Methods and apparatus for sensing touch events on a display
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United States of America Patent
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May 7, 2013
Grant Date -
May 26, 2011
app pub date -
Nov 25, 2009
filing date -
Nov 25, 2009
priority date (Note) -
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Abstract
Methods and apparatus provide for a touch sensitive display, in which a transparent layer is disposed over a display layer; light is directed to propagate into and/or through the transparent layer; scattered light is measured in response to an object touching a surface the transparent layer and disturbing the propagation of the light therethrough; and one or more positions at which the object touches the transparent layer are computed based on signals obtained by the step of measuring the scattered light.
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