Abstract:
PROBLEM TO BE SOLVED: To provide a charged particle beam device capable of obtaining a charged particle beam image in which shape contrast and shade contrast are emphasized while maintaining a high SN ratio.SOLUTION: The charged particle beam device includes a metal plate for generating a tertiary electron by impacting a secondary electron or a reflection electron against the metal plate, between an electron source and a specimen. The metal plate comprises divided regions in each of which a voltage can be applied independently. In addition, a primary beam through hole provided in the metal plate is provided at a place adequately far from an electron beam optical axis.
Abstract:
PROBLEM TO BE SOLVED: To simply set optimum conditions of precharge to be carried out before inspection of a pattern formed during a semiconductor device manufacturing process to automatically determine whether the precharge is successful and feed back the results to subsequent operations so as to prevent degradation in reliability of inspection results for constantly stable inspection. SOLUTION: An apparatus for inspecting the pattern includes a charge forming means for generating electrons from another electron source different from an electron source for generating electron beams before radiating an electron beam to form the charge on a surface of a substrate, a current measuring means for measuring a value of current flowing to the substrate while the charge is formed on the surface of the substrate by the charge forming means, and an adjusting means for adjusting the charge formed by the charge forming means so that the value of the current measured by the current measuring means is a predetermined target value. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To automate a synthesizing function for signal charged particles with different energies.SOLUTION: A charged particle beam device includes a charged particle source which irradiates a sample with a primary charged particle beam; a first detector which detects a first signal electrode having first energy among signal charged particles generated by the sample; a second detector which detects a second signal electron having second energy among the signal charged particles generated by the sample; a first arithmetic part which generates a detection image corresponding to each synthesis ratio by varying the synthesis ratio of a signal intensity of the first signal electron and a signal intensity of the second signal electron; a second arithmetic part which calculates a ratio of signal intensities corresponding to two predetermined areas of detection images generated for respective synthesis ratios; and a third arithmetic part which determines a mixing ratio to be used to acquire a detection image based upon variation in the ratio of signal intensities.
Abstract:
PROBLEM TO BE SOLVED: To provide a charged particle beam device capable of obtaining a stable sample image without changing condition of a sample by enabling measurement of electrical potential in the surface of the sample so as to control the surface of the sample at a constant electrical potential, and to provide a method of knowing electrostatic charge condition in the surface of the sample, in regard to a charged particle beam device for obtaining an image by radiating charged particle beams to a sample and detecting a signal secondarily generated from the sample and a method of knowing electrostatic charge condition in the surface of a sample. SOLUTION: The charged particle beam device for obtaining an image by converging charged particle beams with an objective lens, radiating a sample, and detecting a signal secondarily generated from the sample includes an electron source for generating a second charged particle beam having a locus crossing between the sample and the objective lens, a detecting unit for detecting the second charged particle beam, and a computing section for computing electrostatic charge condition in the surface of the sample based on the locus of the second charged particle beam detected by the detecting unit. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a measurement and inspection device of a scanning type electron beam system, and to provide a technology capable of achieving high-accuracy measurement and inspection depending on a scanning speed.SOLUTION: A secondary electron signal detection system in a measurement and inspection device deals with scanning control of a plurality of scanning speeds, and comprises: a detector 107 for detecting a secondary electron signal (SE) resulted from irradiation of an electron beam to a sample 110 by the scanning control; a preamplifier 30 for performing a current-voltage conversion of an output of the detector 107 to pre-amplify the converted output; an analog signal processing amplification part 51 for receiving an output of the preamplifier 30 and performing analog processing amplification of the output, and an ADC (Analog-Digital Conversion part) 52 for performing analog-to-digital conversion of an output of the analog signal processing amplification part 51, as a secondary electron signal detector 50; and an image processing part 205 for generating a measurement or inspection image on the basis of an output of the secondary electron signal detector 50. The controller 210 performs switching control of each part including a LPF (12) in the analog signal processing amplification part 51 depending on a scanning speed and the like.
Abstract:
PROBLEM TO BE SOLVED: To provide a charged particle beam device capable of selecting proper pre-processing conditions in performing automatic brightness and contrast adjustment.SOLUTION: There is provided a charged particle beam device including: a plurality of noise elimination filters which eliminate noise of an electric signal; a measurement section which measures a contrast noise ratio after applying one of the noise elimination filters; and a determination section which determines magnitude between the contrast noise ratio measured by the measurement section and a preset threshold.
Abstract:
PROBLEM TO BE SOLVED: To provide a charged particle beam device allowing accurate condition setting to be easily carried out in a short time. SOLUTION: This charge particle beam device used for detecting a generation signal generated from a sample and including secondary electrons to obtain an image is provided with: an input means for inputting a current value and a voltage value to be applied to a charged particle optical system through which a charged particle beam flows; a storage means for storing the shape, position and properties of the charged particle optical system and accuracy of the current or the voltage to be applied; an electromagnetic field calculation means for carrying out electromagnetic field calculation in the vicinity of a charged particle beam path; a charged particle beam track calculation means for calculating the track of the charged particle beam in the calculated electromagnetic field; a storage means for storing the result of the track calculation; and a control part for controlling the charged particle optical system based on the calculation result. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a management device of a semiconductor device for facilitating management of a semiconductor device by providing micro identification information to a semiconductor chip, or the like, and to provide a microscope.SOLUTION: In this invention, a management device of a semiconductor device includes an arithmetic unit accessible to a storage medium for storing the finger print pattern information in association with at least one of the semiconductor manufacturing conditions, measurement conditions when measuring the semiconductor, measurement results when measuring the semiconductor, and chip information. The arithmetic unit refers to at least one of the semiconductor manufacturing conditions, measurement conditions, measurement results, and chip information, based on the input of the finger print pattern information. This invention also provides a microscope.
Abstract:
PROBLEM TO BE SOLVED: To provide a scanning electron microscope in which an angle of electrons discharged from a sample is discriminated without providing an angle restriction aperture out of an axis.SOLUTION: A scanning electron microscope is proposed which comprises a deflector for deflecting a position to be irradiated with an electron beam and a control device for controlling the deflector. The scanning electron microscope further comprises a detector which detects electrons obtained by irradiating a sample with the electron beam, an aperture forming member which is disposed between the detector and the deflector and includes a passing aperture for the electron beam, and a secondary signal deflector which deflects the electrons discharged from the sample. In accordance with deflection control of the deflector, the secondary signal deflector is controlled so as to deflect the electrons discharged from the sample toward the passing aperture for the electron beam.
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that it is impossible to obtain the same sensitivity of a test in the outer peripheral part and the center part of a tested specimen since charged characteristics are different between the outer peripheral part and the center part of the tested specimen.SOLUTION: A specimen cover is installed at the outer peripheral part of a specimen holder on which the testing specimen is placed, and the charged characteristics of the specimen cover are changed according to the charged characteristics of the tested specimen.