Acoustic apparatus with diaphragm supported at a discrete number of locations
AssigneeKnowles Electronics, LLC
InventorsSagnik Pal, Sung Bok Lee
Life of this patent
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Abstract
An acoustic apparatus includes a back plate, a diaphragm, and at least one pillar. The diaphragm and the back plate are disposed in spaced relation to each other. At least one pillar is configured to at least temporarily connect the back plate and the diaphragm across the distance. The diaphragm stiffness is increased as compared to a diaphragm stiffness in absence of the pillar. The at least one pillar provides a clamped boundary condition when the diaphragm is electrically biased and the clamped boundary is provided at locations where the diaphragm is supported by the at least one pillar.
Claims13
An acoustic apparatus, comprising:
- a back plate;
- a diaphragm, the diaphragm and the back plate being disposed in spaced relation to each other and separated by a distance;
- at least one pillar configured to at least temporarily connect the back plate and the diaphragm;
- such that the diaphragm stiffness is increased as compared to a diaphragm stiffness in absence of the pillar and such that the at least one pillar provides a clamped boundary condition when the diaphragm is electrically biased and the clamped boundary is provided at locations where the diaphragm is supported by the at least one pillar.
Dependencies are inferred from the claim text.