JP7043124B2 - ウェーハの加工方法 - Google Patents
ウェーハの加工方法 Download PDFInfo
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- JP7043124B2 JP7043124B2 JP2017182993A JP2017182993A JP7043124B2 JP 7043124 B2 JP7043124 B2 JP 7043124B2 JP 2017182993 A JP2017182993 A JP 2017182993A JP 2017182993 A JP2017182993 A JP 2017182993A JP 7043124 B2 JP7043124 B2 JP 7043124B2
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- 238000003672 processing method Methods 0.000 title claims description 17
- 238000012545 processing Methods 0.000 claims description 86
- 238000003754 machining Methods 0.000 claims description 80
- 238000001514 detection method Methods 0.000 claims description 18
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 235000012431 wafers Nutrition 0.000 description 116
- 238000002407 reforming Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/268—Bombardment with radiation with high-energy radiation using electromagnetic radiation, e.g. laser radiation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67092—Apparatus for mechanical treatment
-
- 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
- B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
-
- 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
- B23K26/03—Observing, e.g. monitoring, the workpiece
-
- 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
- B23K26/0823—Devices involving rotation of the workpiece
-
- 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
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0853—Devices involving movement of the workpiece in at least in two axial directions, e.g. in a plane
-
- 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
-
- 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67132—Apparatus for placing on an insulating substrate, e.g. tape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- 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
-
- 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
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/52—Ceramics
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/54—Glass
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
- B23K2103/56—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26 semiconducting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Dicing (AREA)
- Laser Beam Processing (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Description
1a 表面
1b 裏面
3 分割予定ライン
5 デバイス
7 改質層
7a クラック
9 第1の領域
11 第2の領域
2 レーザ加工装置
4 基台
6 X軸移動機構
8a,8b,8c 移動テーブル
10a,10b,10c ガイドレール
12a,12b,12c ボールねじ
14a,14b,14c パルスモータ
16 Y軸移動機構
18 コラム
20 Z軸移動機構
22 保持テーブル
22a 保持面
22b クランプ
22c 吸引路
22d 吸引源
24 レーザ加工ユニット
26 加工ヘッド
28 カメラユニット
30 制御部
30a 加工条件記憶部
32 加工用レーザ発振器
34 レーザビーム
36,48 ミラー
38 ダイクロイックミラー
40,54, 集光レンズ
42 光源
44,50a,50b 光
46 ハーフミラー
50 反射光
52 ビームスプリッター
56,62 受光素子
58 シリンドリカルレンズ
60 一次元マスク
Claims (2)
- 複数の分割予定ラインが設定されたウェーハを保持する保持テーブルと、該保持テーブルで保持されたウェーハにレーザ加工を施すレーザ加工ユニットと、第1のレーザ加工条件及び第2のレーザ加工条件が登録された制御部と、を備えたレーザ加工装置でウェーハにレーザ加工を施す加工方法であって、
該ウェーハを該保持テーブルで保持する保持ステップと、
該保持ステップを実施した後、ウェーハに対して状態検出用の光を該複数の分割予定ラインに沿って照射して、ウェーハ上面からの該光の反射光を検出する反射光検出ステップと、
該反射光検出ステップで検出した反射光に基づいて該複数の該分割予定ラインのそれぞれに第1の領域と、第2の領域と、を設定する領域設定ステップと、
該ウェーハに対して透過性を有する波長のレーザビームの集光点をウェーハ内部に位置づけた状態で、一つの該分割予定ラインに対して該領域設定ステップで設定された該第1の領域のみに該第1のレーザ加工条件でレーザ加工を施す第1のレーザ加工ステップと、
該第1のレーザ加工ステップを実施した後、該レーザビームの集光点をウェーハ内部に位置づけた状態で、該一つの該分割予定ラインに対して該領域設定ステップで設定された該第2の領域のみに該第2のレーザ加工条件でレーザ加工を施す第2のレーザ加工ステップと、を備え、
該第1のレーザ加工ステップを実施した後、該第2のレーザ加工ステップを実施する前に、該一つの該分割予定ラインと同じ方向に伸長する他の全ての該分割予定ラインに対して該領域設定ステップで設定された該第1の領域のみに該第1のレーザ加工条件でレーザ加工を施すことを特徴とする加工方法。 - 該一つの該分割予定ラインの該第1の領域に形成される改質層の層の数は、該一つの該分割予定ラインの該該第2の領域に形成される改質層の層の数とは異なることを特徴とする請求項1に記載の加工方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017182993A JP7043124B2 (ja) | 2017-09-22 | 2017-09-22 | ウェーハの加工方法 |
US16/133,137 US10468255B2 (en) | 2017-09-22 | 2018-09-17 | Wafer processing method |
TW107133068A TWI772521B (zh) | 2017-09-22 | 2018-09-19 | 晶圓加工方法 |
DE102018216234.4A DE102018216234B4 (de) | 2017-09-22 | 2018-09-24 | Waferbearbeitungsverfahren |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017182993A JP7043124B2 (ja) | 2017-09-22 | 2017-09-22 | ウェーハの加工方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019061986A JP2019061986A (ja) | 2019-04-18 |
JP7043124B2 true JP7043124B2 (ja) | 2022-03-29 |
Family
ID=65638885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2017182993A Active JP7043124B2 (ja) | 2017-09-22 | 2017-09-22 | ウェーハの加工方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10468255B2 (ja) |
JP (1) | JP7043124B2 (ja) |
DE (1) | DE102018216234B4 (ja) |
TW (1) | TWI772521B (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7043124B2 (ja) * | 2017-09-22 | 2022-03-29 | 株式会社ディスコ | ウェーハの加工方法 |
CN107749407B (zh) * | 2017-09-22 | 2020-08-28 | 沈阳拓荆科技有限公司 | 晶圆承载盘及其支撑结构 |
JP2021010936A (ja) * | 2019-07-09 | 2021-02-04 | 株式会社ディスコ | レーザ加工装置 |
JP2023070909A (ja) * | 2021-11-10 | 2023-05-22 | 株式会社ディスコ | 乾燥検出方法及び乾燥検出装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012000636A (ja) | 2010-06-16 | 2012-01-05 | Showa Denko Kk | レーザ加工方法 |
JP2012059907A (ja) | 2010-09-09 | 2012-03-22 | Disco Abrasive Syst Ltd | 分割方法 |
JP2013165229A (ja) | 2012-02-13 | 2013-08-22 | Disco Abrasive Syst Ltd | 光デバイスウェーハの分割方法 |
JP2013230478A (ja) | 2012-04-27 | 2013-11-14 | Disco Corp | レーザー加工装置及びレーザー加工方法 |
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US6454860B2 (en) * | 1998-10-27 | 2002-09-24 | Applied Materials, Inc. | Deposition reactor having vaporizing, mixing and cleaning capabilities |
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 |
WO2003034417A1 (fr) * | 2001-10-10 | 2003-04-24 | Sony Corporation | Lentille optique, lentille de condensation, capteur optique et dispositif d'enregistrement/reproduction optique |
JP3977234B2 (ja) * | 2002-04-24 | 2007-09-19 | シャープ株式会社 | 光ピックアップ |
JP4813993B2 (ja) * | 2006-07-05 | 2011-11-09 | 株式会社ディスコ | ウエーハのレーザー加工方法 |
JP4977411B2 (ja) * | 2006-07-06 | 2012-07-18 | 株式会社ディスコ | レーザー加工装置 |
JP5118580B2 (ja) * | 2008-08-22 | 2013-01-16 | 株式会社ディスコ | 高さ位置検出装置および高さ位置検出方法 |
JP5930645B2 (ja) * | 2011-09-30 | 2016-06-08 | 株式会社ディスコ | ウエーハの加工方法 |
TW201446378A (zh) * | 2013-05-30 | 2014-12-16 | Ipg Microsystems Llc | 使用散光加長型光束點以及使用超短脈波及/或較長波長的雷射處理方法 |
JP5743123B1 (ja) * | 2014-03-14 | 2015-07-01 | 株式会社東京精密 | レーザーダイシング装置及びダイシング方法 |
JP2017098452A (ja) * | 2015-11-26 | 2017-06-01 | 株式会社ディスコ | 洗浄方法 |
JP6901909B2 (ja) * | 2017-06-05 | 2021-07-14 | 株式会社ディスコ | エキスパンド方法及びエキスパンド装置 |
JP7043124B2 (ja) * | 2017-09-22 | 2022-03-29 | 株式会社ディスコ | ウェーハの加工方法 |
-
2017
- 2017-09-22 JP JP2017182993A patent/JP7043124B2/ja active Active
-
2018
- 2018-09-17 US US16/133,137 patent/US10468255B2/en active Active
- 2018-09-19 TW TW107133068A patent/TWI772521B/zh active
- 2018-09-24 DE DE102018216234.4A patent/DE102018216234B4/de active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012000636A (ja) | 2010-06-16 | 2012-01-05 | Showa Denko Kk | レーザ加工方法 |
JP2012059907A (ja) | 2010-09-09 | 2012-03-22 | Disco Abrasive Syst Ltd | 分割方法 |
JP2013165229A (ja) | 2012-02-13 | 2013-08-22 | Disco Abrasive Syst Ltd | 光デバイスウェーハの分割方法 |
JP2013230478A (ja) | 2012-04-27 | 2013-11-14 | Disco Corp | レーザー加工装置及びレーザー加工方法 |
Also Published As
Publication number | Publication date |
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US20190096676A1 (en) | 2019-03-28 |
TW201916139A (zh) | 2019-04-16 |
DE102018216234B4 (de) | 2024-10-31 |
TWI772521B (zh) | 2022-08-01 |
US10468255B2 (en) | 2019-11-05 |
JP2019061986A (ja) | 2019-04-18 |
DE102018216234A1 (de) | 2019-03-28 |
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