JP2019030956A - 制御された滞留cmp研磨法 - Google Patents
制御された滞留cmp研磨法 Download PDFInfo
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- 238000005498 polishing Methods 0.000 title claims abstract description 527
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 101
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000004065 semiconductor Substances 0.000 claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- 235000012431 wafers Nutrition 0.000 claims description 127
- 229920000642 polymer Polymers 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000007517 polishing process Methods 0.000 claims 2
- 230000007423 decrease Effects 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 description 30
- 239000002002 slurry Substances 0.000 description 29
- 239000011295 pitch Substances 0.000 description 25
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- 150000001412 amines Chemical class 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
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- 238000010408 sweeping Methods 0.000 description 2
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- 229910052802 copper Inorganic materials 0.000 description 1
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- 230000009977 dual effect Effects 0.000 description 1
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- 239000012212 insulator Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000011176 pooling Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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- H—ELECTRICITY
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- 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
- H01L21/3043—Making grooves, e.g. cutting
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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
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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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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- 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
-
- 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
-
- 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
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/26—Lapping pads for working plane surfaces characterised by the shape of the lapping pad surface, e.g. grooved
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02002—Preparing wafers
- H01L21/02005—Preparing bulk and homogeneous wafers
- H01L21/0203—Making porous regions on the surface
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- 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
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- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- 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
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
- H01L21/31053—Planarisation of the insulating layers involving a dielectric removal step
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Abstract
【解決手段】研磨パッドは、研磨層を研磨領域に分離する上記研磨層内に放射状供給溝を有している。上記研磨領域は、2つの隣接する放射状供給溝によって画定された扇形である。放射状供給溝は、中心の近傍の位置から外縁部の近傍の位置まで延在する。各研磨領域は、一対の隣接する放射状供給溝を接続している一連の偏倚された溝を含んでいる。上記研磨パッドの回転に関し、反時計回り、もしくは時計回りの複数の回転方向を選択することにより、回転する研磨パッドに対して上記ウェーハを押圧し且つ回転させることで、ウェーハ下の研磨流体の滞留時間を増加させる、又は減少させることができ、研磨の調整を行うことができる。
【選択図】なし
Description
本出願は、2017年6月16日に出願され現在係属中の米国特許出願第15/624、943号(これは、2017年6月14日に出願され現在係属中の米国特許出願第15/623、204号の一部継続出願である)の一部継続出願である。
Claims (10)
- 半導体基板、光学基板、及び磁性基板の少なくとも1つのウェーハを研磨又は平坦化する方法であって、前記方法は、
研磨パッドを回転させることであり、
前記回転する研磨パッドが、ポリマーマトリックスと厚さとを有する研磨層を有し、
前記研磨層が、中心、外縁部、および前記研磨パッドの前記中心から前記外縁部へ延在する半径を含む;研磨層の放射状供給溝が、前記研磨層を複数の研磨領域に分割し、
前記研磨領域が、2つの隣接する放射状供給溝によって画定された扇形であり、
前記放射状供給溝が、少なくとも前記中心に近接する位置から前記外縁部に近接する位置まで延在し;且つ、
各研磨領域が、隣接する一対の放射状供給溝を接続する一連の偏倚された溝を含み、
前記偏倚された溝の大部分が、前記中心に向かう内側への偏倚、又は、前記研磨パッドの前記外縁部に向かう外側への偏倚を有しており、
前記内側へ、及び、外側へ偏倚された溝の両方共に、研磨流体を前記研磨パッドの前記外縁部の方へ、且つ、内側への偏倚、又は、外側への偏倚、及び、前記研磨パッドの回転方向に依存して、前記ウェーハの方へ、又は、前記ウェーハから離れるように移動させる、ことと;
研磨流体を、前記回転する研磨パッド上に、且つ、前記放射状供給溝、及び、前記一連の偏倚された溝に分配すること;及び、
i)前記研磨パッドの反時計回りの回転中、前記回転する研磨パッドの中心に向かう内側への偏倚の一連の偏倚された溝に対して、前記ウェーハの下の研磨流体の滞留時間を増加させること、若しくは、
前記回転する研磨パッドの前記外縁部に向かう外側への偏倚の一連の偏倚された溝に対して、前記ウェーハの下の研磨流体の滞留時間を減少させること、
又は、
ii)前記研磨パッドの時計回りの回転中、前記回転する研磨パッドの前記中心に向かう内側への偏倚の一連の偏倚された溝に対して、前記ウェーハの下の研磨流体の滞留時間を減少させること、若しくは、
前記回転する研磨パッドの前記外縁部に向かう外側への偏倚の一連の偏倚された溝に対して、前記ウェーハの下の研磨流体の滞留時間を増加させること、
のどちらかを選択することによって、研磨を調整するように、前記研磨パッドの複数の回転で前記回転する研磨パッドに対して、前記ウェーハを押圧し且つ回転させること、
を包含している、
上記方法。 - 前記ウェーハは、前記研磨パッドの前記中心から前記研磨パッドの前記外縁部の近傍までの半径に沿った位置に置かれ続け、その後、前記研磨パッドの前記中心に置かれ続け、前記ウェーハの少なくとも1構成要素の除去速度を増加させる、請求項1に記載の方法。
- 前記研磨パッドを回転させることにより、前記ウェーハの下に新たな研磨流体を流すことを可能にするために、使用済みの研磨流体を、前記一連の偏倚された溝の一部分を通して、前記研磨パッドの前記外縁部を越えて送る、請求項1に記載の方法。
- 前記一連の偏倚された溝は、前記ウェーハの下の前記研磨流体の滞留時間を増加させるような平行な溝の形状となる、請求項1に記載の方法。
- 前記一連の偏倚された溝は、前記ウェーハの下の前記研磨流体の滞留時間を減少させるような平行な溝の形状となる、請求項1に記載の方法。
- 半導体基板、光学基板、及び磁性基板の少なくとも1つのウェーハを研磨又は平坦化する方法であって、前記方法は、
研磨パッドを回転させることであり、
前記回転する研磨パッドが、ポリマーマトリックスと厚さとを有する研磨層を有し、
前記研磨層が、中心、外縁部、および前記研磨パッドの前記中心から前記外縁部へ延在する半径を含む;研磨層の放射状供給溝が、前記研磨層を複数の研磨領域に分割し、
前記研磨領域が、2つの隣接する放射状供給溝によって画定された扇形であり、前記研磨領域が、二等分線で二等分され、
前記放射状供給溝が、少なくとも前記中心に近接する位置から前記外縁部に近接する位置まで延在し;且つ、
各研磨領域が、隣接する一対の放射状供給溝を接続する一連の偏倚された溝を含み、
前記偏倚された溝の大部分が、前記二等分線から20°〜85°の角度で前記研磨パッドの中心に向かう内側への偏倚、又は、前記二等分線から95°〜160°の角度で前記研磨パッドの外縁部に向かう外側への偏倚を有しており、
前記内側へ、及び、外側へ偏倚された溝の両方共に、研磨流体を前記研磨パッドの外縁部の方へ、且つ、内側への偏倚、又は、外側への偏倚、及び、前記研磨パッドの回転方向に依存して、前記ウェーハの方へ、又は、前記ウェーハから離れるように移動させる、ことと;
研磨流体を、前記回転する研磨パッド上に且つ前記放射状供給溝及び前記一連の偏倚された溝に分配すること;及び、
i)前記研磨パッドの反時計回りの回転中、前記回転する研磨パッドの中心に向かう内側への偏倚の一連の偏倚された溝に対して、前記ウェーハの下の研磨流体の滞留時間を増加させること、若しくは、
前記回転する研磨パッドの前記外縁部に向かう外側への偏倚の一連の偏倚された溝に対して、前記ウェーハの下の研磨流体の滞留時間を減少させること、
又は、
ii)前記研磨パッドの時計回りの回転中、前記回転する研磨パッドの前記中心に向かう内側への偏倚の一連の偏倚された溝に対して、前記ウェーハの下の研磨流体の滞留時間を減少させること、若しくは、
前記回転する研磨パッドの前記外縁部に向かう外側への偏倚の一連の偏倚された溝に対して、前記ウェーハの下の研磨流体の滞留時間を増加させること、
のどちらかを選択することによって、研磨を調整するように、前記研磨パッドの複数の回転で前記回転する研磨パッドに対して、前記ウェーハを押圧し且つ回転させること、
を包含している、
上記方法。 - 前記ウェーハは、前記研磨パッドの前記中心から前記研磨パッドの前記外縁部の近傍までの半径に沿った位置に置かれ続け、その後、前記研磨パッドの前記中心に置かれ続け、前記ウェーハの少なくとも1構成要素の除去速度を増加させる、請求項6に記載の方法。
- 前記研磨パッドを回転させることにより、前記ウェーハの下に新たな研磨流体の流れを可能にするために、使用済みの研磨流体を、前記一連の偏倚された溝の一部分を通し前記研磨パッドの前記外縁部を越えて送る、請求項6に記載の方法。
- 前記一連の偏倚された溝は、前記ウェーハの下の前記研磨流体の滞留時間を増加させるような平行な溝の形状となる、請求項6に記載の方法。
- 前記一連の偏倚された溝は、前記ウェーハの下の前記研磨流体の滞留時間を減少させるような平行な溝の形状となる、請求項6に記載の方法。
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201715623204A | 2017-06-14 | 2017-06-14 | |
US15/623,204 | 2017-06-14 | ||
US201715624943A | 2017-06-16 | 2017-06-16 | |
US15/624,943 | 2017-06-16 | ||
US15/725,936 | 2017-10-05 | ||
US15/725,936 US10861702B2 (en) | 2017-06-14 | 2017-10-05 | Controlled residence CMP polishing method |
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KR20210116759A (ko) | 2020-03-13 | 2021-09-28 | 삼성전자주식회사 | Cmp 패드 및 이를 구비하는 화학적 기계적 연마 장치 |
JP7532176B2 (ja) | 2020-05-08 | 2024-08-13 | キヤノン株式会社 | 光学式エンコーダ及び制御装置 |
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- 2018-06-11 DE DE102018004619.3A patent/DE102018004619A1/de active Pending
- 2018-06-11 JP JP2018111063A patent/JP7181009B2/ja active Active
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TWI762639B (zh) | 2022-05-01 |
US20180366332A1 (en) | 2018-12-20 |
FR3067628B1 (fr) | 2022-04-01 |
JP7181009B2 (ja) | 2022-11-30 |
SG10201804562RA (en) | 2019-01-30 |
DE102018004619A1 (de) | 2018-12-20 |
KR102660719B1 (ko) | 2024-04-26 |
FR3067628A1 (fr) | 2018-12-21 |
KR20180136374A (ko) | 2018-12-24 |
CN109079586A (zh) | 2018-12-25 |
TW201905998A (zh) | 2019-02-01 |
US10861702B2 (en) | 2020-12-08 |
CN109079586B (zh) | 2021-05-14 |
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