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    • 21. 发明专利
    • Focused ion beam apparatus
    • 聚焦离子束设备
    • JP2009272293A
    • 2009-11-19
    • JP2009057276
    • 2009-03-11
    • Hitachi High-Technologies Corp株式会社日立ハイテクノロジーズ
    • KAGA HIROYASU
    • H01J37/317G21K1/087H01J27/22H01J37/12
    • H01J37/12H01J2237/0453H01J2237/0458H01J2237/0492H01J2237/0805H01J2237/31745
    • PROBLEM TO BE SOLVED: To obtain a much larger beam current and form a focused ion beam with smaller aberration than a conventional focused ion beam apparatus over low to high acceleration.
      SOLUTION: The focused ion beam apparatus includes: a liquid metal ion source; an extraction electrode for extracting an ion beam from the liquid metal ion source; an acceleration (ground) electrode for accelerating an ion beam; and an electrostatic lens for converging an ion beam; and is structured such that, when the acceleration voltage of the liquid metal ion source is lower than an emission threshold voltage of the liquid metal ion source, the voltage of the extraction electrode is set at a lower potential than that of the acceleration (ground) electrode. In the focused ion beam apparatus, the polarity of a voltage applied to the electrostatic lens is changed in conjunction with the polarity of a voltage applied to the extraction electrode. This invention makes it possible to exercise a deceleration mode focusing method at a high acceleration voltage from the dielectric strength voltage of the electrostatic lens, and exercise an acceleration mode focusing method at a low acceleration voltage with an electrostatic lens having the same focal length as for the deceleration mode focusing method.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:从低到高的加速度,获得比现有的聚焦离子束装置小的像差的聚焦离子束,获得更大的束电流。 聚焦离子束装置包括:液态金属离子源; 用于从液态金属离子源中提取离子束的提取电极; 用于加速离子束的加速(接地)电极; 和用于会聚离子束的静电透镜; 并且构造成使得当液体金属离子源的加速电压低于液体金属离子源的发射阈值电压时,引出电极的电压被设定为比加速度(接地)的电位低的电位, 电极。 在聚焦离子束装置中,施加到静电透镜的电压的极性与施加到提取电极的电压的极性一起改变。 本发明使得可以根据静电透镜的介电强度电压来执行高加速电压下的减速模式聚焦方法,并且使用具有与...相同焦距的静电透镜在低加速度电压下运动加速模式聚焦方法 减速模式聚焦法。 版权所有(C)2010,JPO&INPIT
    • 28. 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。