Gas discharge display device and method for its production

Details Gas discharge display device and method for its production Gas discharge display device and method for its production

1984-08-06

1986-09-23

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 40, H01J 938

Patent

active

046133127

ABSTRACT:
A gas discharge panel normally comprises a number of mutually parallel plates (1, 2, 3, 4) which are joined together at their edges by a glass solder forming a frame. At least some of the plates support operational electrodes (8, 9, 11, 12, 15) that are passed through the glass solder frame (16). Such a cell is normally first soldered together at about 450.degree. C., then fully cooled and subsequently baked at 320.degree. C. According to the invention, the baking is effected during the cooling phase; that is, the cell is held at the baking temperature for a while as it cools. Such a heat treatment is favorable in seveal respects: The baking temperature, which previously was limited by the temperature alternation stress, can be increased by at least 50.degree. C.; the total time required for the soldering and baking can be cut at least in half; and the electrodes (8, 9, 11, 12, 15) can no longer react with the ambient air between soldering and baking. By further carrying out the soldering in an inert gas atmosphere, reproducible results may be obtained even with sensitive electrodes.
The gas discharge panel may be used as a flat picture screen where electrons are produced in a plasma and, after being post-accelerated to several kV, are directed onto a phosphor.

REFERENCES:
patent: 3837724 (1974-09-01), Haberland et al.
patent: 4018490 (1977-04-01), Berkenblit et al.

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