Abstract: A composite optical film is provided. The composite optical film sequentially includes a substrate, a light diffusion layer, and a light-gathering layer. The light diffusion layer includes a binder and plural micro beads dispersed therein. The thickness of the light diffusion layer is 2-6 times of the average diameter of the micro beads, and the distance between adjacent micro beads is smaller than the average diameter of the micro beads. The light-gathering layer has plural light-gathering micro structures.

Abstract: The invention provides a coating composition comprising a thermal plastic resin selected from the group consisting of a polycycloolefin resin, polyester resin, polyacrylate resin, and a mixture thereof; and a radiation curable resin comprising a radiation polymer containing at least one mono- or multi-functional acrylic acid based monomer as a polymerization unit, an oligomer containing an ethylenically unsaturated functional group, and a photoinitiator, wherein the radiation curable resin is used in an amount of 220-1000% by weight on the basis of the weight of the thermal plastic resin. The invention improves the hardness of the coating composition, prevent the coated substrate from being scratched or impaired, and impart the substrate with high transparency without causing warping problem.

Abstract: The present invention relates to a negative photosensitive polyimide polymer having a repeating unit of formula (1) as a polymerized unit: wherein G, Q and P* are as defined in the specification. The polyimide polymer of the present invention is developable in an aqueous alkaline solution, and has the properties associated with an insulating layer and photoresist.

Abstract: An optical thin sheet is provided, which comprises a substrate with a light diffusion layer on at least one side of the substrate. The optical thin sheet has an optical property with respect to a haze of no less than 98% and is particularly suitable for use in flat displays.

Abstract: An organic opto-electronic polymer having the structure of formula (I) is provided: The polymer can be used in the light-emitting layer of an organic light-emitting element as a blue light-emitting material.

Abstract: The invention provides a radiation-curable alkoxy silanized hyperbranched polyester acrylate, characterized in that the radiation-curable alkoxy silanized hyperbranched polyester acrylate is produced by using a hyperbranched molecule with at least 16 functionalities as a core; acrylating or methacrylating a portion of the terminal groups of the hyperbranched molecule; and terminating a portion of the end groups of the hyperbranched molecule with an isocyanated silane coupling agent. The acrylate of the invention can be formed into a coating on polar substrates, such as glass or metal, or used as an adhesive.

Abstract: The present invention relates to an optical film composite, which comprises a brightness enhancement element and a light diffusion element, wherein the light diffusion element comprises a substrate with a light diffusion layer on at least one side thereof, wherein the light diffusion element has a haze of no less than 98% as measured according to JIS K7136 standard method.

Abstract: An optical film comprises a transparent substrate including a top surface and a bottom surface; a micro-hemisphere layer disposed on the top surface of the transparent substrate and having a plurality of hemispheric projections, and an unsmooth diffusion layer disposed on the bottom layer of the transparent substrate. The micro-hemisphere layer condenses a light. The unsmooth diffusion surface diffuses a light.

Abstract: The present invention provides a polymerizable composition, comprising, based on the total weight of the polymerizable composition: (a) 1-90 wt % of a monomer of a formula (I): wherein X1 is H or methyl; X2 is H or C1-C2 alkyl; X is O or S; R1 is C1-C12 straight or branched alkylene or alkoxylene; and d and n are each independently an integer of 0 to 3; and (b) 0.1-10 wt % of a photo-initiator. The present invention also provides an optical film comprising a coating formed from the above polymerizable composition. The optical film can be used in backlight units for displays as a brightness enhancement film.

Abstract: The present invention provides an optical element, which comprises: (a) a substrate, (b) a first surface on one side of the substrate wherein said first surface comprises a plurality of prism columnar structures with rounded peaks and the curvature radii of the rounded peaks are in the range from 3 ?m to 20 ?m, and (c) a second surface on the other side of the substrate wherein the second surface can be a plane surface or with concave-convex structures.

Abstract: The present invention relates to an acrylated semi-crystalline hyperbranched polyurethane oligomer and a preparation method thereof, which is characterized in that on the basis of the synthesis of hyperbranched polyurethane oligomer, it adopts a two-step process to make modifications to form a methacrylic and/or acrylic double bond and a long carbon chain with a carbon atom number higher than 10 or a benzene ring or a naphthalene ring at the terminals. The obtained oligomer has a lower melting point and a higher glass transition temperature and can be cured by means of radiation, and the curing rate is high enough to effectively improve production efficiency and save energy to form a cured film having a higher hardness and excellent thermal stability. The raw materials used in the method of the invention are easily obtained, and the method is suitable for large-scale production in industry.

Abstract: The subject invention provides an optical film comprising a transparent substrate and a structured surface layer, wherein the structured layer is positioned on the upper surface of the substrate and comprises a plurality of non-parallel, adjacent columnar structures. The optical film according to the subject invention can effectively enhance the brightness of a liquid crystal display and reduce the optical interference.

Abstract: The invention pertains to an optical film comprising a reflective substrate, characterized in that at least one of the surfaces of the substrate has a scratch-resistant layer which possesses anti-static properties, wherein the scratch-resistant layer has a surface resistivity in the range from 108 to 1012?/?, and a pencil hardness of 3H or more as measured according to JIS K5400 standard method. The optical film of the invention has a low volume shrinkage, does not warp, and possesses excellent anti-static properties and high hardness properties.

Abstract: The subject invention provides a thin and flexible light guide element, which comprises a first optical layer composed of a flexible transparent material; a second optical layer formed on the lower side of the first optical layer and having a light-adjusting structure to change the light path; and a third optical layer formed on the upper side of the first optical layer and having a convex-concave structure to homogenize the light emitted from the first optical layer, wherein the first and second optical layers have different refractive indices.

Abstract: A dye-sensitized solar cell and its preparation method are provided. The dye-sensitized solar cell comprises a first electrode, an electrolyte layer and a second electrode. The electrode layer comprises an electrolyte with non-fluidity and the second electrode comprises a conductive material with a proviso of including no substrate. Also, the electrolyte layer and the second electrode are formed in that order on the first electrode.

Abstract: The invention relates to an electrolyte composition, comprising a polyether polymer, a polyethylene oxide, and a redox pair and optionally nano-particles.

Abstract: A brightness enhancement film comprising a substrate which comprises, on one side, a scratch-resistant layer comprising inorganic microparticles is provided. The brightness enhancement film is useful as a scratch-resistant brightness enhancement film in liquid crystal displays.

Abstract: The subject invention provides an optical film, comprising a transparent substrate and a resin coating having a convex-concave structure on at least one surface of the substrate, wherein said resin coating comprises a plurality of organic particles and a binder, the organic particles being formed from a polyacrylate resin which comprises at least one acrylate monomer type having multiple functional groups as polymerization units, said multi-functional acrylate monomers being in an amount from 30 to 70 wt % based on the total weight of the monomers, and wherein the organic particles have a mean particle size, the particle size distribution of the organic particles ranging within about ±5% of the mean particle size, and wherein the organic particles are in an amount from about 180 to 320 parts by weight per 100 parts by weight of the solid contents of the binder.

Abstract: The present invention pertains to a microencapsulated fire retardant and the uses thereof. The inventive micro-encapsulated fire retardant comprises a core containing a fire retardant and a shell of a natural microtubule, wherein the core is encapsulated by the shell. The microencapsulated fire retardant of the present invention can be composited into a certain polymeric substrate by a mixing method so as to form into a corresponding, fire-retardant polymeric composite material.

Abstract: The invention relates to a dye-sensitized solar cell using composite semiconductor materials, said composite semiconductor materials comprising semiconductor material particles and inorganic particulates coated on the surfaces of the semiconductor material particles, wherein the composite semiconductor materials have a surface area in the range from about 15 to about 80 m2/g. Since the composite semiconductor materials used in the present invention have a large surface area, the solar cell according to the present invention can have an increased adsorption amount of photosensitizers without increasing the thickness of the semiconductor material layer, and exhibits increased efficiency.