JP7123652B2 - レーザー加工装置 - Google Patents
レーザー加工装置 Download PDFInfo
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- JP7123652B2 JP7123652B2 JP2018116663A JP2018116663A JP7123652B2 JP 7123652 B2 JP7123652 B2 JP 7123652B2 JP 2018116663 A JP2018116663 A JP 2018116663A JP 2018116663 A JP2018116663 A JP 2018116663A JP 7123652 B2 JP7123652 B2 JP 7123652B2
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- 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
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
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- 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
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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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- 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
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
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- 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
- B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—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
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
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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
- B23K26/02—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
- B23K26/0643—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising mirrors
-
- 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
- B23K26/02—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
- B23K26/0652—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising prisms
-
- 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
- B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
-
- 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
- B23K26/0665—Shaping the laser beam, e.g. by masks or multi-focusing by beam condensation on the workpiece, e.g. for focusing
-
- 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
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
- B23K26/0676—Dividing the beam into multiple beams, e.g. multifocusing into dependently operating sub-beams, e.g. an array of spots with fixed spatial relationship or for performing simultaneously identical operations
-
- 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
- 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
- B23K26/50—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
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/02—Carriages for supporting the welding or cutting element
- B23K37/0211—Carriages for supporting the welding or cutting element travelling on a guide member, e.g. rail, track
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
-
- 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
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Description
集光スポットの間隔×1.4≦V/R≦集光スポットの間隔×2
であるのが好都合である(たとえば、集光スポットS1およびS2の間隔を5μm、繰り返し周波数を60kHzとすると、加工送り速度Vは420~600mm/sである。)。これによって、最初の第一のパルスレーザー光線LB1および第二のパルスレーザー光線LB2によって形成される改質層およびクラックと、次の第一のパルスレーザー光線LB1および第二のパルスレーザー光線LB2によって形成される改質層およびクラックとが連結する。したがって、分割予定ライン74に沿ってウエーハ72の内部に形成される改質層およびクラックが、分割予定ライン74の一端部から他端部まで連結することになるので、ウエーハ72を個々のデバイス76に分割するのが一層容易になる。
[実験条件]
パルスレーザー光線の波長 :1064nm
繰り返し周波数R :60kHz
平均出力 :0~1W
分岐前のパルスレーザー光線のパルスエネルギー :0~16.7μJ
第一のパルスレーザー光線のパルスエネルギー :0~8.3μJ
第二のパルスレーザー光線のパルスエネルギー :0~8.3μJ
加工送り速度V :0~1000mm/s
V/R :0~16.7μm
[好適な加工条件]
パルスレーザー光線の波長 :1064nm
繰り返し周波数R :60kHz
平均出力 :0.72~0.9W
分岐前のパルスレーザー光線のパルスエネルギー :12~15μJ
第一のパルスレーザー光線のパルスエネルギー :6~7.5μJ
第二のパルスレーザー光線のパルスエネルギー :6~7.5μJ
加工送り速度V :420~720mm/s
V/R :7~12μm
4:保持手段
6:レーザー光線照射手段
8:X軸送り手段
10:Y軸送り手段
30:発振器
32:集光器
34:分岐部
36:マスク部
72:ウエーハ
72a:ウエーハの表面
72b:ウエーハの裏面
74:分割予定ライン
76:デバイス
Claims (4)
- 複数のデバイスが分割予定ラインによって区画され表面に形成されたウエーハの内部に改質層を形成するレーザー加工装置であって、
ウエーハを保持する保持手段と、該保持手段に保持されたウエーハにパルスレーザー光線を照射しウエーハの内部に改質層を形成するレーザー光線照射手段と、該保持手段と該レーザー光線照射手段とを相対的にX軸方向に加工送りするX軸送り手段と、該保持手段と該レーザー光線照射手段とを相対的にX軸方向に交差するY軸方向に割り出し送りするY軸送り手段と、を含み、
該レーザー光線照射手段は、ウエーハに対して透過性を有する波長のパルスレーザー光線を発振する発振器と、該発振器が発振したパルスレーザー光線を該保持手段に保持されたウエーハに集光する集光器と、該発振器と該集光器との間に配設され該発振器が発振したパルスレーザー光線を分岐してX軸方向に少なくとも2個の集光スポットを生成する分岐部と、該発振器と該集光器との間に配設され該発振器が発振したパルスレーザー光線の集光スポットをY軸方向に縮小し該分割予定ラインの幅に納めるマスク部と、から少なくとも構成され、
該マスク部は、互いにY軸方向に間隔をおいて配置された一対のマスク片と、該一対のマスク片をY軸方向に移動させる一対の隙間調整手段とを含み、該一対の隙間調整手段で該一対のマスク片間の隙間を調整することによってパルスレーザー光線の集光スポットをY軸方向に縮小し該分割予定ラインの幅に納めるレーザー加工装置。 - 少なくとも2個に分岐される集光スポットの間隔は、隣接する改質層のX軸方向に伸展するクラックが連結する間隔に設定される請求項1記載のレーザー加工装置。
- 分岐前のパルスレーザー光線のパルスエネルギーは12~15μJであり、パルスレーザー光線は該分岐部によって2個の集光スポットに分岐される請求項2記載のレーザー加工装置。
- 2個の集光スポットの間隔は5~6μmであり、該X軸送り手段による相対的な加工送り速度をV(mm/s)とし、繰り返し周波数をR(kHz)とすると、
集光スポットの間隔×1.4≦V/R≦集光スポットの間隔×2
である請求項3記載のレーザー加工装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018116663A JP7123652B2 (ja) | 2018-06-20 | 2018-06-20 | レーザー加工装置 |
KR1020190063113A KR102662458B1 (ko) | 2018-06-20 | 2019-05-29 | 레이저 가공 장치 |
TW108120943A TWI802712B (zh) | 2018-06-20 | 2019-06-17 | 雷射加工裝置 |
CN201910526976.5A CN110625275B (zh) | 2018-06-20 | 2019-06-18 | 激光加工装置 |
DE102019208936.4A DE102019208936A1 (de) | 2018-06-20 | 2019-06-19 | Laserbearbeitungsvorrichtung |
US16/446,176 US11548096B2 (en) | 2018-06-20 | 2019-06-19 | Laser processing apparatus |
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JP2018116663A JP7123652B2 (ja) | 2018-06-20 | 2018-06-20 | レーザー加工装置 |
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JP2019217527A JP2019217527A (ja) | 2019-12-26 |
JP7123652B2 true JP7123652B2 (ja) | 2022-08-23 |
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JP2018116663A Active JP7123652B2 (ja) | 2018-06-20 | 2018-06-20 | レーザー加工装置 |
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US (1) | US11548096B2 (ja) |
JP (1) | JP7123652B2 (ja) |
KR (1) | KR102662458B1 (ja) |
CN (1) | CN110625275B (ja) |
DE (1) | DE102019208936A1 (ja) |
TW (1) | TWI802712B (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10744595B2 (en) * | 2018-05-09 | 2020-08-18 | Trumpf Inc. | Transversal laser cutting machine |
JP7451972B2 (ja) | 2019-11-29 | 2024-03-19 | 株式会社リコー | 液吐出ユニット、液吐出装置および液吐出方法 |
JP7479755B2 (ja) * | 2020-02-25 | 2024-05-09 | 株式会社ディスコ | チップの製造方法 |
JP7507599B2 (ja) * | 2020-05-12 | 2024-06-28 | 株式会社ディスコ | レーザー加工方法 |
JP2022163321A (ja) * | 2021-04-14 | 2022-10-26 | 株式会社ディスコ | ウエーハの加工方法及びウエーハの加工装置 |
CN114289880A (zh) * | 2021-12-28 | 2022-04-08 | 苏州富纳智能科技有限公司 | 一种全自动智能的产品打标设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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