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:
Mar. 30, 2010
Filed:
Oct. 20, 2004
Naru Usukura, Tenri, JP;
Manabu Abiru, Nara, JP;
Takayuki Natsume, Tenri, JP;
Koji Yamabuchi, Nara, JP;
Makoto Nakahara, Nara, JP;
Naru Usukura, Tenri, JP;
Manabu Abiru, Nara, JP;
Takayuki Natsume, Tenri, JP;
Koji Yamabuchi, Nara, JP;
Makoto Nakahara, Nara, JP;
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Abstract
A circularly polarizing plate includes a λ/4 phase difference plate and a linearly polarizing plate overlaid on a main surface of the λ/4 phase difference plate and having an absorption axis forming an angle of about 45° with respect to a lagging axis of the λ/4 phase difference plate. The λ/4 phase difference plate has reverse wavelength dispersion characteristics and an Nz coefficient of 1.6 or more. Employment of this structure can provide the circularly polarizing plate having good view angle characteristics and a vertical alignment type of liquid crystal display panel having the same.