JP7213648B2 - 基板処理装置 - Google Patents
基板処理装置 Download PDFInfo
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- JP7213648B2 JP7213648B2 JP2018182832A JP2018182832A JP7213648B2 JP 7213648 B2 JP7213648 B2 JP 7213648B2 JP 2018182832 A JP2018182832 A JP 2018182832A JP 2018182832 A JP2018182832 A JP 2018182832A JP 7213648 B2 JP7213648 B2 JP 7213648B2
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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
- H01L21/68742—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 characterised by a lifting arrangement, e.g. lift pins
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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
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1619—Apparatus for electroless plating
- C23C18/1628—Specific elements or parts of the apparatus
- C23C18/163—Supporting devices for articles to be coated
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1675—Process conditions
- C23C18/1676—Heating of the solution
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Description
PIN:リフトピン211の高さ位置を表しており、UPが受け渡し位置、DOWNが処理位置にあることを表している。
EL2:第2電極部161Bの高さ位置を表しており、UPが第1電極部161Aと接触する位置、DOWNが第1電極部161Aから離れた位置にあることを表している。
POWER:給電部300からヒーター142への給電状態を表しており、ONが給電状態、OFFが給電停止状態であることを表している。
VAC:吸引装置154から吸着プレート120の下面吸引流路溝121Wへの吸引力印加状態を表しており、ONが吸引中、OFFが吸引停止中を表している。
N2-1:パージガス供給装置155から吸着プレート120の下面吸引流路溝121Wへのパージガス供給状態を表しており、ONが供給中、OFFが供給停止中を表している。
N2-2:パージガス供給装置155から吸着プレート120の下面パージ流路溝121Gへのパージガス供給状態を表しており、ONが供給中、OFFが供給停止中を表している。
WSC:ウエハセンサ901の動作状態を表しており、ONが吸着プレート120上のウエハWの有無を検出している状態、OFFが検出を行っていない状態を示す。「On Wafer Check」はウエハWが吸着プレート120上にウエハWが存在していることを確認するための検出動作である。「Off Wafer Check」はウエハWが吸着プレート120k上から確実に取り去られたことを確認するための検出動作である。
基板搬送装置17のアーム(図1参照)が、処理ユニット16内に侵入し、吸着プレート120の真上に位置する。また、リフトピン211が受け渡し位置に位置する(以上時点t0~t1)。この状態で、基板搬送装置17のアームが下降し、これによりウエハWがリフトピン211の上端の上に載り、ウエハWがアームから離れる。次いで、基板搬送装置17のアームが処理ユニット16から退出する。リフトピン211が処理位置まで下降し、その過程で、ウエハWが吸着プレート120の上面120Aに載る(時点t1)。
ウエハWが吸着プレート120に吸着されたら、ホットプレート140の温度が予め定められた温度(吸着プレート120上のウエハWがその後の処理に適した温度に加熱されるような温度)まで昇温するように、ホットプレート140のヒーター142への供給電力を調節する(時点t1~t3)。
次いで、処理液供給部700のノズルアームにより、薬液ノズル710が、ウエハWの中心部の真上に位置する。この状態で、薬液ノズル710から温調された薬液がウエハWの表面(上面)に供給される(時点t3~t4)。薬液の供給は、薬液の液面LSがウエハWの上面よりも上に位置するまで続けられる。このとき、周縁カバー体180の上部181が堰として作用し、薬液が回転テーブル100の外側にこぼれ落ちることを防止する。
薬液処理が終了したら、まず、給電部300からのヒーター142への給電を停止し(時点t4)、次いで、第2電極部161Bを下降位置に下降させる(時点t5)。先に給電を停止することにより、第2電極部161Bの下降時に電極間にスパークが生じることを防止することができる。
次に、回転テーブル100を低速回転とし、リンスノズル720をウエハWの中心部の真上に位置させ、リンスノズル720からリンス液を供給する(時点t6~t7)。これにより、上部181よりも半径方向内側の領域に残留している全ての薬液(ウエハW上に残留している薬液も含む)が、リンス液により洗い流される。
次に、回転テーブル100を高速回転にし、リンスノズル720からのリンス液の吐出を停止し、上部181よりも半径方向内側の領域に残留している全てのリンス液(ウエハW上に残留しているリンス液も含む)を、遠心力により外方に飛散させる(時点t7~t8)。これにより、ウエハWが乾燥する。
次に、切替装置(三方弁)156を切り替えて、吸引配管155Wの接続先を吸引装置157Wからパージガス供給装置159に変更する。これにより、プレート用の下面吸引流路溝121Pにパージガスを供給するとともに、基板用の下面吸引流路溝122Wを介して吸着プレート120の上面120Aの凹領域125Wにパージガスを供給する。これにより、吸着プレート120に対するウエハWの吸着が解除される(時点t10)。
100 回転テーブル
102 回転駆動機構
120 吸着プレート
129W 貫通穴
140 ベースプレート(ホットプレート)
150 吸引部(吸引/パージ部)
Claims (12)
- 少なくとも1つの吸引口が設けられた表面を有するベースプレートと、基板の非処理面に接触して前記基板を吸着する表面と、前記ベースプレートの前記表面と接触する裏面と、前記表面と前記裏面とを接続する少なくとも1つの吸着用貫通穴と、を有し、前記ベースプレートに対して着脱可能な吸着プレートと、を備えた回転テーブルと、
前記回転テーブルを回転軸線周りに回転させる回転駆動機構と、
前記ベースプレートの前記吸引口に吸引力を作用させ、前記吸引力を前記ベースプレートと前記吸着プレートとの間に作用させることにより前記ベースプレートと前記吸着プレートとを密着させ、かつ、前記少なくとも1つの吸着用貫通穴を介して前記吸引力を前記吸着プレートと前記基板との間に作用させることにより前記吸着プレートと前記基板とを密着させる吸引部と、
前記吸着プレートに前記基板を載置することおよび前記吸着プレートから前記基板を離すために前記基板を昇降させる複数のリフトピンと、
前記複数のリフトピンを昇降させるリフトピン昇降機構と、
を備え、
前記吸着プレートが予め定められた位置関係で前記ベースプレートに接触し、かつ、前記吸着プレートに予め定められた位置関係で前記基板が接触しているときに、前記各リフトピンが通過しうる位置に、前記吸着プレートおよび前記ベースプレートにリフトピン用貫通穴が設けられている、基板処理装置。 - 前記吸着プレートの表面に、前記少なくとも1つの吸着用貫通穴と連通する少なくとも1つの表面吸引流路溝が設けられ、前記吸着プレートの裏面に、前記ベースプレートの前記少なくとも1つの吸引口と連通する少なくとも1つの裏面吸引流路溝が設けられ、前記少なくとも1つの表面吸引流路溝が前記吸引力を前記吸着プレートの表面の面内に分散させる、請求項1記載の基板処理装置。
- 前記ベースプレートの前記少なくとも1つの吸引口は、第1吸引口と第2吸引口とを含み、
前記少なくとも1つの裏面吸引流路溝は、前記第1吸引口に連通する第1裏面吸引流路溝と、前記第2吸引口に連通する第2裏面吸引流路溝と、含み、
前記第1裏面吸引流路溝に作用する吸引力が前記ベースプレートと前記吸着プレートとを密着させ、前記第1裏面吸引流路溝が、前記吸引力を前記吸着プレートの裏面の面内に分散させ、
前記少なくとも1つの吸着用貫通穴は、前記第2裏面吸引流路溝と前記少なくとも1つの表面吸引流路溝とを連通させ、前記第2裏面吸引流路溝、前記少なくとも1つの吸着用貫通穴を介して前記少なくとも1つの表面吸引流路溝に作用する吸引力が前記吸着プレートと前記基板とを密着させる、
請求項2記載の基板処理装置。 - 前記表面吸引流路溝は同心円状に複数設けられ、前記吸着用貫通穴は複数設けられ、前記複数の吸着用貫通穴は前記表面吸引流路溝の各々に連通している、請求項2または3記載の基板処理装置。
- パージガスを供給するパージガス供給部と、
前記ベースプレートの前記少なくとも1つの吸引口のうちの少なくとも前記表面吸引流路溝に連通する吸引口に対して前記パージガス供給部が接続されている状態と、前記吸引部が接続されている状態とを切り替える切替部と、
をさらに備えた、請求項2から4のうちのいずれか一項に記載の基板処理装置。 - パージガスを供給するパージガス供給部をさらに備え、前記吸着プレートの表面の周縁部に、円周方向に連続的に延びるパージ流路溝が形成され、前記ベースプレートの前記表面に前記パージガス供給部と連通するパージガス供給口が設けられ、前記吸着プレートに、前記吸着プレートを厚さ方向に貫通して前記パージガス供給口と前記パージ流路溝とを連通させる連通孔が設けられ、前記パージガスは、前記吸着プレートと前記基板の周縁部との間に流体が進入することを阻止する、請求項1記載の基板処理装置。
- 前記ベースプレートは、電気ヒーターが設けられたホットプレートからなる、請求項1記載の基板処理装置。
- 前記吸着プレートは前記ホットプレートより薄い、請求項7記載の基板処理装置。
- 前記吸着プレートの表面は、中央部が周縁部よりも高いか、あるいは、周縁部が中央部よりも高い、請求項1記載の基板処理装置。
- 前記吸着プレートは、熱伝導率が150W/m・k以上の熱伝導性セラミックスから形成されている、請求項1記載の基板処理装置。
- 前記回転軸線の方向から見て、前記吸着プレートおよび前記ベースプレートは円形である、請求項1記載の基板処理装置。
- 前記回転軸線の方向から見て、前記吸着プレートは、前記基板の直径以上の直径を有する、請求項11記載の基板処理装置。
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