Abstract: A large-area electroluminescent (EL) faceplate for storage CRT is described. The EL faceplate has a non-planar mesh structure which includes individual current limiting resistance between a power source and an array of small-area active regions for improving the faceplate breakdown characteristics. The mesh, which comprises high conductivity strips and delivers power to the active regions, is substantially reduced in area relative to a simple conventional device, and is disposed on thick dielectric nonactive regions to further reduce the possibility of catastrophic breakdown.

Abstract: CRT (cathode-ray tube) comprises an evacuated glass envelope, an electron-gun mount assembly housed in the envelope, the electrodes of said envelope being confined by closely-spaced glass surfaces, and a smooth, electrically-conductive coating of tin oxide on said glass surfaces opposite electrodes of said mount assembly. The electrically-conductive coating is electrically floating and, preferably, is a substantially-continuous circumferential band on the inner surface of the neck of the CRT.

Abstract: A television tube having an electron gun and an aperture mask with a plurality of line of sight openings in the aperture mask wherein the line of sight openings in the aperture mask are partially defined by material on the cone side surface of the aperture mask and partially defined by material on the grade side surface of the aperture mask with the aperture opening size and shape varying in accordance with the position of the opening in the aperture mask. Two techniques known as the capital I and capital H resist layout techniques are taught to illustrate the formation of the aperture mask.

Abstract: In-line electron gun structure for color cathode ray tubes in which the final focussing and accelerating electrodes each employ three in-line tapered, partially overlapping apertures in facing relationship, and at least one pair of electron beam spot-shaping inserts associated with the central aperture of the focussing electrode.

Abstract: This invention relates to improved CRT internal magnetic shielding means in the form of at least two one-piece substantially longitudinal open trough-like metallic shielding members of arcuate cross-sectional construction having closed rounded ends. Each member incorporates strengthening features and is free of constructional jointures. The members are attached to the rear of the supporting frame of the screen-related apertured member, being oriented at the top and bottom thereof with their longitudinal openings in facing relationship.

Abstract: A gas discharge display/memory device is shown wherein the discharge is selectively and advantageously controlled, particularly for increased light output and panel brightness. The device comprises an ionizable gaseous medium in a thin gas chamber between a pair of opposed dielectric charge storage member, each member backed by an array of electrodes with each array oriented relative to the other so as to form a multiplicity of gas discharge cells. Both opposing storage surfaces of each cell are coated with a first layer of low electron yield material and a second layer of high electron yield material--in the geometric form of dots, lines, strips, etc.--the second layer being appropriately positioned such that it is surrounded by the first layer of low electron yield material and such that two opposing surfaces of high electron yield material at or near a discharge cell site cause the cell discharge to occur at the pair of opposing surfaces of high electron yield material.

Abstract: A dispersion type electroluminescent element comprising dielectric, which is liquid at -20.degree. to +60.degree. C. and has a dielectric constant of 30-80, a gelling agent, and an electroluminescent phosphor, when used as an electroluminescent layer, has a practical brightness, which is never lowered for a long time, and has less disturbance to the electroluminescent surface.

Abstract: A cathode filament formed from a thin metal wire wound into a helical spiral is welded at its two ends to connection braces by means of a high energy beam such as a laser beam. By increasing the pitch of at least one of the turns near each of the two ends, welding is confined to a predefined number of turns and uniformly welded cathodes are obtained having filament resistances which differ by less than 1%.

Abstract: A dispenser for supplying metal vapor to an ion source. The metal is provided in a capsule which may be broken to release the metal by turning a knob which causes a capsule housing to move to the right, thus causing the capsule to break against a piston member. The piston member communicates with a conduit which in turn communicates with the associated ion source, partly shown in the drawing. A heating mantle is provided to vaporize the metal in the housing so that it can pass from the dispenser through a conduit, to the ion source.

Abstract: A flat panel display apparatus is disclosed which includes first and second insulating plates at least one of which is transparent, a first plurality of parallel electrodes mounted on one surface of the first plate, a second plurality of parallel electrodes mounted on one surface of the second plate to intersect at a predetermined angle to the first electrodes, the first electrodes being spaced with and opposed to the second electrodes to define a cross conductor matrix for locating glowing regions, and a plurality of parallel insulating barriers mounted on at least one surface of the first plate so as to extend in parallel with the first electrodes and project toward the second plate, the barriers having the same pattern, pitch and width as that of the first electrodes, and each of the barriers overlapping the respective one side edge portion of one of the first electrodes, and the first and second plates being joined together with their outer edges sealed and gas capable of glowing mounted between the plate

Abstract: A spark plug for spark ignition type internal combustion engines includes an earth electrode formed of a heat-resisting metal, a central electrode, and a supplementary electrode provided on the earth electrode or the tip end of the central electrode. The supplementary electrode cooperates with one of the other electrodes to define therebetween a spark gap which is smaller in dimension than the normal spark gap defined between the earth and central electrodes. The supplementary electrode has a higher specific resistance than that of the earth electrode.

Abstract: An electron gun comprises at least one cathode for generating an electron beam along a beam path and a plurality of electrodes serially disposed along the beam path. The electrodes include at least one accelerating and focusing electrode having two spaced-apart electrode sections axially separated along a plane substantially perpendicular to the beam path. An arc-suppression resistor interconnects the spaced-apart electrode sections of the electrode. The interconnected electrode sections normally operate at substantially the same voltage. The arc-suppression resistor acts in the event of an arc to limit the arc current and prevent damaging cascading arcs.

Abstract: The novel CRT is similar in structure to prior art CRT's except for the color-selection structure, which, as in the prior CRT's is for producing a plurality of lenses for passing and focusing portions of electron beams to associated color groups of the target. In the novel CRT, the color-selection structure comprises at least one lenticular member having therein an array of windows associated with only one color group, each window having a half-width, r, and a conductive mesh having interstitial dimensions small compared to the phosphor elements in the color groups. The lenticular member is longitudinally spaced a distance, s, from the conductive mesh so that the ratio of the longitudinal spacing, s, to the half-width, r, of the window is much less than unity (s/r<<1), so that the lenticular member and the conductive mesh provide a strong lens action.

Abstract: An electron gun for a high resolution color display tube comprises three inline cathode assemblies, a control grid with three inline apertures, a screen grid with three inline apertures and slots at each aperture on a side facing away from the control grid, a first focusing electrode having three inline apertures facing the screen grid and three inline apertures facing away from the screen grid, and a second focusing electrode having three inline apertures facing the first focusing electrode. The diameters of the control grid apertures are in the range of 0.43 mm to 0.59 mm. The screen grid is spaced 0.13 mm to 0.26 mm from the control grid. The diameters of the screen grid apertures are in the range of 0.43 mm to 0.59 mm, and their thickness is in the range of 0.20 mm to 0.31 mm. The ratio of the depth of the slots in the screen grid to their widths is in the range of 0.13 to 0.23. The diameters of the apertures in the facing portions of both focusing electrodes are in the range of 4.06 mm to 5.

Abstract: A cathode-ray tube having an electron gun includes at least one cathode assembly comprising a tubular cathode sleeve, a heater filament disposed within the sleeve and a novel cathode eyelet coaxially surrounding at least a portion of the cathode sleeve and attached thereto. The cathode sleeve has oppositely disposed ends, one end being open and the other end being closed by a cap having an electron emitting coating thereon. The novel eyelet comprises a laminated bimetal member including a support layer and an emissivity modifying layer. The support layer has a distal end, a proximal end and a central portion therebetween. The proximal end of the support layer is attached to the open end of the cathode sleeve. The emissivity modifying layer is disposed on at least a portion of the interior surface of the central portion of the support layer to reduce radiation loss from the cathode sleeve and cap.

Abstract: An electron beam injection structure for flat panel display device includes electron injection electrodes which span a beam guide assembly for propagating electron beams. One end of the electron injection electrodes is in closer proximity to the cathode than the corresponding end of the beam guide structure. The injection of electrons from the cathode to the beam guide structure therefore can be maximized by increasing the voltage on the electron injection electrodes while permitting changes in the operating voltages applied to the beam guide structure and other elements of the display device.

Abstract: An inline electron gun in a color picture tube is improved by the addition of two slots that are spaced sufficiently close to and inward from the two apertures in a portion of the screen grid electrode facing an accelerating and focusing electrode. The slots cause a distortion of the electrostatic field formed between the two electrodes at the two apertures. The field distortion compensates for an opposite distortion within the main lens of the electron gun.

Abstract: The invention relates to internal magnetic shielding means for a cathode ray tube using a spun-funnel envelope portion. The sidewall of the shielding structure is of discretely shaped contour to provide a desired spatial compatibility with at least portions of a projecting glass ridge on the interior surface of the funnel.

Abstract: An ignition plug provided with a tubular center electrode through which open air is introduced into the engine cylinder to accelerate exhaust of the combustion gas from the cylinder in the exhaust stroke of an engine cycle. The tubular electrode has a double-check valve fitted therein to prevent leakage of the high-pressure gas from the cylinder when the cylinder pressure is above the ambient pressure. The valve is composed of two differently-weighted floats serially disposed in the center electrode, one of the floats being in operative position even if the other resonates with engine vibration.

Abstract: In a fluorescent lamp of the type in which a lamp envelope comprises an outer bulb having generally a spherical or a partially spherical or a cylindrical configuration and an inner bulb inserted into the outer bulb in predetermined nested relationship; either of the inner surface of the outer bulb or the outer surface of the inner bulb is formed with a groove which defines a zig-zag discharge path between the outer and inner bulbs; a phosphor is formed at least over the wall surfaces of the groove; electrodes are disposed at the ends, respectively, of the discharge path and a uv (ultraviolet) radiation-emitting discharge gas consisting of mercury vapor and a rare gas or a rare gas mixture is filled in the discharge path, both the open end portions of the outer and inner bulbs are flared radially outwardly and inwardly respectively, or either of the open end portion of the outer or inner bulb is flared radially outwardly or inwardly so that glass frit can be filled into the annular space defined between the op