JP2021034477A - レーザー加工方法 - Google Patents
レーザー加工方法 Download PDFInfo
- Publication number
- JP2021034477A JP2021034477A JP2019151333A JP2019151333A JP2021034477A JP 2021034477 A JP2021034477 A JP 2021034477A JP 2019151333 A JP2019151333 A JP 2019151333A JP 2019151333 A JP2019151333 A JP 2019151333A JP 2021034477 A JP2021034477 A JP 2021034477A
- Authority
- JP
- Japan
- Prior art keywords
- modified layer
- wafer
- division line
- intersection
- laser beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 15
- 230000001678 irradiating effect Effects 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000002390 adhesive tape Substances 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/046—Automatically focusing the laser beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23K26/50—Working by transmitting the laser beam through or within the workpiece
- B23K26/53—Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/0869—Devices involving movement of the laser head in at least one axial direction
- B23K26/0876—Devices involving movement of the laser head in at least one axial direction in at least two axial directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D5/00—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/36—Electric or electronic devices
- B23K2101/40—Semiconductor devices
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Dicing (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
パルスレーザー光線の波長 :1342nm
繰り返し周波数 :90kHz
平均出力 :1.2W
送り速度 :700mm/s
2a:ウエーハの表面
2b:ウエーハの裏面
4:分割予定ライン
4a:第一の分割予定ライン
4b:第二の分割予定ライン
16:第一の分割予定ラインの内部に形成された改質層
18:中央領域
22:第二の分割予定ラインの内部に形成された改質層
22a:開始位置から交差点C1の近傍まで延びる改質層
22b:開始位置から交差点C2の近傍まで延びる改質層
D1:第一の方向
D2:第二の方向
LB:パルスレーザー光線
FP:集光点
C1、C2:交差点
Claims (1)
- ウエーハに対して透過性を有する波長のレーザー光線の集光点を分割予定ラインの内部に位置づけてレーザー光線をウエーハに照射し、ウエーハをチップに分割するための起点となる改質層を分割予定ラインの内部に形成するレーザー加工方法であって、
第一の方向に延在する複数の第一の分割予定ラインの内部に改質層を形成する第一の改質層形成工程と、
該第一の方向に交差する第二の方向に延在する複数の第二の分割予定ラインの内部に改質層を形成する第二の改質層形成工程と、
を含み、
該第二の改質層形成工程において、第二の分割予定ラインおよび既に改質層が形成された第一の分割予定ラインの交差点と隣接する交差点とで規制された第二の分割予定ラインの中央領域からそれぞれの交差点の近傍までレーザー光線を照射して改質層を形成するレーザー加工方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019151333A JP7420508B2 (ja) | 2019-08-21 | 2019-08-21 | レーザー加工方法 |
KR1020200086622A KR20210023684A (ko) | 2019-08-21 | 2020-07-14 | 레이저 가공 방법 |
CN202010842959.5A CN112404703A (zh) | 2019-08-21 | 2020-08-20 | 激光加工方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019151333A JP7420508B2 (ja) | 2019-08-21 | 2019-08-21 | レーザー加工方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2021034477A true JP2021034477A (ja) | 2021-03-01 |
JP7420508B2 JP7420508B2 (ja) | 2024-01-23 |
Family
ID=74676046
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019151333A Active JP7420508B2 (ja) | 2019-08-21 | 2019-08-21 | レーザー加工方法 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP7420508B2 (ja) |
KR (1) | KR20210023684A (ja) |
CN (1) | CN112404703A (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014033163A (ja) * | 2012-08-06 | 2014-02-20 | Disco Abrasive Syst Ltd | ウェーハの分割方法 |
JP2018063987A (ja) * | 2016-10-11 | 2018-04-19 | 株式会社ディスコ | ウェーハの加工方法 |
JP2018098295A (ja) * | 2016-12-09 | 2018-06-21 | 株式会社ディスコ | ウェーハの加工方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3408805B2 (ja) | 2000-09-13 | 2003-05-19 | 浜松ホトニクス株式会社 | 切断起点領域形成方法及び加工対象物切断方法 |
JP5545648B2 (ja) | 2010-06-22 | 2014-07-09 | 住友電工デバイス・イノベーション株式会社 | 半導体ウエハの劈開方法 |
JP6045361B2 (ja) | 2013-01-17 | 2016-12-14 | 株式会社ディスコ | ウエーハの加工方法 |
-
2019
- 2019-08-21 JP JP2019151333A patent/JP7420508B2/ja active Active
-
2020
- 2020-07-14 KR KR1020200086622A patent/KR20210023684A/ko active Search and Examination
- 2020-08-20 CN CN202010842959.5A patent/CN112404703A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014033163A (ja) * | 2012-08-06 | 2014-02-20 | Disco Abrasive Syst Ltd | ウェーハの分割方法 |
JP2018063987A (ja) * | 2016-10-11 | 2018-04-19 | 株式会社ディスコ | ウェーハの加工方法 |
JP2018098295A (ja) * | 2016-12-09 | 2018-06-21 | 株式会社ディスコ | ウェーハの加工方法 |
Also Published As
Publication number | Publication date |
---|---|
CN112404703A (zh) | 2021-02-26 |
KR20210023684A (ko) | 2021-03-04 |
JP7420508B2 (ja) | 2024-01-23 |
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