JP4988402B2 - プラズマ処理装置 - Google Patents
プラズマ処理装置 Download PDFInfo
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- JP4988402B2 JP4988402B2 JP2007090137A JP2007090137A JP4988402B2 JP 4988402 B2 JP4988402 B2 JP 4988402B2 JP 2007090137 A JP2007090137 A JP 2007090137A JP 2007090137 A JP2007090137 A JP 2007090137A JP 4988402 B2 JP4988402 B2 JP 4988402B2
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- 238000004544 sputter deposition Methods 0.000 description 1
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Classifications
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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
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32532—Electrodes
- H01J37/32568—Relative arrangement or disposition of electrodes; moving means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/32623—Mechanical discharge control means
- H01J37/32642—Focus rings
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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
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist 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
- H01L21/04—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
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32135—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only
- H01L21/32136—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas
- H01L21/32137—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas of silicon-containing layers
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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
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32139—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer using masks
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- Condensed Matter Physics & Semiconductors (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Drying Of Semiconductors (AREA)
- Chemical Vapour Deposition (AREA)
Description
27,27′内のウエハ配置の姿勢に合わせてその位置合わせを行う。
27,27′はそれぞれ同等の機能を有しており、いずれか一方がウエハを大気圧から真空へ(ロード)或いは真空から大気圧へ(アンロード)の圧力変化のいずれかのみを実施するものではないが、求められる仕様により一方を何れかに限定して使用しても良い。
26,26′と真空容器24,24′との間を連結して支持する複数の支持柱を有して、処理ユニット14,14′を固定し保持している。
50に供給される電界を発生する電波源及び磁場を発生するための手段と処理室50内側を排気して減圧する真空ポンプを有する真空排気装置53が配置されている。処理室50内部において試料台100の試料載置面の上方には、これに対向して処理室50の天井面を構成するように試料110の径よりも大きな径を有した略円形の板であるシャワープレート60が配置されている。シャワープレート60は、試料台100またはこれに載せられる試料110の中心とほぼ同軸の中心の周囲に配置された複数の貫通孔を有し、この貫通孔を通して上記ガス供給ユニット17から共有された処理用ガスが処理室50の天井部に供給される。
100及び開口54と真空排気装置53の真空ポンプとが略同心に配置されている。このような構成により、処理の軸周り、試料110の周方向について処理の均一性が向上され処理の歩留まりが向上される。なお、図示していないが、本実施例では、上記処理ユニット13を含む真空処理装置10の各部の動作を調節するため、これら各部の動作を検出するセンサからの信号を通信手段を介し受信して、この受信した信号から各部の状態を検出した結果を基づきこれら各部の動作を指令する信号を通信手段を介して発進してこれらの動作を調節する制御装置を備えている。
111との間の空間に試料110の裏面側から外周側上方へガスを供給する手段を配置している。すなわち、本実施例では、試料台100の凸起部の上部外周側の凹み部に基材を貫通して配置されたガス供給絶縁ボス116を備え、凹み部上表面の複数の箇所に凸起部を囲むように略等間隔に配置された開口から特定のガスを導入して処理室50から試料
110の外周縁部の裏面とフォーカスリング111の段差部111′表面との間の空間に進入してきた付着性の物質を再度処理室50側に排出しようとする構成を備えている。
(605)た後、静電吸着用の直流電力を停止し(606)て試料110の吸着を解除する。その後、処理済の試料110を試料台100上方に持ち上げて遊離させて処理室50外に搬出する。
111へ給電する(下方の給電リング112へ高周波電力を供給する)ことで、供給された不活性ガスのプラズマ放電を試料110の外周縁近傍に生起させる。このプラズマ中の荷電粒子,反応性粒子と試料110表面との相互作用により試料110の周縁部裏面表面への付着物を除去、あるいは付着を抑制する。
50内に導入して、試料110表面の膜の加工した形状を適正に調節する場合がある。例えば、エッチングにより溝形状を形成する場合に有機成分を有するガス(CxHyや
CxHyOz等)を導入して溝の側壁の表面のエッチングを抑制して深さ方向へのエッチングを相対的に大きくすることで、深い(アスペクト比の大きな)溝で溝の幅が深さ方向により均一である溝形状を形成することが行われる。
110表面の付着物の分布が所期のものからずれてしまい処理対象の膜の加工結果が所望の形状からずれてしまうという問題が生起する虞がある。このため、本実施例では、試料110表面のバイアス電位とフォーカスリング111表面のバイアス電位との間の差が少なくなるようにして、試料110外周縁部近傍でのプラズマ形成を抑制する(603)。
Si層705の上方にSiO2 膜704及びその上方のPolySi膜703を備え、さらにその上方にハードマスクとしてのSiN膜702及びこのSiN膜702の加工形状を所望に調節するためのマスクとしてのレジスト膜701を備えている。レジスト膜701としては、フォトレジストやArFレジスト等の何れでも良い。
PolySi膜またはW−PolySi膜等の膜層707及び自然酸化膜706を備えている。この場合、エッチング処理の初期でハードマスクとなる自然酸化膜等の処理では、付着物ガスを添加しないか少なく添加してエッチングメインのガスによりエッチングを進める。
801表面の電子放出能力を高めてプラズマ発生を容易にする。
11 大気側ブロック
12 処理ブロック
13,13′14,14′ 処理ユニット
23 真空容器
50 処理室
51 ステージ
52 マグネトロン
53 真空排気装置
54 開口
55 処理ガス導入口
56 ソレノイドコイル
100 試料台
110 試料
111 フォーカスリング
112 給電リング
113 絶縁リング
114 加熱調整機構
115 ガス供給ライン
116 ガス供給絶縁ボス
117 固定ボルト
Claims (4)
- 処理室内に配置された試料台上に載せられたウエハの上面に配置された複数の膜構造を前記試料台内の電極に高周波電力を供給しつつ前記処理室内で形成したプラズマを用いてエッチング処理するプラズマ処理装置であって、
前記試料台が円筒形状部を備えた凸部及びこの凸部の上面に前記ウエハが載せられる載置面を有し、
前記試料台の凸部の前記円筒形状部の外周側であって該円筒形状部の外周壁とすき間を空けてこの試料台に載せられたリング状部材と、
前記載置面の外周側の前記試料台上に配置されガスが供給される供給口と、
前記試料台と前記リング状部材との間に配置され、前記円筒形状部の外周壁と前記リング状部材の内周縁部との間のすき間であって前記載置面に前記ウエハが載せられた状態で当該ウエハの外周縁部の裏面に面する開口及びこの開口と前記供給口との間を連通し前記供給口からのガスが内部を通流して前記開口から流出する流路とを備え、
前記流路は前記開口の下方で前記円筒形の外周壁を囲んで配置されたリング状の空間であって前記円筒形状部の半径方向についての大きさが前記開口の前記円筒形状部の半径方向についての大きさより大きくされたリング状の空間を備えたプラズマ処理装置。 - 請求項1に記載のプラズマ処理装置であって、
前記試料台の凸部の前記円筒形状の外周壁との間に配置された前記流路の前記開口からの前記ガスが前記ウエハの外周縁部の裏面と前記リング状部材の表面との間のすき間から前記処理室内に流入するプラズマ処理装置。 - 請求項1または2に記載のプラズマ処理装置であって、
前記流路が前記リング状の空間の下方でこれと連通されて配置され前記円筒形上部の半径方向についての大きさが前記リング状の空間の大きさより小さくされた空間を備えたプラズマ処理装置。 - 請求項3に記載のプラズマ処理装置であって、
前記凸部の前記円筒形状の外周壁の外周側の前記リング状部材の下方に前記供給口が配置されたプラズマ処理装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007090137A JP4988402B2 (ja) | 2007-03-30 | 2007-03-30 | プラズマ処理装置 |
US11/844,377 US20080236751A1 (en) | 2007-03-30 | 2007-08-24 | Plasma Processing Apparatus |
US12/691,855 US20100163186A1 (en) | 2007-03-30 | 2010-01-22 | Plasma Processing Apparatus |
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JP2007090137A JP4988402B2 (ja) | 2007-03-30 | 2007-03-30 | プラズマ処理装置 |
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JP2008251764A JP2008251764A (ja) | 2008-10-16 |
JP4988402B2 true JP4988402B2 (ja) | 2012-08-01 |
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JP2007090137A Expired - Fee Related JP4988402B2 (ja) | 2007-03-30 | 2007-03-30 | プラズマ処理装置 |
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JP (1) | JP4988402B2 (ja) |
Families Citing this family (114)
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JP5260981B2 (ja) * | 2008-02-22 | 2013-08-14 | 株式会社日立ハイテクノロジーズ | 真空処理装置 |
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JP2006319043A (ja) * | 2005-05-11 | 2006-11-24 | Hitachi High-Technologies Corp | プラズマ処理装置 |
JP4410771B2 (ja) * | 2006-04-28 | 2010-02-03 | パナソニック株式会社 | ベベルエッチング装置およびベベルエッチング方法 |
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