Piezoelectric element forming parts

Abstract

First internal electrode layers and second internal electrode layers are alternately laminated in a substrate while sandwiching piezoelectric layers therebetween. The first internal electrode layers are exposed to at least a first end face of the substrate, and the second internal electrode layers are exposed to at least a second end face of the substrate which is opposite to the first end face. A first external electrode layer is formed on the first end face and a third end face connecting the first end face and the second end face. The first external electrode layer is electrically connected to the first internal electrode layers. A second external electrode layer is formed on at least the second end face and the third end face. The second external electrode layer is electrically connected to the second internal electrode layers, and is electrically independent from the first external electrode layer. The first external electrode layer and the first internal electrode layers are to be divided by slits extending from the first end face to form a plurality of piezoelectric elements arrayed in a first direction. A part of the first external electrode layer and a part of the second external electrode layer are adjacent in the first direction on the third end face.

Description

technical field [0001] The present invention relates to a piezoelectric element forming member in which a piezoelectric element deformed when a voltage is applied to a piezoelectric material layer is integrally formed; also to a piezoelectric element forming unit, a piezoelectric element including such a piezoelectric element forming member, Actuator unit and liquid spray head. More particularly, the present invention relates to an inkjet recording head in which ink supplied to a pressure chamber communicating with a nozzle hole is pressurized by a piezoelectric element to allow the nozzle hole to eject ink droplets. Background technique [0002] As an ink jet recording head, in which a stress generating chamber communicating with a nozzle hole for ejecting ink droplets is partially constituted by a vibrating plate to allow this vibrating plate to be deformed by a piezoelectric element so that the ink in the pressure chamber is pressurized Ink droplets are ejected from nozz...

AI Technical Summary

Problems solved by technology

[0006] According to the structure, the flexible cable can be connected in a relatively satisfactory manner, but the production efficiency is low

That is, since the inspection of connection failure between the external individual electrodes and the external common electrodes must be performed after the slits are formed, not only the production efficiency is low, but also the yield is low.

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