Compositions – Liquid crystal compositions
Reexamination Certificate
2008-01-22
2011-11-08
Visconti, Geraldina (Department: 1722)
Compositions
Liquid crystal compositions
C252S299600, C252S299610, C252S299620, C252S299630, C428S001100, C428S001300, C430S020000, C556S416000, C556S432000, C556S438000, C349S167000, C349S182000
Reexamination Certificate
active
08052891
ABSTRACT:
Disclosed are a novel fluorene derivative, a liquid crystal composition comprising the same, and an optical film using the same liquid crystal composition. More particularly, there are provided a liquid crystal material for a viewing angle compensation film with high quality characteristics, which can improve a contrast ratio measured at an oblique angle to the front and minimize variations in color with viewing angles in a black state, a liquid crystal composition comprising the same liquid crystal material, and a compensation film obtained from the same liquid crystal composition.
REFERENCES:
patent: 2004/0222403 (2004-11-01), Sasada et al.
patent: 2010/0051867 (2010-03-01), Cheong et al.
patent: 2010/0078594 (2010-04-01), Cheong et al.
patent: 2005-281171 (2005-10-01), None
patent: 2005-281171 (2005-10-01), None
patent: 2006-227253 (2006-08-01), None
patent: WO 2006/115112 (2006-11-01), None
Cheong Jae-Ho
Choi Bum-Gyu
Kang Dae-Ho
Kim Yun-Bong
Ko Min-Jin
LG Chem Ltd.
McKenna Long & Aldridge LLP
Visconti Geraldina
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