Patent ID: 8622529

Claim:
A liquid ejecting head comprising: a pressure chamber which communicates with a nozzle; a diaphragm unit which partitions a part of the pressure chamber, the diaphragm unit including an elastic film unit which seals an opening portion of the pressure chamber, and an island unit which is provided on the elastic film unit; and a piezoelectric vibrator which displaces the diaphragm unit, the piezoelectric vibrator being joined to the island unit which has a longitudinal direction, wherein a width of a center portion of the island unit is set to be narrower than a width of both end portions of the island unit, the width of the center portion of the island unit being constant, a dimension of the center portion of the island unit in the longitudinal direction is shorter than dimension of the piezoelectric vibrator in the same direction, and the width of both end portions of the island unit is narrower than a width of the piezoelectric vibrator.