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Ha-Jin Kim, Suwon-Si KR

Ha-Jin Kim, Suwon-Si KR

Patent application numberDescriptionPublished
20080233763METHOD OF ACHIEVING UNIFORM LENGTH OF CARBON NANOTUBES (CNTS) AND METHOD OF MANUFACTURING FIELD EMISSION DEVICE (FED) USING SUCH CNTS - In a method of achieving uniform lengths of Carbon NanoTubes (CNTs) and a method of manufacturing a Field Emission Device (FED) using such CNTs, an organic film is coated to cover CNTs formed on a predetermined material layer. The organic film is etched to a predetermined depth to remove projected portions of the CNTs. After that, the organic film is removed.09-25-2008
20080311818METHOD OF GROWING CARBON NANOTUBES AND METHOD OF MANUFACTURING FIELD EMISSION DEVICE USING THE SAME - Methods of growing carbon nanotubes and manufacturing a field emission device using the carbon nanotubes are provided. The method of growing carbon nanotubes includes the steps of preparing a substrate, forming a catalyst metal layer on the substrate to promote the growing of the carbon nanotubes, forming an amorphous carbon layer on the catalyst metal layer where the amorphous carbon layer partially covers the catalyst metal layer, and growing the carbon nanotubes from a surface of the catalyst metal layer. The carbon nanotubes are grown in a portion of the surface of the catalyst metal layer that is not covered by the amorphous carbon layer. In the method of growing carbon nanotubes, the carbon nanotubes are grow at a low temperature. A density of carbon nanotubes can be controlled to improve field emission characteristics of an emitter of a field emission device.12-18-2008
20090098790Field emission display (FED) and method of manufacture thereof - A Field Emission Display (FED) and a method of manufacturing the FED are provided. The FED includes a substrate; a plurality of under-gate electrodes formed parallel to one another on a top surface of a substrate; a plurality of cathode electrodes formed perpendicular to the under-gate electrodes on an upper portion of the under-gate electrode, each of cathode holes being formed in portions of the cathode electrodes that intersect with the under-gate electrodes; a plurality of emitters formed symmetrical with respect to centers of the cathode holes on the cathode electrodes; and a plurality of gate electrodes formed to be electrically connected to the under-gate electrodes in central portions of the cathode holes.04-16-2009
20090194834Photoelectrochemical device and method using carbon nanotubes - A photoelectrochemical device and method using carbon nanotubes comprise highly electrically conductive carbon nanotubes formed at an interface between a transparent electrode and a metal oxide layer. According to the photoelectrochemical device and method, the interface resistance, which is caused due to an incomplete contact at the interface, is lowered and thus the electron mobility is improved, leading to high power conversion efficiency.08-06-2009
20100009474METHOD OF GROWING CARBON NANOTUBES AND METHOD OF MANUFACTURING FIELD EMISSION DEVICE USING THE SAME - A method of growing carbon nanotubes and a method of manufacturing a field emission device using the same is provided. The method of growing carbon nanotubes includes steps of preparing a substrate, forming a catalyst metal layer on the substrate to promote growing of carbon nanotubes, forming an inactivation layer on the catalyst metal layer to reduce the activity of the catalyst metal layer, and growing carbon nanotubes on a surface of the catalyst metal layer. Because the inactivation layer partially covers the catalyst metal layer, carbon nanotubes are grown on a portion of the catalyst metal layer that is not covered by the inactivation layer. Thus, density of the carbon nanotubes can be controlled. This method for growing carbon nanotubes can be used to make an emitter of a field emission device. The field emission device having carbon nanotube emitter made of this method has superior electron emission characteristics.01-14-2010
20100026165Carbon nanotube emitter and its fabrication method and field emission device (FED) using the carbon nanotube emitter and its fabrication method - A carbon nanotube emitter and its fabrication method, a Field Emission Device (FED) using the carbon nanotube emitter and its fabrication method include a carbon nanotube emitter having a plurality of first carbon nanotubes arranged on a substrate and in parallel with the substrate, and a plurality of the second carbon nanotubes arranged on a surface of the first carbon nanotubes.02-04-2010
20100096969FIELD 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
20100187973CARBON FIBER INCLUDING CARBON FIBER CORE COATED WITH DIELECTRIC FILM, AND FIBER-BASED LIGHT EMITTING DEVICE INCLUDING THE CARBON FIBER - Provided are a carbon fiber including a carbon fiber core coated with a metal oxide film, and a light-emitting device including the carbon fiber. A method of manufacturing the carbon fiber is disclosed.07-29-2010
20100187989INORGANIC ELECTROLUMINESCENT DEVICE AND DISPLAY DEVICE INCLUDING SAME - An inorganic electroluminescent device includes a first electrode, a nano-coil layer disposed on the first electrode, a dielectric layer disposed on the nano-coil layer, a fluorescent layer disposed on the dielectric layer and a second electrode disposed on the fluorescent layer.07-29-2010
20100209154HEATING MEMBER USING CARBON NANOTUBE AND FIXING UNIT USING THE HEATING MEMBER - A fixing unit includes a heating member which includes a core member, and a heating layer. The heating layer is disposed on an outer circumference of the core member. The heating layer includes an elastic material, and carbon nanotube doped with metal and distributed in the elastic material as a conductive filler of the heating layer. A press member faces the heating member to form a fixing nip. The fixing unit applies heat and pressure to toner on a medium passing through the fixing nip, to fix the toner on the medium.08-19-2010
20100260526HEATING MEMBER INCLUDING RESISTIVE HEATING LAYER AND FUSING DEVICE COMPRISING THE HEATING MEMBER - A heating member includes a weight supporter having an outer circumference, and a resistive heating disposed on the outer circumference of the weight supporter. The resistive heating layer includes a conductive filler dispersed in a base material. A pair of electrodes extends along a length direction of a rotational axis of the weight supporter and is arranged along a circumference of the weight supporter for supplying electric power to the resistive heating layer.10-14-2010

Patent applications by Ha-Jin Kim, Suwon-Si KR