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| Number | Title | Issue Date |
| 7414356 | Cathode structure including barrier for preventing metal bridging from heater to emitter A cathode structure comprises a heater including a columnar ceramic body and a heating wire that is partially buried in the ceramic body, and a cathode unit disposed at a first end surface of the ceramic body. The heating wire leads out from a second end surface of ... | 08/19/2008 |
| 7276847 | Cathode assembly for indirectly heated cathode ion source A cathode in an indirectly heated cathode ion source is supported by at least one rod or pin. The cathode is preferably in the form of a disk, and the support rod is smaller in diameter than the disk to limit thermal conduction and radiation. In one embodiment, the ... | 10/02/2007 |
| 7215070 | System, method and apparatus for multi-beam lithography including a dispenser cathode for homogeneous electron emission A dispenser cathode which comprises an emission surface, a reservoir for material releasing, when heated, work-function-lowering particles, and at least one passage for allowing diffusion of work-function-lowering particles from said reservoir to said emission surfa... | 05/08/2007 |
| 7078851 | Cathode ray tube The indirectly heated cathode structure includes a base metal having a thermal electron emitting material layer, a cylindrical sleeve holding the base metal at one end portion thereof and housing a heating heater in the inside thereof, an support having a large-diam... | 07/18/2006 |
| 7071605 | Cathode structure for color cathode ray tube The present invention relates to a cathode ray structure for a cathode ray tube, and more particularly, to a cathode structure for a cathode ray tube capable of maximizing thermal efficiency and minimizing power consumption. ... | 07/04/2006 |
| 6992427 | High-yield cathode body, cathode sleeve structure, and cathode-ray tube, cathode sleeve substrate, and cathode body production method A cathode sleeve structure for housing a heater. The cathode sleeve structure includes: a case member that is cylindrical and an end thereof is open; a plurality of supporting members that extend radially from vicinities of the end of the case member; and a linkage ... | 01/31/2006 |
| 6984831 | Gas flow restricting cathode system for ion implanter and related method A cathode system having a cathode element configured to extend through an aperture in a wall of an arc chamber of an ion implanter system. A gas flow through a spacing between the cathode element and the aperture is restricted by a restriction member. A method of io... | 01/10/2006 |
| 6946781 | Cathode with optimized thermal efficiency A cathode structure for an electron gun of a cathode-ray tube having a reduced size and providing a fast cathode start-up time and excellent thermal efficiency. The cathode comprises a closed chamber consisting of a cap supporting an emitting part of the cathode and... | 09/20/2005 |
| 6897605 | Cathode assembly and color picture tube utilizing the same A cathode assembly includes an insulation member, three holders arranged inline in the insulation member, and a support member having a rim portion in which the insulation member is inserted and supported. When a thickness of the insulation member is D millimeters (... | 05/24/2005 |
| 6847043 | Ion sources for ion implantation apparatus The invention relates to improving the efficiency of ion flow from an ion source, by reducing heat loss from the source both in the ion chamber of the ion source and its constituent parts (e.g. the electron source). This is achieved by lining the interior of the ion... | 01/25/2005 |
| 6798128 | Cathode-ray tube cathode and alloy therefor A nickel alloy for the manufacture of cathodes for cathode-ray tubes, comprises magnesium and aluminium in proportions chosen so as to allow good adhesion of an emissive oxide layer to the basis metal cap consisting of the alloy. ... | 09/28/2004 |
| 6771014 | Cathode design A cathode system includes an impregnated pellet and a conductive cup, which has substantially cylindrical sides. The conductive cup has an open end sized to receive the impregnated pellet and a closed end. The closed end has an internal surface and an external surfa... | 08/03/2004 |
| 6762540 | One-piece tab assembly for a cathode cup of an X-ray imaging machine A cathode assembly (43) for a computed tomography scanning system (10) is provided. The cathode assembly (43) includes a one-piece tab assembly (52) for simple and relatively quick installation on a cathode cup (44). In one embodim... | 07/13/2004 |
| 6762544 | Metal cathode for electron tube An indirectly heated metal cathode for an electron tube includes a metal sleeve of an Mo material, a metal emitter disposed on the metal sleeve and including Pt or Pd as a main component; and a buffer layer between the metal sleeve and the metal emitter. The buffer ... | 07/13/2004 |
| 6737794 | Cathode ray tube A cathode ray tube having a cathode comprising a sleeve with a heater. installed therein and a base metal with a side portion covering an outer circumference of the sleeve and an upper surface portion covering an upper side: of the sleeve, satisfies the following fo... | 05/18/2004 |
| 6686682 | Cathode in cathode ray tube Disclosed is a cathode in a cathode ray tube including a cathode sleeve having a heater inside, a base metal supported by the cathode sleeve so as to be formed at an upper end of the cathode sleeve, and an emission layer formed on the base metal, wherein ... | 02/03/2004 |
| 6614147 | Cathode ray tube having an improved indirectly heated cathode structure A cathode ray tube has a phosphor screen and an electron gun including an indirectly heated cathode structure and a plurality of electrodes disposed downstream of the indirectly heated cathode structure for projecting an electron beam toward the phosphor ... | 09/02/2003 |
| 6548958 | Hollow cathode lamp In a hollow cathode lamp comprising, in a bulb having a light exit port, a hollow cathode and an anode opposed to the light exit port, which comprises a tubular hood having a tubular shape, having one open end connected to the hollow cathode, having anoth... | 04/15/2003 |
| 6396202 | Electron gun structure including cathode support strap with opening portion A cathode structure comprises a cathode, a cathode sleeve, a cathode holder and a cathode strap. The cathode sleeve contains a heater. A hold structure includes a cylindrical cathode support cylinder for holding the cathode structure, and a cathode suppor... | 05/28/2002 |
| 6376976 | Cathode-ray tube having oxide cathode and method for producing the same It is an object to obtain a cathode ray tube having a high resolution without decreasing electron emission property. Surface of a cathode was leveled by heating during forming a vacuum in order to oxidize a carbonate salt to an oxide as an electron emissive ... | 04/23/2002 |
| 6369494 | Cathode structure and electron gun for cathode ray tubes The invention relates to a cathode structure intended to be inserted into an electron gun for a cathode-ray tube. The cathode comprises a cathode body on the end of which is placed an emissive pellet, the cathode body being held in place inside a sheath by ... | 04/09/2002 |
| 6348756 | Electric discharge tube or discharge lamp and scandate dispenser cathode An electric discharge tube or discharge lamp comprising a scandate dispenser cathode which is composed of a cathode body and a coating having an emissive surface, said cathode body including a matrix of at least one refractory metal and/or a refractory al... | 02/19/2002 |
| 6335590 | Cathode ray tube having an indirectly heated cathode provided with a heater having a structure which substantially prevents cracks in an insulating coating thereof A cathode ray tube include phosphor screen and an electron gun. The electron gun includes an indirectly heated cathode structure and plural grid electrodes arranged in axially spaced relationship. The cathode structure includes a base metal having an elec... | 01/01/2002 |
| 6255764 | Electron gun cathode with a metal layer having a recess The present invention relates to a cathode for an electron gun for increasing its life cycle under a high current density load by ensuring a steady diffusion path of reducing component served for generating free radical barium. The present invention discl... | 07/03/2001 |
| 6242852 | Electron gun A heater is built in an inner sleeve of an electron gun, and an impregnated type cathode is fixed at an end portion, on the grid electrodes side, of the inner sleeve. The inner sleeve, having an outside diameter ranging from about 1.0 mm to 1.4 mm and a l... | 06/05/2001 |
| 6166485 | Electron gun with heat dissipation elements Picture display device comprising an electron gun with cathodes having an enhanced dissipation of heat by virtue of an enlarged surface or an increase of the emissivity of the surface.... | 12/26/2000 |
| 6130502 | Cathode assembly, electron gun assembly, electron tube, heater, and method of manufacturing cathode assembly and electron gun assembly A cathode assembly (27) includes a thermally conductive insulating substrate (21) having a pair of opposing surfaces. A cathode base member (24) is formed on one surface of the insulating substrate, and a heating member (25) for heating the cathode base m... | 10/10/2000 |
| 6054802 | Cathode for electronic tube Problems with a conventional cathode for electronic tubes arose because metals composing the substrate were subjected to heat deformation, resulting in a relatively lage drift of cutoff voltage. The present invention diminishes the heat deformation of the... | 04/25/2000 |
| 6054800 | Cathode for an electron gun The present invention discloses a cathode for an electron gun comprising a base metal mainly composed of nickel and containing one kind of reducing element at least, a metal layer mainly composed of tungsten, tungsten-nickel, or zirconium-tungsten on the ... | 04/25/2000 |
| 6016026 | Impregnated cathode for low power cathode-ray tube A low power impregnated cathode consisting of a pallet, a cup, an inner sleeve, a cap, and an outer sleeve, is characterized in that the diameter of the pellet is less than at least one and half times of the thickness of the pellet, and is characterized i... | 01/18/2000 |
| 5982083 | Cathode for electron tube A cathode for an electron tube includes a layer of a electron emitting substance containing alkaline earth metal oxides containing 0.01--20.0 wt % of both a lanthanum compound and a magnesium compound or a lanthanum-magnesium compound disposed on a base m... | 11/09/1999 |
| 5900692 | Indirect cathode sleeve An indirect cathode sleeve and manufacturing method thereof capable of substantially reducing electric power consumption of a heater disposed inside the cathode sleeve and simultaneously reducing a picture-producing time by oxidizing an inside surface of ... | 05/04/1999 |
| 5898262 | Cathode structure and electron gun for cathode ray tube using the same In an electron gun for a color cathode ray tube including a cathode structure having three electrodes, a control electrode and a screen electrode, and a plurality of focus electrodes and last accelerating electrodes for forming electron lenses, the cathod... | 04/27/1999 |
| 5872423 | Color cathode ray tube having an improved first grid electrode A color cathode ray tube includes a panel portion having a phosphor screen on its inside surface and suspending a shadow mask hanged closely spaced from the phosphor screen, a neck portion for housing an electron gun, and a funnel portion for connecting t... | 02/16/1999 |
| 5869924 | Cathode structure and CRT electron gun adopting the same A cathode structure and an electron gun for a CRT adopting the same are provided. The cathode structure has an external case, an insulating member filled in the external case, a plurality of pins fixedly inserted into the insulating member and of which en... | 02/09/1999 |
| 5866975 | Low-temperature cathode having an emissive nanostructure An electric discharge tube or discharge lamp, in particular a flat-panel display screen, includes one or more low-temperature cathodes having a holder, which, optionally, is provided with a heating or cooling element, a conductive bottom layer which is ap... | 02/02/1999 |
| 5821683 | Cathode assembly having thermion emitter of cermet pallet The present invention relates to a cathode assembly employing a cermet pellet and a method for manufacturing the same. The cathode assembly of the present invention has a good quality such as a low work function and an enhanced life span as compared with ... | 10/13/1998 |
| 5818161 | Electron gun cathode holder with manufacturing holes The present invention provides an electron gun cathode for CRTs including a sleeve, on which a cap having an electromagnetic radiation matter applied on its upper face, is fixed. A sleeve supporter that supports and is merged with this sleeve is inserted ... | 10/06/1998 |
| 5793157 | Cathode structure for a cathode ray tube A cathode ray tube has a cathode structure including a cathode body comprised of porous refractory metal impregnated with electron-emissive material, a metal cup for containing the cathode body therein, a metal sleeve having a closed end and mounting a he... | 08/11/1998 |
| 5780959 | Cathode structure for cathode ray tube An improved cathode structure for a cathode ray tube includes a first metal tube which can receive an emission part and a heating element, a second metal tube constituting the cathode shielding, and means for retaining the first tube in position inside th... | 07/14/1998 |
