Address-selectable charging of capacitive devices
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United States of America Patent
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Jun 30, 2015
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app pub date -
Nov 5, 2010
filing date -
Nov 16, 2009
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Abstract
A drive circuit for a capacitive device that comprises a first operational state and a second operational state. The drive circuit comprises a capacitor and preferably two or more transistors. The capacitive device is caused to transition from a first operational state to a second operational state by a row pulse being asserted on a row line and a column pulse asserted on a column enable signal commensurate with the assertion of the row pulse. If the column pulse is deasserted before the row pulse is deasserted, the capacitive device is caused to transition from the first operational state to the second operational upon deassertion of the row pulse. In some embodiments, a precisely controlled variable voltage can be applied to the capacitive device.
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