Patent ID: 8823632
Filing Date: 2014-09-02
Classification: G02B

Abstract:
1. A light guide panel for LCD backlight unit, comprising; a main body including a lateral side for receiving incident light, a front side for emitting light, and a rear side: symmetric prisms disposed in the front side; substantially coplanar separation planes disposed at the front side, each symmetric prism abutting at least one of the separation planes, directly adjacent symmetric prisms having at least one separation plane therebetween; and asymmetric prisms disposed in the front side, directly adjacent symmetric prisms having at least one asymmetric prism therebetween, each asymmetric prism abutting at least one of the separation planes, wherein: the symmetric prisms and the asymmetric prisms have a longitudinal direction parallel to an incident direction of light, and the asymmetric prisms are disposed in a bilaterally symmetrical arrangement with respect to a centerline (CL) of the light guide panel, the asymmetric prisms on one side of the centerline having vertices that are reversed relative to the asymmetric prisms on an opposite side of the centerline.