Apparatus for improving signal-to-noise performance of projected capacitance touch screens and panels
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United States of America Patent
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Mar 6, 2018
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N/A
app pub date -
May 31, 2016
filing date -
Apr 16, 2014
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Abstract
Improved signal-to-noise performance of projected capacitance touch screens and panels is provided by an integrated circuit regulated high voltage source and high voltage/current drivers coupled to a plurality of projected capacitive touch elements that are controlled by a microcontroller. The single integrated circuit high voltage generator/driver may comprise a voltage boost circuit, a voltage reference, power-on-reset (POR), soft start, a plurality of voltage level shifters and a serial interface for coupling to the microcontroller that may control all functions related to using the projected capacitance touch screens and panels.
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