Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2005-01-07
2009-06-23
Nelms, David (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
Reexamination Certificate
active
07551251
ABSTRACT:
Disclosed is a liquid crystal display device including a liquid crystal layer sandwiched between two substrates; two polarizers each provided on an outer side of respective one of the first and second substrates; and a compensation film provided between the polarizer and the substrate, wherein the retardation of the biaxial film satisfies the following formulae (1)-(3) and/or (4)-(5):in-line-formulae description="In-line Formulae" end="lead"?1≦R0(450)/R0(λ0)≦1.3 (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?1.1≦R0(650)/R0(λ0)≦2.1 (2)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?100 nm≦R0(λ0)≦240 nm (3)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?1≦R0(380)/R0(λ0)≦2 (4)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?1.2≦R0(780)/R0(λ0)≦2.7 (5)in-line-formulae description="In-line Formulae" end="tail"?where R0(380), R0(450), R0(650), R0(780) and R0(λ0) represent the retardation of the biaxial film at wavelengths of 380 nm, 450 nm, 650 nm, 780 nm and λ0, respectively, and λ0is the value calculated by λ0=[ne−no]×d/k (where neand norepresent the refractive indices of the liquid crystal, d represents the cell gap defined between the two substrates, and k is a constant, 0.55≦k ≦1).
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Briggs Nathanael R
Chi Mei Optoelectronics Corp.
Nelms David
Trop Pruner & Hu P.C.
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