A method for producing a gas discharge again administration device

摘要

1,244,306. Glow discharge lamps. MULLARD Ltd. 29 Aug., 1968 [11 Oct., 1967], No. 46406/67. Heading H1D. A glow discharge device for displaying diagrams, numerals, and words for example, comprises a two-dimensional array of sheet material cathode electrodes 1 each at the closed end of individual gas-filled cavities 4 in insulating material which is moulded around the cathodes and part of supply conductors for same, which latter are also of sheet material and integral with the cathodes, the device including an anode 6 or anodes facing and spaced from the open ends of the cavities. The insulating material may be insulating plate 5, the spacer of Fig. 1e and block 2, which are moulded in one piece around cathodes 1 and connections to terminals 3, the spacer of Fig. le being of greater depth than the plate 5 thickness. In a method of manufacture, part of the sheet interconnecting the supply conductors, made from a common sheet of material, is present during moulding and subsequently removed. Block 2 may be of glass or ceramic, cathode and terminals obtained by etching a N i -Fe or Cr-Fe sheet, and anode 6 may be a perforated metal plate, fine wire mesh or tin oxide on a transparent substrate, an expanded plate or a plurality of anodes. Dimensions are disclosed, the cavities may be square in crosssection and filled with pure Ne or Ne with 2% argon at 150 Torr, and optical radiation may be from only the negative-glow portion. The device is initially aged by sputtering metal on the cavity walls, the spacing between anode and cavity open ends preventing short circuiting.