NOZZLE CLOGGING DETECTION DEVICE, LIQUID DROPLET DISCHARGING DEVICE, ELECTROOPTICAL DEVICE, MANUFACTURING METHOD OF ELECTROOPTICAL DEVICE, AND ELECTRONIC APPARATUS

摘要

A head 20 , controlled by control unit 10 , ejects a droplet 22 through each nozzle in nozzle group 2 . Measuring means 33 electronically measures a resonance frequency of crystal oscillator 31 and outputs the measured resonance frequency to control unit 10 . Control unit 10 determines whether or not a nozzle is clogged on the basis of the measurement result of a resonance frequency of the crystal oscillator before and after the ejection of droplet 22.