Patent ID: 8125589
Filing Date: 2012-02-28
Classification: G02F

Abstract:
1. A directly illuminated liquid crystal display (LCD) unit, comprising: a light source; 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 light source and the LCD panel so that the light source illuminates the LCD panel through the arrangement of light management films, the arrangement of light management films comprising at least a first diffuser layer, at least the first diffuser layer being attached to a lower surface of the lower plate of the LCD panel, wherein a value of σ/x is less than 1.5%, 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 σ is the root mean square deviation in the level of illumination light across the arrangement of light management films.