Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – With viewing layer of specified composition
Reexamination Certificate
2007-05-01
2007-05-01
Dye, Rena L. (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, C349S121000
Reexamination Certificate
active
10859670
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 or 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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Elman James F.
Gamble William J.
Hurley Daniel F.
Dye Rena L.
Hon Sow-Fun
Nitto Denko Corporation
Westerman, Hattori, Daniels & Adrian , LLP.
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