Multilayer optical compensator, liquid crystal display, and...

Details Multilayer optical compensator, liquid crystal display, and... Multilayer optical compensator, liquid crystal display, and...

2007-10-30

2007-10-30

Dye, Rena (Department: 1772)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With viewing layer of specified composition

C428S001100, C427S162000, C427S163300, C349S117000, C349S118000, C349S119000, C349S120000

Reexamination Certificate

active

11159683

ABSTRACT:
A multilayer compensator includes one or more polymeric first layers and one or more polymeric second layers. The first layers comprise a polymer having an out-of-plane (Δnth) birefringence not more negative than −0.01 and not more positive than +0.01. The second layers comprise an amorphous polymer having an out-of-plane birefringence more negative than −0.01 or more positive than +0.01. An overall in-plane retardation (Rin) of the multilayer compensator is greater than 20 nm and the out-of-plane retardation (Rth) of the multilayer compensator is more negative than −20 nm or more positive than +20 nm. The in-plane retardation (Rin) of the one or more first layers is 30% or less of the overall in-plane retardation (Rin) of the multilayer compensator.

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