TOUCH SCREEN
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United States of America Patent
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Issued Date -
Dec 13, 2012
app pub date -
Jun 10, 2011
filing date -
Jun 10, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A method for determining the location of an object on a touch panel is provided. Initially, a pulse of terahertz radiation is transmitted through a touch panel, which formed of a dielectric material such that the pulse generates a evanescent field in a region adjacent to a touch surface of the touch panel. A reflected pulse is generated by an object located within the region adjacent to the touch surface of the touch panel, and a position of the object on the touch surface of the touch panel is triangulated at least in part from the reflected pulse.
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