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| Number | Title | Issue Date |
| 7710009 | 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... | 05/04/2010 |
| 7372192 | Cathode for cathode ray tube with improved lifetime Impregnated cathode for a vacuum tube comprising an emissive part in the form of a porous pellet impregnated with a compound of alkaline earth metals; the pellet is placed in a dish made of a refractory material and covered with a porous metal foil forming the emiss... | 05/13/2008 |
| 7265735 | Self scanning flat display A self-scanning flat display having a light active matrix in the form of a set of periodic lines which include light-reflecting, light-transparent, or light-emitting elements. These elements are controlled by current or a charge generated by a scan raster device. Th... | 09/04/2007 |
| 7218047 | Indirectly heated electrode for gas discharge tube An indirectly heated cathode for gas discharge tube C1 comprises a heater 1, a double coil 2, a plate member 3, and a metal oxide 10. An electrical insulating layer 4 is formed on the surface of heater 1. Heater 1 | 05/15/2007 |
| 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 |
| 7208864 | Oxide cathode for electron gun with a differentially doped metallic substrate The metallic substrate of this cathode has a thickness ≦100 μm and contains a plurality of reducing agents as Si or Al and on the top face 111, 0.005% | 04/24/2007 |
| 7118630 | Apparatus for depositing a low work function material Short-wavelength photons are used to ablate material from a low work function target onto a suitable substrate. The short-wavelength photons are at or below visible wavelength. The elemental composition of the deposit is controlled by the composition of the target a... | 10/10/2006 |
| 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 |
| 7045945 | Cold cathode ray fluorescent tube and liquid crystal display device using the cold cathode fluorescent tube The present invention decreases invalid light emitting regions, which are generated at both ends of an outer tube and enlarges a valid light emitting region of a phosphor layer, which enlarges the light emitting region of a lighting device. In a cold cathode fluores... | 05/16/2006 |
| 7026749 | Cathode for electron tube and method of preparing the same A cathode for an electron tube and a method of preparing the same are provided. The cathode includes a base metal and an electron emissive material layer attached to the base metal. A surface roughness, which is measured from the distance between a highest point and... | 04/11/2006 |
| 7019450 | Cathode ray tube with a particle-particle cathode coating The invention relates to a cathode ray tube equipped with at least one oxide cathode comprising a cathode carrier having a cathode base of a first cathode metal and having a covering layer of ultrafine metal particles that contain nickel. The oxide cathode also comp... | 03/28/2006 |
| 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 |
| 6979942 | Cathode emissive body for an impregnated cathode of an electron tube Body (1) formed from a porous matrix impregnated with an electron-emitting material, defined by external faces (11, 12, 13) that all have a roughness of less than 0.2 μm. Because of this surface finish, the operation and the lifetime of the cat... | 12/27/2005 |
| 6965199 | Coated electrode with enhanced electron emission and ignition characteristics An improved electrode capable of smaller variances and mean breakdown voltage, increased breakdown reliability, smaller electron emission turn-on requirements, and stable electron emissions capable of high current densities include a first electrode material, an adh... | 11/15/2005 |
| 6917148 | Oxide cathode for an electron gun, having a denser and thinner emissive zone Cathode comprising a substrate (2) supporting a cathode emissive coating, comprising what is called an emissive central zone (12) and what is called a nonemissive peripheral zone (11); according to the invention: | 07/12/2005 |
| 6882093 | Long-life electron tube device, electron tube cathode, and manufacturing method for the electron tube device An electron tube cathode includes an emitter layer 30 whose main component is barium oxide and that includes a metal and/or a metal oxide as a dopant is formed on a base metal 20 whose main component is nickel and that includes a reducing agent such as... | 04/19/2005 |
| 6833659 | Cathode ray tube comprising a cathode of a composite material A cathode ray tube provided with at least one oxide cathode comprising a cathode carrier with a cathode base of a cathode metal and a cathode coating of an electron-emitting material containing a particle-particle composite material of oxide particles of an alkaline... | 12/21/2004 |
| 6815876 | Cathode with improved work function and method for making the same A cathode with an improved work function, for use in a lithographic system, such as the SCALPEL™ system, which includes a buffer between a substrate and an emissive layer, where the buffer alters, randomizes, miniaturizes, and/or isolates the grain structure at a ... | 11/09/2004 |
| 6800990 | Cathode material including rare earth metal used as electron emission source for electron beam apparatus The present invention provides a cathode material for an electron beam device. The cathode material is characterized by the fact that it includes 0.5-9.0% by weight of a rare earth metal of the cerium group, 0.5-15.0% by weight of tungsten or rhenium or both tungste... | 10/05/2004 |
| 6791251 | Metal cathode and indirectly heated cathode assembly having the same A metal cathode for an electron-emission device, and an indirectly heated cathode assembly employing the metal cathode where the metal cathode is formed of a quaternary alloy including 0.1-20% by weight barium (Ba), 0.1-20% by weight a metallic mobilizer facilitatin... | 09/14/2004 |
| 6781296 | Method and apparatus for use with an electron gun employing a thermionic source of electrons A method includes providing an electron gun having a first head with a thermionic electron source and an accelerating electrode, and further includes replacing the first head with a second head having a power rating substantially different than that of the first hea... | 08/24/2004 |
| 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 |
| 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 |
| 6734609 | Cathode in CRT and method for fabricating the same The present invention relates to a cathode in a cathode ray tube which can shorten a picture presentation time lag and reduce power consumption. The cathode includes an emission layer at an upper part of the cathode and a sleeve for inserting a heater therein, where... | 05/11/2004 |
| 6705915 | Method of assembling an emissive cathode for electron gun A process for assembling a cathode for electron gun comprising a body of emissive material, a cup into which the body of emissive material is inserted, a substantially cylindrical metal skirt, the said process comprising the following successive steps: insert... | 03/16/2004 |
| 6646366 | Directly heated thermionic flat emitter A directly heated thermionic flat emitter has an emission surface divided by slots into interconnects that have respective terminal lugs forming power leads arranged at a peripheral edge. A number of segments are connected by respective narrow webs to the... | 11/11/2003 |
| 6641450 | Method of making a cathode for an electron tube A cathode for an electron tube and a preparing method therefor are provided. In the cathode for an electron tube having a base metal and an electron-emitting material layer, the particle size of the micro structure of the surface of the base metal is cont... | 11/04/2003 |
| 6624555 | Directly heated thermionic flat emitter A directly thermionic flat emitter is presented whose emitting surface contains meandering conductor tracks. The conductor tracks are formed by slots in the emitting surface. The slots are arranged as claimed in a pattern of cuts which comprises a multipl... | 09/23/2003 |
| 6563256 | Low work function materials for microminiature energy conversion and recovery applications Low work function materials are disclosed together with methods for their manufacture and integration with electrodes used in thermionic conversion applications (specifically microminiature thermionic conversion applications). The materials include a mixe... | 05/13/2003 |
| 6559582 | Cathode and process for producing the same There is provided a cathode which is easily operable, harmless, and stable at high temperature at least 1,400° C. as well as excellent in electron emission characteristics at the same time, and the process for preparing the same. The cathode of the prese... | 05/06/2003 |
| 6504293 | Cathode ray tube having an improved cathode A cathode ray tube is provided with a phosphor screen and an electron gun including a cathode having an electron-emissive material layer formed on a surface of a cathode base metal. The electron-emissive material layer includes a first layer made of an al... | 01/07/2003 |
| 6495949 | Electron tube cathode An electron tube cathode is disclosed, comprising a base, electron emissive material layers formed on the base and containing alkaline earth metal oxides including barium, and reducing metal layers interposed between the emissive material layers. The meta... | 12/17/2002 |
| 6492765 | Cathode structure for cathode ray tube In a cathode with an electron-emissive material layer formed on a base containing a reducing element, a relationship of 0.24ࣘB/Aࣘ0.93 is satisfied, where A denotes a surface for layer formation of the base and B represents an area where the base and ... | 12/10/2002 |
| 6455990 | Apparatus for an electron gun employing a thermionic electron source An apparatus for an electron gun includes a one piece thermionic electron source that extends in a longitudinal direction and has opposite end portions, an aperture disposed therebetween, and two longitudinal portions that extend in the longitudinal direc... | 09/24/2002 |
| 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 |
| 6376975 | Impregnated cathode and method for manufacturing the same An impregnated cathode whose initial electron emitting performance, lifetime property, and insulating property for an electron gun are excellent and that is suitable for mass production, and a method for manufacturing the same. In the impregnated cathode,... | 04/23/2002 |
| 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 |
| 6252342 | Impregnated cathode structure for a CRT and its manufacturing method Disclosed is an impregnated cathode structure for a cathode ray tube and its manufacturing method, in which electron emitting material impregnated in a pellet is free from an effect of the welding heat generated when the pellet is secured to a heater slee... | 06/26/2001 |
| 6252341 | Impregnated cathode having varying surface porosity An impregnated cathode and a method of manufacturing the same are provided for suppressing emission of unwanted electrons and particles generated from an excess electron emitting substance so as to achieve a steady electron emission characteristic. The im... | 06/26/2001 |
| 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 |
