An adhesive composition including a first epoxy-based compound, a second epoxy-based compound, an oxetane compound, and a diacrylate-based compound is provided. A polarizing plate includes a polarizer, an adhesive layer provided on at least one surface of the polarizer and formed using the adhesive composition, and a protective film provided on at least one surface of the adhesive layer. An image display device using the polarizing plate is also provided.

A solvent free-type photocurable resin composition for a polarizing plate protective layer includes an acryl-based prepolymer comprising a (meth)acrylate-based monomer as a polymerization unit; and an isocyanate-based crosslinking agent, wherein the acryl-based prepolymer is in a partially polymerized state, and viscosity at 25 C. is greater than or equal to 50 cPs and less than or equal to 300 cPs. A polarizing plate including the solvent free-type photocurable resin composition, and an image display device including the polarizing plate is also provided.

A polarizing film has a transparent protective film provided on at least one side of a polarizer through an adhesive layer. The transparent protective film is a cellulose-based resin film. The adhesive layer is formed by a cured layer obtained by irradiating an active energy ray-curable adhesive composition with active energy rays. The composition contains 0.0% by weight to 4.0% by weight of an active energy ray-curable compound (A) having an SP value of 29.0 (MJ/m.sup.3).sup.1/2 to 32.0 (MJ/m.sup.3).sup.1/2, 5.0% by weight to 98.0% by weight of an active energy ray-curable compound (B) having the SP value of 18.0 (MJ/m.sup.3).sup.1/2 to 21.0 (MJ/m.sup.3).sup.1/2 (exclusive of 21.0 (MJ/m.sup.3).sup.1/2), and 5.0% by weight to 98.0% by weight of an active energy ray-curable compound (C) having the SP value of 21.0 (MJ/m.sup.3).sup.1/2 to 26.0 (MJ/m.sup.3).sup.1/2 on a basis of 100% by weight of a total amount of the composition.

A pressure-sensitive adhesive composition for an optical film, includes a (meth)acryl-based polymer obtained by polymerization of a monomer component including, as a main component, an alkyl (meth)acrylate having an alkyl group of 4 to 18 carbon atoms; and a phosphate ester compound. The pressure-sensitive adhesive composition is capable of forming a pressure-sensitive adhesive layer for optical films. The pressure-sensitive adhesive layer that is for use on optical films and makes it possible to suppress an increase in the surface resistance of a transparent conductive layer even when a laminate including a transparent conductive layer and an optical film such as a polarizing plate with the pressure-sensitive adhesive layer interposed therebetween is stored under hot and humid conditions.

Exemplary embodiments enable a high-luminance and high-contrast image to be displayed so that there are no defects resulting from deforming an image display part, the curable resin composition has a uniform thickness, and air bubbles are prevented in the curable resin composition. A method for producing an image display apparatus including coating a curable resin composition onto a base, arranging the base and the protective part to face each other, and forming a cured resin layer between the base and the protective part, wherein a resin composition has a curing shrinkage ratio of 5% or less, a cured product storage modulus of 110.sup.7 Pa or less at 25 C., and a light transmittance in a visible region of 90% or more, and the curable resin composition coated onto the base or the protective part has a pattern with a prescribed shape.

The present invention provides a liquid crystal display device whose liquid crystal layer is prevented from undergoing a phase transition while the device is on. A liquid crystal display device according to the present invention includes a first substrate having a thin-film transistor element, a heatsink film overlapping the thin-film transistor element, a first alignment film, a liquid crystal layer, and a second substrate in order. The heatsink film contains a liquid-crystalline polymer as the polymerized form of a liquid-crystalline monomer and also contains inorganic fine particles, and the liquid-crystalline polymer is aligned in-plane with respect to the heatsink film. Preferably, the liquid-crystalline monomer is represented by a specified chemical formula.

A laminate of optical elements comprises a transparent first optical element, a second optical element, and a transparent pressure-sensitive adhesive layer for bonding the first optical element to the second optical element. The pressure-sensitive adhesive layer comprises a base adhesive zone, a transparent refractive index-adjusting zone. The base adhesive zone is made essentially of a transparent base pressure-sensitive adhesive material and formed over a given range from a first principal surface of the pressure-sensitive adhesive layer facing the first optical element, in a thickness direction of the pressure-sensitive adhesive layer. The a transparent, adherent, refractive index-adjusting zone is formed over a given range from a second principal surface of the pressure-sensitive adhesive layer facing the second optical element.

An image display device which suppresses destruction of an image display panel due to static electricity carried by a phase difference film, and has excellent adhesiveness between the phase difference film and the image display panel even in a moisture-heat environment, and a circularly polarizing plate with a photosensitive adhesive. The image display device includes a circularly polarizing plate having a linear polarizer and a phase difference film, and an image display panel in this order from a viewing side, in which the phase difference film and the image display panel are bonded by a pressure-sensitive adhesive, the phase difference film has an optically anisotropic layer obtained by polymerizing a polymerizable liquid crystal composition containing at least one kind of polymerizable liquid crystal compound having a predetermined structure, and the pressure-sensitive adhesive contains a polymer having an acid value of 1 to 30 mgKOH/g and an antistatic agent.

Provided is an adhesive composition for optical use, the adhesive composition including: a monofunctional urethane (meth)acrylate-based oligomer; and a polyfunctional urethane (meth)acrylate-based oligomer, in which a weight ratio of the monofunctional urethane (meth)acrylate-based oligomer and the polyfunctional urethane (meth)acrylate-based oligomer is 1:2 to 1:4.

The present disclosure relates to a frame sealant, a preparation method therefor, and a display mother substrate and a display device using the same. The sealant includes: 20-30 parts by weight of a long-chain acrylate emulsion, 4-8 parts by weight of a photoinitiator, 10-20 parts by weight of a methacrylate, and 46-66 parts by weight of fibers.