Patent application number | Description | Published |
20080299374 | TRANSPARENT ELECTRODE COMPRISING CARBON NANOTUBE AND METHOD OF PREPARING THE SAME - Disclosed is a method of manufacturing a transparent electrode having a carbon nanotube. The carbon nanotube powder is dispersed in a solvent to form a carbon nanotube ink. The carbon nanotube ink is coated on a substrate to prepare a carbon nanotube film. The carbon nanotube has a defect formed on a surface thereof. The defect is formed through an acid treatment process of immersing the carbon nanotube powder or the carbon nanotube film in a nitric acid, a sulfuric acid, a hydrochloric acid, a phosphoric acid, or a mixture thereof. The defect can be formed through an ultrasonic treatment process of exposing the carbon nanotube powder or the carbon nanotube film to an ultrasonic wave having a predetermined frequency and intensity. | 12-04-2008 |
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 |
20090071539 | SOLAR CELL MANUFACTURED USING AMORPHOUS AND NANOCRYSTALLINE SILICON COMPOSITE THIN FILM, AND PROCESS FOR MANUFACTURING THE SAME - Disclosed are a solar cell manufactured using a composite thin film comprising amorphous silicon and nanocrystalline silicon, a method of manufacturing the solar cell, and a composition for the composite thin film used in manufacturing the solar cell. More particularly, a silicon semiconductor layer in the solar cell is fabricated by using the composite thin film comprising the amorphous silicon and the nanocrystalline silicon, the composite thin film being formed by dispersing nanoparticles of the crystalline silicon in a liquid silicon precursor and modifying them. | 03-19-2009 |
20100319776 | Ink for forming thin film of solar cells and method for preparing the same, CIGS thin film solar cell using the same and manufacturing method thereof - Disclosed are an ink containing nanoparticles for formation of thin film of a solar cell and its preparation method, CIGS thin film solar cell having at least one light absorption layer formed by coating or printing the above ink containing nanoparticles on a rear electrode, and a process for manufacturing the same. More particularly, the above absorption layer comprises Cu, In, Ga and Se elements as constitutional ingredients thereof and such elements exist in the light absorption layer by coating or printing an ink that contains Cu | 12-23-2010 |
20110078567 | APPARATUS AND METHOD FOR PROVIDING VIRTUAL KEYBOARD - An apparatus includes a key providing unit to arrange one key group in a main touch area and to arrange remaining key groups in sub-touch area, a touch screen to display a virtual keyboard and to receive an input, and an input recognizing unit to recognize a user-inputted direction gesture. The key providing unit decreases the size of the key group in the main touch area and moves it to the sub-touch area, enlarges a size of a key group corresponding to the direction of the direction gesture and moved into the main touch area. A method to display the virtual keyboard also includes decreasing the size of the key group in the main touch area and rearranging it into the sub-touch area, enlarging a size of a key group in the sub-touch area receiving a click input, and arranging it into the main touch area. | 03-31-2011 |
20110078614 | TERMINAL AND METHOD FOR PROVIDING VIRTUAL KEYBOARD - A terminal to provide a virtual keyboard includes a touch panel to sense a touch input, a memory unit to store a plurality of virtual keyboards and a touch point number corresponding to each virtual keyboard, a virtual keyboard setting unit to select one of the virtual keyboards corresponding to a touch point number that matches a number of sensed touch inputs, and a display unit to display the selected virtual keyboard. The virtual keyboard setting unit may select one of the virtual keyboards according to a dimension or area of the sensed touch input, and may relocate the virtual keyboard according to coordinates of a touch input. | 03-31-2011 |
20120045745 | REMOTE CLASS SERVICE SYSTEM - Disclosed is a remote class service system, which enables active learning and lecture through bidirectional communication between a student and a lecturer who are remote from each other. | 02-23-2012 |
20120045746 | ELECTRONIC CLASS SYSTEM - Disclosed is an electronic class system which enables a digitalized class, wherein breaking from a conventional class method or an examination method using paper teaching materials for class and a blackboard for writing class contents, the digitalized class uses an electronic pen which is a digitalized writing tool for generating writing data, a computer which communicates with the electronic pen to receive the writing data generated by the electronic pen, and a smart board which serves as a blackboard on which the writing data received by the computer is projected as beams. | 02-23-2012 |
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 |
20120100661 | INK FOR FORMING THIN FILM OF SOLAR CELLS AND METHOD FOR PREPARING THE SAME, CIGS THIN FILM SOLAR CELL USING THE SAME AND MANUFACTURING METHOD THEREOF - Discussed are an ink containing nanoparticles for formation of thin film of a solar cell and its preparation method, CIGS thin film solar cell having at least one light absorption layer formed by coating or printing the above ink containing nanoparticles on a rear electrode, and a process for manufacturing the same. More particularly, the above absorption layer includes Cu, In, Ga and Se elements as constitutional ingredients thereof and such elements exist in the light absorption layer by coating or printing an ink that contains Cu | 04-26-2012 |
20130014355 | WATERPROOF ZIPPER, METHOD AND APPARATUS FOR MANUFACTURING THE SAMEAANM LEE; Young HeeAACI SeoulAACO KRAAGP LEE; Young Hee Seoul KR - A waterproof zipper, a method and an apparatus for manufacturing the same are provided, which can be provided with water resistance, implement diverse shapes and colors through a print layer formed on the zipper, and prevent the print layer from peeling off due to ultraviolet rays or a sliding operation of a slider. The waterproof zipper includes a zipper having one surface to which a plurality of elements are attached so that the elements are engaged with each other in a length direction of the zipper, and a waterproof film made of a transparent polyurethane material and having one surface on which a print layer is formed and which is attached to the other surface of the zipper. | 01-17-2013 |
20130167897 | HETEROGENEOUS LAMINATE INCLUDING GRAPHENE, AND THERMOELECTRIC MATERIAL, THERMOELECTRIC MODULE, AND THERMOELECTRIC APPARATUS INCLUDING THE HETEROGENEOUS LAMINATE - A heterogeneous laminate including: graphene; and a thermoelectric inorganic compound disposed on the graphene. | 07-04-2013 |
20140110670 | DOPED GRAPHENE STRUCTURE COMPRISING HYDROPHOBIC ORGANIC MATERIAL, METHOD FOR PREPARING THE SAME, AND TRANSPARENT ELECTRODE, DISPLAY DEVICE AND SOLAR CELL COMPRISING THE ELECTRODE - A hydrophobic organic layer may be formed on a surface of a graphene doped with a dopant to improve stability of the doped graphene with respect to moisture and temperature. Thus, the transparent electrode having the doped graphene containing the hydrophobic organic layer may be usefully applied in solar cells or display devices. | 04-24-2014 |
20140299840 | GRAPHENE LAMINATE WITH BAND GAP - A graphene laminate includes a first piezoelectric material layer having a negatively-charged surface and a positively-charged surface, a first graphene layer under the first piezoelectric material layer, the first graphene layer contacting the positively-charged surface of the first piezoelectric material layer, a second graphene layer underlying the first graphene layer, and a second piezoelectric material layer under the second graphene layer, the second piezoelectric material layer having a negatively-charged surface and a positively-charged surface, the negatively-charged surface contacting the second graphene layer. | 10-09-2014 |