JP7267426B2 - 基板処理装置、及び基板処理方法 - Google Patents
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- 238000012545 processing Methods 0.000 title claims description 230
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- 239000007788 liquid Substances 0.000 claims description 343
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- 229910052581 Si3N4 Inorganic materials 0.000 claims description 14
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 7
- 238000005530 etching Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 34
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 21
- 229910052710 silicon Inorganic materials 0.000 description 21
- 239000010703 silicon Substances 0.000 description 21
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
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- 229910002601 GaN Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
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- 239000000908 ammonium hydroxide Substances 0.000 description 1
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- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 1
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- 229910001195 gallium oxide Inorganic materials 0.000 description 1
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000352 supercritical drying Methods 0.000 description 1
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- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
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- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/0217—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
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- 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
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- 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
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- 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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Description
シリコン酸化膜とシリコン窒化膜とを交互に含む積層膜を含む基板を水平に保持する基板保持部と、前記基板保持部に保持された状態の前記基板に対して上方から前記シリコン窒化膜を選択的にエッチングする処理液を供給する液供給部と、を含む液処理部と、
前記液処理部で使用する処理液を作製する液作製部と、
前記液供給部及び前記液作製部を制御する制御部と、を有し、
前記液処理部は、前記基板に供給された前記処理液を回収する回収部を更に含み、
前記液作製部は、前記処理液を貯留する供給タンクと、前記供給タンクに対して前記処理液を供給する供給器と、前記供給タンクから取り出した前記処理液を前記供給タンクに戻す循環路と、前記循環路の途中から前記液処理部の前記液供給部に前記処理液を送る送液路と、前記回収部から送られる前記処理液を貯留する回収タンクと、前記回収タンクに貯留した前記処理液を前記供給タンクに戻す還流路と、前記回収タンクに貯留した前記処理液を基板処理装置の外部に排出する排出路と、前記循環路に設けられ、前記基板から前記処理液に溶出する溶出成分の濃度を計測する濃度計と、を含み、
前記制御部は、
前記液供給部を制御して、前記液供給部から前記基板に向う前記処理液の鉛直方向流速が、前記基板の上面に沿って流れる前記処理液の水平方向流速よりも速くなるような前記処理液の供給速度とし、
前記液作製部を制御して、前記溶出成分の濃度の計測値が設定値を超えると、前記回収タンクに貯留した前記処理液を基板処理装置の外部に排出する。
実施例1、2及び比較例1では、基板2の回転数を変更した以外、同じ処理条件で基板2を処理した。具体的には、半径25mmの基板2を回転させると共に基板2の中心の真上に配置した一つの吐出口からリン酸水溶液を供給した。基板2として、シリコン酸化膜22とシリコン窒化膜23とをシリコンウエハ21の上に交互に繰り返し積層し、その積層膜24を厚さ方向に貫通する開口部25を形成したものを用いた。リン酸水溶液の供給量は1L/分であり、処理時間は40分であった。周方向流速V2A、及び径方向流速V2Bは、基板2の回転中心から15mm離れた位置でのものを、VOF法により求めた。鉛直方向流速V1は、吐出口から吐出されるリン酸水溶液の流量を、吐出口の面積で割った値として求めた。
2 基板
3 処理液
5 液処理部
51 基板保持部
52 液供給部
6 液作製部
9 制御部
Claims (6)
- シリコン酸化膜とシリコン窒化膜とを交互に含む積層膜を含む基板を水平に保持する基板保持部と、前記基板保持部に保持された状態の前記基板に対して上方から前記シリコン窒化膜を選択的にエッチングする処理液を供給する液供給部と、を含む液処理部と、
前記液処理部で使用する処理液を作製する液作製部と、
前記液供給部及び前記液作製部を制御する制御部と、を有し、
前記液処理部は、前記基板に供給された前記処理液を回収する回収部を更に含み、
前記液作製部は、前記処理液を貯留する供給タンクと、前記供給タンクに対して前記処理液を供給する供給器と、前記供給タンクから取り出した前記処理液を前記供給タンクに戻す循環路と、前記循環路の途中から前記液処理部の前記液供給部に前記処理液を送る送液路と、前記回収部から送られる前記処理液を貯留する回収タンクと、前記回収タンクに貯留した前記処理液を前記供給タンクに戻す還流路と、前記回収タンクに貯留した前記処理液を基板処理装置の外部に排出する排出路と、前記循環路に設けられ、前記基板から前記処理液に溶出する溶出成分の濃度を計測する濃度計と、を含み、
前記制御部は、
前記液供給部を制御して、前記液供給部から前記基板に向う前記処理液の鉛直方向流速が、前記基板の上面に沿って流れる前記処理液の水平方向流速よりも速くなるような前記処理液の供給速度とし、
前記液作製部を制御して、前記溶出成分の濃度の計測値が設定値を超えると、前記回収タンクに貯留した前記処理液を基板処理装置の外部に排出する、基板処理装置。 - 前記制御部は、前記液作製部を制御して、前記溶出成分の濃度の計測値が前記設定値を超えると、前記溶出成分の濃度が前記設定値よりも低い前記処理液を前記供給器から前記供給タンクに供給する、請求項1に記載の基板処理装置。
- 前記液供給部は、前記処理液の吐出口が二次元的に分散配置されたシャワーヘッドノズルを有する、請求項1又は2に記載の基板処理装置。
- 前記液供給部は、前記処理液の吐出口が一列又は複数列で並ぶバーノズルを有する、請求項1又は2に記載の基板処理装置。
- 前記液処理部は複数であって、
前記液作製部は、複数の前記液処理部のそれぞれの前記液供給部に対して、前記処理液を供給する、請求項1~4のいずれか1項に記載の基板処理装置。 - 請求項1~5のいずれか1項に記載の基板処理装置を用いて、前記基板を処理することを含む、基板処理方法。
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JP2019137214 | 2019-07-25 | ||
JP2019137214 | 2019-07-25 | ||
PCT/JP2020/027292 WO2021015045A1 (ja) | 2019-07-25 | 2020-07-13 | 基板処理装置、及び基板処理方法 |
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JPWO2021015045A1 JPWO2021015045A1 (ja) | 2021-01-28 |
JP7267426B2 true JP7267426B2 (ja) | 2023-05-01 |
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WO2016175233A1 (ja) | 2015-04-30 | 2016-11-03 | 東京エレクトロン株式会社 | 基板液処理方法および基板液処理装置 |
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JP2016032030A (ja) | 2014-07-29 | 2016-03-07 | 株式会社Screenホールディングス | 基板処理装置および基板処理方法 |
WO2016175233A1 (ja) | 2015-04-30 | 2016-11-03 | 東京エレクトロン株式会社 | 基板液処理方法および基板液処理装置 |
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