Patent ID: 8558193
Filing Date: 2013-10-15
Classification: G01B,G01N,H01J,H01L

Abstract:
1. A charged particle beam device, comprising: a specimen holding unit for holding a semiconductor wafer; a specimen stage for moving the specimen holding unit; a charged beam column having a function to scan a primary charged particle beam onto a semiconductor wafer placed on the specimen stage and to detect generated secondary charged particles to output secondary charged particle signal; and a unit for forming an image of the semiconductor wafer from the secondary charged particle signal, wherein the charged particle beam device further comprises: a temperature regulation unit for controlling a temperature of the semiconductor wafer, and a measurement unit for acquiring, in a contactless manner, an observation indication of the wafer that is necessary for controlling the temperature regulation unit, wherein the measurement unit includes an information processing unit for performing predetermined processing on pixel data constituting an image of the wafer, wherein a position deviation at a specific reference position on the wafer is calculated from the pixel data by the information processing unit, and wherein the temperature regulation unit is controlled by using information of the calculated deviation.