Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Reexamination Certificate
2006-07-18
2006-07-18
Nguyen, Dung T. (Department: 2871)
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
C349S096000
Reexamination Certificate
active
07079204
ABSTRACT:
A laminated optical film comprising an optical film (1) obtained by stretching a polymer film comprising a polycarbonate resin and a styrene resin, wherein a photoelastic coefficient is 2.0×10−11to 6.0×10−11m2/N, and a three dimensional refractive index is controlled, an optical film (2) showing optically positive uniaxial property that satisfies a relationship of nx2>ny2≅nz2, and an optical film (3) formed of a material showing optically negative uniaxial property, and the material being tilting aligned, enables inhibition of coloring of display image for observation of a display picture in a diagonal direction to normal line of a screen, and enables display of an image having little gradation inversion areas, and that has outstanding durability.
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Korean Office Action dated Feb. 21, 2006 Corresponding Korean Patent Application No. 10-2004-0044661.
Chung David
Nguyen Dung T.
Nitto Denko Corporation
Westerman Hattori Daniels & Adrian LLP
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