Locally dimmable light guide plate and display apparatus including the same

摘要

A back comprising a light guiding assembly (110) herein comprising a light guiding plate (105) and at least one light valve layer (115), and at least one light source (125) optically coupled to the light guiding plate A light unit, wherein an area in the light guiding assembly is configured to switch between an active state and an inactive state, the active area transmits at least about 90% of incident light, and the inactive area is , A backlight unit is disclosed that transmits less than about 10% of incident light. Furthermore, a display device comprising such a backlight unit is disclosed together with a method of displaying an image.