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    • 2. 发明专利
    • Charged particle beam device
    • 充电颗粒光束装置
    • JP2014002835A
    • 2014-01-09
    • JP2012135297
    • 2012-06-15
    • Hitachi High-Technologies Corp株式会社日立ハイテクノロジーズ
    • TACHIBANA ICHIROSUZUKI NAOMASA
    • H01J37/21
    • H01J37/21H01J37/10H01J37/147H01J37/263H01J37/28H01J2237/04756H01J2237/0492H01J2237/063H01J2237/10H01J2237/15H01J2237/21H01J2237/244H01J2237/2602H01J2237/281
    • PROBLEM TO BE SOLVED: To resolve a problem that, in the case that signal electrons are detected by energy selection by performing control so as to combine retarding and boosting for the purpose of deep-hole observation and the like, although magnetic variation of an objective lens must be used for focus adjustment, throughput is reduced because of a poor responsibility of magnetic variation.SOLUTION: A charged particle beam device comprises: an electron source generating a primary electron beam; an objective lens converging the primary electron beam; a deflector deflecting the primary electron beam; a detector detecting secondary electrons generated from a sample due to the irradiation of the primary electron beam or reflected electrons; an electrode having a hole through which the primary electron beam passes; a voltage control power supply applying a negative voltage to the electrode; and a retarding voltage control power supply applying a negative voltage to the sample to generate such an electric field that decelerates the primary electron beam on the sample. Focus adjustment is performed while making constant a difference between the voltage applied to the electrode and the voltage applied to the sample.
    • 要解决的问题:为了解决在通过进行控制的能量选择来检测信号电子以便进行深孔观察等的延迟和升压的组合的情况下,尽管目标的磁性变化 必须使用镜头进行焦点调整,因为磁性变化的负担很小,所以吞吐量降低。解决方案:带电粒子束装置包括:产生一次电子束的电子源; 会聚该一次电子束的物镜; 偏转器偏转一次电子束; 检测器,其检测由于一次电子束或反射电子的照射而从样品产生的二次电子; 具有一次电子束通过的孔的电极; 向所述电极施加负电压的电压控制电源; 以及向样品施加负电压的延迟电压控制电源,以产生使样品上的一次电子束减速的电场。 在施加到电极的电压和施加到样品的电压之间恒定地进行聚焦调整。