Electroding of ceramic piezoelectric transducers
First Claim
1. A method for applying electrodes to a surface of a ceramic piezoelectric layer comprising forming a pattern of deformable electrode material, interposing an adhesive layer between the pattern of deformable electrode material and a surface of a ceramic piezoelectric layer, and pressing the pattern of deformable electrode material against the surface of the ceramic piezoelectric layer with a pressure which is applied substantially uniformly over the surface of the ceramic piezoelectric layer.
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Abstract
In the embodiments described in the specification, electrodes are bonded to the surface of a ceramic piezoelectric layer by supporting electrodes having a reduced dimension on a flexible dielectric film and placing the dielectric film under tension to expand the film and the electrodes sufficiently to conform the electrodes to the desired electrode pattern on the ceramic piezoelectric layer. The electrodes are then bonded to the piezoelectric layer with an adhesive bonding agent under pressure applied hydraulically so as to be distributed uniformly throughout the surface of the piezoelectric layer. In one embodiment the dielectric film also carries conductor arrays for connecting the electrodes to remote driver chips at locations spaced from the surface of the piezoelectric layer.
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Citations
19 Claims
- 1. A method for applying electrodes to a surface of a ceramic piezoelectric layer comprising forming a pattern of deformable electrode material, interposing an adhesive layer between the pattern of deformable electrode material and a surface of a ceramic piezoelectric layer, and pressing the pattern of deformable electrode material against the surface of the ceramic piezoelectric layer with a pressure which is applied substantially uniformly over the surface of the ceramic piezoelectric layer.
Specification