Patent ID: 6276781
Filing Date: 2001-08-21
Classification: B41J

Abstract:
A liquid jet recording head comprising:a liquid chamber for holding a liquid to be jetted, the liquid chamber defining at least one nozzle from which the liquid is jetted;a vibration plate disposed above the liquid chamber, the vibration plate defining a liquid supply hole for supplying the liquid to the liquid chamber;a piezoelectric device disposed above the vibration plate and including a lower electrode, a piezoelectric film and an upper electrode in a laminated structure, wherein the piezoelectric device bends the vibration plate to alter the volume of the liquid chamber whereby the liquid is jetted out;a dielectric substrate disposed adjacent the piezoelectric device;a drive circuit for driving the piezoelectric device, the drive circuit including a thin film transistor and an output terminal disposed on a surface of the dielectric substrate, wherein the output terminal and the upper electrode of the piezoelectric device are electrically connected and overlap each other when viewed in a direction of lamination of the piezoelectric device; anda mounting and sealing structure cooperating with at least one of the vibration plate, the piezoelectric device and the dielectric substrate to define a liquid storage chamber for storing the liquid supplied to the liquid chamber.