OPTICAL LAMINATE AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: ITO YUTAKA, HATANAKA NOBUYUKI
• Format: Patent
• Language: English; Korean
• Published: 06.02.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; FREQUENCY-CHANGING; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

[과제] 공정수가 저감된 제조 방법에 의해 제조할 수 있는 광학 적층체 및 그 제조 방법을 제공하는 것. [해결수단] 보호 필름 A, 접착제층 A, 편광자, 접착제층 B, 및 보호 필름 B가 이 순서로 적층되고, 배향막 A, 위상차막 A, 및 위상차막 B를 갖고, 상기 편광자는, 폴리비닐알코올계 수지 필름 중에 이색성 색소가 배향한 필름이고, 상기 배향막 A는, 상기 보호 필름 B의 편측에 배치되고, 상기 위상차막 A는, 상기 배향막 A의 상기 보호 필름 B측과는 반대측에 배치되며, 중합성 액정 화합물이 배향한 상태에서 경화한 막이고, 상기 위상차막 B는, 상기 보호 필름 B의 상기 배향막 A측과는 반대측, 또는 상기 위상차막 A의 상기 배향막 A측과는 반대측에, 직접 또는 배향막 B를 통해 배치되며, 중합성 액정 화합물이 배향한 상태에서 경화한 막인, 광학 적층체. An object of the present invention is to provide an optical laminate that can be manufactured by a manufacturing method with a reduced number of steps, and a manufacturing method thereof. The optical laminate having an alignment film A, a retardation film A, and a retardation film B in which a protective film A, an adhesive layer A, a polarizer, an adhesive layer B, and a protective film B are laminated in this order, wherein the polarizer is a film in which a dichroic dye is oriented in a polyvinyl alcohol resin film; the alignment film A is disposed on one side of the protective film; the retardation film A is a film disposed on the opposite side of the alignment film A to the protective film B, and is a film that is cured in a state in which the polymerizable liquid crystal compound is oriented; and the retardation film B is a film which is disposed directly or via the alignment film B on a side opposite of the protective film B to the alignment film side A or on a side opposite to the alignment film A side of the retardation film A and which is cured in a state in which the polymerizable liquid crystal compound is aligned.