The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 14, 2012
Filed:
Mar. 29, 2010
Tun-chien Teng, Hsinchu, TW;
Chih-jen Tsang, Hsinchu, TW;
Jyh-ming Chen, Hsinchu, TW;
Coretronic Corporation, Hsin-Chu, TW;
Abstract
A fabrication method of a brightness enhancement film (BEF) including the following steps is provided. A light transmissive substrate is provided and has a first surface and a second surface opposite to the first surface. Then, a plurality of first rod-shaped lenses are formed on the first surface. The rod-shaped lenses extend along a first direction and are arranged along a second direction. After that, a plurality of second stripe-shaped prisms are formed on the second surface. The stripe-shaped prisms extend along the second direction and are arranged along the first direction. Next, an electromagnetic wave beam is made to pass through the rod-shaped lenses, the light transmissive substrate and the stripe-shaped prisms in sequence. A first portion of each of the stripe-shaped prisms exposes and leaves a second portion of each of the stripe-shaped prisms unexposed. Then, the second portions of the stripe-shaped prisms are removed.