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. 05, 2016
Filed:
Aug. 07, 2014
Sumitomo Chemical Company, Limited, Chuo-ku, Tokyo, JP;
Nobuyuki Hatanaka, Osaka, JP;
Akira Yokota, Osaka, JP;
Tadahiro Kobayashi, Osaka, JP;
Mitsutaka Sase, Niihama, JP;
Yoshifumi Komatsu, Niihama, JP;
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Abstract
To provide an elliptical polarization plate excellent in suppression of coloration and light leakage in display. An elliptical polarization plate having a transparent protective film pasted to one surface of a polarizer and an optically anisotropic film pasted to the other surface thereof, wherein, when measured under condition of incident polarization in the film normal direction from the side of the transparent protective film, the visibility corrected single body transmittance is 43.0% or more, the visibility corrected polarization degree is 95.0% or more, the single body hue value a* is −2.0 to 1.0 and the single body hue value b* is −1.0 to 5.0, and the optically anisotropic film satisfies the formulae (1), (2) and (3):(450)/(550)≦1.00  (1)1.00≦(650)/(550)  (2)100<(550)<160  (3).