Apparatus for quantitative analysis of residual gases in flat panel vacuum packages

We describe an apparatus for quantitative determination of residual gases in flat panel display vacuum tubes like field emission displays, vacuum fluorescent displays, and plasma displays. This system is based on the principle of expansion of gases from the test device into a reference volume, where...

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Bibliographic Details
Published in:Journal of vacuum science & technology. A, Vacuum, surfaces, and films Vacuum, surfaces, and films, 2000-03, Vol.18 (2), p.343-348
Main Authors: Chalamala, Babu R., Uebelhoer, David, Dean, Kenneth A.
Format: Article
Language:English
Subjects:
Chemical analysis
Chemical equipment
Electron tubes
Flat panel displays
Mass spectrometry
Numerical methods
Partial pressure
Vacuum
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Summary:We describe an apparatus for quantitative determination of residual gases in flat panel display vacuum tubes like field emission displays, vacuum fluorescent displays, and plasma displays. This system is based on the principle of expansion of gases from the test device into a reference volume, where the gases are analyzed using a quadrupole mass spectrometer. The system was calibrated using gas expansion from reference gas cells and vacuum envelopes with known pressures. The effectiveness of the system was demonstrated by measuring the residual gases inside flat vacuum tubes, commercial vacuum fluorescent displays modulus, and field emission displays.
ISSN:0734-2101
1520-8559
DOI:10.1116/1.582190