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    • 13. 发明授权
    • Scanning electron microscope
    • 扫描电子显微镜
    • US5608218A
    • 1997-03-04
    • US359761
    • 1994-12-20
    • Mitsugu SatoYoichi OseSatoru FukuharaHideo TodokoroMakoto Ezumi
    • Mitsugu SatoYoichi OseSatoru FukuharaHideo TodokoroMakoto Ezumi
    • H01J37/22H01J37/05H01J37/244H01J37/28
    • H01J37/28H01J2237/225H01J2237/24495H01J2237/281
    • A scanning electron microscope suitable for producing an image of high resolution by detecting secondary electrons and backscattered electrons generated from a specimen at a low accelerating voltage in a separate or synthesis fashion. In the scanning electron microscope electric and magnetic fields for separating trajectories of backscattered electrons and secondary electrons generated from a specimen are established, and a backscattered electron detector for detecting generated backscattered electrons is disposed on the trajectory of the backscattered electrons. According to the microscope, since secondary electrons and backscattered electrons can be detected efficiently in a separate fashion even at a low accelerating voltage of several kilovolts or less and besides the detector does not exert the deflection action on a primary electron beam, backscattered and secondary electron images of high resolution can be obtained.
    • 一种扫描电子显微镜,其适用于通过以单独或合成的方式检测由低速加速电压下的样品产生的二次电子和反向散射电子来产生高分辨率的图像。 在扫描电子显微镜中,建立用于分离由样品产生的背散射电子和二次电子的轨迹的电场和磁场,并且用于检测产生的反向散射电子的反向散射电子检测器设置在背散射电子的轨迹上。 根据显微镜,由于二次电子和后向散射电子可以以几千伏或更小的低加速电压以单独的方式被有效地检测,此外,检测器不会对一次电子束,后向散射和二次电子施加偏转作用 可以获得高分辨率的图像。
    • 15. 发明授权
    • Charged particle beam device
    • 带电粒子束装置
    • US5160884A
    • 1992-11-03
    • US647423
    • 1991-01-29
    • Hideo TodokoroHiroyuki ShinadaSatoru Fukuhara
    • Hideo TodokoroHiroyuki ShinadaSatoru Fukuhara
    • G01R31/302G01Q30/04G01R31/305H01J37/28
    • G01R31/305
    • A charged particle beam device radiates a primary charged particle beam of pulse form on a surface of a specimen, once in each clock period, in synchronism with a clock signal that determines an operating period of an internal operating signal of the specimen. A secondary electron or a reflected electron is detected after it is emitted from the surface of the specimen when the primary charged particle beam of pulse form is irradiated. Each detected signal pulse which is generated from the detecting means once in each period of said clock is sampled at two or more positions in a range including the peak value, and data which correspond to the sum or the averaged value calculated from the sampling values of a plurality of the positions are formed. An internal operating signal waveform of said specimen is displayed by using the data, and therefore the internal operating signal waveform of the specimen can be observed and measured with high measuring accuracy and with high efficiency.
    • 带电粒子束装置在每个时钟周期内,与确定样本的内部操作信号的操作周期的时钟信号同步地,在试样的表面上辐射脉冲形式的初级带电粒子束。 当照射脉冲形式的初级带电粒子束后,从样品表面发射二次电子或反射电子。 在所述时钟的每个周期中从检测装置产生的每个检测到的信号脉冲在包括峰值的范围内的两个或更多个位置被采样,并且对应于从根据 形成多个位置。 通过使用该数据显示所述样本的内部操作信号波形,因此可以以高测量精度和高效率观察和测量样本的内部操作信号波形。