Liquid crystal display device

Details Liquid crystal display device Liquid crystal display device

2005-09-22

2011-11-15

Caley, Michael (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S117000

Reexamination Certificate

active

08059240

ABSTRACT:
A novel liquid crystal display device is disclosed. the device comprises a liquid crystal cell comprising a pair of substrates disposed facing each other, at least one of said pair of substrates having an electrode thereon, and a liquid crystal layer held between said pair of substrates, comprising a nematic liquid crystal material, molecules of which being oriented nearly normal to the surfaces of said pair of substrates in a black state, a first and a second polarizing films disposed while placing said liquid crystal cell in between; and at least two optically anisotropic films, each of them disposed respectively between said liquid crystal layer and each of said first and said second polarizing films, wherein, assuming thickness of said liquid crystal layer as d (nm), refractive index anisotropy of said liquid crystal layer at wavelength λ (nm) as Δn (λ), and in-plane retardation of said optical compensation film at wavelength λ as Re(λ), relations (I) to (IV) below are satisfied at least at two different wavelengths in a wavelength range from 380 nm to 780 nm:in-line-formulae description="In-line Formulae" end="lead"?200≦Δn(λ)×d≦1000   (I)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Rth(λ)/λ=A×Δn(λ)×d/λ+B;  (II)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?Re(λ)/λ=C×λ/{Δn(λ)×d}+D; and   (III)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?0.488≦A≦0.56, B=−0.0567, −0.041≦C≦0.016; and D=0.0939.   (IV)in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
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patent: 10-312166 (1998-11-01), None
patent: 2004-37837 (2004-02-01), None
patent: 2004-062023 (2004-02-01), None
patent: 2004-133171 (2004-04-01), None
International Preliminary Report on Patentability dated Mar. 27, 2007 in English.
International Search Reported for PCT/JP2005/018046 dated Nov. 8, 2005.

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