Abstract: Disclosed herein are a metal hydroxy carbonate nanoparticle-coated phosphor and a preparation method thereof. The phosphor coated with metal hydroxy carbonate nanoparticles exhibit improved thermal stability and an increased luminance lifespan, when applied to display devices, e.g., PDPs and lamps.

Abstract: The present invention provides a high-resolution color picture tube device with a decreased beam spot diameter. The color picture tube device has an electron gun including cathodes, a control electrode, an accelerating electrode, a G3 electrode, a first focusing electrode, a second focusing electrode, and a final accelerating electrode that are arranged in this order. A voltage applied to the G3 electrode is obtained by dividing with a resistor a voltage applied to the final accelerating electrode, and when an electron beam is a non-deflection state, a relationship represented as Va>Vg3>Vfoc2 is satisfied where Va, Vg3, and Vfoc2 denote voltages respectively applied to the final accelerating electrode, the G3 electrode and the second focusing electrode. Thereby, the G3 electrode is applied with a high voltage independently for forming a prefocus lens.

Abstract: An apparatus and method provides for installing an implosion panel on the image-display window of an image-display device. The apparatus includes means for spacing an implosion panel from the image-display window a predetermined distance to provide a cavity therebetween. The periphery of the cavity is sealed and uncured resin is introduced in a controlled manner into the cavity while exhausting the air from the cavity. The apparatus includes means for curing the resin to bond the implosion panel to the image-display window.

Abstract: An electron beam tube assembly has a pattern of conductors 20 at least partially provided by being deposited on a major surface of a face plate 16, of the tube 13, the conductors to extend from within the tube 13, at least to an edge 18 of the face plate spaced from the remainder of the tube, and at the edge providing a plurality of exposed, spaced apart ends 22, comprising electrodes, the opposite end of each conductor being coupled by resistive material 28 deposited on the tube to a conductive coating 26 also on the tube, the coating being maintained at a high positive potential with respect to the cathode, in response to the information signals, supplied to the electron beam deflection means 41 and/or to the electron beam modulation means 42, electrical discharges occur to mark an associated sheet 30 of material sensitive to electrical discharges each such electrical discharge being when the electron beam impinges on a conductor.

Abstract: A cathode ray tube having a face plate composed of a plurality of boron fibers which act as a charge transfer medium to make signals accessible from the outside of the tube for further manipulation and processing.

Abstract: A method for making a faceplate for an electrostatic printing tube involves the positioning of the faceplate at an angle with respect to a collimated light source so that the pins embedded within the faceplate act as a mask to provide shadowed areas which prevent positive photoresist on a transparent conductive coating adhered to a surface of the faceplate from being exposed to light. The photoresist exposed to light is removed and the conductive coating is etched except where the nonexposed photoresist is located thereby forming elongated conductive pads electrically connected to respective pins. The nonexposed photoresist is removed and the conductive pads are plated with a suitable secondary electron emissive material.

Abstract: The present invention relates to apparatus for generating electric signals. Basically, the disclosed apparatus comprises a cathode-ray-type tube wherein the electron-beam sweeps across an especially designed electron-receptor. By suitable design of the receptor in conjunction with the beam-deflecting signal, the disclosed apparatus generates many desired output signals.