摘要:
A pattern inspection apparatus can be provided, for example, in a scanning electron microscope system. When patterns of a plurality of layers are included in a SEM image, the apparatus separates the patterns according to each layer by using design data of the plurality of layers corresponding to the patterns. Consequently, the apparatus can realize inspection with use of only the pattern of a target layer to be inspected, pattern inspection differently for different layers, or detection of a positional offset between the layers.
摘要:
A pattern inspection apparatus can be provided, for example, in a scanning electron microscope system. When patterns of a plurality of layers are included in a SEM image, the apparatus separates the patterns according to each layer by using design data of the plurality of layers corresponding to the patterns. Consequently, the apparatus can realize inspection with use of only the pattern of a target layer to be inspected, pattern inspection differently for different layers, or detection of a positional offset between the layers.
摘要:
A pattern inspection apparatus can be provided, for example, in a scanning electron microscope system. When patterns of a plurality of layers are included in a SEM image, the apparatus separates the patterns according to each layer by using design data of the plurality of layers corresponding to the patterns. Consequently, the apparatus can realize inspection with use of only the pattern of a target layer to be inspected, pattern inspection differently for different layers, or detection of a positional offset between the layers.
摘要:
A pattern inspection apparatus can be provided, for example, in a scanning electron microscope system. When patterns of a plurality of layers are included in a SEM image, the apparatus separates the patterns according to each layer by using design data of the plurality of layers corresponding to the patterns. Consequently, the apparatus can realize inspection with use of only the pattern of a target layer to be inspected, pattern inspection differently for different layers, or detection of a positional offset between the layers.
摘要:
A pattern inspection apparatus can be provided, for example, in a scanning electron microscope system. When patterns of a plurality of layers are included in a SEM image, the apparatus separates the patterns according to each layer by using design data of the plurality of layers corresponding to the patterns. Consequently, the apparatus can realize inspection with use of only the pattern of a target layer to be inspected, pattern inspection differently for different layers, or detection of a positional offset between the layers.
摘要:
One of principal objects of the present invention is to provide a sample dimension measuring method for detecting the position of an edge of a two-dimensional pattern constantly with the same accuracy irrespective of the direction of the edge and a sample dimension measuring apparatus. According to this invention, to accomplish the above object, it is proposed to correct the change of a signal waveform of secondary electrons which depends on the direction of scanning of an electron beam relative to the direction of a pattern edge of an inspection objective pattern. It is proposed that when changing the scanning direction of the electron beam in compliance with the direction of a pattern to be measured, errors in the scanning direction and the scanning position are corrected. In this configuration, a sufficient accuracy of edge detection can be obtained irrespective of the scanning direction of the electron beam.
摘要:
One of principal objects of the present invention is to provide a sample dimension measuring method for detecting the position of an edge of a two-dimensional pattern constantly with the same accuracy irrespective of the direction of the edge and a sample dimension measuring apparatus. According to this invention, to accomplish the above object, it is proposed to correct the change of a signal waveform of secondary electrons which depends on the direction of scanning of an electron beam relative to the direction of a pattern edge of an inspection objective pattern. It is proposed that when changing the scanning direction of the electron beam in compliance with the direction of a pattern to be measured, errors in the scanning direction and the scanning position are corrected. In this configuration, a sufficient accuracy of edge detection can be obtained irrespective of the scanning direction of the electron beam.
摘要:
One of principal objects of the present invention is to provide a sample dimension measuring method for detecting the position of an edge of a two-dimensional pattern constantly with the same accuracy irrespective of the direction of the edge and a sample dimension measuring apparatus. According to this invention, to accomplish the above object, it is proposed to correct the change of a signal waveform of secondary electrons which depends on the direction of scanning of an electron beam relative to the direction of a pattern edge of an inspection objective pattern. It is proposed that when changing the scanning direction of the electron beam in compliance with the direction of a pattern to be measured, errors in the scanning direction and the scanning position are corrected. In this configuration, a sufficient accuracy of edge detection can be obtained irrespective of the scanning direction of the electron beam.
摘要:
One of principal objects of the present invention is to provide a sample dimension measuring method for detecting the position of an edge of a two-dimensional pattern constantly with the same accuracy irrespective of the direction of the edge and a sample dimension measuring apparatus. According to this invention, to accomplish the above object, it is proposed to correct the change of a signal waveform of secondary electrons which depends on the direction of scanning of an electron beam relative to the direction of a pattern edge of an inspection objective pattern. It is proposed that when changing the scanning direction of the electron beam in compliance with the direction of a pattern to be measured, errors in the scanning direction and the scanning position are corrected. In this configuration, a sufficient accuracy of edge detection can be obtained irrespective of the scanning direction of the electron beam.
摘要:
An evaluation method and apparatus is provided for evaluating a displacement between patterns of a pattern image by using design data representative of a plurality of patterns superimposed ideally. A first distance is measured for an upper layer pattern between a line segment of the design data and an edge of the charged particle radiation image, a second distance is measured for a lower layer pattern between a line segment of the design data and an edge of the charged particle radiation image; and an superimposition displacement is detected between the upper layer pattern and lower layer pattern in accordance with the first distance and second distance.