JP4828599B2 - 基板処理装置 - Google Patents
基板処理装置 Download PDFInfo
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- JP4828599B2 JP4828599B2 JP2008514429A JP2008514429A JP4828599B2 JP 4828599 B2 JP4828599 B2 JP 4828599B2 JP 2008514429 A JP2008514429 A JP 2008514429A JP 2008514429 A JP2008514429 A JP 2008514429A JP 4828599 B2 JP4828599 B2 JP 4828599B2
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- 239000000758 substrate Substances 0.000 title claims description 64
- 230000001681 protective effect Effects 0.000 claims description 38
- 239000007789 gas Substances 0.000 description 82
- 235000012431 wafers Nutrition 0.000 description 55
- 238000000034 method Methods 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000000231 atomic layer deposition Methods 0.000 description 8
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000012495 reaction gas Substances 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000006557 surface reaction Methods 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Description
また、図13に示すように、編組構造の場合伸縮が可能で、引張りによって伸縮し長さに固体ばらつきが発生するので、長さの規定が困難である。
また、図14に示すように、電極保護管275との摩擦で全長が縮むことがある。
複数の基板を上下方向に積層した状態で収容する処理室と、
前記処理室内に処理ガスを供給するガス供給系と、
前記処理室内の雰囲気を排気する排気系と、
前記処理ガスを活性な状態とするため、前記基板の積層方向に延在された可撓性の部材から構成される少なくとも一対の電極と、
前記電極を収容する保護管と、
を有し、
前記保護管は最上端の基板位置よりも上側領域において屈曲部が設けられ、前記電極の先端が前記屈曲部を越えて前記保護管の先端側に位置している基板処理装置が提供される。
処理管と、
前記処理管内で複数の基板を上下方向に積層した状態で支持する支持部と、
前記処理管内に処理ガスを供給するガス供給系と、
前記処理管内の雰囲気を排気する排気系と、
前記基板の積層方向に延在された可撓性の部材から構成される少なくとも一対の電極と、
前記処理管の内側に配置され、前記電極を収容する保護管と、
を有し、
前記保護管は前記支持部に支持される最上端の基板位置よりも上側領域において屈曲部が設けられ、前記電極の先端が前記屈曲部に沿って前記保護管の先端側まで延在している基板処理装置が提供される。
本発明の好ましい実施例においては、バッチ式の縦型半導体製造装置にて、処理管内壁に溶接された保護管の中に収納された編組式の電極を使ってプラズマを生成しウエハ上に成膜する。この保護管に屈曲部を少なくとも1つ以上持たせ、保護管内壁と電極との間の摩擦により電極の形状変化を防止している。
ステップ1では、プラズマ励起の必要なNH3ガスと、プラズマ励起の必要のないDCSガスとを併行して流す。まずガス供給管232aに設けたバルブ243a、及びガス排気管231に設けたバルブ243dを共に開けて、ガス供給管232aからマスフローコントローラ241aにより流量調整されたNH3ガスをバッファ室237へ噴出し、電極269及び電極270間に高周波電源273から整合器272を介して高周波電力を0.1〜0.6kW印加してNH3をプラズマ励起し、活性種として処理室201に供給しつつガス排気管231から排気する。NH3ガスをプラズマ励起することにより活性種として流すときは、バルブ243dを適正に調整して処理室201内圧力を10〜100Paとする。マスフローコントローラ241aで制御するNH3の供給流量は1000〜10000sccmである。NH3をプラズマ励起することにより得られた活性種にウエハ200を晒す時間は1〜120秒間である。このときのヒータ207温度はウエハが300〜600℃になるよう設定してある。NH3ガスをプラズマで活性化する事によりウエハ表面を低温で処理することができる。
ステップ2では、ガス供給管232aのバルブ243aを閉めて、NH3の供給を止めた後、N2の不活性ガスで処理管203内をパージするが、その間も引続きガス溜め247へ供給を継続する。ガス溜め247に所定圧、所定量のDCSが溜まったら上流側のバルブ243bも閉めて、ガス溜め247にDCSを閉じ込めておく。また、ガス排気管231のバルブ243dは開いたままにし真空ポンプ246により、処理室201を十分に排気し、残留NH3を処理室201から排除する。
ステップ3では、処理室201の排気が終わったらガス排気管231のバルブ243dを閉じて排気を止める。ガス供給管232bの下流側のバルブ243cを開く。これによりガス溜め247に溜められたDCSが処理室201に一気に供給される。このときガス排気管231のバルブ243dが閉じられているので、処理室201内の圧力は急激に上昇して約931Pa(7Torr)まで昇圧される。DCSを供給するための時間は2〜4秒に設定し、その後上昇した圧力雰囲気中に晒す時間を2〜4秒に設定し、合計6秒とした。このときのウエハ温度はNH3の供給時と同じく、300〜600℃である。DCSの供給により、DCSが表面反応しN−H結合のHがSiと置換されて、ウエハ200上にSiN膜が成膜される。
ステップ3では、成膜後、バルブ243cを閉じ、バルブ243dを開けて処理室201を真空排気し、残留するDCSの成膜に寄与した後のガスを排除する。また、この時にはN2等の不活性ガスを処理室201に供給すると、更に残留するDCSの成膜に寄与した後のガスを処理室201から排除する効果が高まる。またバルブ243bを開いてガス溜め247へのDCSの供給を開始する。
複数の基板を上下方向に積層した状態で収容する処理室と、
前記処理室内に処理ガスを供給するガス供給系と、
前記処理室内の雰囲気を排気する排気系と、
前記処理ガスを活性な状態とするため、前記基板の積層方向に延在された可撓性の部材から構成される少なくとも一対の電極と、
前記電極を収容する保護管と、
を有し、
前記保護管は最上端の基板位置よりも上側領域において屈曲部が設けられ、前記電極の先端が前記屈曲部を越えて前記保護管の先端側に位置している基板処理装置が提供される。
処理管と、
前記処理管内で複数の基板を上下方向に積層した状態で支持する支持部と、
前記処理管内に処理ガスを供給するガス供給系と、
前記処理管内の雰囲気を排気する排気系と、
前記基板の積層方向に延在された可撓性の部材から構成される少なくとも一対の電極と、
前記処理管の内側に配置され、前記電極を収容する保護管と、
を有し、
前記保護管は前記支持部に支持される最上端の基板位置よりも上側領域において屈曲部が設けられ、前記電極の先端が前記屈曲部に沿って前記保護管の先端側まで延在している基板処理装置が提供される。
その結果、本発明は、プラズマにより励起された処理ガスを利用して半導体ウエハに成膜を行う基板処理装置に特に好適に利用できる。
Claims (7)
- 複数の基板を上下方向に積層した状態で収容する処理室と、
前記処理室内に処理ガスを供給するガス供給系と、
前記処理室内の雰囲気を排気する排気系と、
前記処理ガスを活性な状態とするため、前記基板の積層方向に延在された可撓性の部材から構成される少なくとも一対の電極と、
前記電極を収容する保護管と、
を有し、
前記保護管は最上端の基板位置よりも上側領域において屈曲部が設けられ、前記電極の先端が前記屈曲部を越えて前記保護管の先端側に位置している基板処理装置。 - 前記保護管の屈曲部は1つの曲率部から成り、前記電極は前記曲率部に沿って前記保護管の先端側まで延在している、請求項1に記載の基板処理装置。
- 前記保護管の屈曲部は複数の曲率部から成り、前記電極は前記複数の曲率部に沿って前記保護管の先端側まで延在している、請求項1に記載の基板処理装置。
- 前記保護管の屈曲部は2つの曲率部から成り、前記電極は前記2つの曲率部に沿って前記保護管の先端側まで延在している、請求項3に記載の基板処理装置。
- 前記保護管は先端部と下端部とを有し、前記先端部は閉塞端であって、前記下端部は前記電極が挿入される端部である、請求項1に記載の基板処理装置。
- 前記電極は、網組電極の内部に芯を組み込んだ構造を有する、請求項1に記載の基板処理装置。
- 処理管と、
前記処理管内で複数の基板を上下方向に積層した状態で支持する支持部と、
前記処理管内に処理ガスを供給するガス供給系と、
前記処理管内の雰囲気を排気する排気系と、
前記基板の積層方向に延在された可撓性の部材から構成される少なくとも一対の電極と、
前記処理管の内側に配置され、前記電極を収容する保護管と、
を有し、
前記保護管は前記支持部に支持される最上端の基板位置よりも上側領域において屈曲部が設けられ、前記電極の先端が前記屈曲部に沿って前記保護管の先端側まで延在している基板処理装置。
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JP5568212B2 (ja) * | 2007-09-19 | 2014-08-06 | 株式会社日立国際電気 | 基板処理装置、そのコーティング方法、基板処理方法及び半導体デバイスの製造方法 |
JP5409938B2 (ja) * | 2008-04-01 | 2014-02-05 | 株式会社日立国際電気 | 基板処理装置、半導体装置の製造方法および電極 |
JP5198299B2 (ja) * | 2008-04-01 | 2013-05-15 | 株式会社日立国際電気 | 基板処理装置、半導体装置の製造方法及び基板処理方法 |
JP5423205B2 (ja) * | 2008-08-29 | 2014-02-19 | 東京エレクトロン株式会社 | 成膜装置 |
JP5257328B2 (ja) * | 2009-11-04 | 2013-08-07 | 東京エレクトロン株式会社 | 基板処理装置、基板処理方法及び記憶媒体 |
JP5553588B2 (ja) * | 2009-12-10 | 2014-07-16 | 東京エレクトロン株式会社 | 成膜装置 |
JP5805461B2 (ja) * | 2010-10-29 | 2015-11-04 | 株式会社日立国際電気 | 基板処理装置および半導体装置の製造方法 |
KR102043876B1 (ko) | 2016-02-09 | 2019-11-12 | 가부시키가이샤 코쿠사이 엘렉트릭 | 기판 처리 장치 및 반도체 장치의 제조 방법 |
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