Retardation layer-equipped polarizing plate and image display device including retardation layer-equipped polarizing plate

• Main Authors: HAYASHI, DAISUKE, TSUKAMOTO, KATSUKI, FUJIMOTO, NAOKI, SENDA, HIROKI
• Format: Patent
• Language: Chinese; English
• Published: 16.07.2023
• 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; 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

The purpose of the present invention is to provide a retardation layer-equipped polarizing plate having excellent high-temperature durability. A retardation layer-equipped polarizing plate according to an embodiment of the present invention comprises: a polarizing plate including a polarizer with a thickness of 7 [mu]m or more; a first retardation layer being an alignment fixed layer of a liquid crystal compound; and a second retardation layer comprising a resin film including a polymer that exhibits negative birefringence.