Optical device, polarizing plate, diffuser, diffusing film,...

Details Optical device, polarizing plate, diffuser, diffusing film,... Optical device, polarizing plate, diffuser, diffusing film,...

2007-08-27

2009-08-11

Nelms, David (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

Reexamination Certificate

active

07573549

ABSTRACT:
An optical device includes a plastic-based film and a diffusing layer. The diffusing layer includes inner scattering elements that selectively scatter visible light having a wavelength range, and has pencil hardness of more than 2H under a 500 g-load specified in ISO/DIS 15184. When the optical device is arranged at a front side of a liquid crystal display apparatus that displays color near 8 test colors specified in CIE 1974, as a test color, chrominance Δu′v′ of less than 0.05 is obtained based on a chromaticity coordinate (u0′, v0′) of CIE1976UCS observed in the front surface100A1of the liquid crystal display apparatus and a chromaticity coordinate (u′, v′) observed at an observation angle of ±60 degrees in horizontal and vertical directions of a screen of the liquid crystal display apparatus when a direction perpendicular to the screen is assumed to be 0 degrees.

REFERENCES:
patent: 10-10513 (1998-01-01), None
patent: 2004-4763 (2004-01-01), None

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