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:
Dec. 23, 2008
Filed:
Feb. 15, 2006
Ikuo Kawamoto, Ibaraki, JP;
Seiji Umemoto, Ibaraki, JP;
Takashi Kamijou, Ibaraki, JP;
Hideyuki Yonezawa, Ibaraki, JP;
Kazuya Hada, Ibaraki, JP;
Ikuo Kawamoto, Ibaraki, JP;
Seiji Umemoto, Ibaraki, JP;
Takashi Kamijou, Ibaraki, JP;
Hideyuki Yonezawa, Ibaraki, JP;
Kazuya Hada, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Abstract
The present invention provides a method of producing an elliptically polarizing plate including the steps of: forming a first birefringent layer on a surface of a transparent protective film; laminating a polarizer on a surface of the transparent protective film; forming a second birefringent layer on a surface of the first birefringent layer; and forming a third birefringent layer on a surface of the second birefringent layer. The first birefringent layer is arranged on the opposite side against the polarizer with respect to the transparent protective film. The step of forming the first birefringent layer includes the steps of: applying a liquid crystal material onto a substrate subjected to an alignment treatment; treating the applied liquid crystal material, so as to form the first birefringent layer on the substrate; and transferring the first birefringent layer onto a surface of the transparent protective film.