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    • 26. 发明授权
    • Electrostatic deflection control circuit and method of electronic beam measuring apparatus
    • 电子偏转控制电路及电子束测量装置的方法
    • US08044369B2
    • 2011-10-25
    • US12327274
    • 2008-12-03
    • Hiroshi Sasaki
    • Hiroshi Sasaki
    • G21K1/08
    • H01J37/24H01J2237/1516H01J2237/2814
    • An electrostatic deflection circuit and method of an electronic beam measuring apparatus which can achieve the high precision of the electronic beam measuring and contribute to the simplification of the structure of the apparatus is provided. In an analog arithmetic circuit included in an analog operation part constituting an electrostatic deflection circuit, output voltages of multipliers are added and output by an adder. When the magnification is low, as the side of an ordinarily closed contact is closed driven by a relay driving circuit, the output of the adder is amplified by a high gain amplifier with a high amplification factor and applied to an electrostatic deflecting board. When the magnification is high, the side of an ordinarily open contact is closed and it is amplified by a low gain amplifier with a low amplification factor and applied to the electrostatic deflecting board in the same way.
    • 提供一种电子束测量装置的静电偏转电路和方法,其可以实现电子束测量的高精度并且有助于简化装置的结构。 在包含在构成静电偏转电路的模拟操作部分中的模拟运算电路中,乘法器的输出电压由加法器相加并输出。 当放大率低时,由于通常由闭合触点的一侧由继电器驱动电路驱动闭合,加法器的输出由具有高放大系数的高增益放大器放大并施加到静电偏转板。 当放大率高时,常开触点的一侧闭合,并由具有低放大系数的低增益放大器放大,并以相同的方式施加到静电偏转板。
    • 28. 发明授权
    • Scanning electron microscope
    • 扫描电子显微镜
    • US07075078B2
    • 2006-07-11
    • US11064819
    • 2005-02-25
    • Yoichi OseHideo TodokoroMakoto EzumiMitsugu Sato
    • Yoichi OseHideo TodokoroMakoto EzumiMitsugu Sato
    • G01N23/00G21K7/00
    • H01J37/147H01J37/1471H01J37/153H01J37/28H01J2237/12H01J2237/14H01J2237/1516H01J2237/244H01J2237/2817
    • A disclosed scanning electron microscope (SEM) is intended to prevent deterioration of resolution due to increase in off-axis aberration resulting from a deviation of a primary electron bean from the optical axis of the microscope. An example of the SEM has an image shifting deflector system including two deflectors disposed respectively at upper and lower stages. The deflector at the lower stage is a multipole electrostatic deflecting electrode and is disposed in an objective. Even if the distance of image shifting is great, an image of a high resolution can be formed, and dimensions can be measured in a high accuracy. The SEM is able to achieve precision inspection at a high throughput when applied to inspection in semiconductor device fabricating processes that process a wafer having a large area and provided with very minute circuit elements.
    • 所公开的扫描电子显微镜(SEM)旨在防止由于一次电子束与显微镜的光轴偏离而引起的离轴像差增加而导致的分辨率的劣化。 SEM的示例具有包括分别设置在上部和下部的两个偏转器的图像偏移偏转器系统。 下级的偏转器是多极静电偏转电极,并设置在物镜中。 即使图像偏移的距离大,也可以形成高分辨率的图像,能够高精度地测量尺寸。 当在用于处理具有大面积的晶片并且具有非常微小的电路元件的半导体器件制造工艺中进行检查时,SEM能够以高产量实现精确检查。
    • 29. 发明授权
    • Electrostatic deflecting electrode unit for use in charged beam
lithography apparatus and method of manufacture the same
    • 用于带电光束光刻设备的静电偏转电极单元及其制造方法
    • US5929452A
    • 1999-07-27
    • US42809
    • 1998-03-17
    • Shusuke YoshitakeHiroaki HirazawaShigeru Wakayama
    • Shusuke YoshitakeHiroaki HirazawaShigeru Wakayama
    • H01J9/14H01J37/147H01J37/305H01L21/027
    • H01J37/3174B82Y10/00B82Y40/00H01J37/1477H01J2237/1516
    • A method of manufacturing an electrostatic deflecting electrode unit for use in charged beam lithography apparatus comprises a first step of preparing a hollow cylindrical member made of metal, a second step of forming grooves of a predetermined width in a cylindrical member in the direction of radius thereof and along lines that equally divides the periphery of the cylindrical member into eight sections, a third step of attaching a ring-like member made of an insulating material to each of end surfaces of the cylindrical member which are opposed to each other in the direction of axis of the cylindrical member in such a way that bottom portions of the grooves are exposed, and a fourth step of dividing the cylindrical member into eight electrodes by extending the bottom portions of the grooves in the direction of radius of the cylindrical member to reach the hole of the cylindrical member with the ring-like members attached. The dimensional precision of the electrostatic deflecting electrode is determined by the precision of the cylindrical member. Thus, the deflecting electrode unit is easy to process and assemble with precision.
    • 一种制造用于带电光束光刻设备的静电偏转电极单元的方法包括:制备由金属制成的中空圆柱形构件的第一步骤,在圆柱形构件的半径方向上形成具有预定宽度的槽的第二步骤 并且沿着将圆柱形构件的周边等分成八个部分的线,第三步骤是将由绝缘材料制成的环形构件连接到圆柱形构件的每个端面上,该圆柱形构件彼此相对的方向 圆柱形构件的轴线以这样的方式使得凹槽的底部暴露;以及第四步骤,通过沿着圆柱形构件的半径方向延伸凹槽的底部,将圆柱形构件分成八个电极,以达到 圆柱形构件的孔与所述环状构件相连。 静电偏转电极的尺寸精度由圆柱形构件的精度决定。 因此,偏转电极单元易于精加工和组装。