Locally dimmable light guide plates and display devices comprising same

摘要

Disclosed herein are a light guide assembly 110 comprising a light guide plate 105 and at least one light valve layer 115 and at least one light source optically coupled to the light guide plate 105 Wherein the areas of the light guide assembly (110) are configured to switch between an active state and an inactive state, wherein the active region transmits at least about 90% of the incident light, and the inactive region comprises at least about 90% / RTI and less than 10%. Display devices including such backlight units, and methods of displaying an image are further disclosed.