Abstract: The color filter may include a pixel unit having a plurality of sub-pixels of different colors, wherein the plurality of sub-pixels respectively include flat plate metal layers and a plurality of color PDLC layers on the flat plate metal layers, and the plurality of color PDLC layers each include a polymer, a plurality of liquid crystal drops dispersed in the polymer, and a plurality of color display materials mixed in the liquid crystal drops.

Abstract: A polymer dispersed display apparatus includes a polymer layer, and a plurality of liquid crystal drops dispersed in the polymer layer. Quantum dots emitting a plurality of colors of light are mixed in the liquid crystal drops. Therefore, the polymer dispersed display apparatus displays colors without the need for a color filter. Thus, the polymer dispersed display apparatus need not include a polarization plate and a color filter, so that a light usage efficiency of the polymer dispersed display apparatus increases.

Abstract: A display device may include a first substrate, a second substrate, reflective plates and a transparent electrode. The first substrate and the second substrate may be facing each other. The reflective plates may be on a surface of the first substrate facing the second substrate. The transparent electrode may be disposed on a surface of the second substrate facing the first substrate. Color filters and a polymer-dispersed liquid crystal (PDLC) layer may further be included in the display device. The color filters may be on the reflective plates, and the PDLC may be between the first substrate and the second substrate. The PDLC layer may include a polymer and liquid crystals dispersed in the polymer.

Abstract: Provided are a polymer-dispersed liquid crystal (PDLC) display device and a method of manufacturing the same. The PDLC display device may include a PDLC layer between facing substrates, wherein the PDLC layer has at least two regions including polymers having different concentrations.

Abstract: A reflective polymer dispersed liquid crystal (PDLC) display device may include a plurality of first and second electrodes on the first and second substrates, the first and second substrates separate from each other, a polymer dispersed liquid crystal (PDLC) layer between the plurality of first and second electrodes, the PDLC layer including polymer, liquid crystal, and a chain transfer reagent, and a specular reflection plate on the first substrate.

Abstract: In a method of forming a polymer-dispersed liquid crystal (PDLC) film, the presence of dichroic dye in a polymer may be prevented or reduced by diffusing dichroic dye into a PDLC layer, and a PDLC display device having improved visibility may be formed.

Abstract: According to example embodiments, a reflective display device includes a plurality of pixel units. Each of the plurality of pixel units may include a reflective plate having at least one concave reflective surface, a first electrode on the reflective plate, a second electrode separate from the first electrode, at least one light-absorbing member corresponding to the at least one concave reflective surface, and a polymer dispersed liquid crystal PDLC layer between the first electrode and the second electrode. The PDLC layer includes a polymer and liquid crystals. The light-absorbing member may be at a focus position of the at least one concave reflective surface.

Abstract: Example embodiments are directed to a reflective color display device including a first substrate and a second substrate spaced apart from each other; a plurality of first and second electrodes respectively on the first and second substrates; a polymer dispersed liquid crystal (PDLC) layer between the first and second electrodes and including a polymer and liquid crystals in the polymer; and a CMY color filter on the second substrate.

Abstract: Example embodiment are directed to a reflective display device including a polymer-dispersed liquid crystal (PDLC) layer between a first substrate and a second substrate, and a mirror reflection plate on the first substrate.

Abstract: A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through 1C: wherein the photorefractive composite exhibits photoconductivity and optical nonlinearity.

Abstract: A cholesteric liquid crystal display device includes: a plurality of pixel units arranged two-dimensionally between two transparent substrates. Each of the plurality of pixel units includes a cholesteric liquid crystal layer having a single-layer structure. The cholesteric liquid crystal layer includes: a liquid crystal molecule; a chiral dopant; and an optically polymerizable polymer. The chiral dopant is mixed with the liquid crystal molecule to form a cholesteric phase and has a solubility that varies with respect to the liquid crystal molecule according to temperature. The optically polymerizable polymer is cured to fix a helix pitch of the cholesteric phase.

Abstract: A holography device may include a light reaction layer configured to react with light to form and remove a diffraction grating, and a metal thin film on the light reaction layer. When first light is incident on the metal thin film while the grating is formed in the light reaction layer, surface plasmon formed on the metal thin film may be diffracted so as to output a holography image. A method of processing a holography image may include recording the image on a holography device by irradiating first light to a light reaction layer to form a diffraction grating, outputting the image by irradiating second light to a metal thin film on the light reaction layer to diffract surface plasmon formed on the metal thin film, and deleting the image from the holography device by irradiating third light to the light reaction layer to remove the grating.

Abstract: A spatial light modulator may include a refraction layer including first and second regions with refractive indices different from each other; and/or a metal thin film on a lower face of the refraction layer configured to generate surface plasmons due to light incident on the metal thin film via the refraction layer. When first light is incident on the refraction layer, a phase difference between light reflected by the first and second regions may occur. A spatial light modulator may include a metal thin film and a refraction layer on the metal thin film. The refraction layer may include a first region with a first refractive index and a second region with a second refractive index different from the first refractive index. When first light is incident on the refraction layer, there may be a phase difference between light reflected from the first and second regions.

Abstract: Example embodiments relate to a method of manufacturing a polymer dispersed liquid crystal (PDLC) display device including dichroic dye. The method may include filling a mixture solution including liquid crystals, a photopolymerizable material, dichroic dyes, and liquid crystalline polymers in a space between a first electrode and a second electrode that face each other; applying an electric field between the first electrode and the second electrode; and arranging the dichroic dyes in the mixture solution.

Abstract: According to example embodiments, a reflective display device includes a plurality of pixel units. Each of the plurality of pixel units may include a reflective plate having at least one concave reflective surface, a first electrode on the reflective plate, a second electrode separate from the first electrode, at least one light-absorbing member corresponding to the at least one concave reflective surface, and a polymer dispersed liquid crystal PDLC layer between the first electrode and the second electrode. The PDLC layer includes a polymer and liquid crystals. The light-absorbing member may be at a focus position of the at least one concave reflective surface.

Abstract: Example embodiments relate to a solar cell configured to scatter incident light to be penetrated so as to increase a light progress path and includes a polymer-dispersed liquid crystal (PDLC) layer on at least one of a first and a second electrodes.

Abstract: Example embodiments relate to a method of forming a polymer dispersed liquid crystal (PDLC) layer including a dichroic dye. A first PDLC layer including the dichroic dye and a second PDLC layer having no dichroic dye may be bonded to each other so as to form the desired PDLC layer.

Abstract: A reflective polymer dispersed liquid crystal (PDLC) display device may include a plurality of first and second electrodes on the first and second substrates, the first and second substrates separate from each other, a polymer dispersed liquid crystal (PDLC) layer between the plurality of first and second electrodes, the PDLC layer including polymer, liquid crystal, and a chain transfer reagent, and a specular reflection plate on the first substrate.

Abstract: A display device may include a first substrate, a second substrate, reflective plates and a transparent electrode. The first substrate and the second substrate may be facing each other. The reflective plates may be on a surface of the first substrate facing the second substrate. The transparent electrode may be disposed on a surface of the second substrate facing the first substrate. Color filters and a polymer-dispersed liquid crystal (PDLC) layer may further be included in the display device. The color filters may be on the reflective plates, and the PDLC may be between the first substrate and the second substrate. The PDLC layer may include a polymer and liquid crystals dispersed in the polymer.

Abstract: In a method of forming a polymer-dispersed liquid crystal (PDLC) film, the presence of dichroic dye in a polymer may be prevented or reduced by diffusing dichroic dye into a PDLC layer, and a PDLC display device having improved visibility may be formed.