| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 313310000 | DISCHARGE DEVICES HAVING A THERMIONIC OR EMISSIVE CATHODE | 58 |
| 20080203885 | THERMAL-ELECTRON SOURCE - A thermal-electron source includes a substrate; and a thermionic cathode having conductivity, and being provided on the substrate, and including a plurality of microscopic pores on a surface of the thermionic cathode. | 08-28-2008 |
| 20080258599 | Field emission cathode and method for fabricating the same - A field emission cathode includes a conductive substrate and a carbon nanotube film disposed on a surface of the conductive substrate. The carbon nanotube film includes a plurality of successive and oriented carbon nanotube bundles parallel to the conductive substrate, the carbon nanotubes partially extrude from the carbon nanotube film. A method for fabricating the field emission cathode includes the steps of: (a) providing a conductive substrate; (b) providing at least one carbon nanotube film, the carbon nanotube film including a plurality of successive and oriented carbon nanotube bundles joined end to end, the carbon nanotube bundles parallel to the conductive substrate, and (c) disposing the at least one carbon nanotube film to the conductive substrate to achieve the field emission cathode. | 10-23-2008 |
| 20090039754 | LOW VOLTAGE ELECTRON SOURCE WITH SELF ALIGNED GATE APERTURES, FABRICATION METHOD THEREOF, AND DEVICES USING THE ELECTRON SOURCE - A method of fabricating an electron source having a self-aligned gate aperture is disclosed. A substrate is deposited on a first conductive layer. Over the first conductive layer an emitter layer is deposited. The emitter layer includes one or a plurality of spaced-apart nano-structures and a solid surface with nano-structures protruding above the surface. An insulator is conformally deposited over the emitter layer surface and forms a post from each protruding nano-structure. A second conductive layer is deposited over the insulator and the second conductive layer and the insulator are removed from the nano-structures such that apertures are formed in the second conductive layer and at least the ends of the nano-structures are exposed at the centers of said apertures. | 02-12-2009 |
| 20090045716 | ELECTRON EMISSION DEVICE - An electron emission device includes i) a substrate, ii) a cathode electrode on the substrate, having a first opening, and comprising an ultraviolet non-transmitting material, iii) an electron emission region in the first opening and for emitting electrons, and iv) a gate electrode electrically insulated from the cathode electrode and having a second opening through which the electrons emitted from the electron emission region pass. The ultraviolet transmittance of the gate electrode is about 30% or more. A distance between a first imaginary line passing through a center of the electron emission region and normal to a plane surface of the substrate, and a second imaginary line passing through a center of the second opening and normal to the plane surface of the substrate is about 0.5 μm or less. | 02-19-2009 |
| 20090058252 | ELECTRON-EMITTING DEVICE AND MANUFACTURING METHOD THEREOF - A manufacturing method of an electron-emitting device according to the present invention includes the steps of: preparing a substrate having a first electrode and a second electrode, and a conductive film for connecting the first electrode and the second electrode; and forming a gap on the conductive film by applying a voltage between the first electrode and the second electrode; wherein a planar shape of the conductive film has a V-shape portion between the first electrode and the second electrode. | 03-05-2009 |
| 20090079320 | Field electron emission source having carbon nanotubes and method for manufacturing the same - An exemplary method for manufacturing a field electron emission source includes: providing a substrate ( | 03-26-2009 |
| 20090085457 | FIELD EMISSION CATHODE AND METHOD FOR MANUFACTURING THE SAME - A field emission cathode and a method for manufacturing the same are disclosed. In the present invention, the carbon nanotube is coated with an amorphous coating material so that the above-mentioned field emission cathode resists oxidization in a high electrical field and the structure thereof can be protected. Additionally, the field emission cathode can exhibit field emission performance in a low electrical field, and generate stable current as the electrical field increases so that the efficiency and stability of the field emission current can be enhanced. | 04-02-2009 |
| 20090108727 | ELECTRON-EMITTING DEVICE, ELECTRON SOURCE, IMAGE DISPLAY APPARATUS, AND MANUFACTURING METHOD OF ELECTRON-EMITTING DEVICE - An electron-emitting device according to the present invention is characterized by that a gate electrode is located above a cathode electrode; a insulating member is located between the gate electrode and the cathode electrode; and the gate electrode and the insulating member are provided with openings, respectively, the openings being communicated with each other, wherein the insulating member is formed by layering three or more insulating layers including a first insulating layer, which is brought in contact with the gate electrode and has an opening, of which size is approximately the same as the size of the opening of the gate electrode; and a second insulating layer, which is located nearer to the side of the cathode electrode than the first insulating layer and has a larger opening than the opening of the gate electrode. | 04-30-2009 |
| 20090121605 | METHOD OF MANUFACTURING TUBULAR CARBON MOLECULE AND TUBULAR CARBON MOLECULE, METHOD OF MANUFACTURING RECORDING APPARATUS AND RECORDING APPARATUS, METHOD OF MANUFACUTRING FIELD ELECTRON EMISSION DEVICE AND FIELD ELECTRON EMISSION DEVICE - A method of manufacturing a tubular carbon molecule capable of regularly aligning a carbon nanotube with a finer spacing is provided. A catalyst is arranged on a material substrate ( | 05-14-2009 |
| 20090160306 | Thermal electron emission source having carbon nanotubes and method for making the same - A thermal electron emission source includes a first electrode, a second electrode insulated from the first electrode, a carbon nanotube string electrically connected to and in contact with the first electrode and the second electrode, and a number of electron emission particles. The carbon nanotube string is composed of a number of closely packed carbon nanotube bundles, and each of the carbon nanotube bundles includes a number of carbon nanotubes. The electron emission particles are uniformly dispersed in the carbon nanotube string and are coated on the surfaces of the carbon nanotubes. A method for making the thermal electron emission source is also provided. | 06-25-2009 |
| 20090167139 | PHOSPHORUS-DOPED DIAMOND FILM ALLOWING SIGNIFICANTLY REDUCED ELECTRON EMISSION VOLTAGE, METHOD FOR PRODUCING THE SAME, AND ELECTRON SOURCE USING THE SAME - According to the present invention, a phosphorus-doped diamond film allowing a significantly reduced electron emission voltage, a method for producing the same, and a diamond electron source using the same, such diamond electron source exerting stable and excellent electron emission characteristics, which can be used for a cold cathode surface structure operable with low voltage, are provided. Also, a method for producing a phosphorus-doped diamond film, comprising growing a diamond film on a diamond substrate by a microwave CVD method in an atmosphere containing gases (methane and hydrogen) and phosphorus with the use of tertiary butyl phosphorus as a source of addition of phosphorous, such diamond film containing phosphorus at a concentration of 10 | 07-02-2009 |
| 20090256464 | ELECTRON BEAM APPARATUS AND IMAGE DISPLAY APPARATUS USING THE SAME - The present invention provides an electron beam apparatus provided with an electron-emitting device which has a simple structure, shows high electron-emitting efficiency and stably works. This electron beam apparatus has an insulating member and a gate formed on a substrate, a recess portion formed in the insulating member, a protruding portion that protrudes from an edge of the recess portion toward the gate and is provided on an end part of a cathode opposing to the gate, which is arranged on the side face of the insulating member; and makes an electric field converge on an end part in the width direction of the protruding portion to make an electron emitted therefrom. | 10-15-2009 |
| 20090284121 | CATHODE WITH A SURFACE EMITTER COMPOSED OF ELECTRICALLY CONDUCTIVE CERAMIC - A cathode has a cathode body with a surface emitter composed of an electrically conductive ceramic material. The cathode has a high electron emission and a long lifespan. | 11-19-2009 |
| 20090284122 | Co-processable Photoimageable Silver and Corbon Nanotube Compositions and Method for Field Emission Devices - Described herein are methods of manufacturing an electrode and emitter in a field emission device, and devices formed from the methods. Compositions useful for the manufacture of an electrode and emitter in a field emission device are also described. | 11-19-2009 |
| 20090315444 | THERMAL FIELD EMISSION CATHODE - A thermal field emission cathode which is employed in an electron microscope, a critical dimension examine tool, an electron beam lithograph machine, an electron beam tester and other electron beam related systems as an electron source is disclosed. Embodiments disclose changing coating shape, coating position and shorten emitter length to extend the lifetime of the field emission cathode. | 12-24-2009 |
| 20100019646 | THERMIONIC EMITTING METAL INTERCALATED GRAPHITIC NANOFIBERS - A carbon-based composition comprising graphite carbon nano-fibers intercalated with a metal useful as a thermionic electron emission material. | 01-28-2010 |
| 20100033072 | FIELD EMISSION ELECTRON SOURCE - A field emission electron source for emitting electrons under applied electric field includes a cold cathode having molecules of an aromatic compound vapor-deposited thereon at a pointed end of said cold cathode. | 02-11-2010 |
| 20100060136 | CATHODE FOR ELECTRON EMISSION - A cathode for electron emission, comprising a heating device ( | 03-11-2010 |
| 20100090580 | IMAGE DISPLAY APPARATUS - An image display apparatus includes a face plate including a low-potential electrode and a plate-like spacer including a longitudinal-direction end. The low-potential electrode is set at a lower potential than that of a resistive anode and is disposed between the resistive anode and a feed electrode. The longitudinal-direction end of the plate-like spacer is disposed between the resistive anode and the feed electrode so as to overlap the low-potential electrode. | 04-15-2010 |
| 20100141111 | COMPOSITION FOR INTEGRATED CATHODE-ELECTRON EMISSION SOURCE, METHOD OF FABRICATING INTEGRATED CATHODE-ELECTRON EMISSION SOURCE, AND ELECTRON EMISSION DEVICE USING THE SAME - A composition for an integrated cathode-electron emission source includes (A) 0.5 to 60 wt % of a metal powder, (B) 0.1 to 10 wt % of a carbon-based material, (C) 1 to 40 wt % of an inorganic filler, and (D) 5 to 95 wt % of a vehicle. A method of making an integrated cathode-electron emission source includes coating the composition on a substrate, and heat treating the coated substrate. An electron emission device includes a first substrate and a second substrate facing each other, an integrated cathode-electron emission source including a metal and a carbon-based electron emission source on one surface of the first substrate, and a light emitting unit on one surface of the second substrate. | 06-10-2010 |
| 20100148656 | ELECTRON COLUMN USING CNT-TIP AND METHOD FOR ALIGNMENT OF CNT-TIP - The present invention relates to an electron column using an electron emission source, to which one or more carbon nanotubes (CNTs) are attached, in an electron column structure including an electron emission source and lenses. More particularly, the present invention relates to a method of easily aligning a carbon nanotube (CNT) tip, and an electron column capable of using the method. | 06-17-2010 |
| 20100171408 | LIGHT EMITTING DEVICE AND DISPLAY DEVICE USING THE SAME - A light emitting device and a display device using the same. The light emitting device includes: a substrate provided with recesses formed in a stripe pattern; first electrodes disposed inside the recesses in a stripe pattern aligned parallel to the recesses; electron emission regions disposed on the first electrodes; second electrodes disposed in a stripe pattern aligned in a direction crossing the first electrodes and closely fixed to the substrate; and an adhesive member for fixing the second electrodes to the substrate. The second electrodes include mesh portions spaced apart from tops of the electron emission regions in crossing of the first electrodes and the second electrodes, supports surrounding the mesh portions and connected with the substrate, and combining grooves formed at edges of the supports facing the substrate. The adhesive members are disposed in the combining grooves of the second electrodes to connect the second electrodes with the substrate. | 07-08-2010 |
| 20100176708 | X-RAY EMITTING FOIL WITH TEMPORARY FIXING BARS AND PREPARING METHOD THEREFORE - The invention describes an emitter device ( | 07-15-2010 |
| 20100181894 | FIELD ELECTRON EMITTER INCLUDING NUCLEIC ACID-COATED CARBON NANOTUBE AND METHOD OF MANUFACTURING THE SAME - A field electron emitter includes a thin film layer including a carbon nanotube (“CNT”) disposed on a substrate, wherein the thin film layer includes nucleic acid. | 07-22-2010 |
| 20100201246 | ELECTRON-EMITTING DEVICE AND IMAGE DISPLAY APPARATUS USING THE SAME - An electron-emitting device has an insulating layer having a side surface, a recess portion formed on the side surface of the insulating layer, a gate electrode which is arranged above the recess portion, and a wedge-shaped emitter which is arranged on an edge of a lower side of the recess portion and has a first slope on a side of the recess portion and a second slope on a side opposite to the recess portion. A lower end of the first slope of the emitter enters the recess portion, and both the first slope and the second slope of the emitter tilt to an outside of the recess portion. | 08-12-2010 |
| 20100219738 | Process for Improving the Oxidation Resistance of Carbon Nanotubes - The disclosure relates to processes for the electrochemical modification of electron emitting materials such as carbon nanotubes. The processes improve the oxidation resistance of the electron emitting materials when they are fired in an oxygen-containing atmosphere such as air. The disclosure also relates to the preparation of cathodes or cathode assemblies, for use in a field emission device, wherein are contained an electron field emitter made from such electron emitting material. | 09-02-2010 |
| 20100237762 | ELECTRON SOURCE AND ELECTRON BEAM APPARATUS - Provided is an electron source which outputs a stable electron beam even when vibration is applied from the external to an apparatus which uses the electron source. The electron source is provided with an insulator ( | 09-23-2010 |
| 20100301734 | Material and device properties modification by electrochemical charge injection in the absence of contacting electrolyte for either local spatial or final states - In some embodiments, the present invention is directed to processes for the combination of injecting charge in a material electrochemically via non-faradaic (double-layer) charging, and retaining this charge and associated desirable properties changes when the electrolyte is removed. The present invention is also directed to compositions and applications using material property changes that are induced electrochemically by double-layer charging and retained during subsequent electrolyte removal. In some embodiments, the present invention provides reversible processes for electrochemically injecting charge into material that is not in direct contact with an electrolyte. Additionally, in some embodiments, the present invention is directed to devices and other material applications that use properties changes resulting from reversible electrochemical charge injection in the absence of an electrolyte. | 12-02-2010 |
| 20100301735 | LIGHT EMISSION DEVICE AND DISPLAY DEVICE USING THE SAME - A light emission device includes a substrate body having a concave portion extending along a first direction within the substrate body; a first electrode within the concave portion and extending along the first direction, the first electrode having a portion separated into a plurality of separate parts, the plurality of separate parts being parallel to each other; a second electrode on a front surface of the substrate body and extending along a second direction crossing the first electrode; and an electron emission unit on the first electrode and spaced apart from the second electrode. | 12-02-2010 |
| 20110031867 | HIGH FREQUENCY TRIODE-TYPE FIELD EMISSION DEVICE AND PROCESS FOR MANUFACTURING THE SAME - Disclosed herein is a triode-type field emission device, in particular for high frequency applications, having a cathode electrode, an anode electrode spaced from the cathode electrode, a control gate electrode arranged between the anode electrode and the cathode electrode, and at least a field-emitting tip; the cathode, control gate and anode electrodes overlapping in a triode area at the field-emitting tip and being operable to cooperate with the field-emitting tip for generation of an electron beam in the triode area. The cathode, control gate and anode electrodes do not overlap outside the triode area, and have a main direction of extension along a respective line; each of these respective lines being inclined at a non-zero angle with respect to each one of the others. | 02-10-2011 |
| 20110050078 | IMAGE DISPLAY APPARATUS - An image display apparatus according to the present invention comprises a rear plate having electron emitting devices, a face plate having an anode electrode arranged in opposition to the electron emitting devices, and a plate-shaped spacer arranged between the rear plate and the face plate, wherein the spacer has a recess at its side of the face plate, the anode electrode has an edge located in opposition to the recess, the recess has the shape of a circular arc having a radius r, and when it is assumed that the recess has a maximum depth of d, a relation of r/d≧1 is satisfied. | 03-03-2011 |
| 20110050079 | DISPLAY APPARATUS - A display apparatus comprises: a rear plate which has an electron-emitting device; a face plate which has an anode electrode and a potential defining electrode; and a plate spacer which is opposite to the anode electrode and the potential defining electrode, between the rear plate and the face plate. An insulative base member of the spacer has a recessed portion which opposes to the anode electrode, the potential defining electrode, and a portion of the face plate between the anode electrode and the potential defining electrode. Thus, electric discharges between the spacer and the anode electrode and between the spacer and the potential defining electrode can be suppressed. | 03-03-2011 |
| 20110050080 | ELECTRON EMISSION ELEMENT - According to the embodiment, an electron emission element includes a conductive substrate, a first diamond layer of a first conductivity type formed on the conductive substrate, and a second diamond layer of the first conductivity type formed on the first diamond layer. Thereby, it becomes possible to provide the electron emission element having a high electron emission amount and a high current density even in a low electric field at low temperature and the electron emission apparatus using this electron emission element. | 03-03-2011 |
| 20110057555 | MATRIX-TYPE COLD-CATHODE ELECTRON SOURCE DEVICE - A matrix-type cold-cathode electron source device includes: an emitter array ( | 03-10-2011 |
| 20110084590 | ELECTRON-EMITTING DEVICE, ELECTRON BEAM APPARATUS AND IMAGE DISPLAY APPARATUS - An electron-emitting device according to the present invention, comprises: an insulating member having a top face, a side face and a recess portion formed between the top face and the side face; a cathode electrode which is disposed on the side face and has an electron emitting portion located in a boundary portion between the side face and the recess portion; and a gate electrode which is disposed on the top face and of which an edge faces the electron emitting portion, wherein the boundary portion in which the electron emitting portion is located has concavity and convexity in a direction parallel to the top face. | 04-14-2011 |
| 20110084591 | THERMAL FIELD EMISSION CATHODE - A thermal field emission cathode which is employed in an electron microscope, a critical dimension examine tool, an electron beam lithograph machine, an electron beam tester and other electron beam related systems as an electron source is disclosed. Embodiments disclose changing coating shape, coating position and shorten emitter length to extend the lifetime of the field emission cathode. | 04-14-2011 |
| 20110101845 | FIELD EMISSION CATHODE DEVICE AND DISPLAY USING THE SAME - A field emission cathode device includes an insulative substrate, a plurality of cathode electrodes, and a plurality of electron emission units. The insulative substrate has a top surface and a bottom surface. The insulative substrate defines a plurality of openings. The cathode electrodes are located on the bottom surface. Each of the electron emission units has a first portion secured between the insulative substrate and one corresponding cathode electrode and a second portion received in one corresponding opening. | 05-05-2011 |
| 20110115363 | ELECTRON EMITTER AND FIELD EMISSION DEVICE PROVIDED WITH ELECTRON EMITTER - An electron emitter includes a guard electrode | 05-19-2011 |
| 20110285271 | FIELD EMISSION DEVICE - A field emission device includes an insulative substrate, an electron pulling electrode, a secondary electron emission layer, a first dielectric layer, a cathode electrode, and an electron emission layer. The electron pulling electrode is located on a surface of the insulative substrate. The secondary electron emission layer is located on a surface of the electron pulling electrode. The cathode electrode is located apart from the electron pulling electrode by the first dielectric layer. The cathode electrode has a surface oriented to the electron pulling electrode and defines a first opening as an electron output portion. The electron emission layer is located on the surface of the cathode electrode and oriented to the electron pulling electrode. | 11-24-2011 |
| 20110309737 | ELECTRON-EMITTING DEVICE AND IMAGE DISPLAY APPARATUS USING THE SAME, AS WELL AS MANUFACTURING METHOD THEREFOR - The electron-emitting device is configured such that an inclination angle θ | 12-22-2011 |
| 20120019122 | DEVICE HAVING ALIGNED CARBON NANOTUBE - A method comprising patterning a substrate to form exposed regions of the substrate sized to deter entangled growth of carbon nanotubes thereon and growing vertically aligned nanotubes on the exposed regions of the substrate. | 01-26-2012 |
| 20120032576 | PHOTO-STIMULATED LOW ELECTRON TEMPERATURE HIGH CURRENT DIAMOND FILM FIELD EMISSION CATHODE - An electron source includes a back contact surface having a means for attaching a power source to the back contact surface. The electron source also includes a layer comprising platinum in direct contact with the back contact surface, a composite layer of single-walled carbon nanotubes embedded in platinum in direct contact with the layer comprising platinum. The electron source also includes a nanocrystalline diamond layer in direct contact with the composite layer. The nanocrystalline diamond layer is doped with boron. A portion of the back contact surface is removed to reveal the underlying platinum. The electron source is contained in an evacuable container. | 02-09-2012 |
| 20120062100 | THERMIONIC ELECTRON EMISSION DEVICE - A thermionic electron emission device includes an insulating substrate and one or more lattices located on the insulating substrate. Each lattice includes a first, second, third and fourth electrode down-leads located on the insulating substrate to define an area. A thermionic electron emission unit is located in the area. The thermionic electron emission unit includes a first electrode, a second electrode, and a thermionic electron emitter. The thermionic electron emitter includes a carbon nanotube film structure. The carbon nanotube film structure includes a carbon nanotube film. The carbon nanotube film includes a number of carbon nanotubes joined end to end along axial directions of the carbon nanotubes by contacting with each other directly. | 03-15-2012 |
| 20120153802 | FIELD EMISSION CATHODE DEVICE AND FIELD EMISSION DISPLAY USING THE SAME - A field emission cathode device includes a cathode substrate, a gate electrode, a first dielectric layer, a cathode electrode, and an electron emission layer. The gate electrode is located on a surface of the cathode substrate. The first dielectric layer is located on a surface of the gate electrode and defines a first opening to expose part of the gate electrode. The cathode electrode is spaced from the gate electrode through the first dielectric layer defining a second opening in alignment with the first opening. A field emission display using the field emission cathode device is also related. | 06-21-2012 |
| 20120169209 | FIELD EMISSION DEVICE AND FIELD EMISSION DISPLAY - The present disclosure provides a field emission device. The field emission device includes an insulating substrate having a first surface, a first electrode, a second electrode, at least one cathode emitter and a secondary electron emitter. The first electrode and the second electrode are spaced from each other and are located on the first surface of the insulating substrate. The cathode emitter is electrically connected to the first electrode and spaced from the second electrode. A secondary electron emitter is spaced from the cathode emitter. The secondary electron emitter has an electron emitting surface exposed to the cathode emitter. A secondary electron emitter is spaced from the cathode emitter. The cathode emitter is oriented toward the secondary electron emitter. | 07-05-2012 |
| 20120169210 | ELECTRON-SOURCE ROD, ELECTRON SOURCE AND ELECTRONIC DEVICE - An electron source is provided that operates at lower temperature and has a low work function and a narrower energy width. The electron source includes a porcelain insulator, two conductive terminals connected to the porcelain insulator, a filament formed between the conductive terminals, and a <100> orientation single crystal rod of at least one metal selected from the group consisting of tungsten, molybdenum, tantalum and rhenium connected to the filament. The rod has an electron-emitting face formed in at its tip region with its {100} crystal face exposed. The rod further includes a diffusion source in its central region that is made of a composite oxide formed from barium oxide and scandium oxide wherein the proportion of barium oxide being 50 mol % or more of BaO and the proportion of scandium oxide being 10 to 50 mol % as Sc | 07-05-2012 |
| 20120280609 | HIGH CURRENT, HIGH ENERGY BEAM FOCUSING ELEMENT - A system collects a source of electrons allowing for internal space charge build-up and hence internal self-electric field build-up that results in self-emission at a predetermined location (needle) in the system using components of:
| 11-08-2012 |
| 20120306348 | FIELD EMITTER - Disclosed is a field emitter, including: a cathode electrode in a shape of a tip; an emitter having a diameter smaller than a diameter of the cathode electrode and formed on the cathode electrode; and a gate electrode having a single hole and located above the emitter while maintaining a predetermined distance from the emitter. | 12-06-2012 |
| 20130187532 | COLD FIELD ELECTRON EMITTERS BASED ON SILICON CARBIDE STRUCTURES - A cold cathode field emission electron source capable of emission at levels comparable to thermal sources is described. Emission in excess of 6 A/cm | 07-25-2013 |
| 20130257263 | ELECTRON EMITTING ELEMENT, ELECTRON EMITTING DEVICE, LIGHT EMITTING DEVICE, IMAGE DISPLAY DEVICE, AIR BLOWING DEVICE, COOLING DEVICE, CHARGING DEVICE, IMAGE FORMING APPARATUS, ELECTRON-BEAM CURING DEVICE, AND METHOD FOR PRODUCING ELECTRON EMITTING ELEMENT - An electron emitting element of the present invention includes an electron acceleration layer between an electrode substrate and a thin-film electrode. The electron acceleration layer includes a binder component in which insulating fine particles and conductive fine particles are dispersed. Therefore, the electron emitting element of the present invention is capable of preventing degradation of the electron acceleration layer and can efficiently and steadily emit electrons not only in vacuum but also under the atmospheric pressure. Further, the electron emitting element of the present invention can be formed so as to have an improved mechanical strength. | 10-03-2013 |
| 20130313963 | CARBON NANOTUBE FIELD EMISSION DEVICE WITH HEIGHT VARIATION CONTROL - A carbon nanotube layer for a field emission cathode where individual carbon nanotubes or small groups of carbon nanotubes that stick out from the surface more than the rest of the layer are avoided. Electron fields will concentrate on these sharp points, creating an enhanced image on the phosphor, resulting in a more luminous spot than the surroundings. Activation processes further free such carbon nanotubes or groups of carbon nanotubes sticking out from the surface, exasperating the problem. | 11-28-2013 |
| 20130342098 | Corrugated Dielectric for Reliable High-current Charge-emission Devices - Micro-fabricated charge-emission devices comprise an electrically conductive gate electrode with an aperture, an electrically conductive base electrode, a charge-emitting microstructure extending from a surface in electrical contact with the base electrode and terminating near the aperture of the gate electrode, and a dielectric layer stack disposed between the base electrode and the gate electrode. The dielectric layer stack comprises a first dielectric layer and a second dielectric layer. The first dielectric layer is disposed between the second dielectric layer and the base electrode. The first dielectric layer is of a different selectively etchable dielectric material than the second dielectric layer. The dielectric layer stack h formed therein a cavity within which the charge-emitting emitting microstructure is disposed. The cavity has a corrugated wall shaped by the first dielectric layer undercutting the second dielectric layer. The corrugated wall surrounds the charge-emitting microstructure disposed within the cavity. | 12-26-2013 |
| 20140077684 | PARTICLE SOURCES AND METHODS FOR MANUFACTURING THE SAME - The present disclosure provides a method for manufacturing a particle source comprising: placing a metal wire in vacuum, introducing active gas, adjusting a temperature of the metal wire and applying a positive high voltage V to the metal wire to generate at a side of the head of the metal wire an etching zone in which field induced chemical etching (FICE) is performed; increasing by the FICE a surface electric field at the top of the metal wire head to be greater than a field evaporation electric field of material for the metal wire, so that metal atoms at the top of the metal wire are evaporated off; after the field evaporation is activated by the FICE, causing mutual adjustment between the FICE and the field evaporation, until the head of the metal wire has a shape of combination of a base and a tip on the base; and stopping the FICE and the field evaporation when the head of the metal wire takes a predetermine shape. | 03-20-2014 |
| 20140097741 | FIELD EMISSION ELECTRON SOURCE AND FIELD EMISSION DEVICE - A field emission electron source includes a linear carbon nanotube structure, an insulating layer and at least one conductive ring. The linear carbon nanotube structure has a first end and a second end. The insulating layer is located on outer surface of the linear carbon nanotube structure. The first conductive ring includes a first ring face | 04-10-2014 |
| 20140191650 | ELECTRIC FIELD EMITTING SOURCE, ELEMENT USING SAME, AND PRODUCTION METHOD THEREFOR - An electric field emitting source is equipped with an electron emitting film which comprises a nano-sized electron emitting substance and has a first surface and a second surface constituting the surface opposite thereto, and a cathode which secures one end of the electron emitting film and comprises a first block and a second block respectively corresponding to the first surface and the second surface of the electron emitting film. | 07-10-2014 |
| 20150028738 | CATHODE COMPONENT FOR DISCHARGE LAMP - A highly durable cathode component for a discharge lamp is provided. A cathode component for a discharge lamp includes a barrel having a wire diameter of 2 to 35 mm and a tapered front end, wherein the cathode component comprises a tungsten alloy containing 0.5 to 3% by weight, in terms of oxide (ThO | 01-29-2015 |
| 20160013005 | FIELD EMISSION CATHODE AND FIELD EMISSION DEVICE | 01-14-2016 |
| 20160013006 | FIELD EMISSION CATHODE AND FIELD EMISSION DEVICE | 01-14-2016 |
