Patent ID: 7782421
Filing Date: 2010-08-24
Classification: G02B,G02F,G09G

Abstract:
1. A liquid crystal display device comprising: a lower cover; first and second prism light guide panels disposed in a plurality of layers on the lower cover, ridges of prism mountains formed on the first prism light guide panel being substantially perpendicular to ridges of prism mountains formed on the second prism light guide panel; lamp units being provided on at least one side of each prism light guide panel along the ridges of the prism mountains; and a liquid crystal panel separated from the prism light guide panels that receives light transmitted through the first and second light guide panels emitted from the lamp units, wherein the ridges of prism mountains are formed on the upper surface of the first and second prism light guide panels so that the light output from the prism light guide panels are focused by the corresponding ridge of prism mountains.