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    • 2. 发明申请
    • CHARGED PARTICLE BEAM DEVICE WITH RETARDING FIELD ANALYZER
    • 带延迟场分析仪的充电颗粒光束装置
    • WO2005122208A3
    • 2006-04-13
    • PCT/EP2005006247
    • 2005-06-10
    • LBLEITERPRUEFTECHNIK MBH ICT IDEGENHARDT RALFFEUERBAUM HANS-PETERHAMBACH DIRKKOEGLER WALTERMUNACK HARRYSALVESEN CARLO
    • DEGENHARDT RALFFEUERBAUM HANS-PETERHAMBACH DIRKKOEGLER WALTERMUNACK HARRYSALVESEN CARLO
    • H01J37/244G01R31/305G01R31/307H01J37/28
    • H01J37/244G01R31/305H01J2237/24485H01J2237/24585
    • The invention provides a charged particle beam device (100) to inspect or structure a specimen (102) with a primary charged particle beam (104) propagating along an optical axis (108); a beam tube element (130) having a tube voltage (VT); and a retarding field analyzer (1, 50) in the vicinity of the beam tube element (130) to detect secondary charged particles (2,105) generated by the primary charged particle beam (104) on the specimen (102). According to the invention, the retarding field analyzer (1, 50) thereby comprises an entrance grid electrode (10) at a second voltage (V2); at least one filter grid electrode (4) at a first voltage (V1); a charged particle detector (8) to detect the secondary charged particles (2,105); and at least one further electrode element (122, 122a, 122b, 152, 152a, 152b, 170, 170a, 170b) arranged between the entrance grid electrode (10) and the at least one filter grid electrode (4). The at least one further electrode element (122, 122a, 122b, 152, 152a, 152b, 170, 170a, 170b, 180) reduces the size of the stray fields regions (41) in the retarding electric field region (20) to improve the energy resolution of the retarding field analyzer (1, 50). The improvement of the energy resolution is significant, in particular when the beam tube element (130) is part of a high voltage beam tube.
    • 本发明提供一种带电粒子束装置(100),用于利用沿着光轴(108)传播的初级带电粒子束(104)来检查或构造样本(102)。 具有管电压(VT)的光束管元件(130); 以及在所述束管元件(130)附近的延迟场分析器(1,50),以检测由所述样本(102)上的所述初级带电粒子束(104)产生的二次带电粒子(2,105)。 根据本发明,延迟场分析仪(1,50)由此包括处于第二电压(V2)的入口栅电极(10); 至少一个第一电压(V1)的滤波栅极(4); 带电粒子检测器(8),用于检测二次带电粒子(2,105); 以及布置在入射栅电极(10)和至少一个滤光栅格电极(4)之间的至少一个另外的电极元件(122,122a,122b,152,152a,152b,170,170a,170b)。 至少一个另外的电极元件(122,122a,122b,152,152a,152b,170,170a,170b,180)减小了延迟电场区域(20)中的杂散场区域(41)的尺寸,以改善 延迟场分析仪(1,50)的能量分辨率。 能量分辨率的提高是显着的,特别是当束管元件(130)是高压束管的一部分时。