Patent ID: 9207800
Filing Date: 2015-12-08
Classification: G06F

Abstract:
1. A touch screen assembly, comprising: a curved display screen; a plurality of light emitters, mounted underneath said display screen, operative to emit light when activated; a plurality of photo diodes, mounted underneath said display screen, operative to detect amounts of light received when activated; a frame comprising internally reflective surfaces that guide light emitted by said light emitters along light paths that travel upwards, above and across said display screen in segments that follow the contour of said display screen, and downwards to said photo diodes, wherein the frame is oriented such that some of the light paths are incident upon and reflect off of said display screen while crossing said display screen; and a processor coupled with said light emitters and said photo diodes, operative to selectively activate said light emitters and said photo diodes, and to identify a location of an object touching said display screen, based on amounts of light detected by activated photo diodes when light emitted by activated light emitters is blocked by the object along its light path.