Liquid crystal panel and liquid crystal display apparatus

Details Liquid crystal panel and liquid crystal display apparatus Liquid crystal panel and liquid crystal display apparatus

2007-05-11

2010-10-12

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S097000, C349S098000

Reexamination Certificate

active

07812901

ABSTRACT:
It is an object of the present invention to provide a liquid crystal display panel having a high contrast ratio in a front direction.A liquid crystal panel according to an embodiment of the present invention includes: a liquid crystal cell; a first polarizing plate placed on one side of the liquid crystal cell; a second polarizing plate placed on the other side of the liquid crystal cell; and a retardation layer placed between the liquid crystal cell and the second polarizing plate. A refractive index ellipsoid of the retardation layer exhibits a relationship of n≧ny>nz; and a light transmittance (T2) of the second polarizing plate is larger than a light transmittance (T1) of the first polarizing plate. Such a liquid crystal panel has a remarkably higher contrast ratio in a front direction than that of a conventional liquid crystal panel (for example, a liquid crystal panel in which the light transmittances of two polarizing plates placed on both sides of a liquid crystal cell are the same), and shows excellent display properties.

REFERENCES:
patent: 7012663 (2006-03-01), Ono
patent: 7215839 (2007-05-01), Kawahara et al.
patent: 7336857 (2008-02-01), Kawahara et al.
patent: 7391935 (2008-06-01), Kawahara et al.
patent: 2004/0125292 (2004-07-01), Maeda
patent: 2004/0239852 (2004-12-01), Ono et al.
patent: 2006/0028601 (2006-02-01), Kawahara et al.
patent: 2006/0098147 (2006-05-01), Murakami
patent: 2006/0109404 (2006-05-01), Maeda
patent: 2006/0227423 (2006-10-01), Saiki et al.
patent: 2006/0257078 (2006-11-01), Kawahara et al.
patent: 2007/0177087 (2007-08-01), Kawahara et al.
patent: 07-120745 (1995-05-01), None
patent: 7-318925 (1995-12-01), None
patent: 10-221684 (1998-08-01), None
patent: 2000-029017 (2000-01-01), None
patent: 2002-006137 (2002-01-01), None
patent: 2004-206067 (2004-07-01), None
patent: 3648240 (2005-05-01), None
patent: 2005-148226 (2005-06-01), None
patent: 2006-091369 (2006-04-01), None
patent: 2006-133626 (2006-05-01), None
patent: 1020060009837 (2006-02-01), None
patent: 1020060050240 (2006-05-01), None
patent: 03-032060 (2003-04-01), None
International Search Report of PCT/JP2007/059744, date of mailing Aug. 12, 2007.

Affiliated with

Also associated with

Rating

Liquid crystal panel and liquid crystal display apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liquid crystal panel and liquid crystal display apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal panel and liquid crystal display apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4232116