Elliptically polarizing plate comprising discotic liquid crystal

Details Elliptically polarizing plate comprising discotic liquid crystal Elliptically polarizing plate comprising discotic liquid crystal

1994-11-21

1996-10-22

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 73, G02F 11335

Patent

active

055682901

ABSTRACT:
Disclosed is an elliptically polarizing plate comprising a polarizing film and an optical compensatory sheet provided, in which the compensatory sheet has an optically negative monoaxial property and a direction of a minimum retardation inclined at 5 to 50 degrees from the normal of the sheet. A process for preparation of the elliptically polarizing plate, and a liquid crystal display provided with the elliptically polarizing plate are also disclosed.

REFERENCES:
patent: 4272694 (1981-06-01), Jacobs
patent: 4430650 (1984-02-01), Billard et al.
patent: 4678287 (1987-07-01), Buhrer
patent: 5189538 (1993-02-01), Arakawa
patent: 5326496 (1994-07-01), Iida et al.
patent: 5375006 (1994-12-01), Haas
Hecht, "Schaum's Outline Series Theory and Problems of Optics", McGraw Hill Book Co., 1975, pp. 99-101.

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