점착제층 부착 광학 필름 및 상기 점착제층 부착 광학 필름을 구비하는 화상 표시 장치

• Main Authors: FUJINO RYOTA, TOMOHISA HIROSHI
• Format: Patent
• Language: Korean
• Published: 04.08.2023
• 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

본 발명은, 박형이고, 탈색이 억제된 광학 필름을 제공한다. 본 발명의 점착제층 부착 광학 필름은, 편광자와 해당 편광자의 적어도 편측에 배치된 보호층을 포함하는 편광판과, 위상차층과, 점착제층을 시인 측으로부터 이 순서대로 구비하고, 해당 위상차층의 투습도가 300g/㎡·24h 이상이며, 단면시에서 해당 점착제층의 단부가 해당 편광자의 단부보다도 안쪽에 위치하고 있고, 해당 점착제층의 단부와 해당 편광자의 단부와의 수평 거리가 0㎛∼50㎛이다. The present invention provides an optical film which is of a thin type and in which decoloring is inhibited. An optical film with an adhesive layer according to the present invention comprises: a polarization plate including a polarizer and a protective layer that is disposed at least on one side of the polarizer; a phase difference layer; and an adhesive layer in the stated order from a visual recognition side. The water-vapor permeability of the phase difference layer is 300 g/m2 · 24h or more. An end part of the adhesive layer is positioned further inward than an end part of the polarizer in a cross-sectional view. The horizontal distance between the end part of the adhesive layer and the end part of the polarizer is 0-50 μm.