Class / Patent application number | Description | Number of patent applications / Date published |
313309000 | DISCHARGE DEVICES HAVING A MULTIPOINTED OR SERRATED EDGE ELECTRODE | 27 |
20080203884 | FIELD EMISSION CATHODE AND METHOD FOR FABRICATING SAME - A field emission cathode includes a substrate, a metal electrode, an aluminum transition layer, and a carbon nanotube array. The metal electrode is disposed upon the substrate. The aluminum transition layer is disposed upon the metal electrode. The carbon nanotube array is disposed upon the aluminum transition layer. | 08-28-2008 |
20080211375 | FIELD EMITTER AND METHOD OF OPERATING THE SAME - A field emitter includes a cathode, a field emission point part, a first anode, a charge storing plate, and a second anode. The field emission point part faces the first anode and is disposed at a first surface of and electrically connected to the cathode. The charge storing plate is disposed at a second surface, opposite the first surface, of the cathode. The second anode faces the second surface of the cathode. The charge storing plate is interposed between the second anode and the second surface of the cathode. Even if substantially the same electric field is formed in the field emitter as in a field emitter without the charge storing plate, the field emitter having the charge storing plate induces a more effective field emission current than the field emitter without the charge storing plate. | 09-04-2008 |
20080238285 | Carbon nanotube field emitter and method for fabricating the same - The present invention relates to a long-life carbon nanotube field emitter with a three-dimensional structure and method for fabricating the same. Since the emitter having an extended area according to the design of the present invention can minimize the current density flowing per single wire of the carbon nanotube, it can be expected that the damage of the carbon nanotube is minimized so that the lifetime of the field emitter can be significantly improved and the commercialization of the carbon nanotube field emitter will be advanced. | 10-02-2008 |
20080290777 | ELECTRON EMITTER STRUCTURE AND ASSOCIATED METHOD OF PRODUCING FIELD EMISSION DISPLAYS - A method of forming an electron emitter structure for use in a field emission display, or as a field emission backlight for an LCD display is provided. The electron emitter structure is formed by depositing mask elements onto an laminar Al substrate, and etching the Al substrate chemically through gaps between the mask elements, such that a spikes are formed on the substrate. These spikes are then covered with an electron emitter material. The spikes can be formed with a desired pitch/height ratio. | 11-27-2008 |
20080297022 | Film Dispersed of Carbon Nanotubes and Light Emitting Body - Disclosed is a film dispersed of carbon nanotubes that emits intensive light with a particular wavelength. | 12-04-2008 |
20090033196 | Electron emission source, electron emission device and method of preparing the electron emission source - Electron emission sources, electron emission devices including the electron emission sources, and methods of making the electron emission sources are provided. The electron emission source includes a carbon-based material, and a degradation prevention material for preventing degradation of the carbon-based material. A binding energy between the degradation prevention material and external oxygen is greater than a binding energy between the carbon-based material and the external oxygen. The electron emission sources have excellent field emission efficiencies and long lifetimes. | 02-05-2009 |
20090115306 | Field emission electron source having carbon nanotubes and method for manufacturing the same - A field emission electron source having carbon nanotubes includes a CNT string and a conductive base. The CNT string has an end portion and a broken end portion, the end portion is contacted with and electrically connected to the surface of the conductive base. The CNTs at the broken end portion form a tooth-shape structure, wherein some CNTs protruding and higher than the adjacent CNTs. Each protruding CNT functions as an electron emitter. Further, a method for manufacturing a field emission electron source is provided. The field emission efficiency of the field emission electron source is high. | 05-07-2009 |
20090134766 | ELECTRON EMISSION SOURCE, ELECTRON EMISSION DEVICE, ELECTRON EMISSION TYPE BACKLIGHT UNIT AND ELECTRON EMISSION DISPLAY DEVICE - An electron emission source electrically coupled to a cathode, the electron emission source including: an insulating material at or near the center of the electron emission source; and an electron emission material around the insulating material. | 05-28-2009 |
20090267479 | METHOD OF MAKING ZINC OXIDE NANOWIRES - Methods for selectively depositing nanostructures on a support layer include contacting the support layer with functionalized catalyst particles. The functionalized catalyst particles can form a self-assembled monolayer of catalyst particles on the support layer and the functionalized catalyst particles can be used to catalyze nanostructure growth. In one embodiment of the disclosed method, zinc oxide nanowires are grown on a patterned substrate using functionalized gold nanoparticles. Patterned arrays of self-assembled nanostructures and nanoscale devices using such nanostructure arrays are also described. | 10-29-2009 |
20090309478 | Emitter and method for manufacturing same - An emitter includes an electrode, and a number of carbon nanotubes fixed on the electrode. The carbon nanotubes each have a first end and a second end. The first end is electrically connected to the substrate and the second end has a needle-shaped tip. Two second ends of carbon nanotubes have a larger distance therebetween than that of the first ends thereof, which is advantageous for a better screening affection. Moreover, the needle-shaped tip of the second ends of the carbon nanotube has a lower size and higher aspect ratio than the conventional carbon nanotube, which, therefore, is attributed to bear a larger emission current. | 12-17-2009 |
20100007263 | Field emission cathode and field emission display employing with same - A field emission display includes a field emission cathode and an anode electrode plate arranged above the field emission cathode. The filed emission cathode includes a substrate, and a plurality of electron-emitting areas spaced apart from each other and arranged on the substrate. Each of the electron-emitting areas includes a cathode, a gate electrode, and a number of first and second conductive lines. The cathode includes a first conductive substrate and a first carbon nanotube assembly having a plurality of carbon nanotubes each having a cathode emitting end having a needle-shaped tip. The gate electrode is faced to the cathode emitting end. The taper-shaped tips of the cathode emitting ends and the gate have a small size and higher aspect ratio, allowing them to bear a larger emission current at a lower voltage. | 01-14-2010 |
20100072875 | SURFACE EMISSION TYPE ELECTRON SOURCE AND DRAWING DEVICE - A surface emission type electron source according to the present invention includes a first electrode having a planar form; a second electrode having a planar form facing the first electrode; an electron passage layer disposed between the first electrode and the second electrode; and a power source part configured to apply a voltage to the second electrode and the first electrode. The electron passage layer includes plural quantum wires extending in a first direction from the first electrode to the second electrode. The quantum wires are spaced apart from each other at predetermined intervals, and electrons are emitted from a front surface of the second electrode. The quantum wires are made of silicon, and each of the quantum wires has plural thin parts having small thicknesses formed at predetermined intervals along the first direction. | 03-25-2010 |
20100096969 | FIELD EMISSION DEVICE AND BACKLIGHT UNIT INCLUDING THE SAME - Afield emission device includes; a substrate, a plurality of cathode electrodes disposed on the substrate, and a plurality of fiber emitters respectively disposed on the plurality of cathode electrodes and each of the plurality of fiber emitters including; at least one conductive fiber and a plurality of carbon nanotubes disposed on surfaces of the at least one conductive fiber. | 04-22-2010 |
20100164355 | FIELD EMISSION DEVICE AND METHOD OF MANUFACTURING THE SAME - A field emission device includes a substrate including a groove; a metal electrode disposed on a bottom surface of the groove; and a carbon nanotube (“CNT”) emitter. The CNT emitter includes an intermetallic compound layer disposed on the metal electrode and CNTs disposed on the intermetallic compound layer. | 07-01-2010 |
20100164356 | FIELD EMISSION DEVICE AND METHOD OF MANUFACTURING THE SAME - A field emission device includes; a substrate including at least one groove, at least one metal electrode disposed respectively in the at least one groove, and carbon nanotube (“CNT”) emitters disposed respectively on the at least one metal electrode, wherein each of the CNT emitters includes a composite of Sn and CNTs. | 07-01-2010 |
20100171407 | FIELD ELECTRON EMITTER, FIELD ELECTRON EMISSION DEVICE INCLUDING THE SAME, AND METHOD OF MANUFACTURING THE FIELD ELECTRON EMITTER - A field electron emitter including a metal electrode; and a plurality of carbon nanotubes, wherein a portion of the plurality of carbon nanotubes protrude from a surface of the metal electrode and a portion of the plurality of carbon nanotubes are in the metal electrode. Also disclosed is a field electron emission device including the field electron emitter and a method of manufacturing the field electron emitter. | 07-08-2010 |
20100283375 | Ozone generator - An ozone generator includes a plurality of needles having a carbon nanotube linear structure. The carbon nanotube linear structure includes at least one carbon nanotube at a free end thereof. The at least one carbon nanotube acts as a discharge end of each needle. | 11-11-2010 |
20110062852 | ELECTRON BEAM APPARATUS AND IMAGE DISPLAY APPARATUS USING THE SAME - The present invention provides an electron beam apparatus provided with an electron-emitting device which has a simple structure, shows high electron-emitting efficiency and stably works. This electron beam apparatus has an insulating member and a gate formed on a substrate, a recess portion formed in the insulating member, a protruding portion that protrudes from an edge of the recess portion toward the gate and is provided on an end part of a cathode opposing to the gate, which is arranged on the side face of the insulating member; and makes an electric field converge on an end part in the width direction of the protruding portion to make an electron emitted therefrom. | 03-17-2011 |
20110181170 | Field emission lamp - A field emission lamp which comprises a vacuum container, and a cathode electrode, a gate electrode and anode electrode all arranged in the vacuum container. The field emission lamp is characterized in that the cathode electrode is composed of a nanocarbon composite substrate which contains a substrate having a projected portion or grooved portion in a surface, and a nanocarbon material formed on the surface of the projected portion or grooved portion of the substrate. | 07-28-2011 |
20110181171 | ELECTRON EMISSION APPARATUS AND METHOD FOR MAKING THE SAME - An electron emission apparatus includes an insulating substrate, one or more grids located on the substrate, wherein the one or more grids includes: a first, second, third and fourth electrode that are located on the periphery of the grid, wherein the first and the second electrode are parallel to each other, and the third and fourth electrodes are parallel to each other; and one or more electron emission units located on the substrate. Each the electron unit includes at least one electron emitter, the electron emitter includes a first end, a second end and a gap; wherein the first end is electrically connected to one of the plurality of the first electrodes and the second end is electrically connected to one of the plurality of the third electrodes; two electron emission ends are located in the gap, and each electron emission end includes a plurality of electron emission tips. | 07-28-2011 |
20120133266 | ELELCTRON EMITTER AND ELECTRON EMISSION ELEMENT - The present disclosure provides an electron emitter. The electron emitter includes a carbon nanotube pipe. One end of the carbon nanotube pipe has a plurality of carbon nanotube peaks. The present disclosure also provides an electron emission element. The electron emission element comprises a conductive base and a carbon nanotube pipe. | 05-31-2012 |
20120133267 | ELELCTRON EMITTER AND ELECTRON EMISSION ELEMENT - The present disclosure provides an electron emitter. The electron emitter includes a carbon nanotube linear compound. The carbon nanotube linear compound includes a conductive linear support and a carbon nanotube pipe. The conductive linear support is located in the carbon nanotube pipe. A plurality of carbon nanotube peaks extends from one end of the electron emitter. | 05-31-2012 |
20120161607 | FIELD EMISSION CATHODE DEVICE AND METHOD FOR MAKING THE SAME - A field emission cathode device includes a substrate, a metal plate attached to the substrate, at least one electron emitter electrical connected with the metal plate, and a filler. The metal plate defines at least one through hole extending through the metal plate. The at least one electron emitter is fixed between the substrate and the metal plate and extends through the at least one through hole. The filler is filled into the at least one through hole to fix the at least one electron emitter. | 06-28-2012 |
20130113360 | COMPOSITION FOR FORMING ELECTRON EMISSION SOURCE, ELECTRON EMISSION SOURCE INCLUDING THE COMPOSITION, METHOD OF PREPARING THE ELECTRON EMISSION SOURCE, AND FIELD EMISSION DEVICE INCLUDING THE ELECTRON EMISSION SOURCE - An electron emission source includes nano-sized acicular materials and a cracked portion formed in at least one portion of the electron emission source. The acicular materials are exposed between inner walls of the cracked portion. A method for preparing the electron emission source, a field emission device including the electron emission source, and a composition for forming the electron emission source are also provided in the present invention. | 05-09-2013 |
20130257262 | CARBON NANOTUBE FIELD EMITTER - The present application relates to a carbon nanotube field emitter. The carbon nanotube field emitter includes a carbon nanotube structure. The carbon nanotube structure includes a plurality of carbon nanotubes joined end-to-end by van der waals attractive force. The carbon nanotube structure has two joined portions, one portion is a triangle shaped carbon nanotube film, which is an electron emitting portion, the other portion is a carbon nanotube wire, which is a support portion. | 10-03-2013 |
20140292180 | ELECTRON EMISSION ELEMENT AND METHOD FOR MANUFACTURING THE SAME - An electron emission device and a method of manufacturing the same are provided. The electron emission device includes: i) a substrate including a metal tip; ii) carbon nano tubes that are positioned on the metal tip; and iii) a lithium layer that is positioned on the carbon nano tubes. | 10-02-2014 |
20140292181 | ELECTRON EMISSION ELEMENT AND METHOD FOR MANUFACTURING THE SAME - An electron emission device and a method of manufacturing the same are provided. The electron emission device includes i) a hydrophilic resin substrate and ii) carbon nano tubes that are positioned on the resin substrate. Surface roughness Ra of the resin substrate is 7.3 μm to 9.75 μm. | 10-02-2014 |