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:
Jan. 13, 2015
Filed:
Dec. 20, 2012
Eun Kyeong Seo, Uiwang-si, KR;
Dong Yoon Shin, Uiwang-si, KR;
AE Kyoung Kim, Uiwang-si, KR;
A Ra JO, Uiwang-si, KR;
SO Hee Yu, Uiwang-si, KR;
IL Woong Baek, Uiwang-si, KR;
Min Jung Kim, Uiwang-si, KR;
Hae Ryong Chung, Uiwang-si, KR;
Eun Kyeong Seo, Uiwang-si, KR;
Dong Yoon Shin, Uiwang-si, KR;
Ae Kyoung Kim, Uiwang-si, KR;
A Ra Jo, Uiwang-si, KR;
So Hee Yu, Uiwang-si, KR;
Il Woong Baek, Uiwang-si, KR;
Min Jung Kim, Uiwang-si, KR;
Hae Ryong Chung, Uiwang-si, KR;
Cheil Industries, Inc., Gumi-si, Kyeongsangbuk-do, KR;
Abstract
A polarizing plate includes a polarizer; and a protective film attached to at least one side of the polarizer via an adhesive layer. The adhesive layer is formed of a water-based adhesive including a polyvinyl alcohol resin, a zirconium compound, and an imine crosslinking agent. The polarizing plate has a variation in light transmittance (|B−A|) from 0% to about 0.25% at wavelengths from 400 nm to 780 nm, where A is an average value of initial light transmittance of the polarizing plate at wavelengths from 400 nm to 780 nm, and B is an average value of light transmittance of the polarizing plate at wavelengths from 400 nm to 780 nm measured after the polarizing plate has been dipped in water of 25° C. for 3 hours, followed by drying at 25° C. for 2 hours.