STACKED PIEZOELECTRIC SPEAKER DEVICE
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United States of America Patent
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Issued Date -
Feb 27, 2014
app pub date -
Sep 18, 2012
filing date -
Aug 24, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A stacked piezoelectric speaker device having a structure where a piezoelectric ceramic plate and an internal electrode plate are stacked, in which an inactive dummy electrode is disposed around an active internal electrode on the same layer to ensure uniform plastic shrinkage. The stacked piezoelectric speaker device has a structure in which an inactive dummy electrode that does not contribute to polarization is disposed around an active internal electrode that contributes to the polarization, the active internal electrode and the inactive dummy electrode being stacked on the same layer.
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