Title:
LIQUID CRYSTAL DISPLAY DEVICE, POLARIZING PLATE, AND POLARIZER PROTECTIVE FILM
Document Type and Number:
Japanese Patent JP2015079129
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid crystal display device that suppresses generation of iridescent speckles when an oriented polyester film is used as both of polarizer protective films in a pair of polarizing plates.SOLUTION: The liquid crystal display device includes a backlight light source, two polarizing plates, and a liquid crystal cell disposed between the two polarizing plates. The backlight light source is a white light source having a continuous emission spectrum. The polarizing plate is constituted by laminating polarizer protective film on either side of a polarizer. In the polarizer protective films, at least one of polarizer protective films of the polarizing plate disposed on a side where light enters, and at least one of polarizer protective films of the polarizing plate disposed on a side where light exits are made of an oriented polyester film. The oriented polyester film comprises a polyester resin polymerized by using a germanium compound as a polymerization catalyst and has a retardation of 4000 to 30000 nm and an Nz coefficient of 1.70 or less.
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Inventors:
MURATA KOICHI
SASAKI YASUSHI
HAYASHIBARA MIKIYA
SASAKI YASUSHI
HAYASHIBARA MIKIYA
Application Number:
JP2013216244A
Publication Date:
April 23, 2015
Filing Date:
October 17, 2013
Export Citation:
Assignee:
TOYO BOSEKI
International Classes:
G02F1/1335; B32B7/02; B32B27/36; G02B5/30