Optical film, elliptically polarizing plate and image display

Details Optical film, elliptically polarizing plate and image display Optical film, elliptically polarizing plate and image display

2005-05-10

2005-05-10

Dudek, James A. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S118000, C349S119000

Reexamination Certificate

active

06891589

ABSTRACT:
A laminated optical film including an optical film (1) whose three dimensional refractive index is controlled so that an Nz coefficient represented with Nz=(nx1−nz1)/(nx1−ny1) satisfies a relationship of Nz≦0.9, when a direction where a refractive index in a film plane gives maximum is defined as X-axis, a direction perpendicular to X-axis as Y-axis, a thickness direction of the film as Z-axis, and refractive indexes in each axial direction are defined as nx1, ny1, and nz1, respectively, and an optical film (2) that is formed with a material showing optically negative uniaxial property, and being tilting aligned.The laminated optical film may suppress coloring of the display, and may display a picture with few tone reversal regions.

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