Abstract: A centrifugal casting apparatus for different materials may include a mold having a shape corresponding to a shape of an outer surface of a casting to be produced, and having a cavity receiving molten metals therein, a molten metal guide inserted into the mold and configured to guide the molten metals so that the molten metals are separately injected into the mold, a guide fixing support fixing the molten metal guide to a predetermined position, and a motor configured to rotate the mold around a rotation axis.

Abstract: A centrifugal casting apparatus for different materials may include a mold having a shape corresponding to a shape of an outer surface of a casting to be produced, and having a cavity receiving molten metals therein, a molten metal guide inserted into the mold and configured to guide the molten metals so that the molten metals are separately injected into the mold, a guide fixing support fixing the molten metal guide to a predetermined position, and a motor configured to rotate the mold around a rotation axis.

Abstract: A method for identifying a bridge node in a network using a processor and memory unit in a specially programmed special purpose-purpose computer including the steps of, for each node in a plurality of nodes in the network: determining a global metric proportional to total traffic flow in the network and through the node; determining a local metric proportional to traffic flow between the node and each second node in the network connected to the node and traffic flow between each second node and each third node in the network connected to a second node; determining a second local metric proportional to the respective traffic flows between each node and each second node; and calculating a respective combination of the global metric and the first and second local metrics; and selecting, a bridge node from among the plurality of nodes based on the respective combinations.

Abstract: A method for identifying a bridge node in a network using a processor and memory unit in a specially programmed special purpose-purpose computer including the steps of, for each node in a plurality of nodes in the network: determining a global metric proportional to total traffic flow in the network and through the node; determining a local metric proportional to traffic flow between the node and each second node in the network connected to the node and traffic flow between each second node and each third node in the network connected to a second node; determining a second local metric proportional to the respective traffic flows between each node and each second node; and calculating a respective combination of the global metric and the first and second local metrics; and selecting, a bridge node from among the plurality of nodes based on the respective combinations.

Abstract: A high-resolution field emission display that applies a field emission device (or a field emission array) being an electron source element to a flat panel display device. The field emission display includes an upper plate and a lower plate that face each other, wherein the lower plate and the upper plate are vacuum-packaged in parallel positions. A dot pixel of the lower plate includes a high-voltage amorphous silicon thin film transistor formed on the glass substrate of the lower plate, a diode type field emission film partially formed on the drain of the high-voltage amorphous silicon TFT, a passivation insulation layer formed on the high-voltage amorphous silicon TFT and the lateral side of the diode type field emission film, and an electron beam focusing electrode/light-shading film which vertically overlaps with the high-voltage amorphous silicon TFT on some parts of the passivation insulation layer and is formed on a lateral side of the diode type field emission film.

Abstract: A cathode structure for a field emission device, which is an essential component of a field emission device, and a method of fabricating the same are provided. An emitter material for electron emission constituting cathodes is formed in a particulate emitter, the particulate emitter is formed of a material from which electrons can be easily emitted at a low electric field. A significant advantage of the present invention over a conventional art is that the present invention patterns an emitter material to a cathode electrode using a photolithography process or a lift-off process. In the lift-off process, the emitting compound is patterned using a sacrifice layer. Also, in another embodiment of the present invention, there is disclosed a method of easily fabricating cathodes for a triode-type field emission device using a particulate emitter material at a low process temperature.

Abstract: A high-resolution field emission display that applies a field emission device(or a field emission array) being an electron source element to a flat panel display device. The field emission display includes an upper plate and a lower plate that fac each other, wherein the lower plate and the upper plate are vacuum-packaged in parallel positions. A dot pixel of the lower plate includes a high-voltage amorphous silicon thin film transistor formed on the glass substrate of the lower plate, a diode type field emission film partially formed on the drain of the high-voltage amorphous silicon TFT, a passivation insulation layer formed on the high-voltage amorphous silicon TFT and the lateral side of the diode type field emission film, and an electron beam focusing electrode/light-shading film which vertically overlaps with the high-voltage amorphous silicon TFT on some parts of the passivation insulation layer and is formed on a lateral side of the diode type field emission film.

Abstract: A method for manufacturing a semiconductor package comprising the steps of (a) forming a plurality of bumps on a metal frame and a bridge for connecting and supporting the bumps, (b) coating liquid solder on the bumps, (c) aligning the frame with respect to a semiconductor substrate where patterns are formed so that the bumps are positioned on the patterns, (d) soldering the bumps on the patterns, and (e) separating the bumps from the frame by breaking a connecting portion of the bumps and the bridge.

Abstract: A cathode structure for a field emission device, which is an essential component of a field emission device, and a method of fabricating the same are provided. An emitter material for electron emission constituting cathodes is formed in a particulate emitter, the particulate emitter is formed of a material from which electrons can be easily emitted at a low electric field. A significant advantage of the present invention over a conventional art is that the present invention patterns an emitter material to a cathode electrode using a photolithography process or a lift-off process. In the lift-off process, the emitting compound is patterned using a sacrifice layer. Also, in another embodiment of the present invention, there is disclosed a method of easily fabricating cathodes for a triode-type field emission device using a particulate emitter material at a low process temperature.