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:
Oct. 20, 2015
Filed:
Mar. 09, 2012
Pei-chi Chien, Yilan County, TW;
I-ling Kao, Taipei, TW;
Ping-chen Chen, Taipei, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An optical film and a light emitting device are provided. The optical film includes a substrate, a resin layer, and a plurality of porous particles. The resin layer is located on the substrate. The porous particles are distributed in the resin layer, and each of the porous particles includes a particle body and a plurality of holes. A refractive index of the particle body is different from a refractive index of the resin layer, and the refractive index of the particle body is different from a refractive index of air in the holes. The light emitting device includes a light emitting element and an optical film. The light emitting element has a light emitting surface, and the optical film is located on the light emitting surface of the light emitting element.