Patent ID: 8317304
Filing Date: 2012-11-27
Classification: B41J,H01L

Abstract:
1. A liquid ejecting head comprising: a channel-forming substrate comprising a pressure chamber communicating with a nozzle for ejecting a droplet; and a piezoelectric element provided on the channel-forming substrate to change a pressure in the pressure chamber, wherein: the piezoelectric element comprises a piezoelectric layer comprising titanium (Ti) and zirconium (Zr), a first electrode provided on one side face of the piezoelectric layer, and a second electrode provided on an opposite side face of the piezoelectric layer; the first electrode comprises a conductive layer and an orientation-controlling layer comprising tungsten, wherein the orientation-controlling layer is disposed between the conductive layer and the piezoelectric layer; the composition ratio of Ti and Zr in the piezoelectric layer Ti/(Zr+Ti) is in the range of 0.50 to 0.60 both inclusive; and approximately one third the thickness of the piezoelectric layer is composed of rhombohedral crystals.