KR102674905B1 - 웨이퍼의 가공 방법 - Google Patents
웨이퍼의 가공 방법 Download PDFInfo
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/18—Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
- B23K26/364—Laser etching for making a groove or trench, e.g. for scribing a break initiation groove
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
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- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
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- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
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- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
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Abstract
웨이퍼의 가공 방법은, 웨이퍼의 적층체를 보호막으로 피복하는 보호막 피복 단계(ST1)와, 스트리트의 폭 방향의 양단에 레이저 빔을 조사하여, 스트리트에 2줄의 레이저 가공홈을 형성하는 제1 레이저 가공 단계(ST3)와, 스트리트를 따라 레이저 빔을 조사함으로써 2줄의 레이저 가공홈 사이의 적층체를 보호막과 함께 제거하는 제2 레이저 가공 단계(ST4)와, 스트리트의 기재(基材)가 노출된 영역을 절삭 블레이드로 절삭하는 절삭 단계(ST5)와, 보호막 피복 단계(ST1)를 실시한 후, 제1 레이저 가공 단계(ST3)를 실시하기 전에, 2줄의 레이저 가공홈이 형성되는 위치보다 스트리트의 내측에 레이저 빔을 조사하여 보호막을 제거하는 보호막 제거 단계(ST2)를 포함한다.
Description
도 2는 도 1에 도시된 웨이퍼의 주요부의 단면도이다.
도 3은 실시형태 1에 따른 웨이퍼의 가공 방법의 흐름을 도시한 플로우차트이다.
도 4는 도 3에 도시된 웨이퍼의 가공 방법에서 이용되는 레이저 가공 장치의 구성예를 도시한 사시도이다.
도 5는 도 3에 도시된 웨이퍼의 가공 방법의 보호막 피복 단계를 도시한 측단면도이다.
도 6은 도 3에 도시된 웨이퍼의 가공 방법의 보호막 제거 단계를 도시한 측단면도이다.
도 7은 도 3에 도시된 웨이퍼의 가공 방법의 보호막 제거 단계의 웨이퍼의 주요부를 도시한 단면도이다.
도 8은 도 3에 도시된 웨이퍼의 가공 방법의 보호막 제거 단계 후의 웨이퍼의 주요부를 도시한 단면도이다.
도 9는 도 3에 도시된 웨이퍼의 가공 방법의 보호막 제거 단계 후의 웨이퍼의 주요부를 도시한 평면도이다.
도 10은 도 3에 도시된 웨이퍼의 가공 방법의 제1 레이저 가공 단계의 웨이퍼의 주요부를 도시한 단면도이다.
도 11은 도 3에 도시된 웨이퍼의 가공 방법의 제1 레이저 가공 단계 후의 웨이퍼의 주요부를 도시한 단면도이다.
도 12는 도 3에 도시된 웨이퍼의 가공 방법의 제1 레이저 가공 단계 후의 웨이퍼의 주요부를 도시한 평면도이다.
도 13은 도 3에 도시된 웨이퍼의 가공 방법의 제2 레이저 가공 단계의 웨이퍼의 주요부를 도시한 단면도이다.
도 14는 도 3에 도시된 웨이퍼의 가공 방법의 절삭 단계의 웨이퍼의 주요부를 도시한 단면도이다.
3: 적층체 4: 스트리트
4-1: 영역 5: 디바이스
6: 보호막 9: 레이저 가공홈
200: 레이저 빔 210: 레이저 빔
300: 절삭 블레이드 ST1: 보호막 피복 단계
ST2: 보호막 제거 단계 ST3: 제1 레이저 가공 단계
ST4: 제2 레이저 가공 단계 ST5: 절삭 단계
Claims (2)
- 기재(基材) 상에 적층체가 적층되고, 미리 정해진 폭을 가진 복수의 스트리트를 구비한 웨이퍼의 가공 방법에 있어서,
상기 적층체의 표면을 보호막으로 피복하는 보호막 피복 단계와,
상기 보호막 피복 단계를 실시한 후, 스트리트의 내측에서 상기 스트리트의 폭 방향의 양단에 레이저 빔을 각각 집광시킨 상태에서 상기 스트리트를 따라 레이저 빔을 조사하여, 상기 스트리트에 2줄의 레이저 가공홈을 형성하는 제1 레이저 가공 단계와,
상기 제1 레이저 가공 단계를 실시한 후, 상기 스트리트를 따라 레이저 빔을 조사함으로써 상기 2줄의 레이저 가공홈 사이의 적층체를 보호막과 함께 제거하여 상기 기재를 노출시키는 제2 레이저 가공 단계와,
상기 제2 레이저 가공 단계를 실시한 후, 상기 스트리트의 상기 기재가 노출된 영역을 절삭 블레이드로 절삭하는 절삭 단계를 포함하고,
상기 보호막 피복 단계를 실시한 후, 상기 제1 레이저 가공 단계를 실시하기 전에, 상기 2줄의 레이저 가공홈이 형성되는 위치보다 상기 스트리트의 내측에서 상기 스트리트의 폭 방향으로 늘어선 2점에 레이저 빔을 집광시킨 상태에서 상기 스트리트를 따라 레이저 빔을 조사하여 상기 2줄의 레이저 가공홈이 형성되는 위치를 포함하는 영역의 적어도 상기 보호막을 제거하는 보호막 제거 단계를 포함하는, 웨이퍼의 가공 방법. - 제1항에 있어서, 상기 보호막 제거 단계와 상기 제1 레이저 가공 단계에서는 동일한 조건으로 상기 레이저 빔을 조사하는, 웨이퍼의 가공 방법.
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JP2013026440A (ja) | 2011-07-21 | 2013-02-04 | Renesas Electronics Corp | 半導体装置の製造方法 |
KR101511648B1 (ko) | 2010-06-22 | 2015-04-13 | 어플라이드 머티어리얼스, 인코포레이티드 | 펨토초-기반의 레이저를 이용한 웨이퍼 다이싱 및 플라즈마 식각 |
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JPH05326696A (ja) * | 1992-05-25 | 1993-12-10 | Sanyo Electric Co Ltd | 半導体ウエハー |
JP2004055852A (ja) * | 2002-07-19 | 2004-02-19 | Ricoh Co Ltd | 半導体装置及びその製造方法 |
JP2005064230A (ja) | 2003-08-12 | 2005-03-10 | Disco Abrasive Syst Ltd | 板状物の分割方法 |
JP4750427B2 (ja) * | 2005-01-13 | 2011-08-17 | 株式会社ディスコ | ウエーハのレーザー加工方法 |
JP4813985B2 (ja) | 2006-06-23 | 2011-11-09 | 株式会社ディスコ | ウエーハの加工条件設定方法 |
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JP6037659B2 (ja) * | 2012-05-25 | 2016-12-07 | 株式会社ディスコ | ウェーハの分割方法 |
TWI614914B (zh) * | 2014-07-11 | 2018-02-11 | 晶元光電股份有限公司 | 發光元件及其製造方法 |
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JP6665047B2 (ja) | 2016-06-29 | 2020-03-13 | 株式会社ディスコ | デバイスのパッケージ方法 |
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KR101511648B1 (ko) | 2010-06-22 | 2015-04-13 | 어플라이드 머티어리얼스, 인코포레이티드 | 펨토초-기반의 레이저를 이용한 웨이퍼 다이싱 및 플라즈마 식각 |
JP2013026440A (ja) | 2011-07-21 | 2013-02-04 | Renesas Electronics Corp | 半導体装置の製造方法 |
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