JP7325350B2 - 成膜装置 - Google Patents
成膜装置 Download PDFInfo
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- JP7325350B2 JP7325350B2 JP2020016153A JP2020016153A JP7325350B2 JP 7325350 B2 JP7325350 B2 JP 7325350B2 JP 2020016153 A JP2020016153 A JP 2020016153A JP 2020016153 A JP2020016153 A JP 2020016153A JP 7325350 B2 JP7325350 B2 JP 7325350B2
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- C23C16/45523—Pulsed gas flow or change of composition over time
- C23C16/45525—Atomic layer deposition [ALD]
- C23C16/45544—Atomic layer deposition [ALD] characterized by the apparatus
- C23C16/45548—Atomic layer deposition [ALD] characterized by the apparatus having arrangements for gas injection at different locations of the reactor for each ALD half-reaction
- C23C16/45551—Atomic layer deposition [ALD] characterized by the apparatus having arrangements for gas injection at different locations of the reactor for each ALD half-reaction for relative movement of the substrate and the gas injectors or half-reaction reactor compartments
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45563—Gas nozzles
- C23C16/45578—Elongated nozzles, tubes with holes
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/458—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/46—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for heating the substrate
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- H01L21/67109—Apparatus for thermal treatment mainly by convection
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- H01L21/687—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 using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—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 using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
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Description
(成膜装置)
第1の実施形態の成膜装置について説明する。図1は、第1の実施形態の成膜装置の構成例を示す断面図である。図2は、図1の成膜装置の真空容器内の構成を示す斜視図である。図3は、図1の成膜装置の真空容器内の構成を示す平面図である。なお、図2及び図3においては、天板11の図示を省略している。
輻射調整部90は、ヒータユニット7から複数のウエハWへの輻射量を調整する。輻射調整部90は、輻射調整膜91又は輻射調整層92を含む。ただし、輻射調整部90は、輻射調整膜91と輻射調整層92の両方を含んでいてもよい。
輻射調整部90を有する成膜装置の作用効果について説明する。以下では、回転テーブル2がヒータユニット7からの輻射を透過する材料により形成されているものとする。
一実施形態の成膜方法について、前述の成膜装置を用いてシリコン窒化膜を成膜する場合を例に挙げて説明する。
次に、平面視で、回転テーブル2の下面における、ウエハWの外周部と重なる領域に輻射調整膜91が設けられた成膜装置において、回転テーブル2にウエハWを載置し、ヒータユニット7によりウエハWを加熱したときのウエハWの温度を測定した。なお、輻射調整膜91としては、酸化イットリウムを溶射することにより形成された反射膜(溶射厚:200μm)を用いた。また、比較のために、輻射調整部90を有しない成膜装置において、回転テーブル2にウエハWを載置し、ヒータユニット7によりウエハWを加熱したときのウエハWの温度を測定した。
第2の実施形態の成膜装置について説明する。図14は、第2の実施形態の成膜装置の構成例を示す断面図である。第2の実施形態の成膜装置は、第1の実施形態の成膜装置における輻射調整部90に代えて、回転テーブル2とヒータユニット7との間に設けられる輻射調整部93を有する。なお、その他の点については、第1の実施形態の成膜装置と同様であるため、以下では第1の実施形態の成膜装置と異なる点を中心に説明する。
2 回転テーブル
7 ヒータユニット
90 輻射調整部
91 輻射調整膜
92 輻射調整層
W ウエハ
Claims (14)
- 真空容器と、
前記真空容器内に回転可能に設けられ、周方向に沿って複数の基板を載置する回転テーブルと、
前記回転テーブルの下方に設けられ、輻射により前記複数の基板を加熱する加熱部と、
前記加熱部から前記複数の基板への輻射量を調整する輻射調整部と、
を有し、
前記輻射調整部は、前記複数の基板への輻射量を調整する輻射調整膜又は輻射調整層を含み、
前記輻射調整膜又は前記輻射調整層は、前記回転テーブルと独立して回転可能である、
成膜装置。 - 前記回転テーブルは、前記輻射を透過する材料により形成されている、
請求項1に記載の成膜装置。 - 前記輻射を透過する材料は、石英である、
請求項2に記載の成膜装置。 - 前記輻射調整部は、前記輻射調整膜を含み、
前記輻射調整膜は、前記輻射を反射する反射膜を含む、
請求項1乃至3のいずれか一項に記載の成膜装置。 - 前記反射膜は、シリコン酸化膜又は金属酸化物膜である、
請求項4に記載の成膜装置。 - 前記輻射調整部は、前記輻射調整膜を含み、
前記輻射調整膜は、前記輻射を吸収する吸収膜を含む、
請求項1乃至3のいずれか一項に記載の成膜装置。 - 前記吸収膜は、シリコン膜、シリコン窒化膜又は金属窒化物膜である、
請求項6に記載の成膜装置。 - 前記輻射調整部は、前記輻射調整層を含み、
前記輻射調整層は、凹凸形状を有する、
請求項1乃至3のいずれか一項に記載の成膜装置。 - 前記凹凸形状は、ブラスト処理により形成される、
請求項8に記載の成膜装置。 - 前記輻射調整部は、平面視で、前記複数の基板のそれぞれの少なくとも一部と重なるように設けられる、
請求項1乃至9のいずれか一項に記載の成膜装置。 - 前記輻射調整部は、平面視で、前記複数の基板のそれぞれの少なくとも外周部と重なるように設けられる、
請求項10に記載の成膜装置。 - 前記輻射調整部は、平面視で、前記複数の基板のそれぞれの少なくとも中心部と重なるように設けられる、
請求項10に記載の成膜装置。 - 前記輻射調整部は、
回転板と、
前記回転板を前記回転テーブルと独立して回転させる回転軸と、
前記回転板の上面及び下面の少なくとも一方に設けられる前記輻射調整膜又は前記輻射調整層と、
を含む、
請求項1乃至12のいずれか一項に記載の成膜装置。 - 前記回転テーブル及び前記回転板を、第1の回転モード及び第2の回転モードで回転させる制御部をさらに有し、
前記第1の回転モードは、前記複数の基板の各々の中心と前記輻射調整膜又は前記輻射調整層の中心とが一致するように、前記回転板の回転速度を前記回転テーブルの回転速度に同期させて回転させるモードであり、
前記第2の回転モードは、前記回転板の回転速度を前記回転テーブルの回転速度に同期させることなく、前記回転テーブル及び前記回転板を回転させるモードである、
請求項13に記載の成膜装置。
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