JP6396822B2 - プラズマ処理装置のサセプタの電位を制御する方法 - Google Patents
プラズマ処理装置のサセプタの電位を制御する方法 Download PDFInfo
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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
- H01J37/32715—Workpiece holder
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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
- H01J37/32532—Electrodes
- H01J37/32577—Electrical connecting means
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Description
BDC(T1)=−K1×MVPP_LF(T1) …(1)
BDC(T1)=−(K1×MVPP_LF(T1)−J1×MPr_LF(T1)) …(2)
BDC(T1)=−(K1−D1×MPr_LF(T1))×MVPP_LF(T1) …(3)
BDC(T1)=−K1*MVPP_LF(T1)*E1*(MPf_LF(T1)−MPr_LF(T1))/MPf_LF(T1) …(4)
BDC(T1)=−K1×MVPP_LF(T1)−K2×MVPP_HF(T1) …(5)
BDC(T1)=−(K1×MVPP_LF(T1)−J1×MPr_LF(T1))−(K2×MVPP_HF(T1)−J2×MPr_HF(T1)) …(6)
BDC(T1)=−(K1−D1×MPr_LF(T1))×MVPP_LF(T1)−(K2−D2×MPr_HF(T1))×MVPP_HF(T1) …(7)
BDC(T1)=−K1*MVPP_LF(T1)*E1*(MPf_LF(T1)−MPr_LF(T1))/MPf_LF(T1)−K2*MVPP_HF(T1)*E2*(MPf_HF(T1)−MPr_HF(T1))/MPf_HF(T1) …(8)
BDC(T2)=−K1×MVPP_LF(T2)−K2×MVPP_HF(T2) …(9)
BDC(T2)=−(K1×MVPP_LF(T2)−J1×MPr_LF(T2))−(K2×MVPP_HF(T2)−J2×MPr_HF(T2)) …(10)
BDC(T2)=−(K1−D1×MPr_LF(T2))×MVPP_LF(T2)−(K2−D2×MPr_HF(T2))×MVPP_HF(T2) …(11)
BDC(T2)=−K1*MVPP_LF(T2)*E1*(MPf_LF(T2)−MPr_LF(T2))/MPf_LF(T2)−K2*MVPP_HF(T2)*E2*(MPf_HF(T2)−MPr_HF(T2))/MPf_HF(T2) …(12)
VNB=VDC×C180/(C180+C176) …(13)
CVPP_LF(T1)={8×(MPf_LF(T1)−MPr_LF(T1))×(RL(T1)+XL(T1)2/RL(T1))}1/2 …(14)
ZPL(T1)=MZL_LH(T1)−Z100(T1) …(15)
CVPP_HF(T1)={8×(MPf_HF(T1)−MPr_HF(T1))×(RH(T1)+XH(T1)2/RH(T1))}1/2 …(16)
CVPP_LF(T2)={8×(MPf_LF(T2)−MPr_LF(T2))×(RL(T2)+XL(T2)2/RL(T2))}1/2 …(17)
CVPP_HF(T2)={8×(MPf_HF(T2)−MPr_HF(T2))×(RH(T2)+XH(T2)2/RH(T2))}1/2 …(18)
Claims (10)
- プラズマ処理装置のサセプタの電位を制御する方法であって、
該プラズマ処理装置は、
処理容器と、
導体から構成され、前記処理容器内に設けられたサセプタと、
前記サセプタ上に設けられた静電チャックと、
イオン引き込みのための第1の高周波を発生する第1の高周波電源と、
プラズマ生成用の第2の高周波を発生する第2の高周波電源と、
前記静電チャックの電極に正極性の直流電圧を印加するための直流電源と、
前記サセプタに電圧を印加するための電圧印加部と、
を備え、
前記第1の高周波電源及び前記第2の高周波電源の少なくとも一方からパルス変調された変調高周波を前記サセプタに供給する工程と、
前記電圧印加部から、前記変調高周波に同期してパルス変調された変調直流電圧であり、前記静電チャック上に載置された基板の電位と前記サセプタの電位との差を減少させるように電圧値が設定された該変調直流電圧を前記サセプタに印加する工程と、
を含む方法。 - 前記電圧印加部は、前記変調高周波に同期したパルス信号であって、前記変調高周波が第1のパワーを有する第1の期間において第1の信号レベルを有し、前記変調高周波が第1のパワーよりも小さい第2のパワーを有する第2の期間において第2の信号レベルを有する該パルス信号を、前記第1の高周波電源及び前記第2の高周波電源の前記少なくとも一方から受け、該パルス信号に同期して変調された前記変調直流電圧を前記サセプタに印加する、請求項1に記載の方法。
- 前記変調高周波を前記サセプタに供給する前記工程では、前記第1の高周波がパルス変調されることにより、該変調高周波が前記サセプタに供給され、
前記変調直流電圧を前記サセプタに印加する前記工程において、前記電圧印加部は、前記第1の期間において前記サセプタに直流電圧を印加し、前記第2の期間において前記サセプタに直流電圧を印加しない、
請求項2に記載の方法。 - 前記電圧印加部は、前記変調高周波が前記サセプタに供給される伝送路上での電圧振幅が大きいほど絶対値が大きくなる電圧値を有する直流電圧を、前記第1の期間において前記サセプタに印加する、請求項3に記載の方法。
- 前記電圧印加部は、前記第1の高周波のパワー、前記第2の高周波のパワー、及び前記変調高周波の変調周波数にデータテーブル中で対応付けられている電圧値を有する直流電圧を前記第1の期間において前記サセプタに印加する、請求項3に記載の方法。
- 前記電圧印加部は、前記基板の自己バイアス電位の測定値に応じた直流電圧を前記第1の期間において前記サセプタに印加する、請求項3に記載の方法。
- 前記変調高周波を前記サセプタに供給する前記工程では、前記第2の高周波がパルス変調されることにより、該変調高周波が前記サセプタに供給され、
前記変調直流電圧を前記サセプタに印加する前記工程において、前記電圧印加部は、前記第1の期間において前記サセプタに第1の電圧値を有する第1の直流電圧を印加し、前記第2の期間において前記第1の電圧値の絶対値よりも大きい絶対値を有する第2の電圧値を有する第2の直流電圧を前記サセプタに印加する、
請求項2に記載の方法。 - 前記電圧印加部は、前記第1の期間及び前記第2の期間の各々において、前記変調高周波が前記サセプタに供給される伝送路上での電圧振幅が大きいほど絶対値が大きくなる電圧値を有する直流電圧を、前記サセプタに印加する、請求項7に記載の方法。
- 前記電圧印加部は、前記第1の期間及び前記第2の期間の各々において、前記第1の高周波のパワー、前記第2の高周波のパワー、及び前記変調高周波の変調周波数にデータテーブル中で対応付けられている電圧値を有する直流電圧を前記サセプタに印加する、請求項7に記載の方法。
- 前記電圧印加部は、前記第1の期間及び前記第2の期間の各々において、前記基板の自己バイアス電位の測定値に応じた直流電圧を前記サセプタに印加する、請求項7に記載の方法。
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JP2015027433A JP6396822B2 (ja) | 2015-02-16 | 2015-02-16 | プラズマ処理装置のサセプタの電位を制御する方法 |
US15/008,855 US9761419B2 (en) | 2015-02-16 | 2016-01-28 | Method for controlling potential of susceptor of plasma processing apparatus |
TW105103398A TWI700724B (zh) | 2015-02-16 | 2016-02-03 | 電漿處理裝置之基座之電位的控制方法 |
KR1020160016391A KR102315643B1 (ko) | 2015-02-16 | 2016-02-12 | 플라즈마 처리 장치의 서셉터의 전위를 제어하는 방법 |
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