| 摘要 |
A piezoelectric layer with an individual electrode and a contact point formed thereon, and an FPC having a substrate on which a wiring is formed are in this order arranged on a surface of a channel unit having a pressure chamber. A first through hole is formed in an area, of the substrate, overlapping in a plan view with the contact point, and a second through hole is formed in another area, of the substrate, not overlapping in a plan view with the pressure chamber. An electroconductive material is filled in the first through hole, and a fixing material is filled in the second through hole. Accordingly, it is possible to electrically connect the individual electrode and the wiring of the FPC, and to mechanically connect the piezoelectric layer and the substrate of the FPC.
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