ANTI-GLARE FILM, METHOD FOR PRODUCING SAME, AND USE THEREOF

• Main Authors: SUGAWARA Yoshitaka, ONOMICHI Hiroshi
• Format: Patent
• Language: English; French; Japanese
• Published: 28.11.2019
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; CALCULATING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPUTING; COUNTING; CRYPTOGRAPHY; 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; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC DIGITAL DATA PROCESSING; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING

Provided is an anti-glare film having an anti-glare layer on the surface thereof, wherein the concavo-convex shape of the surface of the anti-glare layer is adjusted to satisfy two or more of properties (1)-(3) below. (1) The arithmetic mean roughness Ra is 0.05-0.25 µm. (2) The average length RSm of profile curve elements is 5-25 µm. (3) The maximum cross-sectional height Rt of the profile curve is 0.1-1 µm. Also, the haze of the anti-glare film is adjusted to 1-60% and the 60° gloss of the surface of the anti-glare layer is adjusted to 0.1-70%. In the anti-glare film, the dynamic friction coefficient on the surface of the anti-glare layer may be 3 or less as measured under the conditions of a load of 0.2 N, a moving speed of 50 mm/sec, and an effective measurement distance of 50 mm using a surface probe having artificial skin attached thereto. This anti-glare film has a surface satisfying both finger slipperiness and scratch resistance. L'invention concerne un film antireflet ayant une couche antireflet sur sa surface, la forme concavo-convexe de la surface de la couche antireflet étant ajustée pour satisfaire deux ou plusieurs des propriétés (1)-(3) ci-dessous. (1) La rugosité moyenne arithmétique Ra est de 0,05 à 0,25 µm. (2) La longueur moyenne RSm des éléments de courbe de profil est de 5 à 25 µm. (3) La hauteur de section transversale maximale Rt de la courbe de profil est de 0,1 à 1 µm. De plus, le trouble du film antireflet est ajusté à 1 à 60 % et le brillant à 60° de la surface de la couche antireflet est ajusté à 0,1 à 70 %. Dans le film antireflet, le coefficient de frottement dynamique sur la surface de la couche antireflet peut être inférieur ou égal à 3 tel que mesuré dans les conditions d'une charge de 0,2 N, une vitesse de déplacement de 50 mm/sec, et une distance de mesure effective de 50 mm à l'aide d'une sonde de surface ayant une peau artificielle fixée à celle-ci. Ce film antireflet a une surface satisfaisant à la fois le glissement des doigts et la résistance aux rayures. 表面に防眩層を有する防眩フィルムにおいて、防眩層表面の凹凸形状を、下記特性（１）～（３）のうち２つ以上の特性を満たす形状に調整する。　（１）算術平均粗さＲａが０．０５～０．２５μｍである　（２）粗さ曲線要素の平均長さＲＳｍが５～２５μｍである　（３）粗さ曲線の最大断面高さＲｔが０．１～１μｍである　さらに、前記防眩フィルムのヘイズを１～６０％に調整し、防眩層表面の６０°グロスを０．１～７０％に調整する。前記防眩フィルムは、人工皮膚を貼り付けた面接触子を用いて、荷重０．２Ｎ、移動速度５０ｍｍ／秒、有効測定距離５０ｍｍの条件で測定した防眩層表面の動摩擦係数が３以下であってもよい。この防眩フィルムは、指での表面滑り性と、耐擦傷性とを同時に充足する。