Patent ID: 7595488

Claim:
A method of specifying an observing or working position, comprising the steps of: providing as a sample a semiconductor device having first wirings on a surface of the semiconductor device and second wirings in a layer of the semiconductor device under the surface thereof; taking-in and storing digitized data of the first and second wirings of the sample in a 1st storage means; displaying on a 1st display area an image of the stored digitized data containing a desired observing or working position of the first and second wirings of the sample; indicating on the 1st display area a 1st position on the first wirings using a pointing device and storing the 1st position in a 2nd storage means; moving the sample to an observing or working position for observing a desired observing or working position of the sample; obtaining an image of the surface of the sample in the observing or working position and storing the image in a 3rd storage means; displaying on a 2nd display area the image stored in the 3rd storage means; indicating on the 2nd display area a position corresponding to the 1st position stored in the 2nd storage means and storing the position corresponding to the 1st position in a 4th storage means; calculating a conversion function for converting a coordinate system of the 1st display area and of the 2nd display area using the position stored in the 2nd storage means and the position stored in the 4th storage means; indicating on the 1st display area the desired observing or working position of the second wirings; and specifying a position corresponding to the desired observing or working position of the second wirings on the 2nd display area in accordance with the calculated conversion function.