Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Tadahiro Kaminade0
Toshikatsu Shoko0
Shinichi Komatsu0
Date of Patent
January 11, 2011
0Patent Application Number
123795330
Date Filed
February 24, 2009
0Patent Primary Examiner
Patent abstract
A retardation film, formed by stretching a film including a norbornene-based, ring-opening polymer containing a structural unit (A) represented by a formula (1), has high transparency, excellent wavelength dispersion characteristics in a single layer, is capable of providing specific retardation to broadband light, is extremely adhesive to other materials, is capable of attaining optical characteristics that are unique among negative birefringence characteristics, and is capable of providing a reverse dispersion of birefringence wavelength dispersion characteristics. The present invention also provides a liquid crystal display device using the foregoing film.
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