Radiant energy – Inspection of solids or liquids by charged particles – Electron probe type
Reexamination Certificate
2005-12-27
2005-12-27
Wells, Nikita (Department: 2881)
Radiant energy
Inspection of solids or liquids by charged particles
Electron probe type
C250S311000, C250S442110
Reexamination Certificate
active
06979823
ABSTRACT:
An electron beam (area beam) having a fixed area is irradiated onto the surface of a semiconductor sample, and reflected electrons from the sample surface are imaged by the imaging lens, and images of a plurality of regions of the surface of the semiconductor sample are obtained and stored in the image storage unit, and the stored images of the plurality of regions are compared with each other, and the existence of a defect in the regions and the defect position are measured. By doing this, in an apparatus for testing a pattern defect of the same design, foreign substances, and residuals on a wafer in the manufacturing process of a semiconductor apparatus by an electron beam, speeding-up of the test can be realized.
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Hasegawa Masaki
Kuroda Katsuhiro
Murakoshi Hisaya
Nozoe Mari
Shinada Hiroyuki
Hitachi , Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Quash Anthony
Wells Nikita
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