Patent ID: 7710511

Claim:
A liquid crystal display (LCD) unit, comprising: a plurality of light sources; an LCD panel comprising an upper plate, a lower plate and a liquid crystal layer disposed between the upper and lower plates, the lower plate facing the light source, the lower plate comprising an absorbing polarizer; and an arrangement of light management films disposed between the plurality of light sources and the LCD panel so that the plurality of light sources illuminates the LCD panel through the arrangement of light management films, the arrangement of light management films being attached to the lower plate of the LCD panel, the arrangement of light management films comprising at least a first diffuser layers, wherein a value of σ/x is less than 2.5%, where x is the level of illumination light passing from the arrangement of light management films to the LCD panel, averaged across the LCD panel, and a is the root mean square deviation in the level of illumination light across the arrangement of light management films.