Optically compensated birefringence mode liquid crystal...

Details Optically compensated birefringence mode liquid crystal... Optically compensated birefringence mode liquid crystal...

2006-07-18

2006-07-18

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Nominal manufacturing methods or post manufacturing...

Aligning liquid crystal with means other than alignment layer

C349S130000, C349S169000, C349S181000

Reexamination Certificate

active

07079218

ABSTRACT:
An optically compensated birefringence mode liquid crystal display device includes first and second substrates facing and spaced apart from each other, a liquid crystal material layer between the first and second substrates, the liquid crystal material layer having a splay state when a voltage is not applied and having a bend state when a transition voltage is applied, a first compensation film on an outer surface of the first substrate, a first polarizing plate on the first compensation film, a second compensation film on an outer surface of the second substrate, and a second polarizing plate on the second compensation film, wherein the liquid crystal material layer in the splay state has a first retardation value (R1) satisfying according to:in-line-formulae description="In-line Formulae" end="lead"?1.35<R1/λ<1.75in-line-formulae description="In-line Formulae" end="tail"?the liquid crystal material layer in the bend state has a second retardation value (R2) according to:in-line-formulae description="In-line Formulae" end="lead"?0.5<R2/λ<0.7in-line-formulae description="In-line Formulae" end="tail"?when a white voltage for a white image is applied, and a third retardation value (R3) according to:in-line-formulae description="In-line Formulae" end="lead"?0.1<R3/λ<0.15in-line-formulae description="In-line Formulae" end="tail"?when a black voltage for a black image is applied.

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