JP6935224B2 - ウエーハの生成方法 - Google Patents
ウエーハの生成方法 Download PDFInfo
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- JP6935224B2 JP6935224B2 JP2017086074A JP2017086074A JP6935224B2 JP 6935224 B2 JP6935224 B2 JP 6935224B2 JP 2017086074 A JP2017086074 A JP 2017086074A JP 2017086074 A JP2017086074 A JP 2017086074A JP 6935224 B2 JP6935224 B2 JP 6935224B2
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- 238000000034 method Methods 0.000 title claims description 17
- 239000013078 crystal Substances 0.000 claims description 58
- 238000007493 shaping process Methods 0.000 claims description 19
- 239000006061 abrasive grain Substances 0.000 claims description 10
- 229910003460 diamond Inorganic materials 0.000 claims description 8
- 239000010432 diamond Substances 0.000 claims description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 49
- 229910010271 silicon carbide Inorganic materials 0.000 description 49
- 239000010410 layer Substances 0.000 description 40
- 239000000853 adhesive Substances 0.000 description 8
- 230000001070 adhesive effect Effects 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 239000002346 layers by function Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Classifications
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- 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
- H01L21/0405—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 semiconducting carbon, e.g. diamond, diamond-like carbon
-
- 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
- H01L21/7806—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 involving the separation of the active layers from a substrate
-
- 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
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/3568—Modifying rugosity
- B23K26/3576—Diminishing rugosity, e.g. grinding; Polishing; Smoothing
-
- 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
-
- 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
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
- B24B7/228—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding thin, brittle parts, e.g. semiconductors, wafers
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/36—Carbides
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/02—Heat treatment
-
- 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
- H01L21/02002—Preparing wafers
- H01L21/02005—Preparing bulk and homogeneous wafers
- H01L21/02008—Multistep processes
-
- 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
- H01L21/02002—Preparing wafers
- H01L21/02005—Preparing bulk and homogeneous wafers
- H01L21/02008—Multistep processes
- H01L21/0201—Specific process step
- H01L21/02013—Grinding, lapping
-
- 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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02367—Substrates
- H01L21/0237—Materials
- H01L21/02373—Group 14 semiconducting materials
- H01L21/02378—Silicon carbide
-
- 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
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02587—Structure
- H01L21/0259—Microstructure
- H01L21/02598—Microstructure monocrystalline
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
- H01L29/1608—Silicon carbide
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Thermal Sciences (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Laser Beam Processing (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Description
パルスレーザー光線の波長 :1064nm
繰り返し周波数 :80kHz
平均出力 :3.2W
パルス幅 :4ns
集光点の直径 :3μm
集光レンズの開口数(NA) :0.43
インデックス量 :250〜400μm
加工送り速度 :120〜260mm/s
集光点の位置 :単結晶SiCインゴットの平坦面から300μm
4:第一の面(平坦面)
6:第二の面
10:垂線
22:改質層
24:クラック
26:剥離層
40:ウエーハ
42:ウエーハが剥離された単結晶SiCインゴットの上面
58:第一の研削砥石(第一の研削ステップで使用する研削砥石)
74:第二の研削砥石(第二の研削ステップで使用する研削砥石)
α:オフ角
A:オフ角が形成される方向
FP:集光点
LB:パルスレーザー光線
Claims (2)
- 単結晶SiCインゴットからウエーハを生成するウエーハの生成方法であって、
単結晶SiCインゴットの平坦面から生成すべきウエーハの厚みに相当する深さに単結晶SiCインゴットに対して透過性を有する波長のパルスレーザー光線の集光点を位置づけて単結晶SiCインゴットにパルスレーザー光線を照射し剥離層を形成する剥離層形成工程と、
該剥離層を起点として生成すべきウエーハを単結晶SiCインゴットから剥離するウエーハの剥離工程と、
ウエーハが剥離されたことによって単結晶SiCインゴットの上面に生じた凹凸を研削して除去し平坦面に整形する平坦面整形工程と、
を含み、
該平坦面整形工程は、
単結晶SiCインゴットの上面を荒研削して該凹凸を残して不完全に除去する第一の研削ステップと、
単結晶SiCインゴットの上面を仕上げ研削して残った該凹凸を除去して平坦面に仕上げる第二の研削ステップと、
から少なくとも構成され、
該第一の研削ステップで使用する研削砥石は#1000〜2000のダイヤモンド砥粒で構成されていて、該第二の研削ステップで使用する研削砥石は#7000〜8000のダイヤモンド砥粒で構成されており、
該第一の研削ステップにおいて単結晶SiCインゴットの上面の該凹凸の70〜90%を研削し、該第二の研削ステップにおいて単結晶SiCインゴットの上面の該凹凸の10〜30%を研削して平坦面に仕上げるウエーハの生成方法。 - 単結晶SiCインゴットは、平坦面である第一の面と、該第一の面と反対側の第二の面と、該第一の面から該第二の面に至り該第一の面の垂線に対して傾いているc軸と、該c軸に直交するc面とを有しており、該c面と該第一の面とでオフ角が形成されており、
該剥離層形成工程において、
単結晶SiCインゴットに対して透過性を有する波長のパルスレーザー光線の集光点を該第一の面から生成すべきウエーハの厚みに相当する深さに位置づけると共に該オフ角が形成される方向と直交する方向に単結晶SiCインゴットと該集光点とを相対的に移動してSiCがSiとCとに分離し次に照射されるパルスレーザー光線が前に形成されたCに吸収されて連鎖的にSiCがSiとCとに分離して形成される直線状の改質層およびクラックを形成し、該オフ角が形成される方向に単結晶SiCインゴットと該集光点とを相対的に移動して所定量インデックスして剥離層を形成する請求項1記載のウエーハの生成方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017086074A JP6935224B2 (ja) | 2017-04-25 | 2017-04-25 | ウエーハの生成方法 |
KR1020180039327A KR102450902B1 (ko) | 2017-04-25 | 2018-04-04 | SiC 웨이퍼의 생성 방법 |
MYPI2018701406A MY187031A (en) | 2017-04-25 | 2018-04-09 | Sic wafer producing method |
CN201810315321.9A CN108735578A (zh) | 2017-04-25 | 2018-04-10 | SiC晶片的生成方法 |
DE102018205905.5A DE102018205905A1 (de) | 2017-04-25 | 2018-04-18 | SiC-Waferherstellungsverfahren |
SG10201803304XA SG10201803304XA (en) | 2017-04-25 | 2018-04-19 | SiC WAFER PRODUCING METHOD |
TW107113763A TWI748088B (zh) | 2017-04-25 | 2018-04-23 | SiC晶圓之生成方法 |
US15/962,685 US10872758B2 (en) | 2017-04-25 | 2018-04-25 | SiC wafer producing method |
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JP2017086074A JP6935224B2 (ja) | 2017-04-25 | 2017-04-25 | ウエーハの生成方法 |
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JP2018186153A JP2018186153A (ja) | 2018-11-22 |
JP6935224B2 true JP6935224B2 (ja) | 2021-09-15 |
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US (1) | US10872758B2 (ja) |
JP (1) | JP6935224B2 (ja) |
KR (1) | KR102450902B1 (ja) |
CN (1) | CN108735578A (ja) |
DE (1) | DE102018205905A1 (ja) |
MY (1) | MY187031A (ja) |
SG (1) | SG10201803304XA (ja) |
TW (1) | TWI748088B (ja) |
Families Citing this family (13)
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JP7128067B2 (ja) * | 2018-09-14 | 2022-08-30 | 株式会社ディスコ | ウエーハの生成方法およびレーザー加工装置 |
US10562130B1 (en) | 2018-12-29 | 2020-02-18 | Cree, Inc. | Laser-assisted method for parting crystalline material |
US11024501B2 (en) | 2018-12-29 | 2021-06-01 | Cree, Inc. | Carrier-assisted method for parting crystalline material along laser damage region |
US10576585B1 (en) | 2018-12-29 | 2020-03-03 | Cree, Inc. | Laser-assisted method for parting crystalline material |
US10611052B1 (en) | 2019-05-17 | 2020-04-07 | Cree, Inc. | Silicon carbide wafers with relaxed positive bow and related methods |
JP7330771B2 (ja) * | 2019-06-14 | 2023-08-22 | 株式会社ディスコ | ウエーハの生成方法およびウエーハの生成装置 |
CN111215766A (zh) * | 2019-12-26 | 2020-06-02 | 松山湖材料实验室 | SiC晶片制造方法 |
JP7405649B2 (ja) * | 2020-03-04 | 2023-12-26 | 株式会社ディスコ | 被加工物の研削方法 |
JP7500261B2 (ja) * | 2020-04-10 | 2024-06-17 | 株式会社ディスコ | ウエーハの生成方法 |
US11848197B2 (en) | 2020-11-30 | 2023-12-19 | Thinsic Inc. | Integrated method for low-cost wide band gap semiconductor device manufacturing |
JP2022180079A (ja) * | 2021-05-24 | 2022-12-06 | 株式会社ディスコ | 基板の分離方法 |
TWI849565B (zh) * | 2022-11-07 | 2024-07-21 | 財團法人工業技術研究院 | 碳化矽錠裂片裝置與方法 |
WO2024139561A1 (zh) * | 2022-12-30 | 2024-07-04 | 山东天岳先进科技股份有限公司 | 一种8英寸以上碳化硅衬底及其低应力加工方法 |
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JP2000094221A (ja) | 1998-09-24 | 2000-04-04 | Toyo Advanced Technologies Co Ltd | 放電式ワイヤソー |
JP5162163B2 (ja) * | 2007-06-27 | 2013-03-13 | 株式会社ディスコ | ウェーハのレーザ加工方法 |
JP5134928B2 (ja) * | 2007-11-30 | 2013-01-30 | 浜松ホトニクス株式会社 | 加工対象物研削方法 |
JP5470081B2 (ja) * | 2010-02-16 | 2014-04-16 | 株式会社岡本工作機械製作所 | 化合物半導体基板の平坦化加工装置および平坦化加工方法 |
RU2459691C2 (ru) * | 2010-11-29 | 2012-08-27 | Юрий Георгиевич Шретер | Способ отделения поверхностного слоя полупроводникового кристалла (варианты) |
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JP6506520B2 (ja) * | 2014-09-16 | 2019-04-24 | 株式会社ディスコ | SiCのスライス方法 |
JP6295969B2 (ja) | 2015-01-27 | 2018-03-20 | 日立金属株式会社 | 単結晶炭化珪素基板、単結晶炭化珪素基板の製造方法、および単結晶炭化珪素基板の検査方法 |
JP6456228B2 (ja) | 2015-04-15 | 2019-01-23 | 株式会社ディスコ | 薄板の分離方法 |
JP6444249B2 (ja) * | 2015-04-15 | 2018-12-26 | 株式会社ディスコ | ウエーハの生成方法 |
JP6478821B2 (ja) * | 2015-06-05 | 2019-03-06 | 株式会社ディスコ | ウエーハの生成方法 |
JP6486240B2 (ja) * | 2015-08-18 | 2019-03-20 | 株式会社ディスコ | ウエーハの加工方法 |
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- 2018-04-04 KR KR1020180039327A patent/KR102450902B1/ko active IP Right Grant
- 2018-04-09 MY MYPI2018701406A patent/MY187031A/en unknown
- 2018-04-10 CN CN201810315321.9A patent/CN108735578A/zh active Pending
- 2018-04-18 DE DE102018205905.5A patent/DE102018205905A1/de active Pending
- 2018-04-19 SG SG10201803304XA patent/SG10201803304XA/en unknown
- 2018-04-23 TW TW107113763A patent/TWI748088B/zh active
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Also Published As
Publication number | Publication date |
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CN108735578A (zh) | 2018-11-02 |
SG10201803304XA (en) | 2018-11-29 |
MY187031A (en) | 2021-08-26 |
TW201839843A (zh) | 2018-11-01 |
TWI748088B (zh) | 2021-12-01 |
KR20180119481A (ko) | 2018-11-02 |
US10872758B2 (en) | 2020-12-22 |
JP2018186153A (ja) | 2018-11-22 |
US20180308679A1 (en) | 2018-10-25 |
DE102018205905A1 (de) | 2018-10-25 |
KR102450902B1 (ko) | 2022-10-04 |
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