JP5990486B2 - 微細構造転写用シームレスモールドの製造方法 - Google Patents
微細構造転写用シームレスモールドの製造方法 Download PDFInfo
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Description
(条件1)
表面12cのうねりの振幅(X)が0.03μm未満の場合
(条件2)
うねりの間隔が1mm未満の場合
(条件3)
うねりの間隔が100mm以上の場合
(条件4)
うねりの振幅(X)が0.03μm以上で、うねりの間隔が1mm以上100mm未満である場合
なお、上記回転線速とうねりの間隔の下限との間は
(うねり間隔の上限)=|10×回転線速(m/s)|mm以上の関係となり、
回転線速とうねりの間隔の上限との間は
(うねり間隔の下限)=|0.1×回転線速(m/s)|mm未満の関係となる。
長さ50mm、74mmφのカーボンファイバー製のコアに、同じ長さの厚さ3mmの円筒状の石英ガラスを、導電性エポキシ樹脂を介して被せて固定して、石英ガラス製の基材(スリーブロール)を3つ準備した。なお、ロールの片面にはカーボンファイバー製のコアの中心線と一致するように長さ50mm、30mmφのシャフトを取り付けた。
12 レジスト積層体
12a 基材
12b レジスト層
12c 表面
13 スピンドルモーター
14,16 半導体レーザー
15 対物レンズ
17 ビームスプリッタ
18 シリンドリカルレンズ
19 光検出器
19a〜19d 受光領域
Claims (8)
- 長尺体である基材に第1レーザー光を照射して前記基材の表面のうねりを評価する工程と、前記評価において良品と判定された基材上に熱反応型レジスト又は光反応型レジストのレジスト層を形成する工程と、前記レジスト層に対して第2レーザー光を照射して微細モールドパターンを形成する工程と、を具備し、
前記第1レーザー光の照射により前記基材の表面のうねりの振幅と間隔を測定し、前記うねりの振幅と間隔に基づいて、前記基材の表面のうねりの状態を評価することを特徴とする微細構造転写用シームレスモールドの製造方法。 - 前記基材の表面のうねりの振幅と間隔の測定は、前記基材を回転させながら行うことを特徴とする請求項1記載の微細構造転写用シームレスモールドの製造方法。
- 前記第1レーザー光が照射された前記基材からの反射光を光検出器で受光した際に得られた光強度信号をフーリエ変換して得られる周波数スペクトルを用いて前記基材の表面のうねりを評価することを特徴とする請求項1又は請求項2記載の微細構造転写用シームレスモールドの製造方法。
- 前記光検出器は複数に分割された受光領域を備えており、前記光強度信号は、各受光領域で受光した光強度から求められることを特徴とする請求項3記載の微細構造転写用シームレスモールドの製造方法。
- 前記周波数スペクトルにおける100Hzから10kHzの周波数帯に、前記光強度信号の換算電圧値で3mVのピークを有しないときに前記基材を良品と判定することを特徴とする請求項3又は請求項4記載の微細構造転写用シームレスモールドの製造方法。
- 前記レジスト層を有する基材を回転線速10m/sで回転させながら前記第1レーザー光を照射して前記基材の表面のうねりを評価する際に、前記基材の表面のうねりの間隔が1mm未満であるときに前記基材を良品と判定することを特徴とする請求項3又は請求項4記載の微細構造転写用シームレスモールドの製造方法。
- 前記レジスト層を有する基材を回転線速10m/sで回転させながら前記第1レーザー光を照射して前記基材の表面のうねりを評価する際に、前記基材の表面のうねりの間隔が100mm以上であるときに前記基材を良品と判定することを特徴とする請求項3又は請求項4記載の微細構造転写用シームレスモールドの製造方法。
- 前記第1レーザー光の出力は、前記第2レーザー光の出力の5%以下であることを特徴とする請求項1から請求項7のいずれかに記載の微細構造転写用シームレスモールドの製造方法。
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