Liquid crystal display element and projection display device

Details Liquid crystal display element and projection display device Liquid crystal display element and projection display device

2007-01-23

2007-01-23

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

With specified nonchemical characteristic of liquid crystal...

Within nematic phase

C349S167000, C349S180000, C349S181000

Reexamination Certificate

active

11090252

ABSTRACT:
An active matrix drive type liquid crystal display element capable of preventing deterioration of display capability caused by a stripe domain, and a projection type display device using the liquid crystal display element, by which there is provided a projection type display device comprising a light source; a light convergence optical system for guiding a light emitted from said light source to a liquid crystal display element; and a projection optical system for enlarging and projecting a light subjected to light modulation by said liquid crystal display element; wherein the liquid crystal display element is configured by holding a liquid crystal layer between a pair of substrates arranged to face to each other, and a twisted nematic type liquid crystal material used in the liquid crystal layer satisfies dielectric constant anisotropy Δε of 0<Δε<8 and twist elasticity modulus K22of K22>6.0 pN when the refractive index anisotropy Δn is 0.16≦Δn≦0.18 and satisfies dielectric constant anisotropy Δε of 0<Δε<13 and twist elasticity modulus K22of K22>3.0 pN when the refractive index anisotropy Δn is 0.18≦Δn≦0.20.

REFERENCES:
patent: 6356332 (2002-03-01), Ichikawa et al.
patent: 2002/0039167 (2002-04-01), Kitahora et al.
patent: 2002/0054266 (2002-05-01), Nishimura
patent: 2002/0097369 (2002-07-01), Yanagida et al.
patent: 2003/0151710 (2003-08-01), Tanaka et al.
patent: 05100207 (1993-04-01), None
patent: 08-101403 (1996-04-01), None
patent: 2001-265255 (2001-09-01), None

Affiliated with

Also associated with

Rating

Liquid crystal display element and projection display device 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 display element and projection display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal display element and projection display device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3798289