JP2021170613A - 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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- JP2021170613A JP2021170613A JP2020073786A JP2020073786A JP2021170613A JP 2021170613 A JP2021170613 A JP 2021170613A JP 2020073786 A JP2020073786 A JP 2020073786A JP 2020073786 A JP2020073786 A JP 2020073786A JP 2021170613 A JP2021170613 A JP 2021170613A
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- Prior art keywords
- wafer
- ingot
- face
- laser beam
- generated
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 54
- 238000002679 ablation Methods 0.000 claims abstract description 7
- 230000001678 irradiating effect Effects 0.000 claims abstract description 7
- 235000012431 wafers Nutrition 0.000 claims description 98
- 239000013078 crystal Substances 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000035699 permeability Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 41
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 17
- 229910010271 silicon carbide Inorganic materials 0.000 description 16
- 239000000758 substrate Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 239000010703 silicon Substances 0.000 description 3
- 229910002601 GaN Inorganic materials 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 2
- 239000002346 layers by function 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
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 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
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
- B23K26/402—Removing material taking account of the properties of the material involved involving non-metallic material, e.g. isolators
-
- 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
-
- 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
-
- 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
- B23K26/062—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
-
- 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
-
- 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
- B28D5/0005—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing
- B28D5/0011—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by breaking, e.g. dicing with preliminary treatment, e.g. weakening by scoring
-
- 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
- B28D5/04—Fine working of gems, jewels, crystals, e.g. of semiconductor material; apparatus or devices therefor by tools other than rotary type, e.g. reciprocating tools
-
- 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
-
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/0445—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising crystalline silicon carbide
-
- 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
- B23K2103/56—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26 semiconducting
Abstract
Description
パルスレーザー光線の波長 :1064nm
繰り返し周波数 :120kHz
平均出力 :8.0W
集光点の直径 :1μm
インデックス量 :250〜400μm
送り速度 :934mm/s
波長 :355nm
繰り返し周波数 :40kHz
平均出力 :1.1W
集光点の直径 :46μm
4:第一の端面
6:第二の端面
8:周面
10:垂線
24:改質層
26:クラック
28:剥離層
29:製造履歴
52:ウエーハ
α:オフ角
A:オフ角が形成される方向
Claims (3)
- 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、
インゴットの端面を平坦化する平坦化工程と、
平坦化された端面からインゴット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生成すべきウエーハの厚みに相当する深さに位置づけてレーザー光線をインゴットに照射し剥離層を形成する剥離層形成工程と、
生成すべきウエーハのデバイスが形成されない領域の上面に次に生成すべきウエーハにダメージを与えない特性のレーザー光線の集光点を位置づけてレーザー光線をインゴットに照射し製造履歴をアブレーション加工で形成する製造履歴形成工程と、
インゴットから剥離層を起点として生成すべきウエーハを剥離してウエーハを生成するウエーハ生成工程と、
から、少なくとも構成されるウエーハの生成方法。 - 該製造履歴形成工程において形成する製造履歴は、インゴットのロットナンバー、生成されるウエーハの順番、製造年月日、製造工場、生成に寄与した機種のいずれかが含まれる請求項1記載のウエーハの生成方法。
- インゴットは、第一の端面と、該第一の端面と反対側の第二の端面と、該第一の端面から該第二の端面に至るc軸と、該c軸に直交するc面とを有する単結晶SiCインゴットであり、該第一の端面の垂線に対して該c軸が傾き該c面と該第一の端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端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 (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020073786A JP2021170613A (ja) | 2020-04-17 | 2020-04-17 | ウエーハの生成方法 |
KR1020210034353A KR20210128908A (ko) | 2020-04-17 | 2021-03-17 | 웨이퍼의 생성 방법 |
US17/220,405 US20210323098A1 (en) | 2020-04-17 | 2021-04-01 | Wafer production method |
CN202110388226.3A CN113523614A (zh) | 2020-04-17 | 2021-04-12 | 晶片的生成方法 |
DE102021203616.3A DE102021203616A1 (de) | 2020-04-17 | 2021-04-13 | Waferherstellungsverfahren |
TW110113311A TW202140870A (zh) | 2020-04-17 | 2021-04-14 | 晶圓之生成方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020073786A JP2021170613A (ja) | 2020-04-17 | 2020-04-17 | ウエーハの生成方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2021170613A true JP2021170613A (ja) | 2021-10-28 |
Family
ID=77919682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020073786A Pending JP2021170613A (ja) | 2020-04-17 | 2020-04-17 | ウエーハの生成方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210323098A1 (ja) |
JP (1) | JP2021170613A (ja) |
KR (1) | KR20210128908A (ja) |
CN (1) | CN113523614A (ja) |
DE (1) | DE102021203616A1 (ja) |
TW (1) | TW202140870A (ja) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000094221A (ja) | 1998-09-24 | 2000-04-04 | Toyo Advanced Technologies Co Ltd | 放電式ワイヤソー |
JP6524972B2 (ja) * | 2015-09-28 | 2019-06-05 | Jsr株式会社 | 対象物の処理方法、仮固定用組成物、半導体装置及びその製造方法 |
JP2019029382A (ja) | 2017-07-25 | 2019-02-21 | 株式会社ディスコ | ウエーハの生成方法およびウエーハ生成装置 |
-
2020
- 2020-04-17 JP JP2020073786A patent/JP2021170613A/ja active Pending
-
2021
- 2021-03-17 KR KR1020210034353A patent/KR20210128908A/ko active Search and Examination
- 2021-04-01 US US17/220,405 patent/US20210323098A1/en active Pending
- 2021-04-12 CN CN202110388226.3A patent/CN113523614A/zh active Pending
- 2021-04-13 DE DE102021203616.3A patent/DE102021203616A1/de active Pending
- 2021-04-14 TW TW110113311A patent/TW202140870A/zh unknown
Also Published As
Publication number | Publication date |
---|---|
KR20210128908A (ko) | 2021-10-27 |
TW202140870A (zh) | 2021-11-01 |
DE102021203616A1 (de) | 2021-10-21 |
CN113523614A (zh) | 2021-10-22 |
US20210323098A1 (en) | 2021-10-21 |
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