ADHESIVE OPTICAL FILM AND IMAGE DISPLAY DEVICE

• Main Authors: FUJITA MASAKUNI, SUGINO SHOKO, SATAKE MASAYUKI, FUJIWARA ARATA
• Format: Patent
• Language: English
• Published: 08.09.2011
• 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; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; 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; PERFORMING OPERATIONS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

PROBLEM TO BE SOLVED: To provide an adhesive optical film in which an adhesive layer is disposed on an optical film and with which initial and long-term reworkability and durability are satisfied. SOLUTION: In the adhesive optical film in which an adhesive layer is disposed on an optical film with an undercoat layer interposed therebetween, the adhesive layer is formed from an adhesive containing, as the base polymer, a block copolymer or a graft copolymer comprising (meth)acrylic polymer (A) segments having a glass transition temperature of 0°C or less and (meth)acrylic polymer (B) segments having a glass transition temperature of 40°C or more, and further the undercoat layer contains polymers. COPYRIGHT: (C)2011,JPO&INPIT