Abstract: An arrangement for mounting a shadow mask, or color selection electrode, in the glass envelope of a color cathode ray tube (CRT) includes four resilient metal holders, each spot welded to a respective upper, lower or lateral portion of the shadow mask's skirt. Each holder is formed from a unitary metal strip which is shaped so as to include an inner mounting portion spot welded to the mask's skirt and an outer apertured portion adapted to receive a stud attached to and extending inwardly from the CRT's glass envelope. The shadow mask undergoes thermal deformation, or doming, when heated by electron beams incident thereon and transfers heat to each of the metallic holders. Each of the metallic holders, in turn, undergoes thermal deformation, but because of the shape and orientation of the holders relative to the shadow mask, the four holders deflect the shadow mask in a direction generally perpendicular to and outward from the CRT's glass display screen, i.e., along the CRT's Z-axis.

Abstract: A plasma addressing display device of the present invention includes: a plasma addressing substrate; a color filter substrate; and a display medium layer interposed between the plasma addressing substrate and the color filter substrate is provided. The plasma addressing substrate includes: a first substrate; a dielectric sheet provided near the display medium layer; a plurality of electrode lines provided at regular intervals on the first substrate; a plurality of partition walls provided respectively on the plurality of electrode lines; and a plurality of strip plasma discharge channels each enclosed by the first substrate, the dielectric sheet and the partition walls. The color filter substrate includes: a second substrate; a color filter layer provided on the second substrate; a plurality of strip electrodes provided on the color filter layer so as to extend in a direction orthogonal to the plurality of strip plasma discharge channels.

Abstract: A method and apparatus for securing a deflection yoke onto a cathode ray tube includes forming pockets having deformable, resilient inner walls along a circumferential surface of the deflection yoke. When the deflection yoke is mounted on the cathode ray tube, the inner walls deform slightly to conform to a contact portion of the cathode ray tube. The position of the deflection yoke with respect to the cathode ray tube it then adjusted into proper alignment. Once the deflection yoke and cathode ray tube are properly aligned, fast curing epoxy is poured into each of the plastic pockets, wedging the deflection yoke permanently into its desired orientation on the cathode ray tube. The pockets can either be integrally formed with the deflection yoke or they can be manufactured and attached to the deflection yoke in a separate operation.

Abstract: An electron tube cathode comprises a base (1) formed mainly of nickel, an alloy layer (4) disposed on the base (1) and including nickel and tungsten having a grain size smaller than that of the base, and an electron emissive material layer (5) deposited on the alloy layer, and including an oxide (6) of an alkaline-earth metal containing at least barium, and a rare earth metal oxide (7) of 0.01 to 25 weight percent and containing at least one of scandium oxide and yttrium oxide. The cathode has a life characteristics improved compared with the prior art, even if operated with a current density of 3 A/cm.sup.2 or more.

Abstract: A pair of first magnetic bodies extending in a direction of an X-axis are so disposed as to be opposed to each other on the X-axis in order to shield an external magnetic field acting on three electron beams lined side by side in the direction of X-axis. A pair of arcuated second magnetic bodies are disposed symmetric with respect to the X-axis in the vicinity of a Y-axis at a predetermined distance from a ring-shaped six-pole magnet plate. The first magnetic bodies, second magnetic bodies and six-pole magnet plate are arranged in this positional relationship, whereby a predetermined magnetic field distribution is created. Cathodes of an electron gun structure are arranged in such a position that a sum of a positive magnetic field component is substantially equal to a sum of.the negative magnetic field component on the trajectory of a center beam.

Abstract: A color cathode ray tube includes a generally rectangular shadow mask having a curved apertured portion having a multiplicity of electron-transmissive apertures, a curved imperforate portion surrounding and integral with the apertured portion and a skirt portion bent back from a periphery of the curved imperforate portion, and a generally rectangular support frame for suspending the shadow mask by spot welding the skirt portion thereto, within a panel portion of the color cathode ray tube. The skirt portion is provided with a plurality of slits extending in a direction of a height of the skirt portion and a plurality of embossments extending in the direction of the height of the skirt portion, and the slits and the embossments are juxtaposed around a circumference of the skirt portion.

Abstract: A color cathode ray tube includes a three-beam in-line type electron gun. The main lens section includes a focus electrode and an anode facing the focus electrode, each of the focus electrode and the anode has an electrode having a single opening common for three electron beams in an end thereof facing each other and a plate electrode disposed therein and having beam apertures. The focus electrode and the anode satisfy a following inequality:(A+566)/106>H-2.times.Swhere A is V1.times.V2.times.T, V1 is a vertical diameter of the single opening, V2 is a vertical diameter of a center one of the beam apertures and T is an axial distance between the single opening and the plate electrode, H is a horizontal diameter of the single opening, S is P.times.

Abstract: Cathodoluminescent field emission display devices feature phosphor biasing, amplification material layers for secondary electron emissions, oxide secondary emission enhancement layers, and ion barrier layers of silicon nitride, to provide high-efficiency, high-brightness field emission displays with improved operating characteristics and durability. The amplification materials include copper-barium, copper-beryllium, gold-barium, gold-calcium, silver-magnesium and tungsten-barium-gold, and other high amplification factor materials fashioned to produce high-level secondary electron emissions within a field emission display device. For enhanced secondary electron emissions, an amplification material layer can be coated with a near mono-molecular film consisting essentially of an oxide of barium, beryllium, calcium, magnesium or strontium.

Abstract: The present invention relates to a flat display screen anode of the type including at least two sets of parallel alternate strips of anode conductors coated with phosphor elements and separated from one another by insulating strips, and focusing conductive strips, aligned and substantially centered with the insulating strips, the focusing conductive strips having lower widths than the insulating strips.

Abstract: The present invention provides an inexpensive cathode ray tube envelope which suffers considerably diminished glass browning in comparison with traditional cathode ray tube envelopes. The method of reducing glass browning in cathode ray tubes, and a suitable glass composite and glass composition are also provided. The cathode ray tube envelope of the present invention includes a screen which has an inner and an outer glass layers. The inner layer is made of lead-free glass whereas the outer layer is made of lead-containing glass. In the operational cathode ray tube of the present invention, the electron beams emitted therein, are absorbed by the inner layer without substantial browning, since the inner layer does not contain material that cause browning, and do not penetrate to the lead-containing outer layer. At the same time, the X-rays produced in the cathode ray tube are effectively and efficiently blocked by the lead-containing outer layer.

Abstract: An electrodeless discharge lamp comprises a sealed discharge vessel containing a fill capable of sustaining a discharge when suitably energized, and circuitry for energizing a solenoid to produce an RF electromagnetic field in the vessel to energize the fill. A light transmissive, inherently conductive, polymer layer is provided on the exterior of the discharge vessel for confining the RF field within the lamp. An outer, insulating layer may also be provided over the conductive layer.

Abstract: The optical element (29) comprises a substrate (28) provided with a light-transmitting layer (20) whose transmission in the visible range varies in response to a variation in light. The optical element (29) is characterized in that an anti-reflective layer (21) is provided between the substrate (28) and the light-transmitting layer (20), the refractive index of said anti-reflective layer preferably ranging from 1.5 to 2.2. The light-transmitting layer (20) may further be provided, on a side of the light-transmitting layer (20) facing away from the substrate, with a further anti-reflective layer (22) having a refractive index which preferably ranges between 1.3 and 1.6. The light-transmitting layer may comprise an electrochromic element (20) as well as a photochromic element. The optical element (29) is preferably provided on the outside of the display window (28) of a display device.

Abstract: A color cathode ray tube includes a phosphor screen, a shadow mask closely spaced from the phosphor screen and an electron gun. The electron gun includes three cathodes for emitting three in-line electron beams and a plurality of electrodes each having electron beam apertures for passing the electron beams, the electrodes are fixed in a predetermined axially spaced relationship on insulating supports, at least one of the electrodes is cup-shaped and has a correction plate electrode therein welded thereto, and edges of the correction plate electrode are formed with recesses and have sloped portions extending in a direction away from the recesses toward an inner wall of the electrode containing the correction plate electrode.

Abstract: A vacuum field emitter device is manufactured by assembling elements of the device, including at least one getter, under a vacuum or a controlled atmosphere. The assembly step includes a step in which elements are positioned, an oven drying step and a device sealing step. Each getter is hydrogenated after the oven drying. The manufacturing process has applications in the manufacture of television screens.

Abstract: An electroluminescent device in accordance with the present invention includes a plurality of pixel electrodes disposed on a dielectric layer and coupled to control circuitry. An electroluminescent stack and a transparent electrode are included wherein the electroluminescent stack is disposed between the transparent electrode and the plurality of pixel electrodes. A plurality of guides are disposed between each of the pixel electrodes for guiding light from the electroluminescent stack when the pixel electrodes are activated by the control circuitry and reducing internal reflections of light within the electroluminescent stack. Another device and method include a dielectric layer disposed between the pixel electrodes for absorbing light and reducing a threshold voltage of the stack.

Abstract: The white light emitting diode comprising a light emitting component using a semiconductor as a light emitting layer and a phosphor which absorbs a part of light emitted by the light emitting component and emits light of wavelength different from that of the absorbed light, wherein the light emitting layer of the light emitting component is a nitride compound semiconductor and the phosphor contains garnet fluorescent material activated with cerium which contains at least one element selected from the group consisting of Y, Lu, Sc, La, Gd and Sm, and at least one element selected from the group consisting of Al, Ga and In and, and is subject to less deterioration of emission characteristic even when used with high luminance for a long period of time.

Abstract: There is disclosed a three draw technique for drawing optical fibers into various cross-sectional shapes. The process employs a glass tube and rod which are fed into a heated furnace. The viscosity of the glass decreases and the glass flows. The glass is pulled or drawn out of the furnace at a different rate than it is fed into the furnace. The resultant drawn fibers are stacked and the process is repeated two more times. By employing three drawing steps one can achieve extremely small fiber faces. The final draw step uses a hexagonal cross-section preform and fibers. From the first drawn fibers three geometrical shapes can be assembled and finally drawn into hexagonal shapes with round fibers which are triangles, rhombohedrials and half hex or trapezoidal shapes. These shapes maintain the hexagonal closely packed space providing the highest density per cross-section. With this high density there is less glass flowing to fill voids thereby reducing distortion within the fabricated MCP.

Abstract: A channel subassembly for a PALC display panel comprises a channel member having spaced, substantially parallel, linear channels in its upper surface and a cover sheet (6) attached to the channel member. Islands of transparent conductive material are disposed in a row on a surface of the cover sheet over each channel. The islands in each row are spaced apart along the channel over which they are disposed and are bounded in directions perpendicular to the length of the channel such that they do not extend laterally substantially beyond the channel.

Abstract: The purpose of the present invention is to provide an organic electroluminescent element having uniform surface luminescence, large luminescence intensity, and excellent stability over repeated use. The present invention provides a method of manufacturing an organic electroluminescent element using a positive electrode irradiated by excimer light when manufacturing an organic electroluminescent element comprising at least a substrate on which is sequentially formed a positive electrode, organic layer including an organic luminescent layer, and negative electrode, and an organic electroluminescent element manufactured by said method.

Abstract: A method for manufacturing a triode field emission display device. First a predetermined pattern of cathode electrode is formed on a supporting substrate. A predetermined pattern of graphite layer is formed on the cathode electrode. An insulating layer is formed around the cathode electrode on the supporting substrate. A protecting resin layer is coated and hardened on the graphite layer. A predetermined pattern of grid is formed on the insulating layer. Finally, The protecting resin layer is thermally decomposed such that a distance between an inner circumference of the grid and an outer circumference of the graphite layer maintains constantly.