Electrostatic transducer
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United States of America Patent
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Sep 22, 2020
Grant Date -
Jun 15, 2017
app pub date -
Feb 11, 2015
filing date -
Feb 11, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An electrostatic transducer (100) comprises an electrically conductive backplane member (102) having an array of through apertures (112); a spacer member (104) disposed over the backplane member (102), the spacer member (104) having an array of holes (114) therethrough, the holes (114) each having a maximum lateral dimension less than twice a minimum lateral dimension; and a flexible electrically conductive membrane (106) disposed over the spacer member (104). The transducer (100) is arranged in use to apply an electrical potential which gives rise to an attractive electrostatic force between the backplane member (102) and the membrane (106) thereby moving portions of the membrane (106) spanning said holes in the spacer member (104) towards said backplane member (102).
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