Patent ID: 7412119
Filing Date: 2008-08-12
Classification: G02B,G06F

Abstract:
1. An apparatus, comprising; a flexible base material; a first optical layer formed on the flexible base material, the first optically transparent layer having a first index of refraction value; a second optical layer formed on the first optical layer, the second optical layer being patterned to form a plurality of optical elements and waveguides respectively, the second optical layer having a second index of refraction value higher than the first index of refraction value; a third optical layer formed on the second optical layer, the third optical layer having a third index of refraction value lower than the second index of refraction value, the base material and first, second and third optical layers forming a flexible waveguide substrate, and the apparatus further comprising a light based touch screen having the flexible waveguide substrate formed substantially around the perimeter of the touch screen, a first sub-set of the plurality of optical elements of the flexible waveguide substrate being configured to provide light adjacent to the light based touch screen and a second sub-set of optical elements of the flexible waveguide substrate configured to detect data inputs made to the light based touch screen.