Abstract:
An electron source includes a substrate, a coating layer provided on the substrate, plural electron emission elements disposed on the coating layer, and a metal for connecting the plural electron emission elements. The electron emission element includes a conductive film including the electron emission part disposed on the coating layer, with the conductive film being connected to a wiring line with a conductive member for blocking the metals contained in the wiring lines from being transferred to the conductive film.
Abstract:
An electron-emitting device having a small electron beam size is proposed. In order to provide a high definition image display device having high image quality by utilizing this type of electron-emitting device and an electron source, a cathode electrode (2) has an opening which is trenched in a portion thereof, and further, the depth at which the opening is trenched is deep at a peripheral portion of the opening bottom face, and shallow at a central portion of the opening bottom face. A surface of an electron-emitting material is formed in a portion deeper than a boundary surface between the cathode electrode and an insulating layer.
Abstract:
A plasma display device including a plasma display panel, a chassis base proceeding substantially parallel to the plasma display panel, and a heat conductive medium closely adhered to the plasma display panel and the chassis base while being disposed between the plasma display panel and the chassis base. The side of the heat conductive medium facing the plasma display panel and/or chassis base is provided with a plurality of prominent portions. Depressed portions are disposed between the prominent portions to remove the gap between the heat conductive medium and the respective plasma display panel and/or chassis base. Contact area enlargement members are formed at the prominent portions to improve the attachment efficiency of the heat conductive medium to the respective plasma display panel and/or chassis base.
Abstract:
The invention relates to a silent discharge lamp in which support elements for supporting a top plate opposite a base plate are designed as a unipartite component of the top plate and have a tapering contour.
Abstract:
A base end 12a of an arc tube unit 12 is inserted in a glass tube 50 which is previously fixed to an insulating plug unit 14, and a shroud tube 18 and the glass tube 50 are then bonded and fixed to each other in such a state that an amount of insertion of the arc tube unit 12 is regulated in order to set a dimension L between an optical reference plane Po of the insulating plug unit 14 and the tip position of a bar-shaped electrode 26B of an arc tube 16 to be a predetermined set dimension Lo. Consequently, the arc tube unit 12 can be fixed and supported on the insulating plug unit 14 with a simple structure in a simple process, and furthermore, it is possible to eliminate a possibility that the shroud tube 18 might be damaged, for example, broken by the fastening force of a metal band as in the conventional art.
Abstract:
Each pixel of a field emission device includes a resistor with at least one emitter tip thereover and at least one substantially vertically oriented conductive element positioned adjacent the resistor. In a field emission array, a conductive element may contact each resistor of a line of pixels. A method for fabricating the field emission array includes forming a plurality of substantially parallel conductive lines, depositing at least one layer of semiconductive or conductive material over and laterally adjacent each conductive line, and forming a hard mask in recesses of the surface of the uppermost material layer. The underlying material layer or layers are patterned through the hard mask, exposing substantially longitudinal center portions of the conductive lines. The remaining semiconductive or conductive material is patterned to form the emitter tips and resistors. At least the substantially central longitudinal portions of the conductive traces are removed to form the conductive elements.
Abstract:
A field emission device with a micro-channel gain element included a plurality of field emission or “cold” cathodes (102) formed into an array. The cold cathodes are typically modulated by a grid (108) having a driving voltage. A microchannel gain element (114) is secondary electron emissive material within each of the channels. The channels correspond number and location to the cathode and enable multiplication of electron emitted by the cathodes. Multiplication of the electrons enables the cathodes to be driven at a lower current of emitted electrons than normally applied, absent the microchannel, to obtain the same resulting beam. The beam existing each of the micro-channels is directed to an anode (130), which can include a phosphor (128) for use in a flat panel display. Alternatively, anode can include a semiconductor substrate having a reactive resist, and an electrostatic lens structure can be employed to focus the beams to produce a mask pattern on the substrate according to a predetermined mask pattern.
Abstract:
An electron emission source includes a plurality of strip-like cathode electrode lines formed on a lower substrate, an insulating layer formed on the cathode electrode lines; and a plurality of strip-like gate electrode lines formed on the insulating layer in such a manner as to intersect the cathode electrode lines, wherein a number of fine holes are formed in each of intersections between the cathode electrode lines and the gate electrode lines. The intersection forms a pixel region corresponding to one pixel of a display. The fine holes pass through the gate electrode lines and the insulating layer and reach the cathode electrode lines. A metal made projecting structure having a trapezoidal shape in cross-section is formed in each of the fine holes in such a manner as to project from the bottom of the fine hole. An electron emission portion on the surface of which carbon nano-tubes are erected is formed on the upper surface of the projecting structure. Such an electron emission source is effective to realize a low voltage drive, make the current amount uniform, avoid the extension of electron beams, prolong the service life, and prevent occurrence of short-circuit between the electrodes upon production.
Abstract:
A flat panel display and a method for forming a flat panel display. In one embodiment, the flat panel display includes a cathodic structure which is formed within an active area on a backplate. The cathodic structure includes a emitter electrode metal composed of strips of aluminum overlain by a layer of cladding material. The use of aluminum and cladding material to form emitter electrode metal gives emitter electrode metal segments which are highly conductive due to the high conductivity of aluminum. By using a suitable cladding material and processing steps, a bond between the aluminum and the cladding material is formed which has good electrical conductivity. In one embodiment, tantalum is used as a cladding material. Tantalum forms a bond with the overlying resistive layer which has good electrical conductivity. Thus, the resulting structure has very high electrical conductivity through the aluminum layer and high conductivity into the resistive layer. Electrode structures that use resistor material, chromium-containing material, nickel and vanadium alloy, and gold are also disclosed.
Abstract:
A plurality of field emission device cathodes each generate emission of electrons, which are then controlled and focused using various electrodes to produce an electron beam. Horizontal and vertical deflection techniques, similar to those used within a cathode ray tube, operate to scan the individual electron beams onto portions of a phosphor screen in order to generate images. The use of the plurality of field emission cathodes provides for a flatter screen depth than possible with a typical cathode ray tube.