Patent ID: 8241839
Filing Date: 2012-08-14
Classification: B82Y,G02B,G03F

Abstract:
1. A fabrication method of a brightness enhancement film, comprising: providing a light transmissive substrate, wherein the light transmissive substrate has a first surface and a second surface opposite to the first surface; forming a plurality of rod-shaped lenses on the first surface, wherein each of the rod-shaped lenses extends along a first direction, the rod-shaped lenses are arranged along a second direction, and each of the rod-shaped lenses has a curved surface bent in the second direction; forming a plurality of stripe-shaped prisms on the second surface, wherein each of the stripe-shaped prisms extends along the second direction and the striped-shaped prisms are arranged along the first direction; making an electromagnetic wave beam pass through the rod-shaped lenses, the light transmissive substrate, and the stripe-shaped prisms in sequence, wherein the rod-shaped lenses are capable of converging the electromagnetic wave beam, such that the electromagnetic wave beam is capable of passing through a first portion of each of the stripe-shaped prisms, the first portions of the stripe-shaped prisms are exposed, and a second portion of each of the stripe-shaped prisms is not exposed; and removing the second portions of the striped-shaped prisms.