Patent ID: 9488751
Filing Date: 2016-11-08
CPC Classification: G01V

Claim Text:
1. A droplet oscillation device comprising: an upper electrode; a lower electrode configured and arranged to support a substrate thereon; a changing mechanism configured and arranged to change a distance between the upper electrode and the lower electrode opposite each other; a sensor configured and arranged to detect a droplet formed above a surface of the substrate opposite to the upper electrode; and a controller configured to vary an applied voltage applied between the upper electrode and the lower electrode to oscillate the droplet, and to determine whether or not the droplet is detected by the sensor, the controller being configured to respectively determine whether or not the droplet is detected by the sensor under a plurality of conditions for which a frequency of the applied voltage or the distance are different, and to oscillate the droplet at the frequency and the distance of a condition among the plurality of conditions for which the droplet is detected by the sensor and for which the distance is greatest.