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7556749 |
Electron source
To provide an electron source to be used for a surface analyzer such as a scanning or transmission electron microscope or an Auger electron spectroscope, or an electron beam lithography machine,...
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7545089 |
Sintered wire cathode
A porous cathode structure is fabricated from a plurality of wires which are placed in proximity to each other in elevated temperature and pressure for a sintering time. The sintering process...
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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...
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7348718 |
Discharge electrode implemented by a wide bandgap semiconductor and a discharge lamp using the same
A discharge electrode emitting electrons into a discharge gas, encompasses an emitter and current supply terminals configured to supply electric current to the emitter. The emitter embraces a wide...
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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...
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7138754 |
Cathode for electron tube and method for manufacturing the same
An oxide cathode for an electron tube and a method for manufacturing the oxide cathode are provided. In the oxide cathode including a sleeve for a heater, a metal substrate formed on the top of the...
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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...
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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...
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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...
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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...
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6972522 |
Magnetron
A magnetron capable of being efficiently assembled is provided. The magnetron includes a filament, a pair of shields, a pair of leads, a pair of connection plates, and a pair of terminal rods. The...
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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 );...
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6903499 |
Electron gun and a method for using the same
An electron gun includes an electron emission cathode, a control electrode, and an extractor and the electron emission cathode is made of rare earth hexaboride. A tip of the electron emission...
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6828996 |
Electron beam patterning with a heated electron source
An electron source has an anode and a cathode that is capable of being negatively biased relative to the anode, the cathode having an electron emitting portion and a cathode axis. An...
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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...
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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...
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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...
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6759799 |
Oxide-coated cathode and method for making same
The oxide cathode comprises a support and an oxide layer on the latter. It furthermore includes particles of a conducting material having a first end incorporated in the support and a second end...
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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...
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6600257 |
Cathode ray tube comprising a doped oxide cathode
A cathode ray tube is provided with at least one oxide cathode including a cathode carrier with a cathode base of a cathode metal and a cathode coating of an electron-emitting material with oxide...
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6552479 |
Cathode ray tube having an improved heater
A cathode ray tube has an electron gun including an indirectly heated cathode structure having a heater therein. The heater has a major heating portion formed of a spirally wound heating wire and...
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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...
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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 0.24≦B/A≦0.93 is satisfied, where A denotes a surface for layer formation...
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6417607 |
Cold electrode for gas discharges
Cold electrodes for gas discharges have an electrically conductive carrier material on which an emission coating is disposed. The photoelectric output work of the material of the emission coating...
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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...
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6362563 |
Two-layer cathode for electron gun
A cathode for use in an electron gun includes a base metal comprising Ni as a principal component and a two-layer electron emissive material disposed on the base metal. The inner layer is comprised...
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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...
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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....
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6300711 |
Indirectly heated cathode with a thermal absorption layer on the sleeve and cathode ray tube
An indirectly heated cathode that can enhance the withstand voltage and the efficiency of radiating heat from a heater to a tubular sleeve, and a cathode ray tube using such a cathode. The...
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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...
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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...
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6232708 |
Cathode with an electron emitting layer for a cathode ray tube
A cathode for a cathode ray tube includes a base having a closed top portion and containing nickel as its main component, an electron-emitting material layer coated on the top portion of the base...
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6191528 |
Cathode ray tube having an improved indirectly heated cathode
A cathode ray tube includes a phosphor screen and an electron gun. The electron gun includes an indirectly heated cathode structure and plural grid electrodes in axially spaced relationship. The...
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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...
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6091187 |
High emittance electron source having high illumination uniformity
Direct and indirect electron bombardment provide a sufficiently high degree of temperature uniformity across the emitting surface of a large-area electron source for an electron beam projection...
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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....
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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...
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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...
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5959395 |
Cathode for electron tube
A cathode for an electron tube formed by coating the base of the cathode for the electron tube with an alkaline-earth metal carbonate containing at least barium as the alkaline-earth metal, and...
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5945683 |
Electron beam exposure device
An electron beam exposure device includes an alignment optical system; an electromagnetic lens system; a stage on which the sample is provided; and an electron gun. The electron gun is comprised of...
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5936334 |
Impregnated cathode with composite top coat
A cathode having a matrix body (1) impregnated with an alkaline earth compound, whose surface is provided with a top coat (2, 3, 4) comprising a high melting point metal, such as particularly...
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5925976 |
Cathode for electron tube having specific emissive material
A cathode for an electron tube is described that has little deterioration of emission current after long operation, is used as a long-life oxide cathode even with high current density in a CRT, and...
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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...
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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...
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5808404 |
Electron tube including a cathode having an electron emissive material layer
A cathode for an electron tube has an electron emissive material layer on the surface of a cathode base metal. The electron emissive material layer has a three-layer structure composed of a first...
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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...
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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,...
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5729082 |
Cathode structure comprising a heating element
A cathode structure comprises at an end portion (1) an electron-emitting material (4) and a heating element (5) of wire (7), said cathode structure having a plurality of primary helical turns (8)....
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5708321 |
Cathode for electron tube having an electron-emission layer including a lanthanum-magnesium-manganese oxide
A cathode for an electron tube includes a base metal containing nickel as a major component and an electron-emissive material layer which is formed on the base metal and comprises an alkaline earth...
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5661369 |
Charged particle generation with a resonant electrical circuit
Apparatus for generating a stream of charged particles, for example for use in an electron beam welding device. The apparatus includes a charged particle source (5) such as a filament and a target...
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