发明名称 |
Particle-optical system |
摘要 |
The present invention relates to a multi-beamlet multi-column particle-optical system comprising a plurality of columns which are disposed in an array for simultaneously exposing a substrate, each column having an optical axis and comprising: a beamlet generating arrangement comprising at least one multi-aperture plate for generating a pattern of multiple beamlets of charged particles, and an electrostatic lens arrangement comprising at least one electrode element; the at least one electrode element having an aperture defined by an inner peripheral edge facing the optical axis, the aperture having a centre and a predetermined shape in a plane orthogonal to the optical axis; wherein in at least one of the plurality of columns, the predetermined shape of the aperture is a non-circular shape with at least one of a protrusion and an indentation from an ideal circle about the centre of the aperture. |
申请公布号 |
EP1753010(A1) |
申请公布日期 |
2007.02.14 |
申请号 |
EP20050017318 |
申请日期 |
2005.08.09 |
申请人 |
CARL ZEISS SMS GMBH |
发明人 |
PLATZGUMMER, ELMAR, DR. DIPL.-ING.;STENGL, GERHARD, DR. DIPL.-ING.;FALKNER, HELMUT |
分类号 |
H01J37/317;B82Y10/00;H01J37/12 |
主分类号 |
H01J37/317 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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