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. 27, 2020
Filed:
Aug. 10, 2016
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Toshiyuki Iida, Ibaraki, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
There is provided a polarizing plate with optical compensation layers that achieves an excellent reflection hue and viewing angle characteristic, and has an excellent mechanical strength. The polarizing plate with optical compensation layers includes a polarizer, an optically anisotropic layer, a first optical compensation layer, and a second optical compensation layer in this order. The optically anisotropic layer shows a refractive index characteristic of nx≥ny>nz, and has an Re(550) of from 0 nm to 20 nm and an Rth(550) of from 5 nm to 100 nm. The first optical compensation layer shows a refractive index characteristic of nx>ny≥nz, and satisfies a relationship of Re(450)<Re(550). The second optical compensation layer shows a refractive index characteristic of nz>nx≥ny. A laminate of the first optical compensation layer and the second optical compensation layer has an Re(550) of from 120 nm to 160 nm and an Rth(550) of from −50 nm to 80 nm.