US Patent 10884553 Light guide and touch screen assembly

The present disclosure provides a light guide comprising a frame defining a central space, at least first reflective surface formed on a bottom side of the frame and at least second reflective surface formed on a top side of the frame. A light emitted by a light emitting element is capable of being reflected by the at least first reflective surface and the at least second reflective surface to a light receiving element. The present disclosure also provides a touch screen assembly.