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

• Main Authors: ONO TETSUYA, OTA TAKAAKI, SUGATA HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 20.12.2022
• Subjects: ADVERTISING; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; LABELS OR NAME-PLATES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SEALS; SIGNS

To improve scratch resistance while maintaining anti-glare property.SOLUTION: An optical laminate 10 has: a transparent base material 11; at least one or more hard coat layers 12 which are provided on the transparent base material 11 and are composed of a resin composition; and at least one or more metal oxide layers (adhesive layer 13 and antireflection layer 14) which are provided on the hard coat layers 12 and are composed of a metal oxide, wherein an uneven structure is formed on a surface of the side of the metal oxide layer of the hard coat layers 12, and height distribution of the surface of the uneven structure satisfies the following expression (1). Expression (1): A/1.9<P. A: Height of a highest point of the surface of the uneven structure when a height B of a lowest point of the surface of the uneven structure is 0. P: Mode value of height distribution of the surface of the uneven structure when the height B of the lowest point of the surface of the uneven structure is 0.SELECTED DRAWING: Figure 1 【課題】防眩性を維持しつつ、耐擦傷性を向上する。【解決手段】光学積層体１０は、透明基材１１と、透明基材１１上に設けられ、樹脂組成物からなる少なくとも１層以上のハードコート層１２と、ハードコート層１２上に設けられ、金属酸化物からなる少なくとも１層以上の金属酸化物層（密着層１３、反射防止層１４）と、を備え、ハードコート層１２の金属酸化物層側の表面に凹凸構造が形成されており、凹凸構造の表面の高さ分布は、以下の式（１）を満たす。Ａ／１．９ < Ｐ ・・・（１）Ａ：凹凸構造の表面の最低点の高さＢを０としたときの、凹凸構造の表面の最高点の高さＰ：凹凸構造の表面の最低点の高さＢを０としたときの、凹凸構造の表面の高さ分布の最頻値【選択図】図１