Patent ID: 8532316
Filing Date: 2013-09-10
Classification: B82Y,H04R,Y10S

Abstract:
1. A flat panel piezoelectric loudspeaker (FPPL) comprising: a piezoelectric element comprising a first surface and a second surface opposite to the first surface; a first electrode electrically connected to the piezoelectric element and disposed on the first surface; a second electrode electrically connected to the piezoelectric element and disposed on the second surface; and wherein at least one of the first electrode and the second electrode comprises a carbon nanotube structure, the carbon nanotube structure comprising a plurality of carbon nanotubes approximately aligned along a same direction, a wetting layer applied to an outer circumferential surface of each of the plurality of carbon nanotubes, a conductive layer wrapping an outer circumferential surface of the wetting layer, and a transition layer between the wetting layer and the conductive layer, wherein a material of the transition layer is selected from the group consisting of copper, silver, and alloys thereof.