JP6358941B2 - 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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- JP6358941B2 JP6358941B2 JP2014246229A JP2014246229A JP6358941B2 JP 6358941 B2 JP6358941 B2 JP 6358941B2 JP 2014246229 A JP2014246229 A JP 2014246229A JP 2014246229 A JP2014246229 A JP 2014246229A JP 6358941 B2 JP6358941 B2 JP 6358941B2
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- 238000000034 method Methods 0.000 title claims description 18
- 239000013078 crystal Substances 0.000 claims description 44
- 238000000926 separation method Methods 0.000 claims description 28
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 54
- 235000012431 wafers Nutrition 0.000 description 44
- 238000003825 pressing Methods 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 230000001902 propagating effect Effects 0.000 description 6
- 230000001678 irradiating effect Effects 0.000 description 3
- 239000002346 layers by function Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 229910009372 YVO4 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Classifications
-
- 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
- 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
- B23K26/06—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
- B23K26/08—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
- B23K26/50—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
- B23K26/50—Working by transmitting the laser beam through or within the workpiece
- B23K26/55—Working by transmitting the laser beam through or within the workpiece for creating voids inside the workpiece, e.g. for forming flow passages or flow patterns
-
- 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
- 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
- C30B29/40—AIIIBV compounds wherein A is B, Al, Ga, In or Tl and B is N, P, As, Sb or Bi
- C30B29/403—AIII-nitrides
- C30B29/406—Gallium nitride
-
- 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
- C30B33/06—Joining of crystals
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Laser Beam Processing (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- High Energy & Nuclear Physics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
波長 :1064nm
繰り返し周波数 :80kHz
平均出力 :3.2W
パルス幅 :4ns
スポット径 :10μm
集光レンズの開口数(NA) :0.45
インデックス量 :400μm
11 六方晶単結晶インゴット
11a 第一の面(表面)
11b 第二の面(裏面)
13 第一のオリエンテーションフラット
15 第二のオリエンテーションフラット
17 第一の面の垂線
19 c軸
21 c面
23 改質層
25 クラック
26 支持テーブル
30 レーザービーム照射ユニット
36 集光器(レーザーヘッド)
54 押圧機構
56 ヘッド
58 押圧部材
Claims (2)
- 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るc軸と、該c軸に直交するc面とを有する六方晶単結晶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、
六方晶単結晶インゴットに対して透過性を有する波長のレーザービームの集光点を該第一の面から生成するウエーハの厚みに相当する深さに位置づけると共に、該集光点と該六方晶単結晶インゴットとを相対的に移動して該レーザービームを該第一の面に照射し、該第一の面に平行な改質層及び該改質層から伸長するクラックを形成して分離起点を形成する分離起点形成ステップと、
該分離起点形成ステップを実施した後、該分離起点からウエーハの厚みに相当する板状物を該六方晶単結晶インゴットから剥離して六方晶単結晶ウエーハを生成するウエーハ剥離ステップと、を備え、
該分離起点形成ステップは、該第一の面の垂線に対して該c軸がオフ角分傾き、該第一の面と該c面との間にオフ角が形成される方向と直交する方向にレーザービームの集光点を相対的に移動して直線状の改質層を形成する改質層形成ステップと、
該オフ角が形成される方向に該集光点を相対的に移動して所定量インデックスするインデックスステップと、を含み、
該分離起点形成ステップにおいて、形成された改質層にレーザービームの集光点を位置づけて該改質層に複数回レーザービームを照射して改質層とクラックとを乖離させることを特徴とするウエーハの生成方法。 - 六方晶単結晶インゴットは、SiCインゴット、又はGaNインゴットから選択される請求項1記載のウエーハの生成方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014246229A JP6358941B2 (ja) | 2014-12-04 | 2014-12-04 | ウエーハの生成方法 |
TW104136024A TWI687560B (zh) | 2014-12-04 | 2015-11-02 | 晶圓的生成方法 |
MYPI2015704149A MY180538A (en) | 2014-12-04 | 2015-11-17 | Wafer producing method |
SG10201509475VA SG10201509475VA (en) | 2014-12-04 | 2015-11-17 | Wafer producing method |
US14/953,718 US9789565B2 (en) | 2014-12-04 | 2015-11-30 | Wafer producing method |
CN201510856866.7A CN105665949B (zh) | 2014-12-04 | 2015-11-30 | 晶片的生成方法 |
KR1020150171724A KR102341600B1 (ko) | 2014-12-04 | 2015-12-03 | 웨이퍼의 생성 방법 |
DE102015224318.4A DE102015224318B4 (de) | 2014-12-04 | 2015-12-04 | Wafer-herstellungsverfahren |
Applications Claiming Priority (1)
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---|---|---|---|
JP2014246229A JP6358941B2 (ja) | 2014-12-04 | 2014-12-04 | ウエーハの生成方法 |
Publications (2)
Publication Number | Publication Date |
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JP2016111150A JP2016111150A (ja) | 2016-06-20 |
JP6358941B2 true JP6358941B2 (ja) | 2018-07-18 |
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JP2014246229A Active JP6358941B2 (ja) | 2014-12-04 | 2014-12-04 | ウエーハの生成方法 |
Country Status (8)
Country | Link |
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US (1) | US9789565B2 (ja) |
JP (1) | JP6358941B2 (ja) |
KR (1) | KR102341600B1 (ja) |
CN (1) | CN105665949B (ja) |
DE (1) | DE102015224318B4 (ja) |
MY (1) | MY180538A (ja) |
SG (1) | SG10201509475VA (ja) |
TW (1) | TWI687560B (ja) |
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JP6399914B2 (ja) * | 2014-12-04 | 2018-10-03 | 株式会社ディスコ | ウエーハの生成方法 |
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JP6472333B2 (ja) | 2015-06-02 | 2019-02-20 | 株式会社ディスコ | ウエーハの生成方法 |
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US9789565B2 (en) | 2017-10-17 |
DE102015224318A1 (de) | 2016-06-09 |
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