Patent ID: 9016839
Filing Date: 2015-04-28
Classification: B41J,H01L

Abstract:
1. A liquid ejecting head comprising: a flow path formation substrate including a pressure generation chamber communicating with a nozzle; a vibration plate provided on the flow path formation substrate; a piezoelectric element having a first electrode provided on the vibration plate, a piezoelectric layer provided on the first electrode and a second electrode provided on the piezoelectric layer; and a third electrode provided on the second electrode, wherein the first electrode configures an individual electrode that is independent for each piezoelectric element and the second electrode configures a common electrode which is common in a plurality of the piezoelectric elements continuously provided along an arrangement direction of the pressure generation chamber, the first electrode, the piezoelectric layer and the second electrode are extended to the outside of the pressure generation chamber in a longitudinal direction of the pressure generation chamber, the third electrode is provided by covering a region facing the generation chamber, and the third electrode is configured such that a film thickness of a portion facing an end portion of the pressure generation chamber in the longitudinal direction is thicker than a film thickness of a region facing the pressure generation chamber.