Liquid-crystal display device

Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only

Reexamination Certificate

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C349S102000, C349S117000

Reexamination Certificate

active

07990502

ABSTRACT:
A liquid-crystal display device comprising a liquid-crystal cell, a first polarizing element and a second polarizing element disposed on either side of the liquid-crystal cell respectively, a first retardation layer between the first polarizing element and the liquid-crystal cell, and a second retardation layer between the second polarizing element and the liquid-crystal cell, wherein a transmission axis of the first polarizing element is perpendicular to the slow axis of the first retardation layer; and a transmission axis of the second polarizing element is parallel to the slow axis of the second retardation layer; and the first retardation layer and the second retardation layer satisfy the formula (1) 0 nm<ΔRe1(548)−ΔRe2(548)≦50 nm.

REFERENCES:
patent: 7410679 (2008-08-01), Matsufuji
patent: 2005/0163943 (2005-07-01), Uchiyama et al.
patent: 2009/0161045 (2009-06-01), Kawamoto et al.
patent: 2005-128520 (2005-05-01), None
patent: 2006-071876 (2006-03-01), None
patent: 2006-169303 (2006-06-01), None
patent: 2007-086748 (2007-04-01), None
patent: WO 2006/101249 (2006-09-01), None
patent: WO 2007/064029 (2007-06-01), None
Notification Concerning Transmittal of International Preliminary Report on Patentability (Forms PCT/IB/326, PCT/IB/373 and PCT/ISA/237) issued in corresponding International Application No. PCT/JP2008/061797 dated Jan. 14, 2010.
International Search Report (PCT/ISA/210) for PCT/JP2008/061797 mailed Sep. 30, 2008.
Written Opinion (PCT/ISA/237) for PCT/JP2008/061797 mailed Sep. 30, 2008.

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