OPTICAL FILM, BACK LIGHT UNIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME

PURPOSE: An optical film is provided to have high transmittance, low yellowness and haze without using a heat stabilizer and other additives. CONSTITUTION: An optical film consists of an acrylic copolymer. The acrylic copolymer is obtained by polymerizing 70-99 wt% of methylmethacrylate with a dimet...

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Bibliographic Details
Main Authors JEON, EUN JIN, KIL, MIN HO, SEO, HYO JUNG, LEE, YOUNG SOO
Format Patent
LanguageEnglish
Korean
Published 10.06.2013
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
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
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL LOGIC ELEMENTS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:PURPOSE: An optical film is provided to have high transmittance, low yellowness and haze without using a heat stabilizer and other additives. CONSTITUTION: An optical film consists of an acrylic copolymer. The acrylic copolymer is obtained by polymerizing 70-99 wt% of methylmethacrylate with a dimethylfuran content of 40 ppm or less, and 30-1 wt% of one or more monomers selected from methacrylate or acrylate. The acrylic monomer is manufactured by including a polymerization initiator and a chain transferring agent. The polymerization initiator is peroxide-based compound or azo-based compound. The chain transferring agent is a mercaptane-based compound.
Bibliography:Application Number: KR20110126835