Minute structure inspection device, inspection method, and inspection program
First Claim
1. A minute structure inspection device for evaluating a characteristic of at least one minute structure having a movable portion, the minute structure being formed on a substrate, the minute structure inspection device comprising:
- sound wave generating means for outputting a test sound wave to said minute structure upon testing; and
evaluating means for detecting movement of said movable portion of said minute structure in response to said test sound wave outputted by said sound wave generating means, and evaluating said characteristic of said minute structure on a basis of a result of the detection, whereinsaid evaluating means evaluates said characteristic of said minute structure on a basis of a comparison between an output voltage outputted on a basis of said movement of said movable portion of said minute structure in at least one given frequency band and an output voltage corresponding to a given threshold.
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Accused Products
Abstract
There are provided an inspection device, an inspection method, and an inspection program for accurately inspecting a minute structure having a movable portion by using a simple method. A test sound wave is inputted and frequency characteristic of a sensor output voltage amplitude responding to the input of the test sound wave is analyzed. The maximum frequency and the minimum frequency of the device is calculated from estimated use conditions and it is judged whether it is possible to detect a desired characteristic in the frequency band. More specifically, the device is judged to be good or bad depending whether the response characteristic in a predetermined frequency band exceeds the minimum characteristic level as a threshold value.
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Citations
24 Claims
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1. A minute structure inspection device for evaluating a characteristic of at least one minute structure having a movable portion, the minute structure being formed on a substrate, the minute structure inspection device comprising:
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sound wave generating means for outputting a test sound wave to said minute structure upon testing; and evaluating means for detecting movement of said movable portion of said minute structure in response to said test sound wave outputted by said sound wave generating means, and evaluating said characteristic of said minute structure on a basis of a result of the detection, wherein said evaluating means evaluates said characteristic of said minute structure on a basis of a comparison between an output voltage outputted on a basis of said movement of said movable portion of said minute structure in at least one given frequency band and an output voltage corresponding to a given threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A minute structure inspection device for evaluating a characteristic of at least one minute structure having a movable portion, the minute structure being formed on a substrate, the minute structure inspection device comprising:
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driving means for electrically providing movement to said movable portion of said minute structure; and evaluating means for detecting sound outputted in response to said movement of said minute structure, and evaluating said characteristic of said minute structure on a basis of a result of the detection, wherein said evaluating means evaluates said characteristic of said minute structure on a basis of a comparison between an output sound pressure outputted on a basis of said movement of said movable portion of said minute structure in at least one given frequency band and an output sound pressure corresponding to a given threshold. - View Dependent Claims (9, 10, 11)
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12. A minute structure inspection method for evaluating a characteristic of at least one minute structure having a movable portion, the minute structure being formed on a substrate, the minute structure inspection method comprising the steps of:
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outputting a test sound wave to said minute structure upon testing; detecting movement of said movable portion of said minute structure in response to said test sound wave outputted by sound wave generating means; and evaluating said characteristic of said minute structure on a basis of a result of the detection, wherein said evaluating step evaluates said characteristic of said minute structure on a basis of a comparison between a detected output voltage in at least one given frequency band and an output voltage corresponding to a given threshold. - View Dependent Claims (13, 14, 15, 16, 17, 18, 23)
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19. A minute structure inspection method for evaluating a characteristic of at least one minute structure having a movable portion, the minute structure being formed on a substrate, the minute structure inspection method comprising the steps of:
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electrically providing movement to said movable portion of said minute structure; detecting sound outputted in response to said movement of said minute structure; and evaluating said characteristic of said minute structure on a basis of a result of the detection, wherein said evaluating step evaluates said characteristic of said minute structure on a basis of a comparison between a detected output sound pressure in at least one given frequency band and an output sound pressure corresponding to a given threshold. - View Dependent Claims (20, 21, 22)
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24. A minute structure inspection device for evaluating a characteristic of at least one minute structure having a movable portion, the minute structure being formed on a substrate, the minute structure inspection device comprising:
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driving means for electrically providing movement to said movable portion of said minute structure; and evaluating means for detecting sound outputted in response to said movement of said minute structure, and evaluating said characteristic of said minute structure on a basis of a result of the detection, wherein said evaluating means calculates an occupied area of a given region surrounded by an output sound pressure characteristic based on said movement of said movable portion of said minute structure, to thereby calculate an occupancy rate, the output sound pressure characteristic being between a minimum characteristic level and a maximum characteristic level and in a given frequency band, and evaluates said characteristic of said minute structure on a basis of a comparison between said occupancy rate and an occupancy rate corresponding to a given threshold.
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Specification