OPTICAL FILM, POLARIZING PLATE, IMAGE DISPLAY DEVICE, AND METHOD FOR MANUFACTURING OPTICAL FILM

• Main Authors: KUREMATSU MASAYUKI, IWAMA SHOTA, TAKAGI TAKAHIRO, TASAKA MASAYUKI, OTA TOMOHISA
• Format: Patent
• Language: English; Japanese
• Published: 13.07.2017
• 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 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 an optical film that is excellent in affinity with an adhesive and folding resistance.SOLUTION: An optical film of the present invention contains at least a cycloolefin resin and a surface adjusting agent, and the surface adjusting agent is an organic silicon compound having a surface tension of 40 mN/m or less. When the content of silicon atoms in the optical film is 100 at%, the content of the silicon atoms in an area from the surface of the optical film to a depth of 10% in the thickness direction of the optical film is 20 at% or more.SELECTED DRAWING: None 【課題】本発明の課題は、接着剤との親和性及び耐折り曲げ性に優れた光学フィルム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、少なくともシクロオレフィン樹脂と、表面調整剤とが含有され、表面調整剤が表面張力４０ｍＮ／ｍ以下の有機ケイ素化合物であり、光学フィルム中のケイ素原子の含有量を１００ａｔ％としたとき、光学フィルム表面から光学フィルムの厚さ方向１０％の深さまでの領域におけるケイ素原子の含有量が２０ａｔ％以上であることを特徴とする。【選択図】なし