OPTICAL FILM WITH ADHESIVE LAYER

• Main Authors: MATANO HITOSHI, ASAZU YUJI, ARAI TAKAYUKI, TAKEATSU RYU
• Format: Patent
• Language: English; Japanese
• Published: 15.09.2016
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; 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-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PAINTS; PERFORMING OPERATIONS; PHYSICS; POLISHES; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

PROBLEM TO BE SOLVED: To provide an optical film with an adhesive layer, which has excellent durability, hardly causes warpage of a display panel, and hardly generates thermal irregularity, even when a thin optical film is used.SOLUTION: An optical film with an adhesive layer 10A includes an optical film 2A and an adhesive layer 1 laminated on at least one surface of the optical film 2A. The surface of the optical film in contact with the adhesive layer 1 is composed of an acrylic resin. The adhesive layer 1 is made of an adhesive obtained from an adhesive composition comprising: a (meth)acrylate copolymer (A) including, as monomer units constituting the polymer, an alicyclic structure-containing monomer (a1) and an aromatic ring-containing monomer (a2); and a crosslinking agent (B).SELECTED DRAWING: Figure 1 【課題】薄膜化された光学フィルムを使用した場合であっても、耐久性に優れ、ディスプレイパネルが反り難く、かつ熱ムラが生じ難い粘着剤層付き光学フィルムを提供する。【解決手段】光学フィルム２Ａと、光学フィルム２Ａの少なくとも片面に積層された粘着剤層１とを備えた粘着剤層付き光学フィルム１０Ａであって、光学フィルムにおける粘着剤層１と接する面は、アクリル系樹脂から構成され、粘着剤層１は、重合体を構成するモノマー単位として、脂環式構造含有モノマー（ａ１）および芳香環含有モノマー（ａ２）を含有する（メタ）アクリル酸エステル共重合体（Ａ）と、架橋剤（Ｂ）とを含有する粘着性組成物から得られた粘着剤からなる粘着剤層付き光学フィルム１０Ａ。【選択図】図１