Optical position detection device and display device with position detection function
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United States of America Patent
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Sep 30, 2014
Grant Date -
Jun 9, 2011
app pub date -
Dec 7, 2010
filing date -
Dec 9, 2009
priority date (Note) -
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Abstract
An optical position detection device includes: a detecting light source section adapted to emit a detection light beam; a light source drive section adapted to drive the detecting light source section to form an X-coordinate detecting light intensity distribution in which an intensity of the detection light beam varies in an X-axis direction, and a Y-coordinate detecting light intensity distribution in which an intensity of the detection light beam varies in a Y-axis direction intersecting the X-axis direction; a light detection section adapted to receive the detection light beam reflected by a target object; and a position detection section adapted to detect a position of the target object based on a reception intensity in the light detection section.
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