Optical compensation sheet and liquid crystal display

Details Optical compensation sheet and liquid crystal display Optical compensation sheet and liquid crystal display

2007-05-15

2007-05-15

Ton, Toan (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S120000, C349S121000

Reexamination Certificate

active

09819800

ABSTRACT:
An optical compensation sheet comprising at least two optically anisotropic layers each formed by orienting an optically anisotropic compound, the orientation direction in the optically anisotropic layer plane of the optically anisotropic compound in the two optically anisotropic layers intersecting each other at an angle of from 80 to 100 degrees, wherein, viewing the two layers from one side of the sheet, one of the two layers, when the compound is uniaxial, is oriented so that a first angle of optic axis of the uniaxial optically anisotropic compound to the sheet plane increases continuously or stepwise in the thickness direction of the sheet, or when the compound is biaxial, is oriented so that a second angle of a direction giving maximum refractive index of the biaxial optically anisotropic compound to the sheet plane increases continuously or stepwise in the thickness direction of the sheet, and the other layer, when the compound is uniaxial, is oriented so that the first angle decreases continuously or stepwise in the thickness direction of the sheet, or when the compound is biaxial, is oriented so that the second angle decreases continuously or stepwise in the thickness direction of the sheet.

REFERENCES:
patent: 5196953 (1993-03-01), Yeh et al.
patent: 5646703 (1997-07-01), Kamada et al.
patent: 5694187 (1997-12-01), Abileah et al.
patent: 5805253 (1998-09-01), Mori et al.
patent: 5895106 (1999-04-01), VanderPloeg et al.
patent: 5978055 (1999-11-01), Van De Witte et al.
patent: 5990997 (1999-11-01), Jones et al.
patent: 6061113 (2000-05-01), Kawata
patent: 6064457 (2000-05-01), Aminaka
patent: 6115095 (2000-09-01), Suzuki et al.
patent: 6400433 (2002-06-01), Arakawa et al.
patent: 6630973 (2003-10-01), Matsuoka et al.
patent: 2002/0063828 (2002-05-01), Negoro et al.
patent: 0 887 691 (1998-12-01), None
patent: 0 926 533 (1999-06-01), None
patent: 56-66826 (1981-06-01), None
patent: 60-60624 (1985-04-01), None
patent: 62-195622 (1987-08-01), None
patent: 63-21381 (1988-01-01), None
patent: 63-96630 (1988-04-01), None
patent: 63-96631 (1988-04-01), None
patent: 02-196219 (1990-08-01), None
patent: 03-83017 (1991-04-01), None
patent: 04-97130 (1992-03-01), None
patent: 06-43457 (1994-02-01), None
patent: 07-146409 (1995-06-01), None
patent: 07-287120 (1995-10-01), None
patent: 07-333430 (1995-12-01), None
patent: 07-333433 (1995-12-01), None
patent: 08-005837 (1996-01-01), None
patent: 08-15681 (1996-01-01), None
patent: 08-027284 (1996-01-01), None
patent: 2640083 (1997-05-01), None
patent: 2641086 (1997-05-01), None
patent: 2692033 (1997-09-01), None
patent: 2692035 (1997-09-01), None
patent: 09-281331 (1997-10-01), None
patent: 2747789 (1998-02-01), None
patent: 2767382 (1998-04-01), None
patent: 10-186356 (1998-07-01), None
patent: 11133408 (1999-05-01), None
patent: 11-246692 (1999-09-01), None
patent: 2000-235117 (2000-08-01), None
patent: WO 98/12584 (1998-03-01), None
patent: WO 01/20392 (2001-03-01), None
P. van de Witte et al., Novel Compensation Foils for Active-Matrix TN Displays (SID 97 Digest at pp. 687-688, 690 and 693).
“Ekishou no Kagaku: quarterly publication”, Kagaku Sosetsu No. 22 (1994), p. 60-72, edited by Nihon Kagakukai (Gakkai Shuppan center).
S. Chandrasekhar et al., A Thermotropic Biaxial Nematic Liquid Crystal, Mol. Cryst. Liq. Cryst., 1988, vol. 165, pp. 123-130.
D. Demus et al., Handbook of Liquid Crystals, vol. 2B, Low Molecular Weight Liquid Crystals II, pp. 933-943, published by Wiley VCH Co.
Y. Toko et al. “Random Orientation Method for Twisting Orientation by Adding a Chiral agent”, J. Appl. Phys. A74 (3), p. 2071, (1993).
Polymer Preprins, Japan vol. 47, No. 11, 1998, pp. 2894-2895.

Affiliated with

Also associated with

Rating

Optical compensation sheet and liquid crystal display does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3775950