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. 29, 2009
Filed:
May. 01, 2008
Kentarou Takeda, Osaka, JP;
Takeharu Kitagawa, Osaka, JP;
Daisuke Hayashi, Osaka, JP;
Hideki Ishida, Osaka, JP;
Nao Murakami, Osaka, JP;
Junichi Nagase, Osaka, JP;
Kentarou Takeda, Osaka, JP;
Takeharu Kitagawa, Osaka, JP;
Daisuke Hayashi, Osaka, JP;
Hideki Ishida, Osaka, JP;
Nao Murakami, Osaka, JP;
Junichi Nagase, Osaka, JP;
Nitto Denko Corporation, Ibaraki-shi, JP;
Abstract
The liquid crystal panel according to an embodiment of the present invention includes, in the stated order from a viewer side: a first polarizer; a first optical compensation layer; a liquid crystal cell; a second optical compensation layer; and a second polarizer, wherein: the first optical compensation layer has an absolute value of a photoelastic coefficient of 40×10(m/N) or less, has an in-plane retardation Δnd of 90 nm to 200 nm, has relationships of the following Expressions (1) and (2), and functions as a protective layer on a liquid crystal cell side of the first polarizer; and the second optical compensation layer has relationships of the following Expressions (3) and (4),Δnd(380)=Δnd(550)=Δnd(780)  (1)nx>ny>nz  (2)Rth(380)>Rth(550)>Rth(780)  (3)nx=ny>nz  (4).