Abstract: In a method of manufacturing a single-layer cholesteric liquid crystal display device, a liquid crystal composition of a cholesteric phase is formed between a first substrate and a second substrate. A plurality of liquid crystal layers are formed by sequentially adjusting the temperature of the cholesteric phase liquid crystal composition and performing a plurality of optical curing processes on the cholesteric phase liquid crystal composition. Each of the plurality of liquid crystal layers corresponds to one of the plurality of subpixels.

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 polymer-dispersed liquid crystal (PDLC) display device includes a first substrate having a reflective layer on a surface thereof and a second substrate facing the first substrate. A first electrode and a second electrode may be formed on inner surfaces of the first and second substrates, and a PDLC layer may be between the first substrate and the second substrate. The PDLC layer may include a first liquid crystal layer region including dispersed polymers and liquid crystals, and a second liquid crystal layer region between the first liquid crystal layer region and the second substrate, the second liquid crystal layer region not including polymers.

Abstract: Provided are display devices using electrochromism and PDLC and methods of driving the display devices. A display device may include a plurality of first electrodes and a plurality of second electrodes; a polymer dispersed liquid crystal (PDLC) layer between the first electrodes and the second electrodes; a plurality of third electrodes and a plurality of fourth electrodes; a plurality of electrochromic layers between the third electrodes and the fourth electrodes; and an electrolyte layer between the third electrodes and the fourth electrodes.

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: A transistor includes: a semiconductor substrate; a channel region arranged on the semiconductor substrate; a source and a drain respectively arranged on either side of the channel region; and a conductive nano tube gate arranged on the semiconductor substrate to transverse the channel region between the source and the drain. Its method of manufacture includes: arranging a conductive nano tube on a surface of a semiconductor substrate; defining source and drain regions having predetermined sizes and traversing the nano tube; forming a metal layer on the source and drain regions; removing a portion of the metal layer formed on the nano tube to respectively form source and drain electrodes separated from the metal layer on either side of the nano tube; and doping a channel region below the nano tube arranged between the source and drain electrodes by ion-implanting.

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 color filter and display devices using the same are provided, the color filter includes a first electrode and a second electrode spaced apart from each other; and a variable filter layer between the first electrode and the second electrode. The variable filter layer includes a polymer, liquid crystal dispersed in the polymer, and a plurality of color display materials mixed in the liquid crystal.

Abstract: In a transistor and a method of manufacturing the same, the transistor includes a channel layer arranged on a substrate, a source electrode and a drain electrode formed on the substrate so as to contact respective ends of the channel layer, a gate insulating layer surrounding the channel layer between the source electrode and the drain electrode, and a gate electrode surrounding the gate insulating layer.

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: 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: An electrophoretic display device with high reliability, high reflectance and improved color characteristics. The electrophorectic display device includes unit cells, each of which includes transmissive particles and a reflective panel. The unit cells are vertically laminated or arranged in parallel. In addition, the electrophorectic display device exhibits excellent visibility and has a simple structure.

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: 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: Reflective-type color display devices using polymer dispersed liquid crystals (PDLCs) and dyes are provided, the display devices including a pixel unit having PDLC layers that are disposed between first electrodes and second electrodes. The PDLC layers have different color dyes. The first electrodes are disposed on a first substrate and the second electrodes are disposed on a second substrate, wherein the first and second substrates are apart from each other. The pixel unit includes different color sub pixels.

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 color pixel structure of a color display system based on electrochromism. The color pixel structure includes two one-cell two-color type unit cells laminated. Each of the unit cells includes an upper panel, a lower panel and electrochromic materials of different colors applied to both the upper and lower panels. The color pixel structure exhibits improved color characteristics and have a simple structure. The color pixel structure can be applied to a variety of electrochromic displays due to their excellent visibility and simple structure.

Abstract: Provided are display devices using electrochromism and PDLC and methods of driving the display devices. A display device may include a plurality of first electrodes and a plurality of second electrodes; a polymer dispersed liquid crystal (PDLC) layer between the first electrodes and the second electrodes; a plurality of third electrodes and a plurality of fourth electrodes; a plurality of electrochromic layers between the third electrodes and the fourth electrodes; and an electrolyte layer between the third electrodes and the fourth electrodes.

Abstract: A display apparatus includes an active transflective device and a device panel. The active transflective device is configured to electrically control light transmissivity and light reflectivity. The display panel is configured to form an image by modulating at least one of light reflected and light transmitted by the active transflective device.

Abstract: Disclosed are an electrochromic device and a method for fabricating the same. The electrochromic device comprises a transparent electrode, on which an electrochromic layer is formed, a counter electrode on which a reflective layer is formed, and an electrolyte layer interposed between the transparent electrode and the counter electrode. Since the electrolyte layer is formed in only an active region of unit pixels, neither crosstalk nor image diffusion occurs and only the selected region of unit pixels is operated. Thus, the electrochromic device can realize passive matrix displays capable of representing a desired color. Furthermore, the electrochromic device can be utilized in a variety of applications including flexible displays and electrical papers.