Abstract:
A method of sealing display cathodes in a glass envelope wherein the cathodes having lead wires attached thereto are inserted into a glass envelope having an insertion port. A heatproof insulating stem is then inserted into the glass envelope to a position based inwardly from the insertion port. The stem has apertures which receive the lead wires of the cathodes so that they lead out to the insertion port side of the envelope. Fusion glass is then packed in the space between the stem and the part of the glass envelope about the insertion port and in the spaces formed between the lead wires and the apertures. The fusion glass is then heated by an infrared radiation source to simultaneously fuse and integrally bond the stem with both the lead wires and glass envelope.
Abstract:
A display device having a heat-proof insulating base plate having formed therein on one side a plurality of grooves, a plurality of cathodes disposed in the grooves in a manner not to project out from the surface of the base plate, an anode common to the cathodes and a transparent glass tube envelope having enclosed therein all the elements mentioned above, and a method of sealing the glass tube envelope by the use of infrared ray absorbing glass of low melting point.