ELLIPTICALLY POLARIZING PLATE

• Main Authors: KASAI TATSUAKI, HATANAKA NOBUYUKI
• Format: Patent
• Language: English; Korean
• Published: 11.01.2024
• Subjects: 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; ELECTRICITY; FREQUENCY-CHANGING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING

절단해도 절단 단면에서 물결침 등의 문제가 발생하는 일 없이, 우수한 가공 특성을 갖는 타원 편광판을 제공한다. 편광층, λ/4 위상차층, 수직 배향 액정 경화층, 및 보강층을 갖는 타원 편광판으로서, 수직 배향 액정 경화층은 그 액정 경화층 평면에 대해 수직 방향으로 배향한 상태의 중합성 액정 화합물을 포함하는 중합성 액정 조성물의 중합체로 이루어지고, 수직 배향 액정 경화층의 막두께는 3 ㎛ 이하이며, 수직 배향 액정 경화층과 보강층의 층간 거리는 5 ㎛ 이하인, 타원 편광판. Provided is an elliptically polarizing plate which has excellent machining properties and is free from the occurrence of defects such as waving at a cut end surface even if the elliptically polarizing plate is cut. An elliptically polarizing plate which comprises a polarizing layer, a λ/4 retardation layer, a vertically aligned liquid crystal cured layer and a reinforcement layer, and which is configured such that: the vertically aligned liquid crystal cured layer is formed of a polymer of a polymerizable liquid crystal composition that contains a polymerizable liquid crystal compound which is in a vertically aligned state with respect to the plane of the liquid crystal cured layer; the vertically aligned liquid crystal cured layer has a film thickness of 3 μm or less; and the interlayer distance between the vertically aligned liquid crystal cured layer and the reinforcement layer is 5 μm or less.