Touch screen system with light reflection
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United States of America Patent
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Oct 16, 2012
Grant Date -
Jun 4, 2009
app pub date -
Nov 30, 2008
filing date -
Dec 2, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention discloses a touch screen system comprising LED infrared transceivers installed at appropriate positions on left and right sides of the screen respectively, and a transmitter end of the transceiver transmits LED infrared waves and spreads spherical waves all over the surface of the screen. If the surface of the screen receives an intrusion from a touch control element, the spherical waves will be interfered, interrupted and reflected, and the wave frequency of the reflection will be detected by the receiver end of the transceiver. After the receiver end has received a reflection signal, the position coordinates of the touch control element can be analyzed through the operation of a core logical unit. A display module is provided for showing the movement path of the touch control element in images or lines, so as to provide a touch screen with low manufacturing cost and long life expectancy.
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