Display device for liquid crystal watch

  • Inventors:
  • Assignees: Citizen Watch Co Ltd
  • Publication Date: September 11, 1979
  • Publication Number: JP-S54116970-A


PURPOSE: To provide a safe and satisfactory illuminating source for a liquid crystal display by sealing a self-light emitting paint of tritium with a transparent resin. CONSTITUTION: A self-light emitting paint 8 of tritium, to the upper side of which a white light storage paint 13 is applied, is enclosed a sealing material of triethylene fluori-chloride which is transparent while containing no hydrogen. A light storage paint 10 is applied to the upper side of an element 9. Those parts including a liner 11 of aluminum or titanium are sealed with a similar transparent resin 12 containing no hydrogen and are arranged below a liquid crystal cell. When the liquid crystal cell is illuminated, the self-light emitting paint of tritium having a long life, which has its safety ensured by the seal, becomes a satisfactory illuminating source to provide a watch, in which the display can be made to a satisfactory extent even at night, can be produced. COPYRIGHT: (C)1979,JPO&Japio




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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    JP-S5641137-AApril 17, 1981Todomu MouriPaper pattern for paper box
    JP-S5824343-B2May 20, 1983Tome Mori