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:
Dec. 06, 2016
Filed:
Sep. 20, 2012
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Chang Song Lee, Daejeon, KR;
Ho Kyung Lee, Daejeon, KR;
Eungki Lee, Chungcheongbuk-do, KR;
DaeHyeon Kim, Daejeon, KR;
Eung Jin Jang, Chungcheongbuk-do, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05C 3/09 (2006.01); G02B 5/30 (2006.01); B05D 1/18 (2006.01); G02B 1/08 (2006.01); G02B 1/10 (2015.01);
U.S. Cl.
CPC ...
G02B 5/3033 (2013.01); B05C 3/09 (2013.01); B05D 1/18 (2013.01); G02B 1/08 (2013.01); G02B 5/3041 (2013.01); G02B 1/105 (2013.01);
Abstract
An apparatus for controlling a color of a film includes a dyeing bath to dip a washed PVA film in an aqueous iodine solution and an aqueous potassium solution and then dye the PVA film therewith, a complementary bath to dip the PVA film in an aqueous potassium solution and then dye the PVA film therewith, a device oven to dry the PVA film having the oriented iodine and potassium, a 4-stage oven to dry the PVA film dried in the device oven, and a central controller to predict a color value of the polarizing film.