 레이저 가공 홈 형성 스텝의 실시 중에, 상기 펄스 레이저 광선 조사 수단에 의해 상기 웨이퍼에 펄스 레이저 광선을 조사함으로써 발생하는 빔 플라즈마를 포함하는 가공 영역을 촬상 수단에 의해 촬상하여, 상기 펄스 레이저 광선의 상기 빔 플라즈마의 위치와 미리 설정된 가공 위치의 위치 관계를 계측하는 가공 위치 계측 스텝을 구비한, 웨이퍼의 가공 방법. - 제 1 항에 있어서,
상기 웨이퍼의 상기 분할 예정 라인에 테스트용 금속 패턴이 일정한 주기로 형성되어 있고,
상기 얼라인먼트 스텝을 실시하기 전에, 상기 금속 패턴의 주기 및 위치 정보를 레이저 가공 장치의 기억 수단에 기억시키는 금속 패턴 위치 기억 스텝을 추가로 구비하고,
상기 가공 위치 계측 스텝에 있어서는, 상기 금속 패턴 위치 기억 스텝에서 미리 기억한 상기 금속 패턴의 주기 및 위치 정보에 기초하여 상기 금속 패턴 위치 이외의 위치에 있어서 상기 위치 관계를 계측하는 것을 특징으로 하는 웨이퍼의 가공 방법.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPJP-P-2015-256353 | 2015-12-28 | ||
| JP2015256353A JP6600254B2 (ja) | 2015-12-28 | 2015-12-28 | ウェーハの加工方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20170077790A true KR20170077790A (ko) | 2017-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020160169572A Ceased KR20170077790A (ko) | 2015-12-28 | 2016-12-13 | 웨이퍼의 가공 방법 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US9870961B2 (ko) |
| JP (1) | JP6600254B2 (ko) |
| KR (1) | KR20170077790A (ko) |
| CN (1) | CN106925897B (ko) |
| MY (1) | MY174992A (ko) |
| SG (1) | SG10201610632XA (ko) |
| TW (1) | TWI723068B (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10192773B2 (en) * | 2016-06-20 | 2019-01-29 | Nexperia B.V. | Semiconductor device positioning system and method for semiconductor device positioning |
| JP6870974B2 (ja) * | 2016-12-08 | 2021-05-12 | 株式会社ディスコ | 被加工物の分割方法 |
| JP6938212B2 (ja) | 2017-05-11 | 2021-09-22 | 株式会社ディスコ | 加工方法 |
| JP6925745B2 (ja) * | 2017-11-30 | 2021-08-25 | 株式会社ディスコ | ウェーハのレーザー加工方法 |
| JP7137930B2 (ja) * | 2018-01-11 | 2022-09-15 | 株式会社ディスコ | 被加工物の加工方法 |
| JP7013276B2 (ja) * | 2018-02-23 | 2022-01-31 | 株式会社ディスコ | 加工装置 |
| JP7022624B2 (ja) * | 2018-03-13 | 2022-02-18 | 株式会社ディスコ | 位置付け方法 |
| JP7313805B2 (ja) * | 2018-08-15 | 2023-07-25 | 株式会社ディスコ | 切削装置 |
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| JP7305273B2 (ja) * | 2019-09-19 | 2023-07-10 | 株式会社ディスコ | レーザー加工方法及びレーザー加工装置 |
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| JP7735649B2 (ja) * | 2020-02-19 | 2025-09-09 | 株式会社東京精密 | レーザ加工装置 |
| EP3868508A1 (en) | 2020-02-19 | 2021-08-25 | Tokyo Seimitsu Co., Ltd. | Laser processing apparatus |
| JP7563898B2 (ja) * | 2020-05-26 | 2024-10-08 | 株式会社ディスコ | 透明部材又は半透明部材を貼り合わせた貼り合わせワークの研削方法、及び貼り合わせワークの研削装置 |
| JP7475211B2 (ja) * | 2020-06-17 | 2024-04-26 | 株式会社ディスコ | レーザー加工装置の検査方法 |
| JP7620377B2 (ja) * | 2020-10-15 | 2025-01-23 | 株式会社ディスコ | レーザー加工装置 |
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| CN112775025B (zh) * | 2020-12-28 | 2022-11-18 | 广东利扬芯片测试股份有限公司 | 条状芯片智能打点系统及方法 |
| JP7796494B2 (ja) * | 2021-09-02 | 2026-01-09 | 株式会社ディスコ | 基板の加工方法 |
| JP7814170B2 (ja) | 2022-01-12 | 2026-02-16 | 株式会社ディスコ | レーザ光線照射装置及びレーザ光線照射方法 |
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| JP2025139428A (ja) * | 2024-03-12 | 2025-09-26 | 東レエンジニアリング株式会社 | レーザ加工装置およびレーザ加工方法 |
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| JP2005252196A (ja) * | 2004-03-08 | 2005-09-15 | Toshiba Corp | 半導体装置及びその製造方法 |
| JP2012151225A (ja) | 2011-01-18 | 2012-08-09 | Disco Abrasive Syst Ltd | 切削溝の計測方法 |
| US8557683B2 (en) * | 2011-06-15 | 2013-10-15 | Applied Materials, Inc. | Multi-step and asymmetrically shaped laser beam scribing |
| TWI520199B (zh) * | 2012-02-18 | 2016-02-01 | 先進科技新加坡有限公司 | 用於以劃線對準之執行中控制而對一實質平面半導體基板劃線之方法及裝置 |
| JP5992731B2 (ja) * | 2012-06-07 | 2016-09-14 | 株式会社ディスコ | ウエーハの加工方法 |
| JP6124547B2 (ja) * | 2012-10-16 | 2017-05-10 | 株式会社ディスコ | 加工方法 |
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