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WO/2000/048224A1 |
An electron gun comprises a main cathode (77) in the form of a plate with an electron emission surface (79), and an auxiliary cathode (81) arranged on the back of the main cathode to heat the main cathode (77) by electron bombardment. Th...
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WO/2000/046834A1 |
A field emission device (110, 210, 310, 410) includes an electron emitter (124), a first dielectric focusing layer (122) defining a first aperture (127), and a second dielectric focusing layer (123) defining a second aperture (133). Seco...
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WO/2000/028569A1 |
A high power switching apparatus (100) comprises an annular cathode having a surface capable of emitting a hollow electron beam therefrom and an anode cavity spaced from said cathode. The cavity has an annular opening (151) smaller in di...
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WO/2000/025342A1 |
A variable spot size x-ray tube comprises a cathode having an electron emitting surface providing an electron beam that travels essentially along the tube axis of symmetry to an anode. The anode, spaced from the cathode, includes a targe...
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WO/2000/021112A1 |
The invention concerns an electron source with field-emission cathodes having a first, so-called active region (32), with a cathode support (24) equipped with field effect elements, at least an insulating layer (34) and at least a gate l...
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WO/1999/067804A1 |
An electron tube provided with a semiconductor cathode for emitting electrons, which semiconductor cathode is arranged on a support, a source being arranged in the vicinity of the cathode, in particular, so as to face the free (Si) surfa...
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WO/1999/063566A2 |
The invention relates to an extremely low-capacitance device for forming an electron beam. The device is based on a ceramic body having a monolithic multilayer structure. The ceramic body is produced using LTCC technology, whereby said m...
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WO/1999/062093A1 |
The invention concerns a method for making an electron source with microtips (67), with extraction grid and with focusing grid. Said method enables to align accurately the extraction grid (65) holes (61) with the focusing grid (66) openi...
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WO1999040600A9 |
Field emission devices may include emitter wells formed in a body of dielectric material. A gate conductor may be provided along the upper surface of the dielectric material. A gate hole may be provided in the gate conductor directly abo...
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WO/1999/056299A1 |
An electrode (12 or 30) of an electron-emitting device has a plurality of openings (16 or 60) spaced laterally apart from one another. The openings can be used, as needed, in selectively separating one or more parts of the electrode from...
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WO/1999/048121A1 |
A field emission device with a microchannel gain element provides a plurality of field emission or 'cold' cathodes (102) formed generally into an array. The cold cathodes are typically modulated by a grid (108) having a driving voltage. ...
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WO/1999/045559A2 |
A field emission display (100) includes a dielectric layer (132) having a plurality of emitter wells (134), a plurality of electron emitters (136) disposed one each within the plurality of emitter wells (134), a plurality of conductive r...
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WO/1999/045560A1 |
In an electron tube based on a cold cathode, a cesium source (17) containing Cs¿x?-Au¿y? or Cs¿x?-Sb¿y? is provided near the cold cathode (7), preferably in contact with the first grid (9). Cesium is introduced into the source during...
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WO/1999/040604A1 |
A lateral-emitter field emission device (10) has a gate (60) that is separated by an insulating layer (80) from a vaccum- or gas-filled microchamber environment (20) containing other elements of the device (10). For example, the gate (60...
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WO/1999/039361A1 |
A plurality of field emission cathodes (601) generate an emission of electrons, wherein the emission of electrons is then controlled and focused using various electrodes (602, 603, 604) to produce an electron beam. Horizontal and vertica...
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WO/1999/035659A1 |
An apparatus for high speed gating of electric current based on the resonant interaction of tunnelling electron with optical fields is disclosed. The present invention biases an electron-emitting tip with a DC voltage source and focuses ...
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WO/1999/034229A1 |
A method for profiling the magnetic fields of periodic permanent magnetic field structures as performed by using an electromagnetic solver to generate data fields representative of each individual magnet's contribution to the total vecto...
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WO/1999/030348A1 |
An electron source includes a negative electron affinity photocathode (10) on a light-transmissive substrate (12) and a light beam generator (50) for directing a light beam (22) through the substrate (12) at the photocathode (10) for exc...
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WO/1999/030341A1 |
The present invention relates to a cathodic module comprising a field emitter and a secondary electronic emitter as well as to a vacuum electronic apparatus which comprises such a module and has its anode coated with a luminophore. This ...
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WO/1999/027419A1 |
Optical patterns and lithographic techniques are used as part of a process to embed parallel and evenly spaced conductors in the non-planar surfaces of an insulator to produce high gradient insulators. The approach extends the size that ...
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WO/1999/023679A1 |
An electron-emitting device contains a vertical emitter resistor patterned into multiple laterally separated sections (34, 34V, 46, or 46V) situated between the electron-emissive elements (40), on one hand, and emitter electrodes (32), o...
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WO/1999/019896A1 |
The invention concerns an electron source with microtips comprising: at least an electronic transmitting zone consisting of a plurality of microtips (45) electrically connected to a cathode conductor (41); at least a grid electrode (43) ...
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WO/1999/018423A1 |
The invention introduces applications of the use of coherent and non-coherent light in the high wavelengths of the visible spectrum and in the near wavelengths of the infrared spectrum. The applications include a system for the identific...
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WO/1999/017324A1 |
A structure and method for forming and anodized raw electrode (200) for a field emission display device. The raw electrode having first non-anodized regions (202, 204) and second anodized regions (206).
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WO/1999/016134A1 |
A high aspect ratio gated emitter structure (10) and a method of making the structure are disclosed. Emitters (202) may be provided in a densely packed array on a support (100). Two distinct layers of insulator material (320, 340) may su...
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WO/1999/014780A1 |
A flat panel display includes a cathodic structure (100). The cathodic structure includes a row metal (106) composed of stripes of aluminum overlaid by a layer (107) of cladding material.
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WO/1999/000817A1 |
An electron-emitting device employs a multi-layer resistor (46). A lower layer (48) of the resistor overlies an emitter electrode (42). An electron-emissive element (54) overlies an upper layer (50) of the resistor. The two resistive lay...
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WO/1998/054750A1 |
An electron beam source includes a cathode (200) having an electron emission surface including an active area (208) for emission of electrons and a cathode shield assembly (220) including a conductive shield disposed in proximity to the ...
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WO/1998/054745A1 |
An electron-emitting device contains an electron focusing system (37 or 37A) formed with a base focusing structure (38 or 38A) and a focus coating (39 or 39A) that penetrates, preferably only pathway, into a focus opening (40) extending ...
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WO/1998/054741A1 |
An electron-emitting device utilizes an emitter electrode (12) shaped like a ladder in which a line of emitter openings (18) extend through the electrode. In fabricating the device, the emitter openings can be utilized to self-align cert...
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WO/1998/044529A1 |
Diamond microtip field emitters (25) are fabricated for use in diode and triode vacuum microelectronic devices, sensors and displays. Ultra-sharp emitter tips are formed in a fabrication process in which diamond is deposited into mold ca...
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WO/1998/032145A2 |
A device useful as a display element has an electron emitter (40) and an anode (30) disposed to receive electrons emitted from the emitter. The anode has surface portions differing in resistivity, providing an electron sink portion (80) ...
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WO/1998/029895A1 |
An electron accelerator (10) includes a vacuum chamber (46) having an electron beam exit window (24). An electron generator (31) is positioned within the vacuum chamber for generating electrons. A housing (30) surrounds the electron gene...
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WO/1998/020516A1 |
Disclosed is a flat device for displaying data that comprises a matrix of display elements with passive or active addressing based on a film system with a flat autoemission cathode, as well as a screen with a cathodoluminescent coating. ...
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WO/1998/010457A1 |
A field emission display includes electrostatic discharge protection circuits coupled to an emitter substrate and an extraction grid. In the preferred embodiment, the electrostatic discharge circuit includes diodes reverse biased between...
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WO/1998/010458A1 |
An atomic force microscope utilizes an optical system having a numerical aperture sufficient with the wavelength of light of an incident beam (44) to form a spot on a cantilever (14) having a size of 8 micrometers or less in at least one...
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WO/1998/001886A2 |
A design of an electron optical system is proposed, the design is based on a module approach to its production: a cathode module (100), an electrode module (200), and an anode module (300) are realized separately. Versatility of the elec...
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WO/1997/049111A1 |
A method and apparatus for focusing dispersed charged particles. More specifically, a series of elements, each having successively larger apertures forming an ion funnel, wherein RF voltages are applied to the elements so that the RF vol...
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WO/1997/044805A1 |
The present invention pertains to an electron gun that generates an electron flow to produce r.f. energy therefrom. The electron gun (10) comprises an electrostatic cavity (12) having a first stage (14) with emitting faces (16) and multi...
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WO/1997/044804A1 |
The present invention pertains to an electron gun that generates multiple electron bunches to produce r.f. energy. The electron gun (10) comprises an r.f. input cavity having a first multiple emitting surface (14, 16) and a second multip...
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WO/1997/042645A1 |
A field-electron-emission triode is based on silicon emitters prepared from an oriented whisker array. The whiskers were epitaxially grown on a (111) oriented single-crystalline silicon substrate by crystallization from vapor phase accor...
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WO/1997/027612A1 |
An electron beam device (10) has a cathode (34) that generates a fan-shaped electron beam. A first focusing lens (44, 46, 48, 50) includes first (48) and second (50) plates on opposed sides of a filament. The edges of the plates closest ...
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WO/1997/017715A1 |
The invention relates to a pulsed electron beam source based on the vacuum diode principle and comprising: a vacuum diode with a multipoint emission cathode; a control grid; a pulse generator; a magnetic compression unit made from field ...
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WO/1997/009731A2 |
A field emitter device formed by a veil process wherein a protective layer (64/66) comprising a release layer (64) is deposited on the gate electrode layer (62) for the device, with the protective layer overlying the circumscribing perip...
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WO/1997/009733A1 |
Microelectronic field emission device (10) has an ultra-thin emitter electrode (30) extending parallel to substrate (20) and an anode (40). A control electrode (70) having a lateral dimension a small fraction of the emitter-to-anode gap ...
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WO/1997/009734A1 |
Electron-optical device having two elongate emitting regions arranged symmetrically with respect to a longitudinal axis for producing two electron beams having an elongate cross section. By means of electron grids, the two beams are focu...
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WO/1997/009732A1 |
Electron-optical device having an electron-emitting region, a longitudinal axis and an arrangement of apertured electron grids along the axis. The first grid has an aperture for passing electrons, which aperture is located further outwar...
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WO/1997/008726A1 |
An electron source comprises cathode means and a permanent magnet perforated by a plurality of channels extending between opposite poles of the magnet. Each channel forms electrons received from the cathode means into an electron beam fo...
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WO/1997/008730A1 |
A display system comprises a display screen including a matrix of display elements and a permanent magnet having an array of channels formed therein. Each channel corresponds to a different display element. Each display element comprises...
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WO/1997/003453A2 |
An electron source includes a negative electron affinity photocathode on a light-transmissive substrate and a light beam generator for directing a light beam through the substrate at the photocathode for exciting electrons into the condu...
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