Patent ID: 8376603
Filing Date: 2013-02-19
Classification: G02B,G06F,H04M

Abstract:
1. A light guide for use in an input device, the light guide comprising: a substrate; a reflective sheet disposed on the substrate; a rigid light guide layer disposed on the reflective sheet, the rigid light guide layer comprising a plurality of alignment structures defining the rigid light guide layer into multiple light segments; a plurality of first layer flexible light guide films disposed correspondingly above each light segment of the rigid light guide layer; a plurality of second layer flexible light guide films disposed correspondingly above each of the first layer flexible light guide films; and a plurality of light sources, each of the plurality of light sources configured to emit light into one of the rigid light guide layer, the first layer flexible light guide films and the second layer flexible light guide films, wherein the first layer flexible light guide films and the second layer flexible light guide films are aligned into corresponding positions by the plurality of alignment structures of the rigid light guide layer.