Patent ID: 9662881
Date: 2017-05-30
CPC Classifications: B41J

Claim:
1. A liquid ejecting head comprising: a flow passage formation substrate defining a pressure generating chamber, the pressure generating chamber being configured to hold a liquid; a piezoelectric element that is disposed on the flow passage formation substrate; a vibration film; and an insulating film formed on the vibration film, wherein the liquid ejecting head is configured to discharge the liquid from at least one nozzle opening by pressurizing the liquid in the pressure generating chamber due to displacement of the vibration film according to driving of the piezoelectric element, wherein the piezoelectric element includes a first electrode film formed on the insulating film, a piezoelectric layer formed on the first electrode film, and a second electrode film formed on the piezoelectric layer, wherein the insulating film includes a lower insulating film formed on the vibration film, and an upper insulating film formed on the lower insulating film, wherein the lower and upper insulating films are formed of the same material, wherein the lower insulating film is a film formed by a sputtering method, and the upper insulating film is a film formed by a liquid-phase method, such that the lower and upper insulating films have different crystal structures, and wherein a thickness of the upper insulating film formed by the liquid-phase method is greater than a thickness of the lower insulating film formed by the sputtering method.