JPH06506084A - 高密度プラズマデポジションおよびエッチング装置 - Google Patents
高密度プラズマデポジションおよびエッチング装置Info
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- JPH06506084A JPH06506084A JP4505776A JP50577692A JPH06506084A JP H06506084 A JPH06506084 A JP H06506084A JP 4505776 A JP4505776 A JP 4505776A JP 50577692 A JP50577692 A JP 50577692A JP H06506084 A JPH06506084 A JP H06506084A
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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
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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
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32192—Microwave generated discharge
- H01J37/32211—Means for coupling power to the plasma
- H01J37/3222—Antennas
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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
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/321—Radio frequency generated discharge the radio frequency energy being inductively coupled to the plasma
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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
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/321—Radio frequency generated discharge the radio frequency energy being inductively coupled to the plasma
- H01J37/3211—Antennas, e.g. particular shapes of coils
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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
- H01J37/3266—Magnetic control 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
- H01J37/3266—Magnetic control means
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- H05H1/24—Generating plasma
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Abstract
Description
Claims (35)
- 1.高密度プラズマを発生するためにシステムにおいて、該システムが、 円筒形状をしたプラズマ閉じ込めチャンバーを具備し、さらにまた イオン化すべきガスを上記チャンバーに注入するための手段を具備し、さらにま た 上記円筒形状チャンバーを取り囲む単一ループエレメントを備えたアンテナ手段 を具備し、上記ループエレメントが、上記チャンバーの長さ方向にそっての中間 的な領域に位置する上記チャンバーの中心軸に対して45度を越える角度の平面 内に配置されており、さらにまた上記チャンバーおよび上記アンテナ手段に隣接 して配置された、軸方向の磁界を上記チャンバー内に発生するための手段を具備 し、さらにまた 上記アンテナ手段に結合された、上記ループアンテナエレメントを高周波エネル ギーで励起するための手段を具備している、 ことを特徴とするシステム。
- 2.上記磁界が1000ガウス以下であり、上記プラズマ密度が1013/cm 3を越える値であり、上記ループエレメントが磁界に対して約90度の角度をな していることを特徴とする、請求範囲第1項に記載のシステム。
- 3.上記システムが第1のプラズマ電流・密度ピークを50ガウス近傍に有して おり、また第2のプラズマ電流・密度ピークを400ガウス近傍に有しているこ とを特徴とする、請求範囲第2項に記載のシステム。
- 4.上記高周波エネルギが13.56MHz帯であり、また上記の励起のための 手段がインピーダンス整合手段をさらに備えていることを特徴とする、請求範囲 第3項に記載のシステム。
- 5.上記ループエレメントから与えられる波の電界のモード構成がm=0モード であって2π/kzのピッチを有しており、ωを励起周波数、ωcを電子サイク ロトロン角周波数、ωpをプラズマ周波数、kzをプラズマの軸方向の波数、a をプラズマ半径とするときkzが分散関係式[ω/ωc−ωp2/C2kz2] 2=1+(3.83/kza)2と位相速度ω/kzとによって定められること を特徴とする、請求範囲第1項に記載のシステム。
- 6.Ωcをイオンサイクロトロン周波数とするとき、Ωc<ω<ωcの関係を有 する低い周波数のホイッスラー波によってプラズマが励起されることを特徴とす る、請求範囲第5項に記載のシステム。
- 7.上記のプラズマ密度が1013を越え、また、上記チャンバーが非磁性体絶 縁性チャンバーであることを特徴とする、請求範囲第6項に記載のシステム。
- 8.上記円筒形状チャンバーが軸方向に出口開口を有しており、上記システムが 、さらに、上記円筒形状チャンバーに隣接して配置され上記出口開口を介して上 記円筒形状チャンバーと連絡されている処理室と、上記処理室内にて処理すべき 要素を支持するための手段とを有しており、上記処理室が上記円筒形状チャンバ ーよりも大きな断面積を有していることを特徴とする、請求範囲第1項に記載の システム。
- 9.上記処理室がプラズマをその中に維持するための手段を有していることを特 徴とする、請求範囲第8項に記載のシステム。
- 10.上記のプラズマを維持するための手段が、上記処理室のまわりの磁気手段 からなっており、これによって磁気バケット室を定めるようになされていること を特徴とする、請求範囲第9項に記載のシステム。
- 11.上記の磁気バケット室の平面構造が長方形であり、また上記システムが、 それぞれ関連する単一ループアンテナエレメントをその周囲に備え、磁気バケッ ト室にそって配置された、少なくとも2つのプラズマ閉じ込めチャンバーを有し ていることを特徴とする、請求範囲第10項に記載のシステム。
- 12.上記システムが、それぞれ関連する単一ループアンテナをその周囲に備え た少なくとも2つのプラズマ閉じ込めチャンバーと、上記アンテナを直列に結合 して高周波エネルギで上記アンテナを励起するための回路手段とを有しているこ とを特徴とする、請求範囲第8項に記載のシステム。
- 13.上記システムが、処理すべき基板を上記処理室内のプラズマの経路内に維 持するための手段をさらに有していることを特徴とする、請求範囲第8項に記載 のシステム。
- 14.上記システムが、尖端磁界を基板領域内に維持するための手段をさらに有 しており、上記尖端磁界が上記チャンバー内の軸方向磁界と対向するようになさ れていることを特徴とする、請求範囲第13項に記載のシステム。
- 15.上記の尖端磁界を維持するための手段が、尖端磁界強度を変化させて、基 板におけるプラズマ流束密度を時間的に平均化させる手段を有していることを特 徴とする、請求範囲第14項に記載のシステム。
- 16.上記システムが、上記処理室内のプラズマ経路中に配置されたスパッタタ ーゲットおよびスパッタターゲットホルダーと、上記円筒形状チャンバーと上記 スパッタターゲットとの間のプラズマ経路周辺の上記スパッタターゲットからス パッタされた材料の経路内に配置された基板手段とを有していることを特徴とす る、請求範囲第8項に記載のシステム。
- 17.基板を処理するためのプラズマ処理装置において、該装置が、 (a)プラズマ発生チャンバーの外部にこれを取りまくように近接して配置され た単一電流ループからなる、周波数が典型的にはRFの範囲内である電磁波を放 射するアンテナを有し、さらにまた、 (b)円筒状プラズマチャンバーを有し、該円筒状プラズマチャンバーが上記ア ンテナに近接して配置され上記アンテナと電磁気的な結合を有するようになされ ており、該円筒状プラズマ発生チャンバーの縦軸と上記電流ループとが互いに直 交するか、あるいは90度より小さな角度をなすようになされており、さらにま た、(c)第1の流体インジェクタを有し、該第1の流体インジェクタによって 流体が上記プラズマ発生チャンバー中に導入され、これによって、プラズマを上 記プラズマ発生チャンバー内に発生させることを可能とするようになされており 、さらにまた、 (d)磁界発生装置を有し、該磁界発生装置によって磁界が発生されるようにな されており、さらにまた、(e)処理室を有し、上記磁界によって該処理室にプ ラズマが輸送されるようになされており、さらにまた、(f)第2の流体インジ ェクタを有し、該第2の流体インジェクタによって流体が上記処理室中に導入さ れるようになされており、さらにまた、 (g)電流コントローラを有し、該電流コントローラによって、磁界発生装置内 の電流を制御し、これによってプラズマの形状を制御するようになされており、 さらにまた、 (h)基板ホルダーを有し、該基板ホルダーが上記処理室内に存在するようにな されており、さらにまた(i)基板を有し、該基板が上記基板ホルダー上にマウ ントされており、これによって、該基板がプラズマにさらされるようになされて いる、 ことを特徴とする装置。
- 18.さらに、 (j)上記基板ホルダー上に配置された基板に対して高周波電力を供給するため の補助高周波発生器を有し、さらにまた、 (k)高周波励起装置を有し、該高周波励起装置によって高周波電圧および電流 が発生されるようになされており、さらにまた、 (l)整合回路を有し、該整合回路によって上記高周波励起装置と上記アンテナ とが相互接続され、これによって、上記高周波励起装置から上記アンテナヘの高 周波エネルギの効率のよい転送が促進されるようになされている、 ことを特徴とする請求範囲第17項に記載の装置。
- 19.発生された磁界が事実上上記プラズマ発生チャンバーの縦軸と平行となっ ていることを特徴とする請求範囲第17項に記載のプラズマ処理装置。
- 20.上記基板ホルダーが、実質的に電気的に絶縁されている状態で上記処理室 内に支持されていることを特徴とする請求範囲第19項に記載のプラズマ処理装 置。
- 21.上記基板ホルダーが (a)銅ブロックと、 (b)上記の銅ブロックの温度を調節することを可能とする熱制御手段、 とから構成されていることを特徴とする請求範囲第20項に記載のプラズマ処理 装置。
- 22.第2の流体インジェクタが多孔性エレメントとして形成されており、これ によって、ガスを該エレメント内に導いて該エレメントから上記処理室にガスを 逃がすようになされていることを特徴とする請求範囲第21項に記載のプラズマ 処理装置。
- 23.上記の多孔性エレメントがリングとして形成されており、該リングがチュ ーブとして構成されており、該チューブにはガスが上記リングから上記処理室に 逃げることができるように穴が開けられていることを特徴とする請求範囲第22 項に記載のプラズマ処理装置。
- 24.上記プラズマ発生チャンバーが石英円筒であることを特徴とする請求範囲 第23項に記載のプラズマ処理装置。
- 25.複数の磁石をさらに有し、該磁石が上記処理室に近接して円周上に配置さ れており、隣接する磁石のN極とS極とが互いに反対の向きを有するようになさ れていることを特徴とする請求範囲第17項に記載のプラズマ処理装置。
- 26.上記の処理室が上記プラズマ発生チャンバーの断面積よりも大きな断面積 を有することを特徴とする請求範囲第25項に記載のプラズマ処理装置。
- 27.上記の処理室が実質的にステンレス鋼によって形成されていることを特徴 とする請求範囲第26項に記載のプラズマ処理装置。
- 28.上記の処理室の断面が正則幾何学形状をしていることを特徴とする請求範 囲第27項に記載のプラズマ処理装置。
- 29.さらに磁界発生装置が付加されており、該磁界発生装置が上記基板ホルダ ーの背後の上記基板のわきに、上記プラズマ発生チャンバーと対向するように、 他の磁界発生装置と実質的に平行な平面内に配置され、他の磁界発生装置が発生 する磁界と逆向きの磁界を発生するようになされていることを特徴とする請求範 囲第25項に記載のプラズマ処理装置。
- 30.上記基板ホルダーの背後に配置された上記磁界発生装置が、時間的に変化 する磁界を発生するようになされていることを特徴とする請求範囲第29項に記 載のプラズマ処理装置。
- 31.さらに磁界発生装置が付加されており、該磁界発生装置が上記基板ホルダ ーの背後の上記基板のわきに、上記プラズマ発生チャンバーと対向するように、 他の磁界発生装置と実質的に平行な平面内に配置され、他の磁界発生装置が発生 する磁界と逆向きの磁界を発生するようになされていることを特徴とする請求範 囲第17項に記載のプラズマ処理装置。
- 32.上記基板ホルダーの背後に配置された上記磁界発生装置が、時間的に変化 する磁界を発生するようになされていることを特徴とする請求範囲第31項に記 載のプラズマ処理装置。
- 33.(a)少なくとも1つのターゲットを有し、さらにまた (b)バイアス手段を有し、該バイアス手段によって上記ターゲットに電圧が供 給され、これによって、プラズマイオンが上記ターゲットを衝撃することができ るようになされ、また上記ターゲットからの材料が基板上にデポジットされるよ うになされている、 ことを特徴とする、スパッタデポジションのための、請求範囲第17項に記載の プラズマ処理装置。
- 34.さらに、 (a)複数のプラズマ発生チャンバーを有し、該プラズマ発生チャンバーのそれ ぞれが協同的に上記処理室に接続されており、さらにまた (b)複数のアンテナを有し、各アンテナが電磁気的に上記の各プラズマ発生チ ャンバーと結合されており、さらにまた (c)複数の磁界発生装置を有し、各磁界発生装置が磁気的に上記の各プラズマ 発生チャンバーと結合されている、 ことを特徴とする、請求範囲第17項に記載のプラズマ処理装置。
- 35.さらに、 (a)複数のプラズマ発生チャンバーを有し、該プラズマ発生チャンバーのそれ ぞれが協同的に上記処理室に接続されており、各プラズマは上記プラズマ発生チ ャンバーの縦軸に対して同軸に発生されるようになされ、さらにまた (b)複数のアンテナを有し、各アンテナが電磁気的にプラズマ発生チャンバー と結合されており、さらにまた(c)複数の磁界コイルを有し、該磁界コイルが 上記処理室に近接して配置されており、さらにまた(d)複数の磁界発生装置を 有し、各磁界発生装置が磁気的に上記の各プラズマ発生チャンバーと結合されて おり、さらにまた (e)上記処理室内にマウントされた複数の基板ホルダーを有する、 ことを特徴とする、請求範囲第17項に記載のプラズマ処理装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US07/650,788 US5122251A (en) | 1989-06-13 | 1991-02-04 | High density plasma deposition and etching apparatus |
US650,788 | 1991-02-04 | ||
PCT/US1992/000976 WO1992014258A1 (en) | 1991-02-04 | 1992-02-04 | High density plasma deposition and etching apparatus |
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JPH06506084A true JPH06506084A (ja) | 1994-07-07 |
JP3271765B2 JP3271765B2 (ja) | 2002-04-08 |
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US (1) | US5122251A (ja) |
EP (1) | EP0570484B1 (ja) |
JP (1) | JP3271765B2 (ja) |
KR (1) | KR100231221B1 (ja) |
AT (1) | ATE151569T1 (ja) |
AU (1) | AU1352192A (ja) |
DE (1) | DE69218924T2 (ja) |
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WO (1) | WO1992014258A1 (ja) |
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WO1986006923A1 (en) * | 1985-05-03 | 1986-11-20 | The Australian National University | Method and apparatus for producing large volume magnetoplasmas |
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-
1991
- 1991-02-04 US US07/650,788 patent/US5122251A/en not_active Expired - Lifetime
-
1992
- 1992-02-04 AT AT92905727T patent/ATE151569T1/de not_active IP Right Cessation
- 1992-02-04 WO PCT/US1992/000976 patent/WO1992014258A1/en active IP Right Grant
- 1992-02-04 AU AU13521/92A patent/AU1352192A/en not_active Abandoned
- 1992-02-04 KR KR1019930702304A patent/KR100231221B1/ko not_active IP Right Cessation
- 1992-02-04 EP EP92905727A patent/EP0570484B1/en not_active Expired - Lifetime
- 1992-02-04 DE DE69218924T patent/DE69218924T2/de not_active Expired - Lifetime
- 1992-02-04 JP JP50577692A patent/JP3271765B2/ja not_active Expired - Lifetime
- 1992-02-04 ES ES92905727T patent/ES2102497T3/es not_active Expired - Lifetime
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KR930703694A (ko) | 1993-11-30 |
DE69218924T2 (de) | 1998-01-15 |
EP0570484A1 (en) | 1993-11-24 |
EP0570484B1 (en) | 1997-04-09 |
ES2102497T3 (es) | 1997-08-01 |
US5122251A (en) | 1992-06-16 |
AU1352192A (en) | 1992-09-07 |
KR100231221B1 (ko) | 1999-11-15 |
ATE151569T1 (de) | 1997-04-15 |
JP3271765B2 (ja) | 2002-04-08 |
DE69218924D1 (de) | 1997-05-15 |
WO1992014258A1 (en) | 1992-08-20 |
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