A color filter substrate comprises an insulating substrate and a color filter layer including a blue color filter and a green color filter spaced apart from each other on the insulating substrate, wherein the blue color filter includes first metal particles having a first mean diameter, and the green color filter includes second metal particles having a second mean diameter larger than the first mean diameter.

In the display device according to an embodiment, optical functional elements such as a prism sheet and a light diffusion layer are combined, and an optical composite sheet to which a light absorbing layer that selectively absorbs light of a specific wavelength band is inserted is used, so that the color gamut can be enhanced as compared with the prior art.

An optical film is disclosed. The optical film may include a first base film, and a diffusion lens layer disposed on one surface of the first base film and including a plurality of square pyramid-shaped lenses. Edges meeting at vertices of the plurality of square pyramid-shaped lenses may be curved lines. Among the plurality of square pyramid-shaped lenses, one surface of a first square pyramid-shaped lens may meet one surface of a second square pyramid-shaped lens to form a boundary line, and the one surface of the first square pyramid-shaped lens and the one surface of the second square pyramid-shaped lens may be symmetrical with respect to the boundary line as an axis.

Provided is a thermal barrier film having, dispersed in a resin matrix, high-refractive-index particles having a D-line refractive index of 2.5 or more and 3.2 or less. The high-refractive-index particles have an average particle size of 2.0 μm or more and 5.0 μm or less. Provided are a thermal barrier film that reduces a temperature rise due to sunlight by virtue of having a high reflectance even as a thin film, has high film thickness accuracy, and has high abrasion resistance, a thermal barrier paint for forming such thermal barrier film, and an optical instrument including such thermal barrier film.

The present invention provides a barrier film laminate including a first barrier film that includes a first substrate layer and a first barrier layer formed on the first substrate layer, a second barrier film that includes a second substrate layer and a second barrier layer formed on the substrate layer, and an adhesive layer. In the barrier film laminate, the first barrier film is bonded with the second barrier film so that the first barrier layer faces the second barrier layer with the adhesive layer interposed therebetween. In one embodiment of the barrier film laminate, the adhesive layer is formed of an adhesive containing an epoxy resin, a curing agent having an amino group, and either a silane coupling agent having an epoxy group or a silane coupling agent having an amino group and two hydrolyzable functional groups.

A color conversion film having: a substrate film; and a color conversion functional layer including a solid phase change material; and a backlight unit and a display apparatus including the color conversion film.

A composite material for light filtering, comprising: a polymeric matrix material and particles of neodymium compound doped in the polymeric matrix material. A lighting apparatus comprises the composite material, a method for determining a doping concentration of particles of neodymium compound in the composite material, and a method for determining a thickness of the composite material are also described.

A coating composition comprising inorganic oxide fine particles containing at least one element selected from the group consisting of Ti, Zr, Sn and Sb, a hydrolysable group-containing organic silicon compound, and (C1) a surfactant having an HLB value of 8 or less and (C2) a surfactant having an HLB value of more than 8, for forming a coat layer having little white turbidity, a good appearance and excellent scratch resistance, chemical resistance, hot water resistance and weather resistance on the surface of a plastic optical substrate.

A system and method are provided for forming energy filter layers or shutter components, including energy scattering layers that are actively electrically switchable. The energy filters or shutter components are operable between at least a first mode in which the layers, and thus the presentation of the shutter components, appear substantially transparent when viewed from an energy/light incident side, and a second mode in which the layers, and thus the presentation of the energy filters or shutter components, appear opaque to the incident energy impinging on the energy incident side. The differing modes are selectable by electrically energizing, differentially energizing and/or de-energizing electric fields in a vicinity of the energy scattering layers. Refractive indices of transparent particles, and the transparent matrices in which the particles are fixed, are tunable according to the applied electric fields. The energy scattering layers may conceal a sensor such as a camera or photovoltaic cell.

Provided is a semiconductor nanoparticle complex in which two or more kinds of ligands including a ligand I and a ligand II are coordinated to a surface of a semiconductor nanoparticle. The ligands are each an organic ligand including an organic group and a coordinating group. The ligand I is a thiocarboxylic acid represented by the following general formula (1). The mole fraction of the ligand I in the ligands is 0.2 mol % to 35.0 mol %.

General formula (1):

HS—X—(COOH)n  (1)

(In general formula (1), X is a (n+1)-valent hydrocarbon group, and n is a natural number of 1 to 3.) The present disclosure provides a semiconductor nanoparticle complex dispersible at a high mass fraction in a dispersion medium having polarity while a high fluorescence quantum yield (QY) of the semiconductor nanoparticle is retained.