Optical film, polarizing optical film, and image viewing...

Details Optical film, polarizing optical film, and image viewing... Optical film, polarizing optical film, and image viewing...

2006-10-31

2006-10-31

Ton, Toan (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S096000, C349S141000, C428S001300

Reexamination Certificate

active

07130007

ABSTRACT:
An optical film 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 so that an Nz coefficient may satisfy a relationship of Nz≦0.9 and a front retardation (Re) may satisfy a relationship of Re≧80 nm, has characteristics of giving wide viewing angle and also outstanding durability.

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