Patent ID: 7744194

Claim:
A liquid ejection head, comprising: ejection elements which include a plurality of ejection holes through which liquid is ejected, a plurality of pressure chambers in communication with the plurality of ejection holes, and a plurality of piezoelectric elements each of which deforms each of the pressure chambers and is provided on a side of the plurality of pressure chambers opposite from a side on which the ejection holes are formed; a common liquid chamber through which the liquid is supplied to the plurality of pressure chambers, the common liquid chamber being provided on a side of the pressure chambers opposite from the side on which the ejection holes are formed; a plurality of wiring members each of which is formed in such a manner that at least a portion of the wiring member rises upward from each of the piezoelectric elements or a vicinity of each of the piezoelectric elements, the at least the portion of the wiring member having a column-shape and passing through the common liquid chamber in a direction substantially perpendicular to a surface on which the piezoelectric elements are disposed, each of the wiring members including a conducting member which transmits at least one signal of a signal to be supplied to one of the ejection elements and a signal obtained from one of the ejection elements, and a covering member which is formed so as to cover the conducting member in the at least the portion of the wiring member having the column-shape and passing through the common liquid chamber; and a coupling member which structurally joins at least two of the wiring members adjacent to each other, the coupling member structurally coupling with the at least the portion having the column-shape of each of the at least two of the wiring members.