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:
Apr. 18, 2017
Filed:
Jul. 04, 2013
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Hironori Yaginuma, Ibaraki, JP;
Kentarou Takeda, Ibaraki, JP;
Takashi Shimizu, Ibaraki, JP;
Kazuki Uwada, Ibaraki, JP;
Nao Murakami, Ibaraki, JP;
NITTO DENKO CORPORATION, Ibaraki-shi, JP;
Abstract
There is provided a display apparatus that can suppress the occurrence of a crack in a circularly polarizing plate in its manufacturing process without reducing designability and mass productivity. A display apparatus according to an embodiment of the present invention includes: a display element; and a circularly polarizing plate placed on a viewer side of the display element. The circularly polarizing plate includes a polarizer and a retardation film. In-plane retardations of the retardation film satisfy a relationship represented by the below-indicated expression (1); and an angle θ1 formed between a slow axis of the retardation film and a direction in which a wiring crimping portion provided along at least one side of a peripheral edge portion of the display element extends satisfies a relationship represented by the below-indicated expression (2):(450)<(550)  (1)θ1≦70°  (2)where Re(450) and Re(550) represent in-plane retardations measured at 23° C., and at wavelengths of 450 nm and 550 nm, respectively.