Abstract:
A flat luminescence lamp includes a first substrate having a first surface and a second surface, a second substrate having a first surface disposed facing opposite to the first surface of the first substrate, a first luminescence layer formed on the first surface of the first substrate, a second luminescence layer formed on the first surface of the second substrate, and a plurality of grooves formed on the second surface of the first substrate.
Abstract:
A flat luminescence lamp includes a first substrate having a first surface and a second surface, a second substrate having a first surface disposed facing opposite to the first surface of the first substrate, a first luminescence layer formed on the first surface of the first substrate, a second luminescence layer formed on the first surface of the second substrate, and a plurality of grooves formed on the second surface of the first substrate.
Abstract:
A neon discharge lamp provided with a powder coating with an appropriate particle size of used powder, is applied on an inner surface of a tubular bulb to the extent nearly equal to or more the length of an electrode portion, along the longitudinal axis of said tubular bulb. The phenomenon of neon gas being encompassed by way of cathode sputtering is prevented and the shortened operating life of the neon discharge lamp of this kind by way of cathode sputtering is also prevented.
Abstract:
An illumination device includes a cold cathode fluorescent tube having a heat capacity of 0.035 Wsec/.degree. C. or less per unit length (1 cm) of a glass tube of a fluorescent section of the cold cathode fluorescent tube. The illumination device has a superior operation characteristic at a low temperature. The device is driven by a method and is implemented in a display device.
Abstract:
A meander-shaped low-pressure mercury discharge lamp with cold electrodes (7, 8), in particular for use in an illumination panel for a liquid crystal display. The geometry of the tubular lamp vessel (1) bent into a meander shape is so chosen, for obtaining a good homogeneity of the luminance and a high luminous efficacy, that the length of the discharge path is between 250 and 1000 times the internal diameter of the lamp vessel (1). The internal diameter of the lamp vessel (1) preferably has a value of between 2.0 and 3.5 mm.
Abstract:
Composite sintered electrodes with improved properties that make them suitable for use in a variety of lamp types, are provided which comprise a refractory metal and a substantial amount of a refractory emitter oxide, either single layer or multiple layer, the composites having been subjected to sintering at an elevated temperature effective to form a composite electrode having a density of at least 85%, preferably in the presence of a sintering activator, such as for example, Ni, or mixture thereof with a sintering aid such as, for example, Li.sub.2 O.
Abstract:
A cold-cathode fluorescent lamp includes an opposing pair of electrodes in spaced relationship in a tubular glass bulb of which the inner wall surface is coated with fluorescent material, and each of the electrodes is divided into four plate-like electrode members each having mercury and getter preliminarily coated thereon while maintaining a necessary area for each electrode without any contact with the inner wall surface of the tubular glass bulb. The opposite ends of the tubular glass bulb are airtightly sealed with beads through which electricity feeding wires extend for feeding electricity to the electrodes while holding the electrodes in the tubular glass bulb. Two of the four plate-like electrode members are located on one side of each electricity feeding wire, while another two of the same are located on the opposite side of the same. The respective plate-like electrode members are spot-welded to each electricity feeding wire. With this construction, the length of each electrode as measured in the axial direction of the tubular glass bulb can be shortened, and moreover, the length of a non-illuminating part of the cold-cathode fluorescent lamp can also be shortened. Consequently, the whole length of the foregoing type of cold-cathode fluorescent lamp can be shortened. Each of the electricity feeding wires may fully be composed of a Dumet wire.
Abstract:
A planar fluorescent and electroluminescent lamp having two pairs of electrodes. Planar electrodes on an outer surface of the lamp create a plasma arc by capacitive coupling. The planar electrodes also cause embedded phosphor to emit light on the electroluminescent phenomena. In one embodiment, a second chamber is on top of the first chamber and light passes from a primary chamber through the second chamber, and is emitted by the lamp.
Abstract:
Electrodes 11 and 12 in a cold-cathode discharge lamp have a row of holes 13 arranged side-by-side along their length. The holes are formed by laser machining and extend at an angle of between about 25.degree. and 35.degree. to the normal, the holes in the two electrodes being oppositely inclined.
Abstract:
This invention provides for a light emitting device which comprises an envelope of electrically insulative material which defines within its boundaries an ionization chamber. A noble gas is disposed within the chamber and two spaced electrodes are located on the light emitting device such that the electrodes are in electrical communication with the interior of the chamber. At least one conductive member is disposed on the device and arranged to define a tortuous path between the two electrodes but without providing a direct electrical connection between the two electrodes. When a high frequency alternating voltage is applied to the electrodes the electrical interaction between the electrodes and the conductive member causes an ionization path between the electrodes to substantially follow the tortuous path.