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

• Main Authors: SUGATA, Hiroshi, OTA, Takaaki, ONO, Tetsuya
• Format: Patent
• Language: English; French; German
• Published: 27.03.2024
• Subjects: ADVERTISING; 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 HEATING; ELECTRIC LIGHTING 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; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SEALS; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

[Problem]To improve abrasion resistance while maintaining an anti-glare property. [Solution] An optical laminate 10 is provided with a transparent substrate 11, at least one or more hard coat layers 12 that are provided on the transparent substrate 11 and are made of a resin composition, and at least one or more metal-oxide layers (adhesion layer 13, antireflection layer 14) that are provided on the hard coat layer 12 and are made of a metal oxide. A concave/convex structure is formed on the metal-oxide layer side surface of the hard coat layer 12, and the height distribution of the surface of the concave/convex structure satisfies the following formula (1). (1): A/1.9 < P where A is the height of the highest point on the surface of the concave/convex structure when the height B of the lowest point on the surface of the concave/convex structure is defined as 0, and P is the mode of the height distribution of the surface of the concave/convex structure when the height B of the lowest point on the surface of the concave/convex structure is defined as 0.