Patent ID: 8872801
Filing Date: 2014-10-28
Classification: G06F

Abstract:
1. A touch-sensitive apparatus for determining a location of at least one object on a touch surface, the touch-sensitive apparatus extending in a direction of depth and comprising: a light transmissive panel that defines the touch surface; a display arranged, in the direction of depth, behind the light transmissive panel and configured to present an image that is visible through the light transmission panel; a first compartment arranged, in the direction of depth, behind the display and including a light emitter arrangement configured to emit light to be introduced into the light transmissive panel for propagation by internal reflection in the light transmissive panel; and a second compartment arranged, in the direction of depth, behind the display and including a light detection arrangement configured to receive light that has propagated in the light transmissive panel; and a light blocking sheet that is arranged between the first compartment and the second compartment, wherein