Abstract:
A method of manufacturing an upper panel of a field emission type backlight unit. The method includes: sequentially forming an anode electrode and a phosphor layer on a substrate; forming a metal reflection film on the phosphor layer; and annealing a surface of the metal reflection film. The method can increase brightness of an image, can prevent occurrence of an electric arc when a high driving voltage is applied to the backlight unit, and allows removal of residues produced when manufacturing the backlight unit.
Abstract:
A memory device that performs writing and reading operations using a mechanical movement of a nanowire, and a method of manufacturing the memory device are provided. The memory device includes a source electrode, a drain electrode, and a gate electrode, each of which is formed on an insulating substrate. A nanowire capacitor is formed on the source electrode. The nanowire capacitor includes a first nanowire vertically grown from the source electrode, a dielectric layer formed on the outer surface of the first nanowire, and a floating electrode formed on the outer surface of the dielectric layer. A second nanowire is vertically grown on the drain electrode. The drain electrode is arranged between the source electrode and the gate electrode. The second nanowire is elastically deformed and contacts the nanowire capacitor when a drain voltage is applied to the drain electrode, and polarity of the drain voltage is opposite to polarity of a source voltage that is applied to the source electrode. Information is stored in the memory device in a form of a charged or non-charged state of the nanowire capacitor. Reading and writing operation of the memory device is performed by the mechanical movement of the second nanowire.
Abstract:
A method of making a catalyst layer for synthesis of carbon nanotubes is provided. The method includes: coating a thin film formed of copolymer on a substrate; heat treating the thin film coated on the substrate to form a regular structure; removing a part of block copolymers that form the copolymer; depositing a catalyst base on the thin film from which a part of the block copolymers are removed; and removing the thin film to form a catalyst layer formed of a plurality of metal catalyst dots.
Abstract:
A method of vertically aligning carbon nanotubes, whereby carbon nanotubes are grown on a substrate on which a catalyst metallic layer is formed, the grown carbon nanotubes are separated from the substrate in a bundle shape, the separated carbon nanotube bundles is put in an electrolyte having a charger, the carbon nanotube bundles are mixed with the charger to charge the carbon nanotube bundles, and the charged carbon nanotube bundles are vertically attached onto a surface of an electrode, using electrophoresis.
Abstract:
A fibril solar cell includes: a fiber-shaped inner core having a porous fiber composed of first carbon nanotubes and a cathode material, in which pores of the porous fiber are filled with second carbon nanotubes, titanium dioxide, a photosensitive dye, and an electron transfer electrolyte; a photoconductive layer formed on a surface of the fiber-shaped inner core and composed of at least one photoconductive polymer; a transparent electrode layer formed on a surface of the photoconductive layer; and a transparent protective layer formed on a surface of the transparent electrode layer and composed of at least one transparent polymer. The fibril solar cell can be mass-produced inexpensively using a polymer. Also, the fibril solar cell has a high efficiency and can be converted into various shapes. The fibril solar cell can be attached to clothing, and be used as a portable power source for mobile electronics.
Abstract:
A yttrium silicate based phosphor with excellent luminescent efficiency at low voltages for utility in field emission devices (FEDs), and a method for synthesizing the phosphor. The yttrium silicate based phosphor contains Eu, Ce or Tb as an activator, phosphorus as a flux, and Zn as a sensitizer, based on a yttrium silicate phosphor, for example, Y3SiO5:Tb phosphor, and thus the luminance is improved.
Abstract:
According to example embodiments, a reflective film includes a plurality of first concave-convex elements having a curved surface and a plurality of second concave-convex elements on the curved surface. The second concave-convex elements may be a smaller scale than a scale of the plurality of first concave-convex elements. The reflective structure may further include a color purity control element configured to reduce degradation of a color purity expressed by the reflective film. The color purity control element may be configured such that at least a complementary light with respect to a color light reflected by the reflective film travels in the same direction as the reflected color light.
Abstract:
An organic semiconductor device includes an organic semiconductor, an electrode electrically connected to the organic semiconductor, and a self-assembled monolayer positioned between the organic semiconductor and the electrode, the self-assembled monolayer including a monomer having an anchor group at one end and an ionic functional group at another end.
Abstract:
A printing apparatus includes a first nozzle substrate having a first tapered nozzle unit aligned with a pressure chamber and a second nozzle substrate having a second tapered nozzle unit aligned with the first tapered nozzle unit and attached to the bottom of the first nozzle substrate.
Abstract:
A method of manufacturing an organic semiconductor thin film includes coating an organic semiconductor solution on a substrate, and shearing the organic semiconductor solution in a direction that results in a shearing stress being applied to the organic semiconductor solution to form the organic semiconductor thin film, wherein a speed of the shearing is controlled such that an intermolecular distance of the organic semiconductor solution is adjusted.