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    • 6. 发明专利
    • Reflection image forming electron microscope and pattern defect inspection device using it
    • 使用它的反射图像形成电子显微镜和图案缺陷检查装置
    • JP2006032107A
    • 2006-02-02
    • JP2004208871
    • 2004-07-15
    • Hitachi High-Technologies Corp株式会社日立ハイテクノロジーズ
    • MURAKOSHI HISAYAHASEGAWA MASAKITODOKORO HIDEO
    • H01J37/29H01J37/147H01L21/66
    • H01J37/29H01J37/147H01J2237/1508H01J2237/2538H01J2237/28
    • PROBLEM TO BE SOLVED: To provide a reflection image forming electron microscope capable of serving to both mirror electron microscope observation and low energy electron microscope observation in the same field of view; and to provide a defect inspection device capable of detecting a pattern defect part formed on a specimen with high resolution and at high speed using the reflection image forming electron microscope.
      SOLUTION: This reflection image forming electron microscope comprises an irradiation lens system irradiating an electron beam outgoing from an electron source 1 into the specimen 7 as a sheet irradiation electron beam 301, an image forming lens system forming the image of the specimen by projecting and enlarging the reflection electron beam 302 outgoing from the specimen 7, and a beam separator 4 separating the irradiation electron beam 301 and the reflection electron beam 302. The beam separator 4 consists of an ExB deflector, wherein an electric field and a magnetic field are orthogonal and superimposed. A control means 28 is provided for controlling the deflector to put the reflection electron beam 302 in the Wien condition, wherein deflection effects by an electric field and a magnetic field are canceled by each other, with keeping the deflection angle approximately constant for the irradiation electron beam 301.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种能够在相同视野中用于镜像电子显微镜观察和低能量电子显微镜观察的反射成像电子显微镜; 并且提供一种能够使用反射成像电子显微镜以高分辨率和高速度检测形成在样本上的图案缺陷部分的缺陷检查装置。 解决方案:该反射成像电子显微镜包括:照射透镜系统,其将从电子源1射出的电子束照射到作为片材照射电子束301的样本7中;成像透镜系统,通过 投射和放大从样品7出射的反射电子束302以及分离照射电子束301和反射电子束302的光束分离器4.光束分离器4由ExB偏转器构成,其中电场和磁场 正交和叠加。 设置控制装置28,用于控制偏转器将反射电子束302置于维恩状态,其中由电场和磁场引起的偏转效应彼此消除,同时保持照射电子的偏转角近似恒定 光束301.版权所有(C)2006,JPO&NCIPI
    • 7. 发明专利
    • Low vacuum scanning electron microscope
    • 低真空扫描电子显微镜
    • JP2006032011A
    • 2006-02-02
    • JP2004206108
    • 2004-07-13
    • Hitachi Sci Syst Ltd株式会社日立サイエンスシステムズ
    • NISHIMURA MASAKOYAMADA MITSUHIKO
    • H01J37/28
    • H01J37/28H01J2237/04756H01J2237/188H01J2237/2538H01J2237/2608
    • PROBLEM TO BE SOLVED: To realize a high resolution observation by a low acceleration voltage of 5 kV or less while the pressure of the testpiece chamber is kept high.
      SOLUTION: The testpiece chamber 1 is made as a dual structure and an inner testpiece chamber 10a for maintaining low vacuum is provided inside the outer testpiece chamber 10b of high vacuum. A comparatively high negative voltage, for example, -1 to -9 kV for slowing down electrons immediately before the test piece is applied between the outer testpiece chamber 10b and the inner testpiece chamber 10a, and when the incident electron beams 7 pass an objective lens 9, thin electron beams maintaining high energy with small aberration are formed, and those electron beams are decelerated immediately before the test piece 11, thereby obtaining high resolution at low acceleration voltage.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:在试验室的压力保持较高的情况下,通过5kV以下的低加速电压实现高分辨率观察。 解决方案:将试件室1制成双重结构,并且在高真空的外部试验室10b内部设置用于维持低真空的内部试验室10a。 比较高的负电压,例如在试验片施加在外部试验室10b和内部试验室10a之前将电子减速的-1至-9kV,当入射的电子束7通过物镜 如图9所示,形成了具有小像差的保持高能量的薄电子束,并且这些电子束在测试片11之前被减速,从而在低加速电压下获得高分辨率。 版权所有(C)2006,JPO&NCIPI