SYSTEM AND METHOD FOR A PROJECTED CAPACITIVE TOUCHSCREEN HAVING GROUPED ELECTRODES
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United States of America Patent
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Issued Date -
Nov 25, 2010
app pub date -
May 22, 2009
filing date -
May 22, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A projected capacitive touchscreen system has triangular-shaped electrodes coupled to a substrate. Adjacent ones of the electrodes alternate between first and second orientations to form an interleaved arrangement. The electrodes having the first orientation are electrically connected into greater than two groups that each have at least two semi-adjacent electrodes and the electrodes having the second orientation are electrically connected into at least one group that has at least two semi-adjacent electrodes. A controller detects signal levels associated with at least one touch on the substrate from the greater than two groups and the at least one group. The signal levels are used to determine both X and Y coordinate positions of the at least one touch.
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