JP6735549B2 - 基板処理装置、基板処理方法及びリング状部材 - Google Patents
基板処理装置、基板処理方法及びリング状部材 Download PDFInfo
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- JP6735549B2 JP6735549B2 JP2015216320A JP2015216320A JP6735549B2 JP 6735549 B2 JP6735549 B2 JP 6735549B2 JP 2015216320 A JP2015216320 A JP 2015216320A JP 2015216320 A JP2015216320 A JP 2015216320A JP 6735549 B2 JP6735549 B2 JP 6735549B2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000012495 reaction gas Substances 0.000 claims description 13
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Description
該処理室内に設けられ、基板を保持可能な窪み状の基板保持領域が周方向に沿って表面に複数設けられた回転テーブルと、
前記基板保持領域の周囲であって、回転テーブルの一部の領域にのみ、前記基板保持領域の外縁に接するように前記表面に設けられ、凹凸パターンの形成により前記表面の表面積を平坦面よりも増加させた表面積増加領域と、
前記回転テーブルの前記表面に処理ガスを供給可能な処理ガス供給手段と、を有する。
該処理室内に設けられた回転テーブルと、
該回転テーブルの周方向に沿って表面に複数設けられ、基板よりも径が大きく、該基板の側面と内周面とを接触させることなく該基板を載置可能な窪み状の基板載置領域と、
該基板載置領域の底面内の前記内周面と離れた位置であって、前記基板の外周形状に沿い、前記回転テーブルの回転による遠心力に抗して前記基板を保持可能な位置に設けられた少なくとも3本以上の基板保持用ピンと、
前記回転テーブルの前記表面に処理ガスを供給可能な処理ガス供給手段と、を有し、
前記基板載置領域は、前記基板の載置面をなす第1の深さ領域と、前記基板の載置面よりも外側にあり、前記第1の深さ領域よりも深い第2の深さ領域とを有し、前記基板保持用ピンは前記第1の深さ領域に設けられる。
前記基板保持領域の周囲であって、回転テーブルの一部の領域のみの前記基板保持領域の外縁に接する位置に、平坦面よりも表面積を増加させる凹凸パターンが形成された表面積増加領域が設けられた状態で前記回転テーブルを回転させる工程と、
前記回転テーブルを回転させながら前記基板に前記処理ガスを供給し、前記基板を処理する工程と、を有する。
前記回転テーブルの前記基板保持領域の周囲に設けられた円環状の窪みに載置可能な円環形状を有するとともに、底面に前記窪みの形状に係合する係止構造部を有し、
上面に、平坦面よりも表面積を増加させる凹凸パターンを有する。
本発明の第1の実施形態に係る基板処理装置について説明する。図1は、本発明の第1の実施形態に係る基板処理装置の概略断面図である。図2は、本発明の第1の実施形態に係る基板処理装置の概略平面図である。図3は、本発明の第1の実施形態に係る基板処理装置における分離領域を説明するための一部断面図である。図4は、本発明の第1の実施形態に係る基板処理装置の他の断面を示す一部断面図である。
<基板処理装置>
次に、本発明の第2の実施形態に係る基板処理装置について説明する。第2の実施形態では、第1の実施形態と異なる点を中心に説明し、第1の実施形態と同一又は類似する点については、説明を簡略化又は省略する。
次に、本発明の第2の実施形態に係る基板処理装置を用いた基板処理方法の一例について説明する。以下では、ウエハW上に形成された凹形状パターンの1つであるビア内にSiO2膜を形成する方法を例として説明する。なお、以下の説明において、第1の実施形態に係る基板処理装置の説明で用いた図1〜6を必要に応じて参照するが、以下の説明では、図1〜6における「回転テーブル2」を「回転テーブル2a」、「凹部24」を「凹部24a」と適宜読み替えて参照されたい。
図17は、本発明の第3の実施形態に係る基板処理装置の回転テーブル2bの一例を示した図である。第3の実施形態に係る基板処理装置は、基板保持領域として機能する凹部24dの周囲に凹凸パターンを有する表面積増加領域27bが設けられている点で、第2の実施形態に係る基板処理装置と共通するが、凹凸パターンが回転テーブル2bの表面に直接形成されている点で、第2の実施形態に係る基板処理装置と異なっている。
次に、本発明の第2及び第3の実施形態に係る基板処理装置、基板処理方法を発明するに至るまでに行った実験結果について説明する。
2、2a、2b 回転テーブル
24、24a、24d 凹部
24b 外周溝
24c 土手(隆起部)
25 ピン
26 設置窪み
27、27b 表面積増加領域
27a 溝
28 リング状部材
31、32 処理ガスノズル
41、42 分離ガスノズル
90 エッチングガス供給部
91 プラズマ生成部
P1、P2、P3 処理領域
W ウエハ
Claims (21)
- 処理室と、
該処理室内に設けられ、基板を保持可能な窪み状の基板保持領域が周方向に沿って表面に複数設けられた回転テーブルと、
前記基板保持領域の周囲であって、回転テーブルの一部の領域にのみ、前記基板保持領域の外縁に接するように前記表面に設けられ、凹凸パターンの形成により前記表面の表面積を平坦面よりも増加させた表面積増加領域と、
前記回転テーブルの前記表面に処理ガスを供給可能な処理ガス供給手段と、を有する基板処理装置。 - 前記表面積増加領域は、前記基板保持領域の外周に沿った円環形状を有する請求項1に記載の基板処理装置。
- 処理室と、
該処理室内に設けられ、基板を保持可能な窪み状の基板保持領域が周方向に沿って表面に複数設けられるとともに、前記基板保持領域を取り囲む略円環状の窪みを有する回転テーブルと、
前記窪み内に設置され、上面が凹凸パターンを有し、表面積を前記回転テーブルの表面の平坦面よりも増加させた表面積増加領域を含むリング状部材と、
前記回転テーブルの前記表面に処理ガスを供給可能な処理ガス供給手段と、を有する基板処理装置。 - 前記リング状部材は、石英又はシリコンからなる請求項3に記載の基板処理装置。
- 前記リング状部材は、複数ピースに分割され、全体として前記リング状部材を構成する請求項3又は4に記載の基板処理装置。
- 前記表面積増加領域は、前記基板保持領域の最外周同士を直線的に結んだ領域を少なくとも含む領域の前記基板保持領域以外の略全体に設けられた請求項1に記載の基板処理装置。
- 前記表面積増加領域は、前記回転テーブルの前記表面に前記凹凸パターンが形成された領域である請求項6に記載の基板処理装置。
- 前記凹凸パターンは、前記リング状部材の前記上面の平坦面に溝が形成されたパターンである請求項3乃至5のいずれか一項に記載の基板処理装置。
- 前記凹凸パターンは、前記平坦面の表面積を2〜30倍に増加させるパターンである請求項1乃至8のいずれか一項に記載の基板処理装置。
- 処理室と、
該処理室内に設けられた回転テーブルと、
該回転テーブルの周方向に沿って表面に複数設けられ、基板よりも径が大きく、該基板の側面と内周面とを接触させることなく該基板を載置可能な窪み状の基板載置領域と、
該基板載置領域の底面内の前記内周面と離れた位置であって、前記基板の外周形状に沿い、前記回転テーブルの回転による遠心力に抗して前記基板を保持可能な位置に設けられた少なくとも3本以上の基板保持用ピンと、
前記回転テーブルの前記表面に処理ガスを供給可能な処理ガス供給手段と、を有し、
前記基板載置領域は、前記基板の載置面をなす第1の深さ領域と、前記基板の載置面よりも外側にあり、前記第1の深さ領域よりも深い第2の深さ領域とを有し、前記基板保持用ピンは前記第1の深さ領域に設けられた基板処理装置。 - 前記回転テーブルは石英からなる請求項1乃至10のいずれか一項に記載の基板処理装置。
- 前記処理ガス供給手段は、エッチングガスを供給可能なエッチングガス供給手段であり、
該エッチングガス供給手段は、前記回転テーブルの周方向に沿って設けられたエッチング領域に備えられた請求項1乃至11のいずれか一項に記載の基板処理装置。 - 前記エッチング領域と前記回転テーブルの周方向において離間して設けられ、成膜用原料ガス供給手段を備えた原料ガス供給領域と、
前記回転テーブルの周方向において前記原料ガス供給領域と前記エッチング領域との間に設けられ、成膜用反応ガス供給手段を備えた反応ガス供給領域と、を更に有する請求項12に記載の基板処理装置。 - 前記エッチング領域と前記原料ガス供給領域との間、及び前記原料ガス供給領域と前記反応ガス供給領域との間には、パージガスを前記回転テーブルの前記表面に供給するパージガス供給手段を有する請求項13に記載の基板処理装置。
- 処理室内の回転テーブル上に周方向に沿って複数設けられた窪み状の基板保持領域に基板を保持し、前記回転テーブルを回転させながら前記基板に処理ガスを供給して基板を処理する基板処理方法であって、
前記基板保持領域の周囲であって、回転テーブルの一部の領域のみの前記基板保持領域の外縁に接する位置に、平坦面よりも表面積を増加させる凹凸パターンが形成された表面積増加領域が設けられた状態で前記回転テーブルを回転させる工程と、
前記回転テーブルを回転させながら前記基板に前記処理ガスを供給し、前記基板を処理する工程と、を有する基板処理方法。 - 処理室内の回転テーブル上に周方向に沿って複数設けられた窪み状の基板保持領域に基板を保持し、前記回転テーブルを回転させながら前記基板に処理ガスを供給して基板を処理する基板処理方法であって、
前記基板保持領域の周囲の前記基板保持領域を取り囲む位置に設けられた窪み内に、前記回転テーブルの平坦面よりも表面積を増加させる凹凸パターンが形成された表面積増加領域を上面に有するリング状部材が設けられた状態で前記回転テーブルを回転させる工程と、
前記回転テーブルを回転させながら前記基板に前記処理ガスを供給し、前記基板を処理する工程と、を有する基板処理方法。 - 前記基板を処理する工程は、前記基板にエッチングガスを供給して前記基板をエッチング処理する工程を含む請求項16に記載の基板処理方法。
- 前記基板を処理する工程は、前記基板に成膜ガスを供給して前記基板を成膜処理する工程を含む請求項17に記載の基板処理方法。
- 回転テーブルの所定の基板保持領域に基板を保持して前記基板を処理する基板処理装置に用いられるリング状部材であって、
前記回転テーブルの前記基板保持領域の周囲に設けられた円環状の窪みに載置可能な円環形状を有するとともに、底面に前記窪みの形状に係合する係止構造部を有し、
上面に、平坦面よりも表面積を増加させる凹凸パターンを有するリング状部材。 - 周方向において複数に分割され、全体で前記円環形状を構成する請求項19に記載のリング状部材。
- 前記凹凸パターンは、前記平坦面よりも表面積を2〜30倍に増加させるパターンである請求項19又は20に記載のリング状部材。
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