Patent ID: 7461926

Claim:
A liquid delivering apparatus, comprising: a flow-passage unit including an opening and a pressure chamber which accommodates liquid and which communicates with the opening, the flow-passage unit including a first outer side edge and a second outer side edge opposite the first outer side edge; an oscillating plate which partially defines the pressure chamber and which includes an extending portion that initially extends from the first outer side edge of the flow-passage unit to an outside thereof so as to be away from the second outer side edge; a piezoelectric material layer which is one of directly and indirectly stacked on the oscillating plate and which deforms upon application of an electric field thereto so as to oscillate the oscillating plate for delivering the liquid from the pressure chamber through the opening; an electrode pattern and a drive circuit which apply the electric field to the piezoelectric material layer, the electrode pattern being one of directly and indirectly provided on the oscillating plate, the drive circuit is one of directly and indirectly mounted on the extending portion of the oscillating plate; and a heat dissipating member provided on the extending portion in the vicinity of the drive circuit.