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WO/1995/007543A1 |
Electron-emissive elements in area electron emitters suitable for flat-panel displays are fabricated at high packing density. The electron-emissive elements have various shapes such as filaments (30A, 30B, or 30/88D1), cones (1181 or 142...
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WO/1995/002256A1 |
A cathode structure contains electronegative matter (22), which consists of oxygen and/or fluorine, chemically bonded to a carbon containing cathode (10). The bonding is accomplished by subjecting carbon-containing cathode to the electro...
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WO/1995/000758A1 |
The means (31 to 33, 34 to 38) for generating a magnetic field in the main channel of the plasma engine are adapted to produce, in said main channel (24) an essentially radial magnetic field at the downstream end (225) of the channel (24...
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WO/1994/028571A1 |
A field emission cathode includes a layer of conductive material (14) and a layer of amorphic diamond film (12), functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The em...
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WO/1994/020975A1 |
A vertical field emitter structure (116) and field emission device such as a flat panel display (123) utilizing such structure. Self-aligned gate and emitter fabrication is described, together with virtual column field emitter structures...
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WO/1994/017546A1 |
An emitter device is disclosed comprising an anode (1) and a cathode (2), both of which are mounted on a substrate (3) made of a dielectric material. The anode (1) is situated at level (AA) below the level (BB) of the edge of the cathode...
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WO/1994/015350A1 |
A matrix addressed diode flat panel display (820) including a diode pixel structure. The flat panel display includes a cathode assembly having a plurality of cathodes (210-280), each cathode including a plurality of cathode conductive ma...
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WO/1994/015352A1 |
A flat panel display for displaying visual information includes a plurality of corresponding light-emitting anodes (130), and field-emission cathodes (170), each of the anodes emitting light in response to emission from each of the corre...
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WO/1994/014153A1 |
A flat screen having individually dipole-protected microdots and consisting of a field-emission cathode comprising microdots (12) individually protected by means of a series electrical coupling with a dipole (13) consisting of a depletio...
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WO/1994/003916A1 |
A method of making a cold cathode comprises providing a body of a semiconductor e.g. of silicon having a surface including at least one projection, and subjecting the surface to anodic etching, e.g. to produce thereon a porous layer of s...
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WO/1994/001882A1 |
Photoemitters are used to convert received photons of light (or other electromagnetic radiation) into electrons, and it is common to employ an electron multiplier to amplify the low electron flux for use by an imaging or a counting syste...
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WO/1993/021646A1 |
An electron gun comprising a source (2) with electron-emitting micro-points, an anode (8) spaced apart from the micro-points, a device (16) for applying a high voltage to the anode, and a set (10) of electrodes distributed around the bea...
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WO/1993/018536A1 |
A vertical microelectronic field emitter (10) includes a conductive top portion (15) and a resistive bottom portion (16) in an elongated column (12) which extends vertically from a horizontal substrate (11). An emitter electrode (17) may...
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WO/1993/015522A1 |
A cold cathode device is provided comprising a wide-bandgap (>5 eV) material exhibiting negative electron affinities, low trap densities, and high carrier mobilities, a junction between a first region (50) of the wide-bandgap material ha...
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WO/1993/013514A1 |
An electric fluorescent device (EFD) (34) is used as the back light towards source for a black/white LCD (32). Where the EFD provides red, green and blue light, the LCD displays multi-color or full-color images. The EFD includes a number...
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WO/1993/009593A1 |
In order to limit the heating-current for, in particular, a travelling-wave tube (WR) during the cathode-heating time, the invention proposes that alternating current supplied to the heating filament (Rf) through a transformer (Tr) be re...
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WO/1993/004496A1 |
Methods and apparatus for providing signal modulation or control of collector initialized and sustained field emission in field emitter devices without input circuit loading. A special control gate is used to modulate emission with no re...
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WO/1993/002442A1 |
In a cathodoluminescent display device (100), spacer elements (106, 107, 108) are used to provide rigid mechanical support between the face (109) and back (110) plates when the chamber of the device is evacuated so that thin face and bac...
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WO/1993/001610A1 |
A field emission cathode (10) having a parallel array of individual electrically conductive rods (16) of metal silicide or germanide in a silicon-based or germanium-based single crystal matrix (14). Each rod (16) has an emission end (24)...
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WO/1992/020087A1 |
Image source, for converting image data in the form of serial charges into a high-resolution imagewise light pattern, combines semiconductor charge-coupled devices for receiving the charges, associated small-scale field emission arrays f...
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WO/1992/019005A1 |
A cold cathode (3) in the form of a solid thin film component is the basis for electron-optical terminal image devices. The thin-film structure consists of a base electrode (5), e.g. in the form of a bundle of parallel strips, an insulat...
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WO/1992/009095A1 |
An electron source is provided, particularly as a point microcathode wherein a microcathode (MP) is located in a cavity (CA) of a dielectric (3). A first gate electrode (VG1) surrounds the cavity (CA) and a second gate electrode (VG2) su...
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WO/1992/005571A1 |
A cold-cathode field emission device controls electron emission by using a current source (101) coupled to the emitter (102). The open circuit oltage of the current source (101) is less than the voltage at which the FED would emit electr...
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WO/1992/004732A1 |
A variety of field emission devices (308) and field emission device structures which employ non-substrate layers of single-crystal silicon (203) are provided. By employing non-substrate layers of single-crystal silicon (203), improved em...
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WO/1992/003851A1 |
A planar doped barrier region of semiconductor material is coupled to a vacuum or gaseous region to provide electron emission from the planar doped barrier region into the vacuum or gaseous region. When a voltage is applied across the pl...
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WO/1992/002030A1 |
The present invention relates generally to a new integrated Vacuum Microelectronic Device (VMD) and a method for making the same. Vacuum Microelectronic Devices require several unique three dimensional structures: a sharp field emission ...
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WO/1992/002031A1 |
The present invention relates generally to new structures for a field emission cathode and processes for fabricating the same. The field emission is made of any material that is capable of emitting electrons under the influence of an ele...
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WO/1992/000395A1 |
An iron-nickel alloy comprising 25 to 50 wt% of nickel, 0.001 to 0.1 wt% of carbon, 0.01 to 6 wt% of at least one element selected from among groups IVa and Va elements, such as niobium or tantalum, and the balance comprising substantial...
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WO/1991/017559A1 |
The invention relates to electron power tubes with grid. For high powers and high energies, very high, localized heating of the grid takes place due to the high currents. It is the case for example for the screen grid (grid G2) of meshed...
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WO/1991/015874A1 |
A variety of integrally combined field emission devices (104) and non-field emission control and/or controlled devices (101), such as field effect transistors (201) and bipolar transistors (101). Various embodiments of field emission dev...
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WO/1991/014283A1 |
An improved transferred electron III-V semiconductor photocathode (12) comprising an aluminum contact pad (40) and an aluminum grid (42) structure that improves quantum efficiency by removing a major obstacle to electrons escaping into t...
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WO/1991/012624A1 |
A cold cathode field emission device that includes a ballast resistor (202, 303, 402) integrally formed therewith and coupled to the emitter (204, 302, 403) to allow appropriate compensation for manufacturing and performance variations i...
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WO/1991/012627A1 |
A cold cathode field emission device having a cone shaped emitter (112, 208) formed with a substantially normal (but not absolutely normal) vapor deposition process (109) wherein the substrate (101, 201) need not be rotated with respect ...
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WO/1991/012625A1 |
A solid state field emission device (100) having a cathode (111) that is peripherally disposed about the anode (106) and axially displaced with respect thereto. The device itself is encapsulated, readily manufacturable, and has comparabl...
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WO/1991/012660A1 |
Field emission devices are cascaded in multiple stages, such that certain structures (206, 208, 304, and 307) function as electrodes for field emission devices of differing stages.
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WO/1991/010252A1 |
A plurality of field emitters (52) in the form of hollow, upstanding pointed cones or pyramids formed by a molding process extend from a surface of an electrically conductive layer (38, 40, 42). An electrically conductive mesh (44) is ad...
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WO/1991/007771A1 |
A cold cathode field emission device (100) having an encapsulating layer (109) formed through a low angle vapor deposition process. The encapsulation layer (109) includes an electrode (111). Depending upon the embodiment, the electrode c...
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WO/1991/005363A1 |
A flat screen display constructed through use of cold cathode field emission devices (112), wherein the devices (112) serve to support the structural integrity of the resultant assembly, and wherein edge emission is utilized to energized...
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WO/1991/005361A1 |
A field emitting device having a plurality of preformed emitter objects (201, 301). The emitter objects include sharp geometric discontinuities, and a significant number of these geometric discontinuities are oriented in a way that suppo...
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WO/1991/003831A1 |
A cathode-heating device comprises an emitter (1) secured on central sections (3) of at least two filament-like heating elements (4), whose peripheral sections (5) are oriented at the same sharp angle (alpha) to the longitudinal geometri...
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WO/1991/003817A1 |
A conductive pattern forming composition having an excellent electric conductivity and comprising a powdery alloy prepared by pulverizing a cooled eutectic mixture of 99.5 to 94.5 wt % of nickel with 0.5 to 5.5 wt % of boron, glass frit,...
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WO/1991/003065A1 |
A cathode heating unit for electron-ray devices comprises an emitter (1) mounted on at least one heating element (2) secured on current-feeding buses (4) rigidly connected with a base (5) made of an electroinsulating material, on which i...
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WO/1991/002371A1 |
A field emission device wherein two collecting electrodes (104 and 106) are provided to selectively collect electrons that are emitted from an emitting electrode (108) as induced by a gate electrode (103).
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WO/1990/011609A1 |
The CRT gun described comprises a dense-network source of field-effect micro-points. According to the invention, the surface of the source presents irregularities in the distribution of the micro-points, to give priority to certain parts...
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WO/1990/011611A1 |
A discharge display having excellent discharge characteristics and high reliability is put into practice without permitting pinholes to develop in the film for emitting secondary electrons and enabling the film for emitting secondary ele...
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WO/1990/007788A1 |
An image display device uses direct-heated linear cathode (12) as a source of an electron beam, and has vibration preventing members (13), (18), (19), (20), (21) and (22) made of an inorganic material and each having a hole. The cathode ...
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WO/1989/010628A1 |
An encapsulated high brightness source for use in or with an electron beam system such as an electron beam microscope. The source preferably includes a field emitter (48). The source includes source enclosure means which defines an ultra...
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WO/1989/009480A1 |
A dispenser cathode and method for making the same are disclosed wherein a mixture of tungsten and aluminate powders are pressed by a die into a foil sleeve. A heater assembly can be attached to the back of the pellet for activating the ...
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WO/1989/009479A1 |
Process for manufacturing field-emission point emitters from a monocrystalline substrate (1) of suitable orientation covered with an insulating layer (2) from which square elemental zones, having a suitable orientation in relation to the...
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WO/1989/004087A1 |
A microwave distributed amplifier (210) includes a plurality of cascaded field emission triodes (211, 212, 213), each having a field emission element (218) for emitting electrons, a grid (224) disposed downstream from the field emission ...
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