Polarizing film with pressure-sensitive adhesive layer and image display device

• Main Authors: KAMIGAWARA, TAKERU, KONDO, KEIKO
• Format: Patent
• Language: Chinese; English
• Published: 01.04.2024
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; 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; DYES; FREQUENCY-CHANGING; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; USE OF MATERIALS AS ADHESIVES

One aspect of the present invention relates to providing a polarizing film with a pressure-sensitive adhesive layer that has an appropriate adhesive strength and is less prone to problems such as foaming and peeling due to warping of the polarizing film even in high-temperature environments, and relates to a polarizing film with an agent layer or an image display device. The polarizing film with a pressure-sensitive adhesive layer has a polarizing film in which a first protective layer is provided on one side of a polarizer and a second protective layer is provided on the other side of the polarizer, and a pressure-sensitive adhesive layer in contact with the second protective layer, the ratio of the thicknesses of the first protective layer and the second protective layer (thickness of the second protective layer/thickness of the first protective layer) is 0.1 to 0.7, the pressure-sensitive adhesive layer is a layer formed from a pressure-sensitive adhesive composition containing a (meth)acrylic copolymer, t