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. 01, 2014
Filed:
Nov. 19, 2010
Akinori Izaki, Ibaraki, JP;
Seiji Umemoto, Ibaraki, JP;
Shouji Yamamoto, Ibaraki, JP;
Kentarou Takeda, Ibaraki, JP;
Mitsuru Suzuki, Ibaraki, JP;
Akinori Izaki, Ibaraki, JP;
Seiji Umemoto, Ibaraki, JP;
Shouji Yamamoto, Ibaraki, JP;
Kentarou Takeda, Ibaraki, JP;
Mitsuru Suzuki, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, JP;
Abstract
Provided is an image display device including an image display cell and a polarizing plate placed on a viewer side of the image display cell. The first polarizing plate includes a polarizer and a first protective film. The first protective film is placed on a viewer-side principal surface of the polarizer and satisfies following relations: (i) 0 nm≦Re≦3000 nm; (ii) Nz≧7; and (iii) Rth>2500 nm. Re, Rthand Nzare defined by following equations: Re=(nx−ny)d; Rth=(nx−nz)d; and Nz=Rth/Re, wherein drepresents a thickness of the first protective film, nxrepresents a refractive index in a direction of an in-plane slow axis of the protective film, nyrepresents a refractive index in a direction of an in-plane fast axis of the protective film, and nzrepresents a refractive index in a direction of the thickness of the protective film.