POLARIZING PLATE, LIQUID CRYSTAL DISPLAY, AND METHOD OF MANUFACTURING PROTECTIVE FILM FOR POLARIZING PLATE

POLARIZING PLATE, LIQUID CRYSTAL DISPLAY, AND METHOD OF MANUFACTURING PROTECTIVE FILM FOR POLARIZING PLATE

Provided is a polarizing plate which is free from occurrence of cloudy unevenness appearing blurry on a screen of a liquid crystal display under heat and humidity conditions. The polarizing plate of the invention is characterized in that it comprises a first protective film, a second protective film...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: YAMADA RUMIKO
Format: Patent
Sprache:eng
Schlagworte:
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
FREQUENCY-CHANGING
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICAL LOGIC ELEMENTS
OPTICS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:Provided is a polarizing plate which is free from occurrence of cloudy unevenness appearing blurry on a screen of a liquid crystal display under heat and humidity conditions. The polarizing plate of the invention is characterized in that it comprises a first protective film, a second protective film and a polarizer sandwiched between the first and second protective films, wherein the first protective film is a laminated film composed of a cellulose ester resin layer (A) and an acryl resin layer (B), the cellulose ester resin layer (A) being a layer containing from 55 to 99% by mass of a cellulose ester resin and from 1 to 45% by mass of an acryl resin, provided that the total content of the cellulose ester resin and the acryl resin in the cellulose ester resin layer (A) is 100% by mass, and the acryl resin layer (B) being a layer containing from 1 to 45% by mass of a cellulose ester resin and from 55 to 99% by mass of an acryl resin, and wherein the second protective film contains a cellulose ester resin and a retardation adjusting agent, the cellulose ester resin layer (A) facing the polarizer.