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. 03, 2017
Filed:
Jan. 23, 2014
Zeon Corporation, Tokyo, JP;
Kazuki Takagi, Tokyo, JP;
Hung Trong La, Tokyo, JP;
ZEON CORPORATION, Tokyo, JP;
Abstract
A layered phase difference film including, in the following order: a resin layer Aformed of a resin Ahaving a positive intrinsic birefringence; a resin layer B formed of a resin B having a negative intrinsic birefringence; and a resin layer Aformed of a resin Ahaving a positive intrinsic birefringence, wherein the resin layer Aand the resin layer B are in direct contact with each other, the resin layer B and the resin layer Aare in direct contact with each other, the resin layer Aand the resin layer Aare negative C-plates, the resin layer B is a positive B-plate, and the layered phase difference film has an Nz coefficient within a range of 0 to 1.