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Title:
POLARIZING PLATE HAVING REFLECTION PREVENTION FUNCTION, AND LIQUID CRYSTAL DISPLAY
Document Type and Number:
Japanese Patent JP2003344656
Kind Code:
A
Abstract:

To provide a polarizing plate that can simultaneously satisfy three points, namely high transmittance, high degree of polarization, and high color reproducibility, and is capable of high color reproducibility in a liquid crystal display; and to provide an image display using the polarizing plate.

The polarizing plate has a polarizer formed by a polyvinylalcohol-based film and has a simple substance of 44.0% or higher and a polarization of 99.90% or higher. A multilayer reflection prevention layer is formed on the surface of the polarizing board. A parallel transmittance of Tp440[%] at a wavelength of 440 nm, a parallel transmittance of Tp550[%] at a wavelength of 550 nm, and a parallel transmittance of Tp610[%] at a wavelength of 610 nm satisfy the following expressions (1) and (2). In the polarizing plate, 0.85≤Tp440/Tp550≤1.10...(1) 0.95≤Tp610/Tp550≤1.10...(2), and orthogonal transmittance at 440 nm, 550 nm, 610 nm wavelength is all 0.10% or less.


Inventors:
KONDO SENRI
SAKURAMOTO TAKAFUMI
MATSUURA HIROTAKA
Application Number:
JP2002150140A
Publication Date:
December 03, 2003
Filing Date:
May 24, 2002
Export Citation:
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Assignee:
NITTO DENKO CORP
International Classes:
G02B5/30; G02B1/10; G02B1/11; G02B1/111; G02B1/115; G02B1/14; G02F1/1335; (IPC1-7): G02B5/30; G02B1/10; G02B1/11; G02F1/1335
Attorney, Agent or Firm:
Ikeuchi, Sato & Partners