Optical compensation film, polarizing plate and liquid...

Details Optical compensation film, polarizing plate and liquid... Optical compensation film, polarizing plate and liquid...

2008-03-18

2008-03-18

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S117000

Reexamination Certificate

active

10886434

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:in-line-formulae description="In-line Formulae" end="lead"?1.0<B<7.0in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?B=(Ro(589)−Ro(630))/(Ro(600)−Ro(630)).in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 6665032 (2003-12-01), Kikkawa
patent: 6937307 (2005-08-01), Ito et al.
patent: 2002/0005925 (2002-01-01), Arakawa
patent: 2002/0054261 (2002-05-01), Sekiguchi

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