Abstract:
The present invention relates to an adhesive for a polarizing plate, a polarizing plate comprising adhesive layers formed thereby, and a liquid crystal display comprising the same. More specifically, the present invention relates to an adhesive for a polarizing plate including (meth)acrylic polymer, a hardener, and a silane coupling agent. The (meth)acrylic polymer has 800,000 g/mol or higher of weight-average molecular weight. The adhesive layer formed with the adhesive for the polarizing plate has 8000 to 27000 Pa storage modulus at frequencies of 10^-3 to 10^2 rad/s at -85°C after curing, and has 100 g/m^2·day or less of water vapor transmission rate at 90% of relative humidity at 40°C.
Abstract:
본 발명의 편광판 접착제 조성물은 폴리비닐알코올계 수지; 제1가교제와 제2가교제를 포함하는 가교제; 및 금속산화물을 포함하고, 상기 제1가교제는 글리옥살이며, 상기 제2 가교제는 무기 가교제이고, 상기 제1가교제와 상기 제2 가교제의 중량비는 1: 2~4 : 1인 것을 특징으로 한다. 상기 편광판 접착제 조성물은 접착성이 우수할 뿐만 아니라, 양호한 외관으로 면내의 균일한 접착성을 가지며, 제품 합지부터 건조구간까지의 환경에서 소자의 크랙 발생을 줄일 수 있다.
Abstract:
PURPOSE: A polarizing plate adhesive composite and a polarizing plate using the same are provided to have equal and excellent adhesive force with a good appearance and to reduce a crack of a device in an environment from a product boding section to a dry section. CONSTITUTION: A polarizing plate adhesive composite includes polyvinylalcohol resin, a cross linking agent including a first cross linking agent and a second cross linking agent, and a metal oxide. The second cross linking agent is inorganic, a weight ratio between the first and the second cross linking agents is 1:2-4:1, and the average particle diameter of the metal oxide is 10-100nm. A polarizing plate includes a polarizer (13) and a protective film attached to one or both of sides of the polarizer by using the polarizing plate adhesive composite.
Abstract:
PURPOSE: An adhesive for a polarizing plate is provided to be able to suppress the micro bubble generation even when leaving a polarizing plate finally manufactured at a high temperature for a long period by applying a protective film with a low water vapor transmission. CONSTITUTION: An adhesive for a polarizing plate used in adhesion of a protective film comprises (meth)acrylic copolymer, curing agent and silane coupling agent. The (meth)acrylic copolymer has a weight average molecular weight of 800,000 g/mol or more. An adhesion layer consisting of the adhesive for a polarizing plate has a storage modulus of 27x10^3 Pa or more at a frequency of 10^ (-3) - 10^2 rad/s at 85deg.C after curing. The adhesion layer consisting of the adhesive for a polarizing plate has a water vapor transmission rate (WVTR) of 100 g/m^2·day or less at a relative humidity of 90% and 40deg.C.
Abstract:
PURPOSE: An adhesive composition is provided to improve light-leakage phenomenon by increasing elasticity of an adhesive, and to have excellent durability under high temperatures and high humidity by not using an oligomer shape molecule. CONSTITUTION: An adhesive composition has a storage modulus of 8×10^5 - 1×10^8 dyne/cm^2, and has gel fraction of 83-95% In formula 1: gel fraction(%)=A/B × 100. In formula 1, A is residual weight after solving at room temperature(23°C) for 48 hours, and drying for 24 hours, and B is an initial mass. The adhesive composition comprises (meth)acrylate copolymer and a crosslinking agent. The (meth)acrylate copolymer comprises a (meth)acrylate resin of which glass transition temperature is 200-250 K, and a (meth)acrylate resin of which glass transition temperature is 250-300K.
Abstract:
PURPOSE: An adhesive and an optical member using thereof are provided to reduce in-plane temperature deviation by controlling heat transfer phenomenon from edge type backlight to display panel. CONSTITUTION: An adhesive comprises 100.0 parts by weight of (meta)acrylate based resin and 0.01-10 parts by weight of cross-linking agent. The thermal conductivity is 0.3 W/Mk or less. The cross-linking agent is more than one which is selected from the following: isocyanate based, epoxy based, aziridine based. The adhesive additionally includes silane coupling agent to the amount of 0.01-2 parts by weight. The (meta)acrylate based resin includes 0.005-0.5 mole% of hydroxy group and 0.5-5 mole% of carboxy group.