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    • 13. 发明授权
    • Charged particle beam trajectory corrector and charged particle beam apparatus
    • 带电粒子束轨迹校正器和带电粒子束装置
    • US07875858B2
    • 2011-01-25
    • US12349708
    • 2009-01-07
    • Hiroyuki ItoYuko SasakiRyoichi IshiiTakashi Doi
    • Hiroyuki ItoYuko SasakiRyoichi IshiiTakashi Doi
    • H01J1/50G21K1/08G21K1/093
    • H01J37/153H01J37/145H01J37/28H01J2237/1534
    • The invention relates to a trajectory correction method for a charged particle beam, and provides a low-cost, high accuracy and high-resolution converging optical system for use with a charged particle beam to solve problems with conventional aberration correction systems. To this end, the present invention uses a configuration which forms electromagnetic field which is concentrated towards a center of a beam trajectory axis, causes oblique of the beam to make use of lens effects and bend the trajectory, and consequently, cancels out large external side non-linear effects such a spherical aberration of the electron lens. Specifically, the configuration generates an electric field concentration in a simple manner by providing electrodes above the axis and applying voltages to the electrodes. Further, the above configuration can be realized trough operations using lenses and deflectors with incident axes and image formation positions that are normal.
    • 本发明涉及一种用于带电粒子束的轨迹校正方法,并且提供了一种用于带电粒子束的低成本,高精度和高分辨率会聚光学系统,以解决常规像差校正系统的问题。 为此,本发明使用形成朝向光束轨迹轴的中心集中的电磁场的结构,使得光束的倾斜利用透镜效果并弯曲轨迹,因此抵消了大的外侧 电子透镜的非线性效应如球面像差。 具体地说,该配置通过在轴上方设置电极并向电极施加电压,以简单的方式产生电场浓度。 此外,可以通过使用具有入射轴和成像位置的透镜和偏转器的槽操作来实现上述配置。
    • 15. 发明授权
    • Charged particle beam apparatus
    • 带电粒子束装置
    • US07435960B2
    • 2008-10-14
    • US11808376
    • 2007-06-08
    • Makoto SuzukiKenji TanimotoYuko Sasaki
    • Makoto SuzukiKenji TanimotoYuko Sasaki
    • H01J37/28H01J37/256
    • H01J37/21H01J37/265H01J37/28H01J2237/216H01J2237/24592H01J2237/2487H01J2237/2817H01J2237/2826
    • A charged particle beam apparatus obtains an image by detecting a generation signal inclusively indicative of secondary electrons generated from a specimen. The apparatus has an input unit for inputting current and voltage values to be applied to a charged particle optical system through which the charged particle beam travels, a memory unit for storing shape, position and physical properties of the charged particle optical system and accuracy of the applied current or voltage, an electromagnetic field calculation unit for calculating an electromagnetic field near a path of the charged particle beam, a charged particle trajectory calculation unit for calculating a trajectory of the charged particle beam in the calculated electromagnetic field, a memory unit for storing a result of the trajectory calculation and a controller for controlling the charged particle optical system on the basis of the result of the trajectory calculation.
    • 带电粒子束装置通过检测包含从样本产生的二次电子的生成信号来获得图像。 该装置具有用于输入要施加到带电粒子光束通过的带电粒子光学系统的电流和电压值的输入单元,用于存储带电粒子光学系统的形状,位置和物理特性的存储单元以及 施加电流或电压的电磁场计算单元,用于计算带电粒子束路径附近的电磁场的电磁场计算单元,用于计算计算出的电磁场中的带电粒子束的轨迹的带电粒子轨迹计算单元,存储 轨迹计算的结果和基于轨迹计算结果来控制带电粒子光学系统的控制器。
    • 17. 发明授权
    • Charged particle beam apparatus
    • 带电粒子束装置
    • US07241996B2
    • 2007-07-10
    • US11183906
    • 2005-07-19
    • Makoto SuzukiKenji TanimotoYuko Sasaki
    • Makoto SuzukiKenji TanimotoYuko Sasaki
    • H01J37/28H01J37/256
    • H01J37/21H01J37/265H01J37/28H01J2237/216H01J2237/24592H01J2237/2487H01J2237/2817H01J2237/2826
    • A charged particle beam apparatus obtains an image by detecting a generation signal inclusively indicative of secondary electrons generated from a specimen. The apparatus has an input unit for inputting current and voltage values to be applied to a charged particle optical system through which the charged particle beam travels, a memory unit for storing shape, position and physical properties of the charged particle optical system and accuracy of the applied current or voltage, an electromagnetic field calculation unit for calculating an electromagnetic field near a path of the charged particle beam, a charged particle trajectory calculation unit for calculating a trajectory of the charged particle beam in the calculated electromagnetic field, a memory unit for storing a result of the trajectory calculation and a controller for controlling the charged particle optical system on the basis of the result of the trajectory calculation.
    • 带电粒子束装置通过检测包含从样本产生的二次电子的生成信号来获得图像。 该装置具有用于输入要施加到带电粒子光束通过的带电粒子光学系统的电流和电压值的输入单元,用于存储带电粒子光学系统的形状,位置和物理特性的存储单元以及 施加电流或电压的电磁场计算单元,用于计算带电粒子束路径附近的电磁场的电磁场计算单元,用于计算计算出的电磁场中的带电粒子束的轨迹的带电粒子轨迹计算单元,存储 轨迹计算的结果和基于轨迹计算结果来控制带电粒子光学系统的控制器。