Abstract: There is provided a display device comprising a plurality of active elements on a substrate, a first insulating film for covering the active elements, electroconductive films were separated for each pixel on the first insulating film, a light-emitting layer disposed in an upper layer of the electroconductive films, and a common electrode disposed in an upper layer of the light-emitting layer, wherein a structure is used in which the electroconductive films have a layered film of a first electroconductive film, second electroconductive film, and third electroconductive film; the first electroconductive film is composed of ITO or chromium; the second electroconductive film is composed of aluminum with alumina on a surface; the second electroconductive film covers outside edges of the first electroconductive film; the third electroconductive film is composed of ITO; and the first electroconductive film and third electroconductive film are caused to contact each other.

Abstract: A spark plug including a tubular insulator supported within a metallic shell, and a center electrode provided to axially extend within the insulator. An outer electrode is secured to a front end of the metallic shell so as to extend toward an elevational side of the center electrode. A first spark-erosion resistant noble metal tip is secured to an outer surface of the outer electrode, the outer electrode extending across a front open end of the metallic shell so as to form a spark gap between an extended end of the tip and the elevational side of the center electrode.

Abstract: A dot matrix type fluorescent display device including anode segments arranged at fine pitches is provided which is capable of facilitating arrangement of grids and substantially preventing leakage luminance. A plurality of anode segments are arranged to defined a matrix. Each three wiring conductors are arranged for every anode row. The anode segments in each row are connected to the same writing conductors at every third interval. Each one mesh grid is arranged in correspondence to every two columns of anode segments. The anodes each are arranged so as to outwardly extend by distance one third as large as a dimension thereof from the grid. Each adjacent two grids are applied thereto a positive potential and shifted one by one. Of four columns of anodes corresponding to two grids, two columns of anodes positioned inside the grids are fed with a display signal.

Abstract: A focussing lens for an electron beam device is formed by a helically coiled resistance layer of a fired suspension of a conductive material of a mixture of a lead rathenate, a lead titanate and a ruthenium oxide in a glass formed of silicon dioxide, aluminum oxide and lead oxide.

Abstract: In a spark plug insulator for use in an internal combustion engine, a sintered body has boron nitride and a metal oxide, the boron nitride of the sintered body being 80% or greater by weight, and the sintered body having a thermal expansion coefficient of less than 5.0.times.10-.sup.6 /.degree.C. The metal oxide is selected alone or in combination from the group consisting of magnesium oxide, calcium oxide, silicon oxide, boron oxide, yttrium oxide and aluminum oxide.

Abstract: An unloosable and unturnable lamp base system includes a lamp base with a central hole defined by a cylindrical wall provided with vertical slots, a cylindrical socket with a central upper hole for the lamp base to fit therein and with vertical ribs on inner surface to press on the outer surface of the lamp base. The slots of the lamp base provide elasticity to clamp a lamp with proper tightness when the lamp is fitted in the central hole of the base. The slots also function an escape passage for heat produced by the lamp to escape preventing the lamp from breaking caused by inflation by heat, and from loosing or rotating.

Abstract: In a flat cathode ray tube, a flat glass tube is of three-element structure includes a screen panel integrally provided with skirt portions which are erected from the screen panel along the front end and the opposite side portions thereof continuously, a front panel or a back panel of a sheet-like configuration, and a funnel portion having a neck portion. The screen panel, front panel and funnel portion are combined through frit glasses, and a phosphor screen is formed on the inner surface of the screen panel. An electron gun is disposed within the neck portion, so that an electron beam generated from the electron gun collides with molecules within the flat glass tube to generate negative ions. The negative ions are accelerated and irradiated at the center portion on the skirt portion provided at the front end of the screen panel, whereby the phosphor screen is prevented from being burned by the ions and degradation of the frit glass due to impact of the negative ions is prevented.

Abstract: A spark plug for use in an internal combustion engine comprises an electrically nonconductive body member and a pair of electrodes formed of a material each having titanium diboride as its major component. Tests indicate that titanium diboride electrodes are extremely resistant to electrical erosion. The spark plugs embodying the present invention are particularly useful in continuous cycle or heavy duty cycle engines that have heretofore been the subject of severe electrode erosion.

Abstract: Disclosed is a plasma display panel including a porous metal plate in which a plurality of holes for display cells are formed at positions corresponding to intersections at which a first linear electrode group and a second linear electrode group cross each other with a predetermined interval therebetween, and a front glass plate, wherein openings of the holes of the porous metal plate on the front surface side are larger than openings on the rear surface side, the openings on the rear surface are covered with a molten material of an inorganic dielectric containing glass and are thereby air-tightly sealed. This plasma display panel is light in weight and thin and can be easily assembled.

Abstract: A color cathode ray tube with reduced desquamation includes a panel on which spaced-apart phosphor elements and a black matrix, filling the spaces between and contacting the phosphor elements, are disposed. A metal back covers the phosphor layer and the black matrix and is in direct contact with the black matrix and is spaced from and does not contact the phosphor elements. The direct contact with substantially all the black matrix and the complete separation from the phosphor elements improves the adhesion of the metal back while increasing luminance and reducing desquamation of the metal back.

Abstract: A discharge tube according to the present invention is constructed such that it comprises a cylindrical container made of an insulation tube, a pair of discharge electrodes provided at opposite ends of the cylindrical container, a plurality of insulation coated lines containing a gas-ionization accelerator therein, which insulation coated lines being provided on the inner surface of the cylindrical container covering the regions surrounding a cathode and a discharge space therein in a substantially parallel relation with a center axis of the cylindrical container, wherein the gas-ionization accelerator is made of a silicate powder selected from the group of alkaline metal, alkaline earth metal and so on, or of electrically conductive finely divided particles selected from the group of carbon, metal, metal oxide and so on.

Abstract: An electric lamp assembly comprises a sealed light-transmissive lamp envelope enclosing an interior; a lamp capsule having at least one end located within the interior for generating light upon application of electrical energy, said capsule having a central axis and a press seal formed in said end; two lead-in wires sealed in said envelope; a light-transmissive shroud surrounding said capsule; and a frame within the interior for supporting said capsule and shroud, the frame being mechanically mounted within the interior at one end thereof by an isolation bridge connected between the frame and one of the lead-in wires. The isolation bridge comprises an electrically insulating member of a suitable ceramic having electrically conductive end caps thereon. The end caps contain leads one of which is welded to a stem lead and the other of which is welded to a lower portion of the frame. The assembly eases automation of the lamp.

Abstract: Color selection means for color display tubes is provided comprising a curved mask and a rectangular frame supporting the mask, which frame comprises four parts. To realize a light and nevertheless rigid frame construction, at least two oppositely located frame parts are formed by folded pipes which each have a re-entrant wall with an edge following a curved path. The mask is clamped onto these edges so that the curvature of the edges determines the curvature of the mask.

Abstract: A low power metal halide discharge lamp having an improved electrode structure. Two elongated electrodes fabricated of a doped tungsten each extend axially through a respective neck of a bulb into an arc chamber. Each of electrode comprises a lead-in wire having a diameter ranging between about 0.003 to 0.018 inches that enters the arc chamber. A post member is mounted on the lead-in wire, out of contact with the associated neck, and is preferably welded to the lead-in. The post member has a flat distal surface for transferring heat to vapors in said arc chamber. It is larger in diameter than its associated lead-in wire, and has a diameter in a range of 0.005 to 0.040 inches. The flat distal surfaces of the two post members face one another in spaced apart relationship, the space therebetween forming an arc gap.

Abstract: Disclosed is an electrodeless, low pressure gas discharge lamp. The lamp includes a vitreous envelope containing a metal vapor and an inert gas. The envelope is shaped with an external chamber for receiving an electrical excitation circuit. The excitation circuit is effective for exciting the metal vapor to emit light with electromagnetic fields that are passed through the vitreous envelope from outside, to inside, the envelope. A circuit supplies electrical power from power mains to the excitation circuit. A transparent, electrically conductive coating is disposed on the inner surface of the vitreous envelope for suppressing electromagnetic interference on the power mains. An electrically conductive coating is disposed on the outer surface of the vitreous envelope; it is capacitively coupled to the inner conductive coating, via a wall of the vitreous envelope, and is maintained at a suitable potential for suppressing electromagnetic interference on the power mains.

Abstract: An electrophoretic suspension prepared in accordance with the present invention comprises a dielectric fluid having suspended therein a plurality of pigment particles movable between the electrodes of an EPID device in response to an electric potential applied thereto and an effective amount of at least one additive for chemically absorbing at least one gas in the fluid. To absorb hydrogen gas in the dielectric fluid, a hydrogen absorbing additive is dispersed therein. The molecule of the hydrogen absorbing additive has an aromatic C/H ratio of 1/0.8 or less, and preferably between 1/0.67 and 1/0.75. To absorb chlorine gas in the dielectric fluid, an effective amount of an chlorine gas absorbing compound is also preferably added thereto. The chlorine gas absorbing additive comprises a molecule having at least one double bond and may be a sterically strained alkene such 5-ethylidene-2-norbornene.

Abstract: An electric lamp having a light source capsule with a generally planar press seal, having two opposing major faces and two minor faces extending therebetween, includes an improved support strap for securing the seal to a frame support rod. The support strap includes a stiffly resilient strip of metal having two spaced and opposing major leg portions each extending in contact with a respective major seal face, an elastically deformable jaw portion substantially not in contact with a seal face, and end portions fixed to each other adjacent one of the seal faces. The elastically deformable portion is arranged such that with the strap end portions fixed to each other it is elastically deformed and firmly biases other portions of the support strap against at least two of the seal faces for holding the seal therebetween.

Abstract: The electrodeless low pressure sodium vapour discharge lamp which has a discharge vessel (1) containing sodium vapour and inert gas. The discharge vessel (1) has an enveloping part (10) and connected therewith at a first end of the discharge vessel (1) a sunken part (20). In the sunken part (20) is a body (30) of soft-magnetic material which is surrounded by an electric coil (31). The discharge vessel (1) is enclosed in an outer bulb (40). The inner surface (2) of the discharge vessel (1) has a layer (4) of borate glass. The borate glass which covers the sunken part (20), is sintered. The invention renders it possible to make parts of construction glass which have a layer of borate glass at an outer surface.

Abstract: The invention relates to a sealing composition suitable for bonding yttria or alumina ceramic members, or bonding refractory metals to the ceramics. The sealing composition has, in mole percent, about 0.5 to 40 percent yttria, about 45 to 65 percent alumina, up to 10 mole percent strontia, and the balance substantially calcia.

Abstract: An imaging device comprising a vacuum vessel, an electron source arranged in the vessel and a solid-state image sensor arranged to receive signal electrons emitted from the electron source. The solid-state image sensor comprises a charge transferring device, picture element electrodes, an electron multiplier layer, and a surface electrode layer. The picture element electrodes are connected to the charge transferring device and cover the major part of this device. The surface electrode layer and the electron multiplier layer are stacked on the picture element electrodes. The surface electrode layer formed on the electron multiplier layer transmits the incident signal electrons to the electron multiplier layer.