Patent application number | Description | Published |
20080254584 | METHOD OF MANUFACTURING FLASH MEMORY DEVICE - A method for manufacturing a flash memory device including providing a semiconductor substrate having a cell region and a periphery region; and then adjusting a threshold voltage of the cell region; and then forming a memory device on the cell region and forming a transistor on the periphery region; and then forming an interlayer dielectric layer on the memory device and the transistor, wherein the height of a first portion of the interlayer dielectric layer at the cell region is greater the height of a second portion of the interlayer dielectric layer at the periphery region; and then removing the height difference between the first portion of the interlayer dielectric layer and the second portion of the interlayer dielectric layer. | 10-16-2008 |
20080296539 | METHOD OF MODIFYING CARBON NANOTUBE USING RADICAL INITIATOR, AND DISPERSION LIQUID AND ELECTRODE COMPRISING THE CARBON NANOTUBE MODIFIED BY USING THE METHOD - Provided is a method of modifying carbon nanotubes, the method including: preparing a mixed solution in which a radical initiator and a carbon nanotube are dispersed; applying energy to the mixed solution to decompose the radical initiator into a radical; and reacting the decomposed radical with a surface of the carbon nanotube, wherein the radical which has reacted with the carbon nanotube is detached from the carbon nanotube after the reaction with the carbon nanotube. In the method of modifying carbon nanotube, a radical is reacted with a carbon nanotube and then separated from the carbon nanotube to thus modify the surface of the carbon nanotube without chemical bonding. Accordingly, the conductivity of the carbon nanotube can be increased. | 12-04-2008 |
20090020732 | METHOD OF SELECTIVELY SEPARATING CARBON NANOTUBES, ELECTRODE COMPRISING METALLIC CARBON NANOTUBES SEPARATED BY THE METHOD AND OLIGOMER DISPERSANT FOR SELECTIVELY SEPARATING CARBON NANOTUBES - Provided is method of selectively separating carbon nanotubes into metallic carbon nanotubes and semiconducting carbon nanotubes, the method including: preparing a mixture including a dispersant, carbon nanotubes, and a solvent; dispersing the carbon nanotubes in the mixture; and separating the semiconducting carbon nanotubes from the mixture in which the carbon nanotubes are dispersed, wherein the dispersant is an oligomer including about 2 to about 24 repeat units, each including a head moiety and a tail moiety, wherein the head moiety comprises 1 to about 5 aromatic hetero rings, and the tail moiety comprises a hydrocarbon chain or chains connected to the head moiety. | 01-22-2009 |
20090027329 | SURFACE PLASMON DISPLAY DEVICE AND METHOD THEREOF - A surface plasmon display device includes metal particles having a constant size within all of the pixel regions between a first electrode and a second electrode and a dielectric layer corresponding to each of the pixel regions formed on an inner surface of a first substrate, wherein the dielectric layer in each of the pixel regions has physical properties for causing the surface plasmon resonance corresponding to a wavelength designated to the corresponding pixel region. | 01-29-2009 |
20090027761 | SHELL-TYPE ELECTROPHORETIC PARTICLE, DISPLAY DEVICE INCLUDING THE PARTICLE, AND METHOD THEREOF - An electrophoretic particle includes ionic liquid stored in a spherical polymer shell and a charged layer formed on an inner surface of the shell, and a display device includes the electrophoretic particle. The shell is not charged, and the charged layer in the shell is charged. Therefore, particles having different polarities from each other do not stick to each other. Since the electrophoretic particles are dispersed in air, a high response speed can be achieved, a large amount of charges can be formed by the ionic liquid and the charged layer contacting the ionic liquid, and thus, the particles can move with a low driving voltage. | 01-29-2009 |
20090034056 | ELECTROPHORETIC DISPLAY DEVICE - Provided is an electrophoretic display device. The electrophoretic display device includes a first substrate and a second substrate forming a space receiving electrophoretic particles, and a first electrode and a second electrode formed on the first substrate and the second substrate respectively. The electrophoretic particles include reflective particles having a first electric polarity and reflecting a first light in visible wavelength bands, and light emission particles having a second electric polarity and emitting a second light by an optical stimulation. The first and second lights are in a substantially same color range of wavelength in a same pixel region. | 02-05-2009 |
20090046051 | ELECTRO-DIELECTRO-PHORETIC DISPLAY DEVICE AND METHOD THEREOF - Electrophoretic particles and dielectrophoretic particles are included together in a unit pixel. Each of the electrophoretic particles and the dielectrophoretic particles includes two kinds of particles having different electric properties. The electrophoretic particles include positively charged particles and negatively charged particles. The dielectrophoretic particles include particles having low dielectric constant and particles having high dielectric constant. A first electric field for moving the electrophoretic particles and a second electric field for moving the dielectrophoretic particles are applied to the unit pixel. The second electric field has an asymmetric gradient in the direction where the dielectrophoretic particles move to determine movement directions of the dielectrophoretic particles having different dielectric constants. | 02-19-2009 |
20090071533 | TRANSPARENT ELECTRODE COMPRISING GRAPHENE SHEET, AND DISPLAY AND SOLAR CELL INCLUDING THE ELECTRODE - Provided is a transparent electrode including a graphene sheet. A transparent electrode having high conductivity, low sheet resistance, and low surface roughness can be prepared by employing the graphene sheet. | 03-19-2009 |
20090110627 | GRAPHENE SHEET AND METHOD OF PREPARING THE SAME - An economical method of preparing a large-sized graphene sheet having a desired thickness includes forming a film, the film comprising a graphitizing catalyst; heat-treating a gaseous carbon source in the presence of the graphitizing catalyst to form graphene; and cooling the graphene to form a graphene sheet. A graphene sheet prepared according to the disclosed method is also described. | 04-30-2009 |
20090117837 | CMP PAD AND METHOD FOR MANUFACTURING THE SAME - Embodiments relate to a chemical mechanical polishing (CMP) pad. According to embodiments, a CMP pad may include a pad body having a series of concave and convex patterns and a chemical reactant formed on and/or over the pad body. The CMP pad may uniformly perform a CMP process without using abrasive grains. Accordingly, scratches on a surface of a wafer may be prevented. | 05-07-2009 |
20090155161 | METHOD OF PREPARING GRAPHENE SHELL AND GRAPHENE SHELL PREPARED USING THE METHOD - Provided are a method of preparing a graphene shell and a graphene shell prepared using the method. A first heat treatment is performed on a mixture of an organic solvent and a graphitization catalyst so as to carburize the graphitization catalyst with carbon decomposed from the organic solvent. The graphitization catalyst is in the form of particles. A second heat treatment process is performed on the carburized graphitization catalyst in an inert or reductive gas atmosphere to thereby form graphene shells on surfaces of the carburized graphitization catalyst | 06-18-2009 |
20090155561 | SINGLE CRYSTALLINE GRAPHENE SHEET AND PROCESS OF PREPARING THE SAME - A single-crystal graphene sheet includes a polycyclic aromatic molecule wherein a plurality of carbon atoms are covalently bound to each other, the single-crystal graphene sheet comprising between about 1 layer to about 300 layers; and wherein a peak ratio of a Raman D band intensity to a Raman G band intensity is equal to or less than 0.2. Also described is a method for preparing a single-crystal graphene sheet, the method includes forming a catalyst layer, which includes a single-crystal graphitizing metal catalyst sheet; disposing a carbonaceous material on the catalyst layer; and heat-treating the catalyst layer and the carbonaceous material in at least one of an inert atmosphere and a reducing atmosphere. Also described is a transparent electrode including a single-crystal graphene sheet. | 06-18-2009 |
20100055617 | METHOD OF FORMING PATTERN IN SEMICONDUCTOR DEVICE - Disclosed is a method of forming a pattern in a semiconductor device. A first mask pattern to form dense lines and a second mask pattern to form spaces (parts where ends of lines are opposite to each other) are used when double patterning is applied to a photolithography process to form a line and space pattern on a semiconductor substrate. Therefore, when the line and space pattern is formed, a fine pattern may be formed without generating a bridge at parts where ends of lines are opposite to each other. | 03-04-2010 |
20100206363 | GRAPHENE SHEET COMPRISING AN INTERCALATION COMPOUND AND PROCESS OF PREPARING THE SAME - A graphene sheet including an intercalation compound and 2 to about 300 unit graphene layers, wherein each of the unit graphene layers includes a polycyclic aromatic molecule in which a plurality of carbon atoms in the polycyclic aromatic molecule are covalently bonded to each other; and wherein the intercalation compound is interposed between the unit graphene layers. | 08-19-2010 |
20110081581 | ORGANIC ELECTROLYTIC SOLUTION WITH SURFACTANT AND LITHIUM BATTERY EMPLOYING THE SAME - An organic electrolytic solution and a lithium battery employing the same are provided. The organic electrolytic solution includes a lithium salt, an organic solvent containing a first solvent having a high dielectric constant and a second solvent having a low boiling point, and a surfactant including a hydrophobic portion having an aromatic group. The organic electrolytic solution effectively prevents the electrolytic solution from contacting the anode, thereby suppressing side reactions on the anode surface and improving discharge capacity, charge/discharge efficiency, lifespan, and battery reliability. | 04-07-2011 |
20110244210 | GRAPHENE SHEET AND METHOD OF PREPARING THE SAME - An economical method of preparing a large-sized graphene sheet having a desired thickness includes forming a film, the film comprising a graphitizing catalyst; heat-treating a gaseous carbon source in the presence of the graphitizing catalyst to form graphene; and cooling the graphene to form a graphene sheet. A graphene sheet prepared according to the disclosed method is also described. | 10-06-2011 |
20110293850 | TRANSPARENT CARBON NANOTUBE ELECTRODE WITH NET-LIKE CARBON NANOTUBE FILM AND PREPARATION METHOD THEREOF - Provided is a transparent carbon nanotube (CNT) electrode comprising a net-like (i.e., net-shaped) CNT thin film and a method for preparing the same. More specifically, a transparent CNT electrode comprises a transparent substrate and a net-shaped CNT thin film formed on the transparent substrate, and a method for preparing a transparent CNT electrode, comprising forming a thin film using particulate materials and CNTs, and then removing the particulate materials to form a net-shaped CNT thin film. The transparent CNT electrode exhibits excellent electrical conductivity while maintaining high light transmittance. Therefore, the transparent CNT electrode can be widely used to fabricate a variety of electronic devices, including image sensors, solar cells, liquid crystal displays, organic electroluminescence (EL) displays, and touch screen panels, that have need of electrodes possessing both light transmission properties and conductive properties. | 12-01-2011 |
20120046434 | Nanocomposite for fuel cell, method of preparing the nanocomposite, and fuel cell including the nanocomposite - Provided is a nanocomposite for the catalyst layer of a fuel cell electrode including: a carbon nanofiber; and metal catalyst particles uniformly applied to the surface of the carbon nanofiber, wherein the carbon nanofiber has a surface oxygen content of at least 0.03 calculated by the formula: Oxygen content=[atomic percentage of oxygen/atomic percentage of carbon] using atomic percentages of oxygen and carbon, respectively calculated from an area of an oxygen peak having a binding energy of 524 to 540 eV, an area of a nitrogen peak having a binding energy of 392 to 404 eV, and an area of a carbon peak having a binding energy of 282 to 290 eV in X-ray photoelectron spectroscopy. The nanocomposite has high surface oxygen content and has metal catalyst nano particles densely and uniformly distributed on the outer wall of the carbon fibers, thereby having high electrochemical efficiency. | 02-23-2012 |
20120132862 | CARBON NANOTUBE DISPERSION AND METHOD OF PREPARING TRANSPARENT ELECTRODE USING THE CARBON NANOTUBE DISPERSION - Provided is a carbon nanotube dispersion including: carbon nanotubes, a solvent, and a dispersant, in which a mutifunctional ethylene oxide-propylene oxide block copolymer acts as the dispersant. The carbon nanotube dispersion provides excellent dispersion stability in aqueous and organic systems. Therefore, the carbon nanotube dispersion is suitable for a transparent electrode. | 05-31-2012 |
20120141666 | TRANSPARENT CARBON NANOTUBE ELECTRODE USING CONDUCTIVE DISPERSANT AND PRODUCTION METHOD THEREOF - Disclosed is a transparent carbon nanotube (CNT) electrode using a conductive dispersant. The transparent CNT electrode comprises a transparent substrate and a CNT thin film formed on a surface the transparent substrate wherein the CNT thin film is formed of a CNT composition comprising CNTs and a doped dispersant. Further disclosed is a method for producing the transparent CNT electrode. | 06-07-2012 |
20130187084 | DISPERSED SOLUTION OF CARBON NANOTUBES AND METHOD OF PREPARING THE SAME - Provided are a dispersed solution of carbon nanotubes including carbon nanotubes, an organic solvent, a spacer, and a dispersant. The dispersed solution of the carbon nanotubes includes both the spacer reducing the van der Waals force of the carbon nanotubes and preventing the bundling of the carbon nanotubes and the dispersant maintaining the debundling and stability of the carbon nanotubes, thereby improving the dispersibility of the carbon nanotubes. The preparation method of the dispersed solution of the carbon nanotubes can easily produce a dispersed solution of carbon nanotubes without separately performing a chemical treatment. | 07-25-2013 |
20140188278 | ROBOTIC SHOE - A robotic shoe includes a robot sole, a plurality of optical sensors, a plurality of optical sensors, and projections. The robot sole has an underside capable of contacting the ground when in use. Mounting spaces are longitudinally spaced in the sole. The optical sensors are disposed in respective ones of the mounting spaces. The projections protrude from the underside of the sole, and are capable of contacting the ground at positions corresponding to the mounting spaces. | 07-03-2014 |