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:
May. 20, 2014
Filed:
Apr. 07, 2011
Nao Murakami, Ibaraki, JP;
Motoko Kawasaki, Ibaraki, JP;
Hiroyuki Yoshimi, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, JP;
Abstract
An optical compensation film according to an embodiment of the present invention includes: non-liquid crystal polymers arranged in a tilt alignment, wherein the optical compensation film satisfies the following expressions (1) and (2):3 []≦()×  (1)and5°<β,  (2)where, when an X-axis and a Y-axis, which are plane direction axes of a three-dimensional coordinate system, are perpendicular to each other and an axis vertical to the X-axis and the Y-axis in a thickness direction is defined as a Z-axis, nx and ny indicate a maximum refractive index and a minimum refractive index in an XY-plane of the optical compensation film, respectively, d indicates a film thickness [nm], and β indicates an angle formed between a direction for providing the minimum refractive index ny and a direction for providing a maximum refractive index nb in a YZ-plane of the optical compensation film.