STEP DIFFERENCE MEASURING METHOD, STEP DIFFERENCE MEASURING INSTRUMENT, AND MANUFACTURING METHOD FOR SEMICONDUCTOR DEVICE
PROBLEM TO BE SOLVED: To provide a step difference measuring instrument and a step difference measuring method for measuring a step difference easily and precisely, as to a substrate patterned with a light transmitting mask. SOLUTION: The substrate 2 patterned with the light transmitting mask 2a is...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide a step difference measuring instrument and a step difference measuring method for measuring a step difference easily and precisely, as to a substrate patterned with a light transmitting mask. SOLUTION: The substrate 2 patterned with the light transmitting mask 2a is immersed into a liquid having a refractive index same to that of the mask 2a, light 50 is emitted toward a side patterned with the mask 2a on the substrate 2, reflected light 52 from the substrate 2 is detected to calculate the step difference in the side patterned with the mask 2a on the substrate 2, based on the detected reflected light 52. COPYRIGHT: (C)2005,JPO&NCIPI |
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