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:
Sep. 05, 1995
Filed:
Jul. 12, 1993
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
359 73 ; 359 63 ;
Abstract
An electro-optic element, such as a liquid crystal, exhibits optical rotatory dispersion and includes a pair of phase difference films which have generally orthogonal stretching axes and are disposed between a pair of polarizing plates. The stretching axis directions of the phase difference films and the transmission axis directions of the polarizing plates are arranged relative to the molecular orientation of the surfaces of the liquid crystal cell to achieve an increase in the angle of visibility, an increase in contrast and improvements in color tones.