Patent ID: 8360619
Filing Date: 2013-01-29
Classification: G02B,G02F

Abstract:
1. A brightness enhancement film, comprising: a light transmissive substrate having a first surface and a second surface opposite to the first surface; a plurality of convex lens portions disposed on the first surface, wherein each of the convex lens portions has a curved convex surface facing away from the light transmissive substrate; a plurality of concave lens portions disposed on the first surface, wherein the convex lens portions and the concave lens portions are alternately arranged, each of the concave lens portions has a curved concave surface facing away from the light transmissive substrate, and the curved convex surfaces and the curved concave surfaces together form a wavy continuous curve surface; and a reflective layer disposed on the second surface and having a plurality of light passing openings, wherein the light passing openings are disposed on optical axes of the convex lens portions respectively.