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. 18, 2008
Filed:
Jul. 07, 2004
Hiroki Umeda, Hino, JP;
Takatoshi Yajima, Hachioji, JP;
Noriyasu Kuzuhara, Kunitachi, JP;
Koji Tasaka, Hachioji, JP;
Hiroki Umeda, Hino, JP;
Takatoshi Yajima, Hachioji, JP;
Noriyasu Kuzuhara, Kunitachi, JP;
Koji Tasaka, Hachioji, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
An optical compensation film wherein: (i) molecules of a liquid crystalline compound are oriented in a manner that an average tilt angle of the compounds is not more than 4 degrees; (ii) the orientation is fixed; (iii) Ro(λ) values are: at wavelength 589 nm: 40-130 nm; at 600 nm: 35-125 nm; and at 630 nm: 35-120 nm; (iv) Rt(λ) value are 120-400 400 nm in λ range of 500-630 nm; and (v) Values of Ro(589), Ro(600) and Ro(630) satisfy the following formulae:1.0<<7.0=((589)−(630))/((600)−(630)).