Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

2011-08-16

2011-08-16

Wood, Kevin S (Department: 2874)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S117000, C349S094000, C349S096000

Reexamination Certificate

active

07999894

ABSTRACT:
A liquid crystal display device includes a liquid crystal cell including a liquid crystal layer twist-aligned at 90° sandwiched between a pair of substrates, first and second polarizing layers arranged to sandwich the liquid crystal cell therebetween so that their absorption axes set to parallel with directions crossing aligning treatment directions of the substrates at 45°, and viewing angle compensating plates respectively arranged between the polarizing layers and the liquid crystal cell. A total value of retardations in a thickness direction, defined as a value of a product of a phase difference within a plane perpendicular to substrate surfaces of the liquid crystal cell and a layer thickness, of optical layers present between the polarizing layers is set to a value that substantially cancels out a retardation in a liquid crystal layer thickness direction when a saturation voltage is applied to the liquid crystal layer.

REFERENCES:
patent: 2007/0200986 (2007-08-01), Ong
patent: 2009/0122243 (2009-05-01), Sugiyama et al.
patent: 2006-285220 (2006-10-01), None

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