LIQUID CRYSTAL CURED FILM, POLARIZING PLATE, AND METHOD FOR MANUFACTURING ORGANIC ELECTROLUMINESCENCE DISPLAY

• Main Authors: HARAGUCHI MANABU, NAKAJIMA SHUMPEI, FUJIWARA NATSUMI
• Format: Patent
• Language: English; Japanese
• Published: 05.03.2020
• 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 method for manufacturing a liquid crystal cured film that can prevent a change in retardation of a liquid crystal cured layer when placed in a high-temperature environment.SOLUTION: A method for manufacturing a liquid crystal cured film includes: a step of forming a layer of a liquid crystal composition containing a polymerizable liquid crystal compound; a step of primarily curing the layer of the liquid crystal composition to obtain a semi-cured layer formed of a primarily cured product of the liquid crystal composition; a step of heating the semi-cured layer to a temperature higher than a glass-transition temperature of the primarily cured product; and a step of secondarily curing the semi-cured layer to obtain a liquid crystal cured layer.SELECTED DRAWING: Figure 1 【課題】高温環境に置かれた場合の液晶硬化層のレターデーションの変化を抑制できる液晶硬化フィルムの製造方法を提供する。【解決手段】重合性液晶化合物を含む液晶組成物の層を形成する工程と、前記液晶組成物の層を一次硬化して、前記液晶組成物の一次硬化物で形成された半硬化層を得る工程と、前記半硬化層を、前記一次硬化物のガラス転移温度より高い温度に加熱する工程と、前記半硬化層を二次硬化して液晶硬化層を得る工程と、を含む、液晶硬化フィルムの製造方法。【選択図】図１