OPTICAL FILM, POLARIZING PLATE, AND LIQUID CRYSTAL DISPLAY DEVICE

• Main Authors: MATSUMOTO, Sayaka, UMEDA, Hiroki, KOIDE, Takuya, TASAKA, Koji, NANJIYOU, Takashi
• Format: Patent
• Language: English; French; Japanese
• Published: 03.02.2022
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; 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; DYES; FREQUENCY-CHANGING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PERFORMING OPERATIONS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

An optical film according to the present invention contains a cycloolefin resin, wherein: the cycloolefin resin contains an ethylenic compound as a copolymer component; the moisture permeability (40°C, 95% RH) of the optical film is in the range of 0.1-60 g/(m2·24 h); one surface of the optical film is a roughened surface; and the one-surface outside haze of the roughened surface is not less than 0.02% but less than 0.10%. Un film optique selon la présente invention contient une résine de cyclooléfine, la résine de cyclooléfine contenant un composé éthylénique en tant que composant copolymère ; la perméabilité à l'humidité (40 °C, 95 % RH) du film optique se situant dans la plage de 0,1 à 60 g/(m2·24 h) ; une surface du film optique étant une surface rugueuse ; et le voile extérieur de surface de la surface rugueuse étant supérieur ou égal à 0,02 % mais inférieur à 0,10 %. 本発明の光学フィルムは、シクロオレフィン系樹脂を含有する光学フィルムであって、前記シクロオレフィン系樹脂が、共重合成分としてエチレン化合物を含有する樹脂であり、前記光学フィルムの透湿度（４０℃、９５％ＲＨ）が、０．１～６０ｇ／（ｍ2・２４ｈ）の範囲内であり、かつ、片面に粗化面を有し、前記粗化面の片面外部ヘイズが、０．０２％以上０．１０％未満である。