Liquid crystal display device, method for producing the same, an

Details Liquid crystal display device, method for producing the same, an Liquid crystal display device, method for producing the same, an

1998-05-05

2000-07-11

Sikes, William L.

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

349 5, 349 10, 349183, G02F 11335, G02F 11333, C09K 1902

Patent

active

060880759

ABSTRACT:
A liquid crystal display device includes a pair of substrates; a liquid crystal layer interposed between the pair of substrates; and an electrode for applying a voltage to the liquid crystal layer. The liquid crystal layer includes a polymer dispersed liquid crystal material having a polymer phase and a liquid crystal phase, and fulfills the conditions represented by: R.multidot..DELTA.n>0.3 and 8R<d where d represents the thickness of the liquid crystal layer in the unit of micrometers, R represents the characteristic length of the liquid crystal phase in the unit of micrometers, and .DELTA.n represents the birefringence of a liquid crystal material forming the liquid crystal phase, and the liquid crystal phase fulfills the conditions represented by: R.multidot..DELTA.n>0.35 and d<1.2dc where dc represents a minimum thickness of the liquid crystal layer which allows a scattering gain of the liquid crystal layer to change by 20% or less when the thickness of the liquid crystal layer changes by 10%.

REFERENCES:
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patent: 5331446 (1994-07-01), Hirai et al.
patent: 5604612 (1997-02-01), Coates et al.
patent: 5621552 (1997-04-01), Coates et al.
patent: 5734454 (1998-03-01), Omae et al.
J. William Doane, "Polymer Dispersed Liquid Crystal Displays", Liquid Crystals, Applications and Uses, vol. 1, Chapter 14, pp. 361-395, 1990.

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