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:
Nov. 22, 2011
Filed:
Dec. 04, 2008
Applicants:
Jin Woo Lee, Uiwang-si, KR;
Chang Gyu Im, Uiwang-si, KR;
Bang Duk Kim, Uiwang-si, KR;
Sun Hong Park, Uiwang-si, KR;
Sei Jin OH, Uiwang-si, KR;
Inventors:
Jin Woo Lee, Uiwang-si, KR;
Chang Gyu Im, Uiwang-si, KR;
Bang Duk Kim, Uiwang-si, KR;
Sun Hong Park, Uiwang-si, KR;
Sei Jin Oh, Uiwang-si, KR;
Assignee:
Cheil Industries, Inc., Gumi-si, Gyeongsangbuk-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A light diffusion film includes a thermoplastic resin, a surface of the light diffusion film has a roughness (Ra) of about 0.5 to about 3 μm and a height distribution index (HDI) of about 3 to about 8 μm, and the light diffusion film has a retardation of not more than about 25 nm.