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:
Jul. 01, 2014
Filed:
Aug. 13, 2008
Seung Hun Chae, Daejeon, KR;
Belyaev Sergey, Daejeon, KR;
Byoung Kun Jeon, Daejeon, KR;
Moon Soo Park, Daejeon, KR;
Seung Hun Chae, Daejeon, KR;
Belyaev Sergey, Daejeon, KR;
Byoung Kun Jeon, Daejeon, KR;
Moon Soo Park, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
An optical film includes at the least one retardation film and at least one isotropic layer made of an isotropic material, wherein the difference in average refractive index between the retardation film and the isotropic layer is at least 0.1 or more. Also, the method of adjusting wavelength dispersion characteristics of an optical film includes: stacking an isotropic layer onto a retardation film. A method for preparing optical film having a variety of wavelength dispersion characteristics by the simple method of coating the retardation film with the isotropic layer.