LAMINATE AND DISPLAY

• Main Authors: MORIMOTO KENSUKE, HATANAKA NOBUYUKI, NADA TAKAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 25.11.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SEMICONDUCTOR DEVICES

To provide a laminate excellent in effect of preventing peeping from an oblique direction, and a display including the same.SOLUTION: A light absorption anisotropic film consists of the cured product of a liquid crystal composition including dichroic dye and a liquid crystal compound. When a position direction optional in a film surface is the x-axis and the orthogonal directions are the y-axis and the z axis, the formula: [Az>(Ax+Ay)/2, Ax(z=60°)/Ax>5 and Ay(z=60°)/Ay>5] are satisfied. A laminate includes a horizontal alignment retardation film i satisfying the formula: [70 nm≤Rei(550)≤170nm]; a polarizer; and a horizontal alignment retardation film ii satisfying the formula: [120 nm≤Reii(550)≤160nm] in this order. [Where, Ax, Ay, Az, Ax (z=60°) and Ay (z=60°) are absorbances in the absorption maximum wavelength of the dichroic dye in the light absorption anisotropic film, and Re (λ) is the in-plane retardation value of the horizontal alignment retardation film in a wavelength λ.]SELECTED DRAWING: Figure 1 【課題】斜め方向からの覗き見防止効果に優れる積層体、および該積層体を含む表示装置の提供。【解決手段】二色性色素および液晶化合物を含有する液晶組成物の硬化物からなる光吸収異方性膜であって、膜面内任意の位置方向をｘ軸、直交方向をｙ軸、ｚ軸とした際に、式：［Ａｚ＞（Ａｘ＋Ａｙ）／２、Ａｘ（ｚ＝６０°）／Ａｘ＞５、Ａｙ（ｚ＝６０°）／Ａｙ＞５］を満たす光吸収異方性膜と、式：［７０ｎｍ≦Ｒｅi（５５０）≦１７０ｎｍ］を満たす水平配向位相差フィルムｉと、偏光子と、式：［１２０ｎｍ≦Ｒｅｉｉ（５５０）≦１６０ｎｍ］を満たす水平配向位相差フィルムｉｉとをこの順に含む積層体。［式中、Ａｘ、Ａｙ、Ａｚ、Ａｘ（ｚ＝６０°）およびＡｙ（ｚ＝６０°）は、光吸収異方性膜中の二色性色素の吸収極大波長における吸光度。Ｒｅ（λ）は、波長λにおける水平配向位相差フィルムの面内位相差値。］【選択図】図１