POLARIZING PLATE, AND ORGANIC ELECTROLUMINESCENCE DISPLAY DEVICE

• Main Authors: FUJINO RYOTA, TOMOHISA HIROSHI
• Format: Patent
• Language: English; Japanese
• Published: 16.05.2023
• Subjects: ADVERTISING; CRYPTOGRAPHY; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LABELS OR NAME-PLATES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SEALS; SIGNS; TRANSPORTING

To provide a polarizing plate which significantly suppresses discoloration when used in organic EL display devices.SOLUTION: A polarizing plate according to an embodiment of the present invention comprises a polarizer having first and second principal surfaces opposing each other, and a laminated film disposed on the first principal surface side of the polarizer, the laminated film comprising a base material and a hard coat layer arranged in order from the polarizer side, and having an intermediate layer provided between the base material and the hard coat layer, the intermediate layer containing components originating from the base material and from the hard coat layer. A ratio of a thickness of the hard coat layer to a thickness of the intermediate layer is 0.65 or less.SELECTED DRAWING: Figure 1 【課題】有機ＥＬ表示装置に用いた場合に脱色が顕著に抑制される偏光板を提供すること。【解決手段】本発明の実施形態による偏光板は、互いに対向する第一主面および第二主面を有する偏光子と、前記偏光子の前記第一主面側に配置され、基材とハードコート層とを前記偏光子側からこの順で含む積層フィルムと、を有し、前記積層フィルムは、前記基材と前記ハードコート層との間に、前記基材に由来する成分および前記ハードコート層に由来する成分を含む中間層を含み、前記中間層の厚みに対する前記ハードコート層の厚みの比は０．６５以下である。【選択図】図１