Loading process to provide improved vacuum environment

Details Loading process to provide improved vacuum environment Loading process to provide improved vacuum environment

1998-05-26

2000-07-25

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 42, H01J 9385, H01J 939

Patent

active

060930721

ABSTRACT:
A pump is used to reduce the pressure in a field emission display package. The package is then filled with a gas or gas mixture, such as nitrogen and hydrogen. The package is then pumped again, to reduce the pressure in the package to the desired pressure and to obtain the desired partial pressure of the gas. Optionally, the process is then repeated, with a gas or gas mixture again inserted into the package and then the pressure reduced with a pump. After pumping, the package may be heated to cause outgassing and to activate a getter. The pumping is performed with a mechanical pump, an ion pump, or a combination of the two types of pumps.

REFERENCES:
patent: 3658401 (1972-04-01), Files
patent: 4018490 (1977-04-01), Berkenblit et al.
patent: 5564958 (1996-10-01), Itoh et al.
patent: 5688708 (1997-11-01), Kato et al.
Giorgi, T.A., "Getters and Gettering", Proc. 6th Internl. Vacuum Congr. 1974; Japan, J. Appl. Phys. Suppl. 2, Pt. 1, 1974, pp. 53-60.
saes getters, "Barium Getters for Lamps, Special Tubes, Receiving Tubes".
saes getters, "St121 and St122 Porous Coating Getters", Jul. 1987, pp. 2-8 (text) plus tables.
saes getters, "St171.RTM. Non-Evaporable Porous Getters", Oct. 1989, p. 5.

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