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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Makishima; Hideo
Address:
Tokyo, JP
No. of patents:
28
Patents:












Patent Number Title Of Patent Date Issued
6756734 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrod June 29, 2004
Expressing a perveance of an electron gun to be determined by a form of the electron gun as P.mu., a voltage to be impressed on an accelerating electrode Va and a beam current Ib, voltage Va which satisfies the following expression,is impressed on the accelerating electrode.Further, the
6583567 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrod June 24, 2003
A method and device are provided for preventing deterioration of a cold cathode in an electron tube device that utilizes the cold cathode as an electron source. In accordance with the expression defining the beam current of the electron tube device, Ib<P.mu..times.Va.sup.3/2, where
6310438 Electron tube device mounted with a cold cathode and a method of impressing voltages on electrod October 30, 2001
Expressing a perveance of an electron gun to be determined by a form of the electron gun as P.mu., a voltage to be impressed on an accelerating electrode Va and a beam current Ib, voltage Va which satisfies the following expression,is impressed on the accelerating electrode. Further the
6028391 Field emission device having spherically curved electron emission layer and spherically recessed February 22, 2000
There is provided a field emission thin film cold cathode including a substrate, an electron-emission layer formed on the substrate and having a spherical surface or a curved surface approximated to a spherical surface recessed into the substrate, a first electrode disposed about the
6024618 Method of operating electron tube February 15, 2000
In a method of operating an electron tube including a plurality of emitters formed on a substrate and having sharp tips, gate electrodes surrounding the plurality of emitters, and a peripheral electrode surrounding an electron emission region constituted by the plurality of emitters and
5986388 Field-emission cold-cathode electron gun having emitter tips between the top surface of gate ele November 16, 1999
A field-emission cathode comprises a substrate having a conductive surface, a gate electrode and a focusing electrode overlying the substrate with insulation layers interposed therebetween, a plurality of cavities formed by penetrating the gate electrode, focusing electrode and insulatio
5977719 Field emission cathode type electron gun with individually-controlled cathode segments November 2, 1999
In a field emission cathode type electron gun, a plurality of cathode segments and a plurality of gate control circuits are provided. Each of the gate control circuits is connected to one of the cathode segments. Each of the cathode segments includes a cathode electrode, a gate elect
5965977 Apparatus and method for light emitting and cold cathode used therefor October 12, 1999
There is provided a cold cathode including a substrate, a plurality of electron emitting electrodes formed on the substrate, a first insulating layer formed on the substrate and formed with a plurality of first cavities in which the electron emitting electrodes are disposed, a gate e
5929557 Field-emission cathode capable of forming an electron beam having a high current density and a l July 27, 1999
A field-emission cold cathode has a conductive cold-cathode substrate on which a plurality of conical emitters and a base insulator layer are formed. A ring-shaped gate electrode, a plate-shaped inner electrode, and a ring-shaped outer electrode are formed on the base insulator layer wit
5821679 Electron device employing field-emission cathode October 13, 1998
Concave portions are formed, in a matrix fashion, in a substrate formed of metal or semiconductor. An electron emission layer made of material having small work function such as a diamond thin film is formed on the bottom portion of the concave portion. A protruding portion of the substr
5814931 Cold cathode and cathode ray tube using the cold cathode September 29, 1998
The invention forms on a substrate an electron emission area composed of at least a single micro cold cathode which is composed of an emitter and a gate electrode, arranges plural focusing electrodes surrounding this electron emission area in the periphery of the electron emission area,
5734223 Field emission cold cathode having micro electrodes of different electron emission characteristi March 31, 1998
In a field emission cold cathode composed of a plurality of micro cold cathodes, the diameter of a plurality of openings formed in a gate electrode is large at a central region of an electron emission zone but small at a peripheral region of the electron emission zone, or the thickne
5680011 Cold cathode density-modulated type electron gun and microwave tube using the same October 21, 1997
Tips of emitters are protruded over a control electrode in a field emission cathode. The cathode is a part of an input cavity, and an anode facing the cathode is also a part of the input cavity. A voltage which is in the vicinity of a threshold value or less than the threshold value is a
5650688 Field emission cold cathode element having exposed substrate July 22, 1997
A field emission cold cathode element having a conducting substrate, a dielectric layer which is on the substrate and has holes, emitter electrodes each of which have a sharp-pointed tip and stand on the substrate in the respective holes in the dielectric layer, and a gate electrode
5648698 Field emission cold cathode element having exposed substrate July 15, 1997
A field emission cold cathode element having a conducting substrate, a dielectric layer which is on the substrate and has holes, emitter electrodes which have a sharp-pointed tip and stand on the substrate in the respective holes in the dielectric layer, and a gate electrode which is
5635789 Cold cathode June 3, 1997
Disclosed is a field emission device which has an emitter formed in the center portion where ion bombardment is likely to occur, and a gate formed partially thicker, or which has a metal layer with the same potential as the emitter and a high melting point, formed in the center portion o
5604401 Field-emission cold cathode for dual-mode operation useable in a microwave tube February 18, 1997
An electron beam having a high current ratio between the high and the low current modes, susceptible to no significant change in beam diameter and relatively free from ripples in both modes is formed. This electron beam is used to realize a highly reliable, simple-structured and compact
5585689 Field-emission cathode having integrated electrical interconnects and electron tube using the sa December 17, 1996
A field emission cathode includes a conductive substrate (1) having emitters (4) formed thereon, a contact hole (5) extending therethrough, and a conductive layer (7) formed within the contact hole (5) thereby extending through the conductive substrate (1). A gate electrode (3) and t
5559390 Field emission cold cathode element with locally thickened gate electrode layer September 24, 1996
The subject is a field emission cold cathode element having a conducting substrate, a dielectric layer which is on the substrate and has holes, emitter electrodes which have a sharp-pointed tip and stand on the substrate in the respective holes in the dielectric layer and a gate elec
5557160 Field emission cathode including cylindrically shaped resistive connector and method of manufact September 17, 1996
A high resistance epitaxial layer is formed on a substrate, and a resistance layer is formed for each emitter by injecting ions into the high resistance epitaxial layer via an aperture formed through a gate electrode. An emitter is provided on the resistance layer. Alternatively, ion
5550435 Field emission cathode apparatus August 27, 1996
It is the object of the invention to provide a field emission cathode apparatus comprising plural electron-emitters which eliminates nonuniformity of electric emission density over an emissive area, controls emission currents by active devices, and improves reliability of the apparat
5514847 Electron beam radiator with cold cathode integral with focusing grid member and process of fabri May 7, 1996
A first laminated sub-structure having a semiconductor substrate, a lower insulating layer on the semiconductor substrate, emitter electrodes formed in micro-apertures in the lower insulating layer and a gate electrode on the upper surface of the lower insulating layer is aligned with a
5496199 Electron beam radiator with cold cathode integral with focusing grid member and process of fabri March 5, 1996
A first laminated sub-structure having a semiconductor substrate, a lower insulating layer on the semiconductor substrate, emitter electrodes formed in micro-apertures in the lower insulating layer and a gate electrode on the upper surface of the lower insulating layer is aligned with a
5296299 Thermal transfer film March 22, 1994
The present invention provides a thermal transfer film which is prevented from static charging phenomenon, sticking phenomenon and staining of thermal head. This transfer film comprises a base film and an antistatic layer comprising an inorganic polymer of polysiloxane containing silanol
5134034 Heat transfer material July 28, 1992
A heat transfer material comprising a substrate, a heat-meltable ink layer provided on one side of the substrate and a heat-resisting layer provided on the other side of the substrate, the heat-meltable ink layer comprising a carbon black as a coloring agent, a wax and a resin, and the r
5081100 Heat transfer recording material January 14, 1992
A heat-transfer recording material comprising a thin film support having a thermally meltable or thermally sublimable ink layer applied on one side thereof, said thin film support being made of a stretched, cross-linked polyethylene film. The ink layer contains preferably 2 to 15% by wei
4931123 Heat-sensitive color transfer recording medium June 5, 1990
A heat-sensitive color transfer recording medium having a yellow hot-melt ink layer comprising 81 to 92% by weight of a solid wax, 2 to 13% by weight of a resin and a balance of a yellow pigment, can provide clear full color images without causing badness in transfer of a yellow color at
4853274 Thermal transfer material August 1, 1989
A thermal transfer material having a heat resistant layer on a base film, said heat resistant layer having an average surface roughness of 0.15 to 0.35 .mu.m and projections of 0.35 to 1.00 .mu.m high in number of 50 or more per mm.sup.2 on the surface thereof, is excellent in image qual










 
 
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