Patent
1975-01-31
1976-09-14
Lazarus, Richard B.
H01J 9385
Patent
active
039803660
ABSTRACT:
The display panel is filled with an ionizable gas and includes a base plate on which a plurality of groups of cathodes and their conductors are formed, each group of cathodes being operable to display a character. The panel also includes a face plate, spaced from the base plate, and carrying transparent conductive anodes, each associated with one group of cathodes. The base plate and face plate are hermetically sealed together by a frame of a sealing material formed from a thin layer of powdered glass in a removable carrier.
The panel is made by assembling all of the parts and sealing the envelope but including a wire in the frame of sealing material. After the seal has been formed, the wire is removed to leave a small hole providing gas communication with the interior of the panel. The panel is then placed in an oven and evacuated, baked out, and filled with the desired gas filling through the hole, after which the hole is hermetically sealed. A separate mass of sealing material may also be provided to seal the hole left by the wire.
REFERENCES:
patent: 1398033 (1921-11-01), Maurer
patent: 2032003 (1936-02-01), Clause
patent: 2988852 (1961-06-01), Henry
patent: 3746420 (1973-07-01), Baker et al.
patent: 3799649 (1974-03-01), Carlyle
patent: 3886014 (1975-05-01), Bayer
B351,672, Jan. 1975, Beckerman et al., 316/20.
Burroughs Corporation
Green Robert A.
Lazarus Richard B.
Penn William B.
Peterson Kevin R.
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