Abstract:
A PALC display panel has a cathode including a conductive core, a protective coating of a material that is electrically conductive and is non-reactive with hydrogen, and an outer coating of refractory material, and an anode having a surface of a material that is electrically conductive and is non-reactive with hydrogen.
Abstract:
A high pressure discharge lamp with a thermally improved anode, as well as a method of making such a lamp, are disclosed. The lamp includes a refractory arc tube with a hermetically sealed arc chamber, a fill in the arc chamber for facilitating light generation, and an anode and a cathode extending into the hermetically sealed arc chamber and being spaced apart from each other. The anode comprises a shank of refractory metal, a cylindrically shaped refractory metal sleeve on a portion of the shank, and an end proximally facing the cathode. The anode end comprises a substantially solid mass of refractory metal, and is integrally joined to both the shank and the metal sleeve to facilitate heat flow from the anode end to the shank and sleeve. The anode end preferably is generally shaped as a hemisphere facing the cathode. The refractory metal sleeve is preferably one or more layers of a helically wound refractory metal wire having an outer diameter more than twice a diameter of the shank.
Abstract:
In a fluorescent display tube of the back luminescence type, a transparent colored film is formed on a transparent substrate. A mesh shaped anode segments are formed on the transparent colored film, and a fluorescent layer is formed to cover the anode segments.
Abstract:
According to one embodiment, a switch device includes a container configured to house a gas, a cathode located in the container, a first anode located in the container, and a second anode located in the container. A second direction from the cathode toward the second anode crosses a first direction from the cathode toward the first anode. A second distance between the cathode and the second anode is greater than a first distance between the cathode and the first anode.
Abstract:
The invention provides a laser arrangement including in its discharge circuit a switching thyratron which is capable of conduction normally in one direction and protectively in the reverse direction. The thyratron has an anode formed as a hollow body which is adapted to retain plasma generated during a pulse of forward conduction so that the anode is provided to act as a cathode permitting protective reversal of the thyratron when this is subject to reversal of voltage.
Abstract:
The invention concerns thyratrons and in particular thyratrons which are required to be able to conduct protectively in a reverse direction. In order to assist in such reverse conduction an electrode which at such times acts as a cathode e.g. a conventional anode is formed or includes material of low work function such as tungsten impregnated with barium aluminate. Where the electrode in question is a plate anode the disc or plate is itself formed of the low work function material. Where the anode is a so-called hollow anode material of low work function may be introduced within the interior of the hollow anode. Where the anode electrode is in the well known form of an inverted cup material of low work function may be provided as a layer on the surface thereof facing the cathode.
Abstract:
An indicator discharge tube having an insulating base plate with a plurality of grooves of predetermined shapes formed therein at predetermined locations, an anode electrode disposed opposite the insulating base plate, a plurality of cathode electrodes respectively disposed in the grooves of the insulating base plate, one portion of the anode electrode lying between adjacent cathode electrodes, and a tube having enclosed therein the insulating base plate, the anode electrode and the cathode electrodes in an airtight manner.
Abstract:
According to one embodiment, a switch device includes a container configured to house a gas, a cathode located in the container, a first anode located in the container, and a second anode located in the container. A second direction from the cathode toward the second anode crosses a first direction from the cathode toward the first anode. A second distance between the cathode and the second anode is greater than a first distance between the cathode and the first anode.