Patent ID: 7372283

Claim:
A charged particle beam system for measuring electrical characteristics of a sample, comprising: a plurality of probes to detect an electrical current or voltage or electrical signal from the sample, each of the probes having a tip for contacting a sample; an electro-optical device to irradiate the sample with a charged particle beam and to obtain a second charged particle image by detection of a second charged particle beam resulting from irradiation of the sample; an electrical characteristics measuring instrument to measure the electrical characteristics of the sample based on the electrical current or the voltage or the electrical signal detected by the probe; a computer connected to a CAD image storing means for storing layout pattern of the sample, and a displaying unit for displaying the second charged particle image and a first CAD image corresponding to field of view of the second charged particle beam image; wherein: the first CAD image and a second CAD image are displayed on the displaying unit, an indicator is provided for indicating the second CAD image on the first CAD image, and magnification of the second CAD image is higher than that of the first CAD image.