OPTICAL FILM, METHOD FOR THE PRODUCTION THEREOF, POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE

• Main Author: HOSOYA YUICHI
• Format: Patent
• Language: English; Japanese
• Published: 27.10.2016
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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 ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a thin optical film that can be excellently bonded to a polarizer with either water paste or active ray curable adhesive, and has a high optical compensation function, a method of producing the same, and a polarizing plate and a liquid crystal display device each of which comprises the optical film and therefore has a high contrast.SOLUTION: An optical film has a cycloolefin resin, and an oligomer of an aromatic vinyl compound with a weight average molecular weight of 1000-25000.SELECTED DRAWING: None 【課題】本発明の課題は、水糊と活性線硬化型接着剤との両方で偏光子との接着性に優れ、かつ光学補償機能の高い薄膜の光学フィルム、その製造方法を提供することであり、さらに当該光学フィルムを具備することで、コントラストの高い偏光板及び液晶表示装置を提供することである。【解決手段】本発明の光学フィルムは、シクロオレフィン系樹脂と、重量平均分子量が１０００〜２５０００の範囲内である芳香族ビニル化合物のオリゴマーとを含有することを特徴とする。【選択図】なし