A color filter, a method for manufacturing a color filter, a color filter substrate, and a display device are disclosed. The color filter includes a first quantum dot light emitting layer and a first reflective layer. The first quantum dot light emitting layer has a light incident surface; and the first reflective layer is on a side of the first quantum dot light emitting layer away from the light incident surface, the first quantum dot light emitting layer includes a plurality of first quantum dots, the first quantum dots are configured to be stimulated by light of a first wavelength from the light incident surface to emit light of a second wavelength, and the first reflective layer is configured to transmit the light of the second wavelength and reflect the light of the first wavelength.

A color filter array may include a plurality of color filters arranged two-dimensionally and configured to allow light of different wavelengths to pass therethrough. Each of the plurality of color filters includes at least one Mie resonance particle and a transparent dielectric surrounding the at least one Mie resonance particle.

This optical filter 10 has an L* of at least 20 as measured by the SCE method, wherein the linear transmittance is at least 60% with respect to light the wavelength of which falls at least partially within the wavelength range of 760 nm-2,000 nm, and the temperature, at which the optical filter contracts by being heated, is at least 85° C.

Disclosed is an optical filter with L* measured by the SCE method being 20 or greater, wherein: the linear transmittance with respect to light with wavelengths being at least a portion of a wavelength range from 760 nm to 2000 nm is 60% or greater; and, before and after a light resistance test wherein light of a xenon arc lamp (average integrated illuminance of light with wavelengths from 300 nm to 400 nm:120 W/m.sup.2) is shone for 300 hours, the absolute value of a change in C* measured by the SCE method using a spectroscopic colorimeter is 6 or less.

To provide a quantum dot-containing resin sheet or film, a method for producing the same, and a wavelength conversion member that can, in particular, solve the problem of aggregation of the quantum dots and the problem with the use of a scattering agent, suppress a decrease in light conversion efficiency, and improve the light conversion efficiency of a resin molded product containing quantum dots. The quantum dot-containing resin sheet or film of the present invention includes a stack of a plurality of resin layers, at least one of the resin layers containing quantum dots, and the plurality of resin layers is integrally molded through co-extrusion.

A method is provided that integrates an autonomous energy harvesting capacity in a mobile device in an aesthetically neutral manner. A unique set of structural features combine to implement a hidden energy harvesting system on a surface of the mobile device body structure or casing to provide electrical power to the mobile device, and/or to individually electrically-powered components in the mobile device. Color-matched, image-matched and/or texture-matched optical layers are formed over energy harvesting components, including photovoltaic energy collecting components. Optical layers are tuned to scatter selectable wavelengths of electromagnetic energy back in an incident direction while allowing remaining wavelengths of electromagnetic energy to pass through the layers to the energy collecting components below. The layers appear opaque when observed from a light incident side, while allowing at least 50%, and as much as 80+%, of the energy impinging on the energy or incident side to pass through the layer.

The invention provides a light-emitting composite film layer, a backlight module, and a display device. The light-emitting composite film layer includes a quantum dot film layer and a diffusion film layer. The diffusion film layer is disposed on at least one surface of the quantum dot film layer. Quantum dots and light diffusion particles are dispersed in the quantum dot film layer. The quantum dots include green light and red light quantum dots, and light diffusion particles are dispersed in the diffusion film layer. The invention makes blue light divergent, makes the blue light reach same brightness viewing angles as red light and green light, and reduces or even eliminates color cast.

This invention relates to an optical film comprising a light control film, and a laminate comprising a light transmitting substrate and a hard coating layer, wherein the laminate satisfies a difference between the total haze and the internal haze, and transmission diffusion distribution, within specific ranges, and a micro-LED display comprising the same.

An optical film, a method for manufacturing the same, and a backlight module are provided. The optical film is formed by a cadmium-free quantum dot gel layer, which includes a first polymer and a plurality of cadmium-free quantum dots dispersed therein. The first polymer includes: 1 wt % to 5 wt % of a photoinitiator; 3 wt % to 30 wt % of scattering particles; 10 wt % to 40 wt % of a thiol compound; 5 wt % to 30 wt % of a monofunctional acrylic monomer; 5 wt % to 20 wt % of a bifunctional acrylic monomer; 10 wt % to 40 wt % of a multifunctional acrylic monomer; 5 wt % to 20 wt % of an organosilicon grafted oligomer; and 100 ppm to 2,000 ppm of an inhibitor. The thiol compound includes a primary mercaptan and a secondary mercaptan, and a weight ratio of the primary mercaptan to the secondary mercaptan ranges from 1:3 to 3:1.

An electromagnetic wave absorbing particle dispersion includes electromagnetic wave absorbing particles containing cesium tungsten oxide represented by a general formula Cs.sub.xW.sub.1-yO.sub.3-z and having a crystal structure of an orthorhombic crystal structure or a hexagonal crystal structure, x, y, and z being 0.2≤x≤0.4, 0<y≤0.4, and 0<z≤0.46; and a solid medium. The electromagnetic wave absorbing particles are dispersed in the solid medium.