Liquid crystal display device and projector

Details Liquid crystal display device and projector Liquid crystal display device and projector

2008-08-18

2010-11-30

Nelms, David (Department: 2883)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S119000, C349S177000, C349S179000, C349S186000, C349S101000

Reexamination Certificate

active

07843536

ABSTRACT:
A liquid crystal display device includes: a liquid crystal cell including liquid crystal operating in a twisted nematic mode; a first quartz plate optically compensating for the liquid crystal cell; a second quartz plate optically compensating for the liquid crystal cell; and a pair of polarizing elements disposed with the liquid crystal cell, the first quartz plate, and the second quartz plate interposed therebetween. Here, the thickness d [μm] of the first and second quartz plates, the polar angle θ [°] of the optical axis of the first and second quartz plates, and the cell gap CG [μm] of the liquid crystal cell satisfy the following conditional expressions:in-line-formulae description="In-line Formulae" end="lead"?0.7(16 cos2θ−23.6 cos θ+14.6)(1+0.32(CG−3.0))<d  (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?d<1.3(16 cos2θ−23.6 cos θ+14.6))(1+0.32(CG−3.0))  (2).in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 4266859 (1981-05-01), Togashi
patent: 5479282 (1995-12-01), Toko et al.
patent: 5499126 (1996-03-01), Abileah et al.
patent: A 2004-198650 (2004-07-01), None

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