ELLIPTICAL POLARIZING PLATE

• Main Authors: KASAI TATSUAKI, HATANAKA NOBUYUKI
• Format: Patent
• Language: English; Korean
• Published: 08.11.2022
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; CRYPTOGRAPHY; 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; 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; FREQUENCY-CHANGING; LABELS OR NAME-PLATES; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SEMICONDUCTOR DEVICES; SIGNS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

(과제) 배향 결함이나 광축 어긋남이 억제된 타원 편광판을 제공한다. (해결 수단) 본 발명의 타원 편광판은, 투명 기재 상에, 배향층 A, 위상차층, 배향층 B, 편광층이 이 순서로 형성되고, 상기 편광층과 상기 위상차층의 광축이 실질적으로 평행 관계가 아니고, 상기 위상차층은, 중합성 액정 화합물의 중합체로 구성되는 막이고, 상기 배향층 B 는, 80 ㎚ ∼ 800 ㎚ 의 두께를 갖는 막이고, 상기 편광층은, 중합성 액정 화합물의 중합체로 구성되는 막 중에 이색성 색소가 배향하고 있다. [Problem] To provide an elliptical polarizing plate in which alignment defects or optical axis deviation is suppressed. [Solution] In this elliptical polarizing plate, an alignment layer A, a phase difference layer, an alignment layer B, and a polarization layer are provided in this order on a transparent substrate, the optical axes of the polarization layer and the phase difference layer are essentially non-parallel, the phase difference layer is a film configured from a polymer of a polymerizable liquid crystal compound, the alignment layer B is a film having a thickness of 80 nm to 800 nm, and the polarization layer is obtained by aligning a dichroic pigment in a film configured from a polymer of a polymerizable liquid crystal compound.