Charged particle beam apparatus and dimension measuring method

Details Charged particle beam apparatus and dimension measuring method Charged particle beam apparatus and dimension measuring method

2007-05-08

2007-05-08

Nguyen, Kiet T. (Department: 2881)

Radiant energy

Inspection of solids or liquids by charged particles

Electron probe type

Reexamination Certificate

active

11242129

ABSTRACT:
There is provided a charged particle beam apparatus which allows implementation of a high-reliability and high-accuracy dimension measurement even if height differences exist on the surface of a sample. The charged particle beam apparatus includes the following configuration components: An acquisition unit for acquiring a plurality of SEM images whose focus widths are varied in correspondence with the focal depths, a determination unit for determining, from the plurality of SEM images acquired, a SEM image for which the image sharpness degree of the partial domain including a dimension-measuring domain becomes the maximum value, and a measurement unit for measuring the dimension of the predetermined domain from the SEM image whose image sharpness degree is the maximum value.

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