LIGHT GUIDE PANEL COMPRISING SYMMETRIC FRONT PRISM AND ASYMMETRIC FRONT PRISM FOR BACK LIGHT UNIT OF LCD

摘要

A light guide plate for a backlight unit is provided to regulate brightness even the view from the side direction by controlling viewing angle at a specific angle. Body portion includes the front side(303) and the rear side(305) radiating the light(300). A main part prism portion(320) includes a plurality of prisms placing this separation plane(325) in interval and is posted at the front side. A main prism portion is place across a plurality of symmetry shape prisms(322). A secondary prism portion(340) consists of the prism(342) of the asymmerical form.