KR20200021518A - 실리콘 웨이퍼의 양면 연마 방법 - Google Patents
실리콘 웨이퍼의 양면 연마 방법 Download PDFInfo
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- KR20200021518A KR20200021518A KR1020207002188A KR20207002188A KR20200021518A KR 20200021518 A KR20200021518 A KR 20200021518A KR 1020207002188 A KR1020207002188 A KR 1020207002188A KR 20207002188 A KR20207002188 A KR 20207002188A KR 20200021518 A KR20200021518 A KR 20200021518A
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- 238000005498 polishing Methods 0.000 title claims abstract description 373
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 79
- 239000010703 silicon Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 124
- 238000007517 polishing process Methods 0.000 claims abstract description 44
- 239000006061 abrasive grain Substances 0.000 claims abstract description 37
- 239000004744 fabric Substances 0.000 claims abstract description 34
- 239000003513 alkali Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 4
- 229920003169 water-soluble polymer Polymers 0.000 abstract description 7
- 235000012431 wafers Nutrition 0.000 description 95
- 238000011084 recovery Methods 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 9
- 239000000243 solution Substances 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 4
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000004438 BET method Methods 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- 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
-
- 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
- H01L21/02024—Mirror polishing
-
- 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
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
-
- 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
- H01L21/02016—Backside treatment
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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
-
- 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
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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
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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
- H01L21/30625—With simultaneous mechanical treatment, e.g. mechanico-chemical polishing
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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
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/32115—Planarisation
- H01L21/3212—Planarisation by chemical mechanical polishing [CMP]
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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)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
Description
도 2는 비교예 1에 의한 실리콘 웨이퍼의 양면 연마 방법의 플로우도이다.
도 3은 비교예 2에 의한 실리콘 웨이퍼의 양면 연마 방법의 플로우도이다.
도 4는 본 발명의 일 실시 형태에 의한 실리콘 웨이퍼의 양면 연마 방법에 있어서, 실리콘 웨이퍼에 가하는 면압력의 전환, 슬러리 공급의 전환 및, 사용이 완료된 연마액의 처리 방법의 전환을 설명하는 도면이다.
도 5는 본 발명의 일 실시 형태에 의한 실리콘 웨이퍼의 양면 연마 방법에 있어서 사용되는 양면 연마 장치(100)의 개략도이다.
10 : 캐리어 플레이트
12 : 보유지지 구멍
14 : 상 정반
16 : 하 정반
18, 20 : 연마포
22 : 선 기어
24 : 인터널 기어
26 : 연마액 공급 라인
28 : 전환 밸브
30 : 제1 연마액용 공급 라인
32 : 제1 연마액용 공급 탱크
34 : 제2 연마액용 공급 라인
36 : 제2 연마액용 공급 탱크
38 : 사용이 완료된 연마액회수 라인
40 : 전환 밸브
42 : 회수 탱크
44 : 재이용 라인
46 : 폐액 라인
W : 실리콘 웨이퍼
Claims (5)
- 실리콘 웨이퍼를 보유지지(保持)하는 하나 이상의 보유지지 구멍을 갖는 캐리어 플레이트와, 상기 캐리어 플레이트를 사이에 두고 대향하여 위치하고, 표면에 연마포가 형성된 상 정반 및 하 정반을 갖는 양면 연마 장치를 이용하여, 상기 보유지지 구멍 내에 장전한 실리콘 웨이퍼의 표면 및 이면에, 각각 상기 상 정반 및 상기 하 정반의 연마포를 접촉시킨 상태로, 상기 상 정반 및 상기 하 정반과 상기 캐리어 플레이트를 상대 회전시킴으로써, 상기 실리콘 웨이퍼의 표면 및 이면을 동시에 연마하는 실리콘 웨이퍼의 양면 연마 방법으로서,
지립을 포함하는 알칼리 수용액으로 이루어지는 제1 연마액을 상기 연마포에 공급하면서 양면 연마를 행하는 제1 연마 공정과,
상기 제1 연마 공정 후, 상기 실리콘 웨이퍼의 표면 및 이면에, 각각 상기 상 정반 및 상기 하 정반의 연마포를 접촉시킨 채로, 또한, 상기 상 정반 및 상기 하 정반의 회전을 계속한 상태로, 상기 제1 연마액의 공급을 정지함과 함께, 지립을 포함하지 않고 수용성 고분자를 포함하는 알칼리 수용액으로 이루어지는 제2 연마액의 공급을 개시하는 연마액 전환 공정과,
상기 연마액 전환 공정 후, 상기 제2 연마액을 상기 연마포에 공급하면서 양면 연마를 행하는 제2 연마 공정
을 연속하여 갖는 것을 특징으로 하는 실리콘 웨이퍼의 양면 연마 방법. - 제1항에 있어서,
상기 상 정반 및 상기 하 정반이 상기 실리콘 웨이퍼의 표면 및 이면에 가하는 면압력에 관하여,
상기 제1 연마 공정에서는, 제1 면압력으로 양면 연마를 행하고, 그의 종기(終期)에 있어서 상기 면압력을 저하시켜, 종료 시에 상기 제1 면압력보다도 낮은 제2 면압력으로 하고,
상기 제2 연마 공정에서는 상기 제2 면압력으로 양면 연마를 행하는, 실리콘 웨이퍼의 양면 연마 방법. - 제2항에 있어서,
상기 제1 면압력의 값에 대하여 상기 제2 면압력의 값이 5%∼40% 작은, 실리콘 웨이퍼의 양면 연마 방법. - 제1항 내지 제3항 중 어느 한 항에 있어서,
상기 제1 연마 공정에서는, 상기 제1 및 제2 연마 공정에서의 합계 연마량의 80%∼99.5%의 연마량의 양면 연마를 행하고,
상기 제2 연마 공정에서는, 편면당 0.05㎛∼0.5㎛의 연마량의 양면 연마를 행하는, 실리콘 웨이퍼의 양면 연마 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 제1 연마 공정에서는, 사용이 완료된 제1 연마액을 회수한 후, 상기 연마포에 재차 공급하고,
상기 제2 연마 공정에서는, 사용이 완료된 연마액을 회수한 후, 폐기하는, 실리콘 웨이퍼의 양면 연마 방법.
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PCT/JP2017/031496 WO2019043895A1 (ja) | 2017-08-31 | 2017-08-31 | シリコンウェーハの両面研磨方法 |
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US (1) | US11170988B2 (ko) |
JP (1) | JP6747599B2 (ko) |
KR (1) | KR102287116B1 (ko) |
CN (1) | CN111095491B (ko) |
DE (1) | DE112017007968T5 (ko) |
TW (1) | TWI672190B (ko) |
WO (1) | WO2019043895A1 (ko) |
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US11890719B2 (en) * | 2017-10-17 | 2024-02-06 | Sumco Corporation | Method of polishing silicon wafer |
TWI722478B (zh) * | 2019-07-05 | 2021-03-21 | 新代科技股份有限公司 | 具有砂輪之磨床及其砂輪加工地圖的最佳化方法 |
JP2023167038A (ja) * | 2022-05-11 | 2023-11-24 | 信越半導体株式会社 | 両面研磨方法 |
JP7464088B2 (ja) | 2022-08-31 | 2024-04-09 | 株式会社Sumco | 半導体ウェーハの両面研磨方法、研磨ウェーハの製造方法、及び半導体ウェーハの両面研磨装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5754659B2 (ko) | 1978-12-30 | 1982-11-19 | ||
JP2011042536A (ja) * | 2009-08-21 | 2011-03-03 | Sumco Corp | エピタキシャルシリコンウェーハの製造方法 |
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US5010692A (en) * | 1987-12-22 | 1991-04-30 | Sintobrator, Ltd. | Polishing device |
JP2001001242A (ja) * | 1999-06-16 | 2001-01-09 | Daido Steel Co Ltd | ガラス基板の研磨方法 |
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