JP7123550B2 - 表面平滑化方法 - Google Patents
表面平滑化方法 Download PDFInfo
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- JP7123550B2 JP7123550B2 JP2017232589A JP2017232589A JP7123550B2 JP 7123550 B2 JP7123550 B2 JP 7123550B2 JP 2017232589 A JP2017232589 A JP 2017232589A JP 2017232589 A JP2017232589 A JP 2017232589A JP 7123550 B2 JP7123550 B2 JP 7123550B2
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- 238000000034 method Methods 0.000 title claims description 109
- 238000009499 grossing Methods 0.000 title claims description 25
- 230000008569 process Effects 0.000 claims description 74
- 238000005530 etching Methods 0.000 claims description 63
- 229910052710 silicon Inorganic materials 0.000 claims description 45
- 239000010703 silicon Substances 0.000 claims description 45
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 44
- 238000001020 plasma etching Methods 0.000 claims description 44
- 239000000758 substrate Substances 0.000 claims description 42
- 239000007789 gas Substances 0.000 claims description 33
- 239000002243 precursor Substances 0.000 claims description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- 230000000737 periodic effect Effects 0.000 claims description 6
- 238000012876 topography Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 230000001747 exhibiting effect Effects 0.000 claims description 2
- 235000012431 wafers Nutrition 0.000 description 26
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000007689 inspection Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 229910052756 noble gas Inorganic materials 0.000 description 3
- 238000007788 roughening Methods 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000000879 optical micrograph Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241001596784 Pegasus Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000009304 pastoral farming Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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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
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
-
- 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
-
- 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
- H01L21/3065—Plasma etching; Reactive-ion 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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67063—Apparatus for fluid treatment for etching
- H01L21/67069—Apparatus for fluid treatment for etching for drying 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76898—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics formed through a semiconductor substrate
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Plasma & Fusion (AREA)
- Drying Of Semiconductors (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Description
シリコン基板を研削して随伴する粗さを有する裏面を残している、該裏面を有するシリコン基板を提供すること、及び、
プラズマエッチングプロセスを用いて前記シリコン基板の前記裏面を平滑化させること、
の工程を含み、
前記プラズマエッチングプロセスは、
前記裏面から起立している複数の突起物を形成する第一のプラズマエッチング工程を行うこと、及び、
前記突起物を少なくとも部分的にエッチングして、鏡面反射を示す平滑化裏面を提供する第二のプラズマエッチング工程を行うこと、
の工程を含む、シリコン基板の表面を平滑化する方法が提供される。
ポリッシュエッチング工程はシリコン基板に埋め込まれたビアなどの特徴部を露出させるための本願出願人の米国特許出願第2015/0287637号に記載された方法と同様であってよく、又は、同一であってもよい。米国特許第2015/0287637号明細書の全内容を参照により本明細書に取り込む。
第一のプラズマエッチング工程及び第二のプラズマエッチング工程を行うに適したプラズマを生成するための1以上のプラズマ生成デバイス、及び、
本発明の第一の態様による方法を行うように該装置を制御するように構成されたコントローラを含む。
Claims (19)
- シリコン基板を研削して、随伴する粗さを有する裏面を残している、該裏面を有するシリコン基板を提供すること、及び、
プラズマエッチングプロセスを用いて前記シリコン基板の前記裏面を平滑化させること、
の工程を含み、
前記プラズマエッチングプロセスは、
前記裏面から起立している複数の突起物を形成する第一のプラズマエッチング工程を行うこと、及び、
前記突起物を少なくとも部分的にエッチングして、鏡面反射を示す平滑化裏面を提供する第二のプラズマエッチング工程を行うこと、
の工程を含み、
前記第一プラズマエッチング工程は、酸素及び少なくとも1種のエッチャント前駆体ガスを含むガス混合物を使用し、100~500mTorrの範囲の第一圧力下で、RFバイアス電力を使用せず又は100W未満のRFバイアス電力を使用する条件下で行われ、
前記第二プラズマエッチング工程は、酸素が実質的に存在しない状態で、前記第一圧力より低い圧力下で、RFバイアス電力が500Wを超える条件下で行われる、
シリコン基板の表面を平滑化する方法。 - 前記第一のプラズマエッチング工程及び第二のプラズマエッチング工程は交互に繰り返される、請求項1記載の方法。
- 前記第一のプラズマエッチング工程は等方性エッチングプロセスである、請求項1又は2記載の方法。
- 前記第一のプラズマエッチング工程は関連する流速を有するエッチャント前駆体ガス及び酸素の流れを使用し、酸素の流速はエッチャント前駆体ガスの流速よりも大きい、請求項1~3のいずれか1項記載の方法。
- 酸素の流速はエッチャント前駆体ガスの流速の少なくとも3倍である、請求項4記載の方法。
- 前記第一のプラズマエッチング工程はフッ素含有エッチャント前駆体ガスを使用する、請求項1~5のいずれか1項記載の方法。
- 前記フッ素含有エッチャント前駆体ガスはSF6である、請求項6記載の方法。
- 前記フッ素含有エッチャント前駆体ガスはCF4である、請求項6記載の方法。
- 前記第一のプラズマエッチング工程は前記突起物をマスキングするように作用する複数の堆積物を前記裏面上に生成させる、請求項1~8のいずれか1項記載の方法。
- 前記第二のプラズマエッチング工程はフッ素含有エッチャント前駆体ガスを使用する、請求項1~9のいずれか1項記載の方法。
- 前記フッ素含有エッチャント前駆体ガスはSF6又はCF4である、請求項10記載の方法。
- 前記プラズマエッチングプロセスは前記基板の厚さを2.5ミクロン以下だけ低減させる、請求項1~11のいずれか1項記載の方法。
- 前記プラズマエッチングプロセスは前記基板の厚さの低減をもたらし、前記第一のプラズマエッチング工程は前記低減の20%未満を占める、請求項1~12のいずれか1項記載の方法。
- 前記平滑化の工程の前に、前記裏面は高さ変動が100nm以下であるトポグラフィを有する、請求項1~13のいずれか1項記載の方法。
- 前記平滑化の工程は、裏面が25nm以下の高さ変動を含むトポグラフィを有するように行われる、請求項1~14のいずれか1項記載の方法。
- 提供される前記シリコン基板は周期的なスクラッチパターンを前記裏面上に有し、前記平滑化の工程は前記周期的なスクラッチパターンを除去するように行われる、請求項1~15のいずれか1項記載の方法。
- 前記基板は埋め込み特徴部を含み、前記方法は、前記平滑化の工程の後に前記埋め込み特徴部露出プロセスを行う工程をさらに含み、前記平滑化の工程及び前記埋め込み特徴部露出プロセスの工程は共通チャンバ内で逐次的に行われる、請求項1~16のいずれか1項記載の方法。
- 前記第一のプラズマエッチング工程は2つ以上の異なる第一のエッチングを含み、該第一のエッチングの各々は異なる関連エッチング条件を有し、及び/又は、前記第二のプラズマエッチング工程は2つ以上の異なる第二のエッチングを含み、該第二のエッチングの各々は異なる関連エッチング条件を有する、請求項1~17のいずれか1項記載の方法。
- 請求項1記載の方法を用いてシリコン基板の表面を平滑化するための装置であって、該装置は、
前記プラズマエッチングプロセスを行うチャンバ、
前記第一のプラズマエッチング工程及び第二のプラズマエッチング工程を行うのに適するプラズマを生成するための1つ以上のプラズマ生成デバイス、及び、
請求項1記載の方法を行うように前記装置を制御するように構成されたコントローラ、
を含む、装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1620680.7A GB201620680D0 (en) | 2016-12-05 | 2016-12-05 | Method of smoothing a surface |
GB1620680.7 | 2016-12-05 |
Publications (2)
Publication Number | Publication Date |
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JP2018110217A JP2018110217A (ja) | 2018-07-12 |
JP7123550B2 true JP7123550B2 (ja) | 2022-08-23 |
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JP2017232589A Active JP7123550B2 (ja) | 2016-12-05 | 2017-12-04 | 表面平滑化方法 |
Country Status (7)
Country | Link |
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US (1) | US20180158689A1 (ja) |
EP (1) | EP3331000B1 (ja) |
JP (1) | JP7123550B2 (ja) |
KR (1) | KR102517018B1 (ja) |
CN (1) | CN108231578B (ja) |
GB (1) | GB201620680D0 (ja) |
TW (1) | TWI755455B (ja) |
Families Citing this family (13)
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US11355394B2 (en) * | 2018-09-13 | 2022-06-07 | Applied Materials, Inc. | Wafer dicing using hybrid laser scribing and plasma etch approach with intermediate breakthrough treatment |
US11731231B2 (en) | 2019-01-28 | 2023-08-22 | Micron Technology, Inc. | Polishing system, polishing pad, and related methods |
US11282815B2 (en) | 2020-01-14 | 2022-03-22 | Micron Technology, Inc. | Methods of forming microelectronic devices, and related microelectronic devices and electronic systems |
US11380669B2 (en) | 2020-06-18 | 2022-07-05 | Micron Technology, Inc. | Methods of forming microelectronic devices |
US11705367B2 (en) | 2020-06-18 | 2023-07-18 | Micron Technology, Inc. | Methods of forming microelectronic devices, and related microelectronic devices, memory devices, electronic systems, and additional methods |
US11335602B2 (en) | 2020-06-18 | 2022-05-17 | Micron Technology, Inc. | Methods of forming microelectronic devices, and related microelectronic devices and electronic systems |
US11699652B2 (en) | 2020-06-18 | 2023-07-11 | Micron Technology, Inc. | Microelectronic devices and electronic systems |
US11557569B2 (en) | 2020-06-18 | 2023-01-17 | Micron Technology, Inc. | Microelectronic devices including source structures overlying stack structures, and related electronic systems |
US11563018B2 (en) | 2020-06-18 | 2023-01-24 | Micron Technology, Inc. | Microelectronic devices, and related methods, memory devices, and electronic systems |
US11825658B2 (en) | 2020-08-24 | 2023-11-21 | Micron Technology, Inc. | Methods of forming microelectronic devices and memory devices |
US11417676B2 (en) | 2020-08-24 | 2022-08-16 | Micron Technology, Inc. | Methods of forming microelectronic devices and memory devices, and related microelectronic devices, memory devices, and electronic systems |
US11751408B2 (en) | 2021-02-02 | 2023-09-05 | Micron Technology, Inc. | Methods of forming microelectronic devices, and related microelectronic devices, memory devices, and electronic systems |
EP4202979A1 (en) * | 2021-12-22 | 2023-06-28 | SPTS Technologies Limited | Method of reducing surface roughness |
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2016
- 2016-12-05 GB GBGB1620680.7A patent/GB201620680D0/en not_active Ceased
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2017
- 2017-12-04 EP EP17275192.7A patent/EP3331000B1/en active Active
- 2017-12-04 TW TW106142394A patent/TWI755455B/zh active
- 2017-12-04 JP JP2017232589A patent/JP7123550B2/ja active Active
- 2017-12-04 US US15/830,969 patent/US20180158689A1/en not_active Abandoned
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012521078A (ja) | 2009-03-17 | 2012-09-10 | アイメック | プラズマテクスチャ方法 |
JP2012182299A (ja) | 2011-03-01 | 2012-09-20 | Hitachi Chem Co Ltd | 半導体基板用研磨液及び半導体基板の研磨方法 |
JP2015201643A (ja) | 2014-04-04 | 2015-11-12 | エスピーティーエス テクノロジーズ リミティド | エッチング方法 |
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US20180158689A1 (en) | 2018-06-07 |
EP3331000B1 (en) | 2021-11-24 |
CN108231578B (zh) | 2023-05-12 |
GB201620680D0 (en) | 2017-01-18 |
JP2018110217A (ja) | 2018-07-12 |
KR20180064312A (ko) | 2018-06-14 |
TWI755455B (zh) | 2022-02-21 |
EP3331000A1 (en) | 2018-06-06 |
CN108231578A (zh) | 2018-06-29 |
TW201834059A (zh) | 2018-09-16 |
KR102517018B1 (ko) | 2023-03-31 |
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