Liquid crystal display device with improved field angles

Details Liquid crystal display device with improved field angles Liquid crystal display device with improved field angles

2007-03-20

2007-03-20

Dudek, James A. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S118000, C349S181000

Reexamination Certificate

active

10395637

ABSTRACT:
A liquid crystal display device includes a display element with a pair of substrates, a liquid crystal layer between the substrates, and an alignment film on a surface of at least one substrate facing the layer; a pair of polarizers on both surfaces of the liquid crystal element to sandwich the liquid crystal element; and at least one optical phase element between at least one of the polarizers and the liquid crystal element, wherein an optical refractive ellipsoid of the optical phase element is tilted clockwise or counterclockwise from the normal of a surface of the optical phase element, wherein at least one of rates of variation of an ordinary refractive index and an extraordinary refractive index of a liquid crystal material of the liquid crystal layer with respect to a wavelength is set in a range where viewing angle dependent coloring does not occur on a screen.

REFERENCES:
patent: 5506706 (1996-04-01), Yamahara et al.
patent: 5638200 (1997-06-01), Xu
patent: 5844649 (1998-12-01), Yamahara et al.
patent: 5895106 (1999-04-01), VanderPloeg et al.
patent: 6141075 (2000-10-01), Ohmuro
patent: 5-59365 (1993-06-01), None
patent: 6-75116 (1994-03-01), None
An Office Action that is dated Nov. 28, 2003 and that was issued in connection with counterpart Japanese Patent Application No. 2002-341559.
An Office Action that is dated Nov. 28, 2003 and that was issued in connection with counterpart Japanese Patent Application No. 2002-341563.

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