KR20060024800A - 실리콘 웨이퍼의 가공 방법 - Google Patents
실리콘 웨이퍼의 가공 방법 Download PDFInfo
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- KR20060024800A KR20060024800A KR1020057024070A KR20057024070A KR20060024800A KR 20060024800 A KR20060024800 A KR 20060024800A KR 1020057024070 A KR1020057024070 A KR 1020057024070A KR 20057024070 A KR20057024070 A KR 20057024070A KR 20060024800 A KR20060024800 A KR 20060024800A
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- Prior art keywords
- acid
- etching
- wafer
- polishing
- etching solution
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 33
- 239000010703 silicon Substances 0.000 title claims abstract description 33
- 238000003672 processing method Methods 0.000 title claims abstract description 16
- 238000005530 etching Methods 0.000 claims abstract description 120
- 239000002253 acid Substances 0.000 claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 47
- 239000000243 solution Substances 0.000 claims abstract description 40
- 238000005498 polishing Methods 0.000 claims abstract description 39
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims abstract description 32
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 16
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 16
- 239000007864 aqueous solution Substances 0.000 claims abstract description 14
- 239000003513 alkali Substances 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 9
- 239000011260 aqueous acid Substances 0.000 claims description 3
- 238000004528 spin coating Methods 0.000 claims description 2
- 238000009987 spinning Methods 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 abstract description 20
- 230000002349 favourable effect Effects 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract 1
- 235000012431 wafers Nutrition 0.000 description 86
- 239000007788 liquid Substances 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 238000004439 roughness measurement Methods 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910001868 water Inorganic materials 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012360 testing method 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
- H01L21/18—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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
- H01L21/30608—Anisotropic liquid etching
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3063—Electrolytic etching
-
- 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
- H01L21/02019—Chemical etching
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Weting (AREA)
Abstract
Description
Claims (6)
- 랩핑 공정에 이어서 세정 공정을 거친 가공 변질층을 갖는 실리콘 웨이퍼를 불산 및 질산을 주성분으로 하는 산 수용액에 인산이 함유된 산 에칭액에 침지시켜 상기 웨이퍼를 에칭하는 실리콘 웨이퍼의 가공 방법.
- 제1항에 있어서, 불산 및 질산을 주성분으로 하는 산 수용액을 100중량%로 하였을 때, 상기 산 수용액은 인산을 30∼40중량% 함유하는 가공 방법.
- 복수의 에칭조에 산 에칭액과 알칼리 에칭액을 각각 저장하여, 랩핑 공정(11)에 이어서 세정 공정(12)을 거친 가공 변질층을 갖는 실리콘 웨이퍼를 산 에칭액과 알칼리 에칭액에 순차적으로 침지하는 에칭 공정(13)과,상기 에칭된 웨이퍼의 편면을 경면 연마하는 표면 경면 연마 공정(18)과,상기 표면 경면 연마된 웨이퍼를 세정하는 세정 공정(19)을 포함하는 실리콘 웨이퍼의 가공 방법에 있어서,상기 에칭 공정(13)이 산 에칭 후에 알칼리 에칭이 행해지는 공정으로서,상기 산 에칭액이 불산 및 질산을 주성분으로 하는 산 수용액 100중량%에 인산 30중량% 이상을 함유하는 것을 특징으로 하는 실리콘 웨이퍼의 가공 방법.
- 제3항에 있어서, 에칭 공정(13)과, 표면 경면 연마 공정(18)의 사이에 상기 에칭 공정(13)에서 형성된 웨이퍼 이면의 요철의 일부를 연마하는 이면 경연마 공정(17)을 더 포함하는 가공 방법.
- 제3항에 있어서, 불산 및 질산을 주성분으로 하는 산 수용액을 100중량%로 하였을 때, 상기 산 수용액은 인산을 30∼40중량% 함유하는 가공 방법.
- 제3항에 있어서, 에칭 공정(13)에서의 산 에칭을, 실리콘 웨이퍼에 산 에칭액을 적하하고, 상기 웨이퍼를 스핀 시킴으로써, 상기 적하한 산 에칭액을 웨이퍼 표면 전체로 확산하여 에칭하는 스핀 코트법에 의해 행하는 가공 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003411287A JP2005175106A (ja) | 2003-12-10 | 2003-12-10 | シリコンウェーハの加工方法 |
JPJP-P-2003-00411287 | 2003-12-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20060024800A true KR20060024800A (ko) | 2006-03-17 |
KR100706683B1 KR100706683B1 (ko) | 2007-04-12 |
Family
ID=34674982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020057024070A KR100706683B1 (ko) | 2003-12-10 | 2004-10-28 | 실리콘 웨이퍼의 가공 방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070267387A1 (ko) |
EP (1) | EP1693887A4 (ko) |
JP (1) | JP2005175106A (ko) |
KR (1) | KR100706683B1 (ko) |
CN (1) | CN1816901A (ko) |
WO (1) | WO2005057645A1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130079151A (ko) * | 2011-12-26 | 2013-07-10 | 후지필름 가부시키가이샤 | 실리콘 에칭 방법, 이것에 사용되는 실리콘 에칭액, 및 그 키트 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060194441A1 (en) * | 2005-02-25 | 2006-08-31 | Sakae Koyata | Method for etching a silicon wafer and method for performing differentiation between the obverse and the reverse of a silicon wafer using the same method |
JP4835069B2 (ja) * | 2005-08-17 | 2011-12-14 | 株式会社Sumco | シリコンウェーハの製造方法 |
KR100827574B1 (ko) * | 2005-08-17 | 2008-05-07 | 가부시키가이샤 사무코 | 실리콘 웨이퍼의 제조 방법 |
JP2007204286A (ja) * | 2006-01-31 | 2007-08-16 | Sumco Corp | エピタキシャルウェーハの製造方法 |
JP2007305894A (ja) * | 2006-05-15 | 2007-11-22 | Sumco Corp | ウェーハの枚葉式エッチングにおけるエッチング液の補給方法 |
DE102007063202A1 (de) * | 2007-12-19 | 2009-06-25 | Gebr. Schmid Gmbh & Co. | Verfahren und Vorrichtung zur Behandlung von Silizium-Wafern |
US8261730B2 (en) * | 2008-11-25 | 2012-09-11 | Cambridge Energy Resources Inc | In-situ wafer processing system and method |
TWI623634B (zh) * | 2011-11-08 | 2018-05-11 | 塔沙Smd公司 | 具有特殊表面處理和良好顆粒性能之矽濺鍍靶及其製造方法 |
CN103769383B (zh) * | 2012-10-23 | 2016-05-04 | 宿迁宇龙光电科技有限公司 | 一种硅原料的清洗方法 |
CN103964371B (zh) * | 2013-01-29 | 2016-07-06 | 无锡华润上华半导体有限公司 | 硅晶片的钝化层的腐蚀方法 |
JP6933187B2 (ja) * | 2018-05-01 | 2021-09-08 | 信越半導体株式会社 | 半導体シリコンウェーハの金属不純物除去方法 |
CN108748740A (zh) * | 2018-05-29 | 2018-11-06 | 顾雨彤 | 一种太阳能单晶硅片生产工艺 |
CN109285762B (zh) * | 2018-09-29 | 2021-05-04 | 中国电子科技集团公司第四十六研究所 | 一种氮化镓外延用硅片边缘加工工艺 |
CN109860040B (zh) * | 2019-01-30 | 2022-02-01 | 西安奕斯伟材料科技有限公司 | 硅蚀刻方法、硅块、直拉单晶的提拉方法及单晶 |
CN113980580B (zh) * | 2021-12-24 | 2022-04-08 | 绍兴拓邦新能源股份有限公司 | 一种单晶硅片的碱刻蚀抛光方法 |
CN115197706A (zh) * | 2022-06-27 | 2022-10-18 | 徐州鑫晶半导体科技有限公司 | 酸腐蚀液、硅片加工方法和晶圆封装方法 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5340437A (en) * | 1993-10-08 | 1994-08-23 | Memc Electronic Materials, Inc. | Process and apparatus for etching semiconductor wafers |
JP2743823B2 (ja) * | 1994-03-25 | 1998-04-22 | 日本電気株式会社 | 半導体基板のウエット処理方法 |
KR100248113B1 (ko) * | 1997-01-21 | 2000-03-15 | 이기원 | 전자 표시 장치 및 기판용 세정 및 식각 조성물 |
JPH11135474A (ja) * | 1997-10-30 | 1999-05-21 | Komatsu Electron Metals Co Ltd | 半導体鏡面ウェハおよびその製造方法 |
JP3441979B2 (ja) * | 1997-12-09 | 2003-09-02 | 信越半導体株式会社 | 半導体ウエーハの加工方法および半導体ウエーハ |
US6239039B1 (en) * | 1997-12-09 | 2001-05-29 | Shin-Etsu Handotai Co., Ltd. | Semiconductor wafers processing method and semiconductor wafers produced by the same |
TW416104B (en) * | 1998-08-28 | 2000-12-21 | Kobe Steel Ltd | Method for reclaiming wafer substrate and polishing solution composition for reclaiming wafer substrate |
JP3943869B2 (ja) * | 2000-06-29 | 2007-07-11 | 信越半導体株式会社 | 半導体ウエーハの加工方法および半導体ウエーハ |
WO2002001616A1 (fr) * | 2000-06-29 | 2002-01-03 | Shin-Etsu Handotai Co., Ltd. | Procede de traitement d'une plaquette de semi-conducteur et plaquette de semi-conducteur |
TW511180B (en) * | 2000-07-31 | 2002-11-21 | Mitsubishi Chem Corp | Mixed acid solution in etching process, process for producing the same, etching process using the same and process for producing semiconductor device |
JP2003100701A (ja) * | 2001-09-27 | 2003-04-04 | Sumitomo Mitsubishi Silicon Corp | シリコンウェーハのエッチング方法及びこの方法を用いたシリコンウェーハの表裏面差別化方法 |
JP2003203890A (ja) * | 2002-01-07 | 2003-07-18 | Sumitomo Mitsubishi Silicon Corp | シリコンウェーハの製造方法 |
JP4192482B2 (ja) * | 2002-03-22 | 2008-12-10 | 株式会社Sumco | シリコンウェーハの製造方法 |
JP4273943B2 (ja) * | 2003-12-01 | 2009-06-03 | 株式会社Sumco | シリコンウェーハの製造方法 |
EP1699075B1 (en) * | 2003-12-05 | 2012-11-21 | SUMCO Corporation | Method for manufacturing single-side mirror surface wafer |
DE102004054566B4 (de) * | 2004-11-11 | 2008-04-30 | Siltronic Ag | Verfahren und Vorrichtung zum Einebnen einer Halbleiterscheibe sowie Halbleiterscheibe mit verbesserter Ebenheit |
DE102004062355A1 (de) * | 2004-12-23 | 2006-07-06 | Siltronic Ag | Verfahren zum Behandeln einer Halbleiterscheibe mit einem gasförmigen Medium sowie damit behandelte Halbleiterscheibe |
US20060194441A1 (en) * | 2005-02-25 | 2006-08-31 | Sakae Koyata | Method for etching a silicon wafer and method for performing differentiation between the obverse and the reverse of a silicon wafer using the same method |
-
2003
- 2003-12-10 JP JP2003411287A patent/JP2005175106A/ja active Pending
-
2004
- 2004-10-28 EP EP04793107A patent/EP1693887A4/en not_active Withdrawn
- 2004-10-28 CN CNA2004800185750A patent/CN1816901A/zh active Pending
- 2004-10-28 US US10/561,821 patent/US20070267387A1/en not_active Abandoned
- 2004-10-28 KR KR1020057024070A patent/KR100706683B1/ko active IP Right Grant
- 2004-10-28 WO PCT/JP2004/015999 patent/WO2005057645A1/ja active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20130079151A (ko) * | 2011-12-26 | 2013-07-10 | 후지필름 가부시키가이샤 | 실리콘 에칭 방법, 이것에 사용되는 실리콘 에칭액, 및 그 키트 |
Also Published As
Publication number | Publication date |
---|---|
KR100706683B1 (ko) | 2007-04-12 |
EP1693887A1 (en) | 2006-08-23 |
JP2005175106A (ja) | 2005-06-30 |
US20070267387A1 (en) | 2007-11-22 |
EP1693887A4 (en) | 2008-07-30 |
WO2005057645A1 (ja) | 2005-06-23 |
CN1816901A (zh) | 2006-08-09 |
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