Abstract:
An electrode having a surface of an electrically conducting ultrananocrystalline diamond having not less than 10 atoms/cm nitrogen with an electrical conductivity at ambient temperature of not less than about 0.1 ( OMEGA cm) is disclosed as is a method of remediating toxic materials with the electrode. An electron emission device incorporating an electrically conducting ultrananocrystalline diamond having not less that 10 atoms/cm nitrogen with an electrical conductivity at ambient temperature of not less than about 0.1 ( OMEGA cm) is disclosed.
Abstract:
A compact electron gun includes a field emission cathode (12), a Pierce-like electrode (18), a gate layer (14), a focus lens layer (16), a focus lens (20), and a convergence cup (22).
Abstract:
The field emission type cathode is made as a multilayered structure (33) in which conductive platelike corpuscles (30) are piled, whereby an edge portion of end surface of a field emission type cathode for emitting electrons is formed sharply and easily.
Abstract:
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 142D), and cone-topped pedestals (92/1021). A typical emitter contains a substrate (20) that provides structural support. A patterned lower non-insulating region (22) formed with parallel lines is provided over insulating material of the substrate. Electron-emissive filaments (30A, 30B, or 30/88D1) are formed in pores (281) extending through an insulating layer (24) furnished over the lower non-insulating region. A patterned non-insulating gate layer (34B, 40B, or 46B) is typically provided over the insulating layer to form a gated device. Charged-particle tracks (261 or 50A1/50B1) are preferably employed to define locations for electron-emissive features. Usage of charged-particle tracks enables the electron-emissive features to be quite small and spaced closely together.
Abstract:
A process for making a field emitter cathode by attaching a particulate field emitter material to a substrate. The particulate field emitter material is dispersed in a solution of a metal compound in a solvent and deposited onto the surface of the substrate. The substrate is heated for sufficient time to completely reduce the metal compound to the metal. The resulting field emitter cathode is a substrate coated with a thin layer of the metal with a particulate field electron emitter material embedded therein and protruding therefrom.
Abstract:
The present invention provides an electron emitting device for efficiently emitting electron beams by applying a forward bias to an MIS, pn, and a pin structure using a diamond layer so as to supply electrons from an electron supply layer to a p-type diamond layer. Furthermore, the present invention provides a method for easily and efficiently performing important production processes for producing a highly efficient electron emitting device having a diamond layer and controlling a surface state of the diamond layer. A multi-layer structure including an electrode layer, an electron supply layer and a diamond layer is used as the structure thereof. Alternatively, the electron affinity state of the surface of the diamond layer is arbitrarily controlled by a method such as ultraviolet ray irradiation.
Abstract:
An imaging apparatus (100) for providing an image from a display (106) to an observer (101), comprising: a display (106) generating an optical output, an imaging surface member (109) constructed and arranged for viewing by said observer, and a scanning mirror/lens assembly (102) optically interposed between the display and the imaging surface member, and constructed and arranged to motively repetitively scan the display, generate a scanned image, and transmit the scanned image to the imaging surface member, for viewing of the scanned image. Various field emitter display designs and subassemblies are described, which may be usefully employed in such imaging apparatus.
Abstract:
The present invention provides improved methods for making field emission devices by which one can pre-deposit and bond the diamond particles or islands on a flexible metal foil at a desirably high temperature (e.g., near 900° C or higher), and then subsequently attach the high-quality- emitter-coated conductor foil onto the glass substrate. In addition to maximizing the field emitter properties, these methods provide high-speed, low-cost manufacturing. Since the field emitters can be pre-deposited on the metal foil in the form of long continuous sheet wound as a roll, the cathode assembly can be made by a high-speed, automated bonding process without having to subject each of the emitter-coated glass substrates to plasma heat treatment in a vacuum chamber.