Patent ID: 8534802

Claim:
A liquid ejecting head comprising: a pressure generating chamber formed therein which communicates with a nozzle opening; and a piezoelectric element having, a first electrode, a piezoelectric material layer formed above the first electrode and having a perovskite structure, and a second electrode formed above the piezoelectric material layer, wherein the piezoelectric material layer has a monoclinic structure, the piezoelectric material layer having a polarization moment in a first direction, an angle θa being formed between an electric field direction of an electric field generated between the first electrode and the second electrode and the first direction, and wherein the angle θa is greater than an angle θ 0 formed between the electric field direction and a second direction of the polarization moment of the piezoelectric material layer, different from the first direction, when a piezoelectric constant (d 31 ) of the piezoelectric material layer reaches a local maximum level.