OPTICAL ELEMENT, LAMINATE, DISPLAY DEVICE, AND MANUFACTURING METHOD OF OPTICAL ELEMENT

• Main Authors: FUKUSHIMA YUTA, YOSHIDA SHIMPEI, SHIBATA NAOYA, TAKAHASHI YUTA
• Format: Patent
• Language: English; Japanese
• Published: 08.12.2022
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LABELS OR NAME-PLATES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS

To provide an optical element, in which when a polarizing plate obtained by combining with a polarizer is applied to a display element, well-defined black at visual recognition time from a front direction in a black display is given, a laminate, a display device, and a manufacturing method of the optical element.SOLUTION: An optical element comprises: an optical anisotropy layer; and an optical isotropic member. In the optical element, the optical anisotropy layer and the optical isotropic member contact to each other, an absolute value of a difference between an average refractive index of the optical anisotropy layer and a refractive index of the optical isotropic member is less than or equal to 0.08, and the optical isotropic member has a protrusion part that protrudes to an opposite side of an optical anisotropy layer side.SELECTED DRAWING: None 【課題】 偏光子と組み合わせて得られる偏光板を表示素子に適用した際に、黒表示における正面方向からの視認時の黒しまりが良好である光学素子、積層体、表示装置、および、光学素子の製造方法の提供。【解決手段】 光学異方性層と、光学等方性部材と、を含み、光学異方性層と光学等方性部材とが接しており、光学異方性層の平均屈折率と、光学等方性部材の屈折率との差の絶対値が、０．０８以内であり、光学等方性部材は、光学異方性層側とは反対側に突出する凸部を有する、光学素子。【選択図】なし