Multi-Touch Points Sensible Touch Panel and Method for controlling the same
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United States of America Patent
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Issued Date -
Sep 24, 2009
app pub date -
Jun 9, 2008
filing date -
Mar 21, 2008
priority date (Note) -
Abandoned
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Abstract
A multi-contact points sensible touch panel has a substrate module, multiple infrared (IR) transmitter and multiple IR receivers to provide IR signal being transmitted along different directions. The first transmission direction is orthogonal to the second transmission direction. The third transmission direction intersects the first transmission direction with a first nonzero oblique angle, and also intersects the second transmission direction with a second nonzero oblique angle. When multiple contact points occur on the touch panel, coordinate of each contact points is correctly determined by sensing a position where the IR signals of different directions intersect together.
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