Abstract:
The invention relates to a light source (1) with a discharge vessel (2) which is filled with a filling gas, and with an electron beam source (4) arranged in vacuum or in a region of low pressure, which source (4) generates electrons (12) and propels them through an inlet foil (8) into the discharge vessel (2). According to the invention, the inlet foil (8) comprises a diamond layer.
Abstract:
An electron emitter has an emitter made of a dielectric material, and an upper electrode and a lower electrode to which a drive voltage is applied to emit electrons. The upper electrode is formed on a first surface of the substance serving as the emitter, and the lower electrode is formed on a second surface of the substance serving as the emitter. The upper electrode has a plurality of through regions through which the emitter is exposed. The upper electrode has a surface which faces the emitter in peripheral portions of the through regions and which is spaced from the emitter.
Abstract:
An electron emitter (2) has a semiconductor substrate (20) doped with an n-type region (21). A diamond layer (24) is doped by ion implantation with a p-type dopant to form a graded dopant profile region (27) that increases away from the upper surface of the diamond layer (24) and a thin insulating region (28) separating the p-type region (27) from the n-type region (21). The emitter (2) has a first electrical contact (23) on a lower surface of the substrate (20) and a second electrical contact (25) on the upper surface of the diamond layer (24) such that a voltage can be applied across the emitter (2) to cause tunneling of electrons from the n-type region (21) through the insulating region (28) into the p-type region (27), causing emission of electrons from an exposed surface (29). A lamp or display (1) includes several such electron emitters (2) and contains gas at reduced pressure, which is ionized by the emitted electrons, thereby generating UV radiation, which causes a fluorescent layer (5) on a transparent window (3) to produce visible light.
Abstract:
Electroconductive frit includes glass (14) having a low melting point and a filler of fine glass particles (12) coated on the surface with metal(13). The electroconductive frit is used for bonding a spacer to an electron source substrate and a face plate in an image-forming apparatus to ensure mechanical securing strength and electrical connection.
Abstract:
A fluorescent display device including a laterally elongated matrix-like display section and a plurality of control electrodes arranged in juxtaposition to each other while a longitudinal direction thereof is defined in a short side direction of the display section is disclosed which is capable of increasing a duty ratio when scanning the control electrodes. A plurality of picture cells are arranged longitudinally and laterally at equal intervals, resulting in forming the matrix-like display section. A plurality of sets of picture cells in an oblique direction are connected together. The control electrodes are connected together at every predetermined interval. Thus, when the control electrodes are scanned and the anode conductors are fed with a display signal, the fluorescent display device carries out graphic display while selecting desired picture cells at a high duty ratio.
Abstract:
A cathodoluminescent lamp in the form of a vacuum diode or triode uses a self-supporting YAG crystal as the light emitter. The crystal shape can be selected (spherical, slab, bar) for desired effect and light trapping is turned to advantage by selectively coating the crystal surface to provide for preferential light emission.
Abstract:
A lead-tin-bismuth alloy is disposed within a solenoidal electric field lamp to control the mercury vapor pressure. In accordance with one embodiment of the present invention, the alloy is placed within the tip-off region of the lamp envelope. The alloy is fixed within the tip-off region by a means of wetting the alloy to a metal wire structure such as a helix or a cylindrical screen. Alternatively, the alloy may be placed on an interior surface of the envelope by first wetting the glass with a layer of indium or other metallic wetting agent. Additionally, methods for wetting the lead-tin-bismuth alloy to the metal wire include firing the alloy in contact with the wire in a hydrogen atmosphere at a sufficiently high temperature to wet the alloy to the wire. The present invention permits the control of mercury vapor pressure in solenoidal electric field discharge lamps.
Abstract:
There is disclosed a display pattern for fluorescent display apparatus which effects displays of several sorts of informations in different colors or different luminance brightness. The display pattern is composed of seven segmented anodes each of which is divided into a plurality sub-segments which are classified into at least two groups electrically connected in common and extended to external terminals so that the different informations may be displayed in the respective groups of the segments.
Abstract:
A lead-tin-bismuth alloy is disposed within a solenoidal electric field lamp to control the mercury vapor pressure. In accordance with one embodiment of the present invention, the alloy is placed within the tip-off region of the lamp envelope. The alloy is fixed within the tip-off region by a means of wetting the alloy to a metal wire structure such as a helix or a cylindrical screen. Alternatively, the alloy may be placed on an interior surface of the envelope by first wetting the glass with a layer of indium. Additionally, methods for wetting the lead-tin-bismuth alloy to the metal wire include firing the alloy in contact with the wire in a hydrogen atmosphere at a sufficiently high temperature to wet the alloy to the wire. The present invention permits the control of mercury vapor pressure in solenoidal electric field discharge lamps.
Abstract:
A fluorescent display has phosphor coated electrodes selectably electronically excited into an illuminated condition. A foraminous screen controls illumination of the electrodes. An embodiment of the invention with a linear array of anodes and an analog-to-digital power supply forms a linear scale indicator. A method of assembly is also disclosed.