BACKLIGHT AND DISPLAY UTILISING SAME

摘要

A backlight including a light guide (10) wherein light from one or more light sources (32) is constrained by total internal reflection and from which light may be output to provide backlighting for a display screen, and a light reservoir (34) for feeding said light guide with light. The light guide has an input surface (20) including incoupling elements (24) rising therefrom and extending into the light reservoir, the incoupling elements having at least three mutually non-coplanar sidewall sections (26) extending transversely from the input surface, each sidewall section covering a different part of the input surface. The light reservoir is arranged such that light passing through one area of the light reservoir is capable of entering the light guide through each of said sidewall sections.