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. 29, 2012
Filed:
May. 15, 2008
Emi Higano, Ishikawa-gun, JP;
Kazuhiro Nishiyama, Kanazawa, JP;
Mitsutaka Okita, Hakusan, JP;
Shigesumi Araki, Kanazawa, JP;
Emi Higano, Ishikawa-gun, JP;
Kazuhiro Nishiyama, Kanazawa, JP;
Mitsutaka Okita, Hakusan, JP;
Shigesumi Araki, Kanazawa, JP;
Toshiba Matsushita Display Technology Co., Ltd., Tokyo, JP;
Abstract
A transflective liquid crystal display device includes a liquid crystal display panel which is configured such that a liquid crystal layer is held between a pair of substrates, and to which an OCB mode is applied, and a pair of optical elements which are disposed on outsides of the liquid crystal layer, and optically compensate a retardation of the liquid crystal layer in a predetermined display state in which a voltage is applied to the liquid crystal layer, wherein the optical element is configured to include a circular polarization element including a polarizer and a first retardation plate which imparts a retardation of ¼ wavelength, and the first retardation plate has such wavelength dispersion characteristics as to establish a relationship, α1<1, where α1 is a ratio of an in-plane retardation Re430 at a wavelength of 430 nm to an in-plane retardation Re550 at a wavelength of 550 nm.