Optical integrator

Details Optical integrator Optical integrator

2004-12-08

2010-11-16

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

Reexamination Certificate

active

07834963

ABSTRACT:
A method of manufacturing an optical integrator panel is provided. The method comprises the steps of: suspending a plurality of elongate particles in a liquid; applying an electric or magnetic field to the suspension to orientate the particles with parallel longitudinal axes; and solidifying the liquid to fix the orientation of the particles, thereby forming an optical integrator panel having a homogeneous distribution of elongate particles. An optical integrator panel is also provided. The optical integrator panel is adapted to reduce the angular dependence of contrast of a liquid crystal display. Specifically, the optical integrator panel is for placement in the path of reflected or transmitted light emitted by the liquid crystal display. The optical integrator panel comprises: a solid transparent panel; and a plurality of elongate particles homogeneously distributed in the panel, wherein the plurality of elongate particles are orientated with parallel longitudinal axes.

REFERENCES:
patent: 4221697 (1980-09-01), Osborn et al.
patent: 5995183 (1999-11-01), Tsuyoshi
patent: 6002464 (1999-12-01), Fujisawa et al.
patent: 6731359 (2004-05-01), Fukaya
patent: 2004/0081498 (2004-04-01), Tu

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