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    • 7. 发明授权
    • Electron beam writing method and apparatus for carrying out the same
    • 电子束写入方法及其执行装置
    • US5759423A
    • 1998-06-02
    • US563329
    • 1995-11-28
    • Yasunari SohdaYasuhiro SomedaHiroyuki ItohKatsuhiro KawasakiNorio Saitou
    • Yasunari SohdaYasuhiro SomedaHiroyuki ItohKatsuhiro KawasakiNorio Saitou
    • G03F7/20H01J37/317H01L21/027B44C1/22H01L21/00
    • B82Y10/00B82Y40/00H01J37/3174H01J2237/31776
    • An electron beam writing apparatus comprises: an electron beam source for projecting an electron beam; a first mask provided with a first rectangular aperture for passing the electron beam projected by the electron beam source to shape the electron beam in a primary shaped beam having a rectangular cross section; a second mask provided with a second rectangular aperture for passing the primary shaped beam to shape the primary shaped beam in a secondary shaped beam having a rectangular cross section, and triangular apertures for passing the primary shaped beam to form a secondary shaped beam having a triangular cross section; a first electron beam deflecting system for moving the primary shaped beam on the surface of the second mask; and a second electron beam deflecting system for moving the secondary shaped beam on the surface of a workpiece on which a pattern is to be written. Each of the triangular apertures is formed in a size such that the triangular aperture can be entirely covered with a rectangular image formed by the first shaped beam on the surface of the second mask.
    • 电子束写入装置包括:用于投射电子束的电子束源; 第一掩模,设置有第一矩形孔,用于使由电子束源投影的电子束通过,以将电子束形成为具有矩形横截面的主要形状的梁; 第二掩模,其设置有第二矩形孔,用于使主要成形梁通过,以形成具有矩形截面的次级成形梁的主要成形梁,以及三角形孔,用于使初级成形梁通过以形成具有三角形的二次成形梁 横截面; 第一电子束偏转系统,用于将第一形状光束移动到第二掩模的表面上; 以及用于在待写入图案的工件的表面上移动二次成形光束的第二电子束偏转系统。 每个三角形孔形成为使得三角形孔可以被由第二掩模的表面上的第一成形束形成的矩形图像完全覆盖的尺寸。