Patent ID: 7892864
Filing Date: 2011-02-22
Classification: H01J

Abstract:
1. A charged particle beam irradiation method comprising: setting an observation region on a sample, the sample including an object pattern to be observed, and the observation region including the object pattern; setting an irradiation region on the sample, the irradiation region being to be irradiated with a charged particle beam, the irradiation region including the observation region and being larger than the observation region; setting a non-irradiation region in the irradiation region, the non-irradiation region failing to be irradiated with the charged particle beam; irradiating the irradiation region except the non-irradiation region with the charged particle beam; and irradiating the observation region with a charged particle beam after the irradiating the irradiation region except the non-irradiation region with the charged particle beam.