JP6505027B2 - 試料の離脱方法およびプラズマ処理装置 - Google Patents
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- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
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Description
Claims (20)
- プラズマを用いて試料が処理される処理室と、前記プラズマを生成するための高周波電力を供給する高周波電源と、前記試料を静電吸着させる電極が配置され前記試料が載置される試料台と、前記電極に直流電圧を印加する直流電源とを備えるプラズマ処理装置において、
プラズマ処理された試料を前記試料台の上方に上昇させた後、前記試料の電位が小さくなるように前記直流電源の出力を制御する制御装置をさらに備えることを特徴とするプラズマ処理装置。 - プラズマを用いて試料が処理される処理室と、前記プラズマを生成するための高周波電力を供給する高周波電源と、前記試料を静電吸着させる電極が配置され前記試料が載置される試料台と、前記電極に直流電圧を印加する直流電源とを備えるプラズマ処理装置において、
静電吸着した試料を前記試料台から離脱させるためのプラズマをオフさせた後、前記プラズマをオフさせる前の前記直流電圧から正の方向へ前記直流電圧をシフトさせるように前記直流電源の出力を制御する制御装置をさらに備えることを特徴とするプラズマ処理装置。 - 請求項1に記載のプラズマ処理装置において、
前記制御装置は、前記プラズマ処理された試料を前記試料台の上方に上昇させた後、前記静電吸着した試料を前記試料台から離脱させるためのプラズマをオフさせることを特徴とするプラズマ処理装置。 - 請求項2に記載のプラズマ処理装置において、
前記直流電圧の正の方向へのシフト量は、前記試料台の上方に上昇させられた試料と前記試料台の表面との間の静電容量および前記プラズマの浮遊電位に基づいて求められていることを特徴とするプラズマ処理装置。 - 請求項2に記載のプラズマ処理装置において、
前記プラズマのオフ後の直流電圧は、0Vであることを特徴とするプラズマ処理装置。 - 請求項2に記載のプラズマ処理装置において、
前記プラズマのオフから前記直流電圧を正の方向へシフトさせるまでの時間は、0.1〜1.0秒の範囲内の時間であることを特徴とするプラズマ処理装置。 - 請求項4に記載のプラズマ処理装置において、
前記試料の電位のシフト量は、+10〜+20Vの範囲内の値であることを特徴とするプラズマ処理装置。 - 請求項2に記載のプラズマ処理装置において、
前記直流電圧の正の方向へのシフト量は、前記試料台から離脱させた試料の電位と前記直流電圧との相関関係に基づいて求められることを特徴とするプラズマ処理装置。 - 請求項2に記載のプラズマ処理装置において、
前記直流電圧の正方向へのシフト量は、前記直流電圧の正方向へのシフト量と前記試料の電位のシフト量との比が静電容量比と等しくなるような値として求められ、
前記静電容量比は、前記試料台の上方に上昇させられた試料と前記試料台の表面との間の静電容量と、前記試料台から前記試料を上方へ上昇させる離脱機構を介した地表に対する試料の静電容量と、の比であることを特徴とするプラズマ処理装置。 - 請求項2に記載のプラズマ処理装置において、
前記制御装置は、前記プラズマをオフさせる前の前記直流電圧から正の方向へ前記直流電圧をシフトさせた後、前記プラズマ処理された試料を前記処理室から搬出させることを特徴とするプラズマ処理装置。 - 静電吸着させるための電極に直流電圧を印加することにより試料を静電吸着させる試料台からプラズマ処理された試料を離脱させる試料の離脱方法において、
前記プラズマ処理された試料を前記試料台の上方に上昇させた後、前記試料の電位が小さくなるように前記直流電圧を制御することを特徴とする試料の離脱方法。 - 静電吸着させるための電極に直流電圧を印加することにより試料を静電吸着させる試料台からプラズマ処理された試料を離脱させる試料の離脱方法において、
前記静電吸着した試料を前記試料台から離脱させるためのプラズマをオフさせた後、前記プラズマをオフさせる前の前記直流電圧から正の方向へ前記直流電圧をシフトさせることを特徴とする試料の離脱方法。 - 請求項11に記載の試料の離脱方法において、
前記プラズマ処理された試料を前記試料台の上方に上昇させた後、前記静電吸着した試料を前記試料台から離脱させるためのプラズマをオフすることを特徴とする試料の離脱方法。 - 請求項12に記載の試料の離脱方法において、
前記試料台の上方に上昇させられた試料と前記試料台の表面との間の静電容量および前記プラズマの浮遊電位に基づいて前記直流電圧の正の方向へのシフト量を求めることを特徴とする試料の離脱方法。 - 請求項12に記載の試料の離脱方法において、
前記プラズマのオフ後の直流電圧を0Vとすることを特徴とする試料の離脱方法。 - 請求項12に記載の試料の離脱方法において、
前記プラズマのオフから前記直流電圧を正の方向へシフトさせるまでの時間を0.1〜1.0秒の範囲内の時間とすることを特徴とする試料の離脱方法。 - 請求項14に記載の試料の離脱方法において、
前記試料の電位のシフト量を+10〜+20Vの範囲内の値とすることを特徴とする試料の離脱方法。 - 請求項12に記載の試料の離脱方法において、
前記試料台から離脱させた試料の電位と前記直流電圧との相関関係に基づいて前記直流電圧の正の方向へのシフト量を求めることを特徴とする試料の離脱方法。 - 請求項12に記載の試料の離脱方法において、
前記直流電圧の正方向へのシフト量と前記試料の電位のシフト量との比が静電容量比と等しくなるように前記直流電圧の正方向へのシフト量を求め、
前記静電容量比は、前記試料台の上方に上昇させられた試料と前記試料台の表面との間の静電容量と、前記試料台から前記試料を上方へ上昇させる離脱機構を介した地表に対する試料の静電容量と、の比であることを特徴とする試料の離脱方法。 - 請求項12に記載の試料の離脱方法において、
前記プラズマをオフさせる前の前記直流電圧から正の方向へ前記直流電圧をシフトさせた後、前記試料がプラズマ処理される処理室から前記プラズマ処理された試料を搬出することを特徴とする試料の離脱方法。
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KR1020160098402A KR102001018B1 (ko) | 2016-01-04 | 2016-08-02 | 시료의 이탈 방법 및 플라스마 처리 장치 |
TW105126383A TWI612611B (zh) | 2016-01-04 | 2016-08-18 | 樣品的脫離方法及電漿處理裝置 |
US15/248,205 US10490412B2 (en) | 2016-01-04 | 2016-08-26 | Method for releasing sample and plasma processing apparatus using same |
US16/660,938 US11107694B2 (en) | 2016-01-04 | 2019-10-23 | Method for releasing sample and plasma processing apparatus using same |
US17/386,892 US11664233B2 (en) | 2016-01-04 | 2021-07-28 | Method for releasing sample and plasma processing apparatus using same |
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JP6407694B2 (ja) * | 2014-12-16 | 2018-10-17 | 株式会社日立ハイテクノロジーズ | プラズマ処理装置 |
JP6811144B2 (ja) * | 2017-05-30 | 2021-01-13 | 東京エレクトロン株式会社 | プラズマ処理装置の静電チャックを運用する方法 |
CN108550538B (zh) * | 2018-05-21 | 2021-01-08 | 浙江兰达光电科技有限公司 | 一种半导体芯片生产工艺 |
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