Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1997-12-23
2000-12-19
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349 75, 349118, 349119, G02F 11335, G02F 11347
Patent
active
061633542
ABSTRACT:
A liquid crystal display device of the present invention has an arrangement wherein between (a) a liquid crystal display element prepared by inserting a liquid crystal layer to a spacing between a pair of electrode substrates and (b) a pair of polarizers provided on the both sides of the liquid crystal display element, there is provided at least one phase difference plate having a negative refractive index anisotropy whose optical axis is inclined with respect to a direction normal to the surface thereof, and a change, with a wavelength of light, in the refractive index anisotropy of a liquid crystal material constituting the liquid crystal layer is set in a range which does not generate viewing-angle-dependant coloration on a liquid crystal screen. This (1) eliminates a phase difference generated in the liquid crystal display element in accordance with viewing angles and (2) effectively prevents a coloration phenomenon on the liquid crystal screen which is generated especially when the viewing angle becomes wider, thereby realizing a liquid crystal display device capable of displaying a high quality image.
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Inoue Iichiro
Yamahara Motohiro
Chowdhury Tarifur R.
Conlin David G.
Sharp Kabushiki Kaisha
Sikes William L.
Tucker David A.
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