JP2022176662A - 基板処理方法、及び基板処理装置 - Google Patents
基板処理方法、及び基板処理装置 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 299
- 238000003672 processing method Methods 0.000 title claims abstract description 25
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 354
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 320
- 239000010703 silicon Substances 0.000 claims abstract description 320
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 320
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 177
- 238000005530 etching Methods 0.000 claims abstract description 122
- 239000007788 liquid Substances 0.000 claims abstract description 47
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 34
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 25
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000007246 mechanism Effects 0.000 claims description 68
- 230000008859 change Effects 0.000 claims description 30
- 239000004065 semiconductor Substances 0.000 claims description 23
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 17
- 229960004838 phosphoric acid Drugs 0.000 description 160
- 235000011007 phosphoric acid Nutrition 0.000 description 160
- 239000010408 film Substances 0.000 description 53
- 238000010586 diagram Methods 0.000 description 28
- 239000003085 diluting agent Substances 0.000 description 25
- 239000007789 gas Substances 0.000 description 20
- 230000008569 process Effects 0.000 description 14
- 239000000243 solution Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000003028 elevating effect Effects 0.000 description 7
- 230000005587 bubbling Effects 0.000 description 6
- 230000007704 transition Effects 0.000 description 6
- 101000741271 Sorghum bicolor Phosphoenolpyruvate carboxylase 1 Proteins 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 102100031476 Cytochrome P450 1A1 Human genes 0.000 description 3
- 102100026533 Cytochrome P450 1A2 Human genes 0.000 description 3
- 101000941690 Homo sapiens Cytochrome P450 1A1 Proteins 0.000 description 3
- 101000855342 Homo sapiens Cytochrome P450 1A2 Proteins 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 101710201952 Photosystem II 22 kDa protein, chloroplastic Proteins 0.000 description 2
- 102100021941 Sorcin Human genes 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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Abstract
Description
以下、図1~図16を参照して本発明の実施形態1を説明する。まず、図1(a)及び図1(b)を参照して本実施形態の基板処理装置100を説明する。本実施形態の基板処理装置100はバッチ式のエッチング装置である。したがって、基板処理装置100は、複数の基板Wを一括してエッチングする。例えば、基板処理装置100は、ロット単位で複数の基板Wをエッチングする。1ロットは、例えば25枚の基板Wからなる。
続いて図17を参照して本発明の実施形態2を説明する。但し、実施形態1と異なる事項を説明し、実施形態1と同じ事項についての説明は割愛する。実施形態2は、基板処理装置100がシリコン濃度計86を備える点で実施形態1と異なる。
続いて図18~図24を参照して本発明の実施形態3を説明する。但し、実施形態1、2と異なる事項を説明し、実施形態1、2と同じ事項についての説明は割愛する。実施形態3は、基板処理装置100がシリコン供給機構45を備える点で実施形態1、2と異なる。
4 :燐酸補充機構
41 :燐酸供給ノズル
42 :燐酸供給配管
43 :開閉弁、第1開閉弁
44 :流量計
45 :シリコン供給機構
86 :シリコン濃度計
100 :基板処理装置
110 :制御装置
111 :制御部
112 :記憶部
113 :入力部
451 :シリコン供給配管
452 :開閉弁、第2開閉弁
453 :流量計
E :エッチング液
G :隙間
M :積層構造
Ma :シリコン酸化膜
Mb :シリコン窒化膜
W :基板
Claims (14)
- 交互に積層されたシリコン酸化膜とシリコン窒化膜とを有する基板を、処理槽において、燐酸を含有するエッチング液でエッチングする基板処理方法であって、
前記エッチング液中に前記基板を浸漬させる工程と、
前記基板のエッチング中に前記処理槽内の前記エッチング液に燐酸を補充して、前記エッチング液のシリコン濃度を変化させる工程と
を包含する、基板処理方法。 - 前記エッチング液のシリコン濃度を変化させる工程において、前記基板を用いて製造される半導体デバイスの構造に応じて設定された燐酸の補充流量の設定値に基づいて、前記エッチング液に補充する前記燐酸の補充流量が制御される、請求項1に記載の基板処理方法。
- 前記エッチング液のシリコン濃度を変化させる工程において、前記基板のエッチング中に計測される前記エッチング液のシリコン濃度に基づいて、前記燐酸の補充流量が制御される、請求項1に記載の基板処理方法。
- 前記エッチング液のシリコン濃度を変化させる工程において、前記エッチング液に補充する前記燐酸に、シリコンを含有するシリコン含有液を供給する、請求項1に記載の基板処理方法。
- 前記エッチング液のシリコン濃度を変化させる工程において、前記基板を用いて製造される半導体デバイスの構造に応じて設定されたシリコン含有液の供給流量の設定値に基づいて、前記燐酸に供給する前記シリコン含有液の供給流量が制御される、請求項4に記載の基板処理方法。
- 前記エッチング液のシリコン濃度を変化させる工程において、前記基板のエッチング中に計測される前記エッチング液のシリコン濃度に基づいて、前記シリコン含有液の供給流量が制御される、請求項4に記載の基板処理方法。
- 前記半導体デバイスの前記構造は、前記半導体デバイスにおいて積層方向に隣り合う前記シリコン酸化膜間の隙間の大きさを示す、請求項2又は請求項5に記載の基板処理方法。
- 交互に積層されたシリコン酸化膜とシリコン窒化膜とを有する基板を、燐酸を含有するエッチング液でエッチングする基板処理装置であって、
前記エッチング液を貯留する処理槽と、
前記処理槽に貯留されている前記エッチング液内で前記基板を保持する基板保持部と、
前記処理槽内の前記エッチング液に燐酸を補充する燐酸補充機構と、
前記基板のエッチング中に前記燐酸補充機構を制御して、前記エッチング液のシリコン濃度を変化させる制御部と
を備える、基板処理装置。 - 前記制御部は、前記基板を用いて製造される半導体デバイスの構造に応じて設定された燐酸の補充流量の設定値に基づいて、前記基板のエッチング中に前記燐酸補充機構を制御する、請求項8に記載の基板処理装置。
- 前記エッチング液のシリコン濃度を計測するシリコン濃度計を更に備え、
前記制御部は、前記基板のエッチング中に前記シリコン濃度計によって計測されるシリコン濃度に基づいて、前記基板のエッチング中に前記燐酸補充機構を制御する、請求項8に記載の基板処理装置。 - 前記エッチング液に補充する前記燐酸に、シリコンを含有するシリコン含有液を供給するシリコン供給機構を更に備える、請求項8に記載の基板処理装置。
- 前記制御部は、前記基板を用いて製造される半導体デバイスの構造に応じて設定されたシリコン含有液の供給流量の設定値に基づいて、前記基板のエッチング中に前記シリコン供給機構を制御する、請求項11に記載の基板処理装置。
- 前記エッチング液のシリコン濃度を計測するシリコン濃度計を更に備え、
前記制御部は、前記基板のエッチング中に前記シリコン濃度計によって計測されるシリコン濃度に基づいて、前記基板のエッチング中に前記シリコン供給機構を制御する、請求項11に記載の基板処理装置。 - 前記半導体デバイスの前記構造は、前記半導体デバイスにおいて積層方向に隣り合う前記シリコン酸化膜間の隙間の大きさを示す、請求項9又は請求項12に記載の基板処理装置。
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Application Number | Priority Date | Filing Date | Title |
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JP2021083202A JP2022176662A (ja) | 2021-05-17 | 2021-05-17 | 基板処理方法、及び基板処理装置 |
TW111117673A TWI819601B (zh) | 2021-05-17 | 2022-05-11 | 基板處理方法及基板處理裝置 |
KR1020220059591A KR20220155916A (ko) | 2021-05-17 | 2022-05-16 | 기판 처리 방법, 및 기판 처리 장치 |
CN202210543393.5A CN115360118A (zh) | 2021-05-17 | 2022-05-17 | 衬底处理方法及衬底处理装置 |
US17/746,043 US20220367203A1 (en) | 2021-05-17 | 2022-05-17 | Substrate processing method and substrate processing apparatus |
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