Attaching self-supporting emissive film to cathode support
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United States of America Patent
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-
Apr 8, 1980
Grant Date -
N/A
app pub date -
Mar 14, 1979
filing date -
Mar 14, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In one aspect of the invention a process for affixing a self-supporting film of emissive materials in a binder to a cathode support member to provide a cathode for a cathode ray tube includes the steps of depositing at least one drop of a liquid mixture containing a solvent for the binder of the film onto a cathode support member, contacting the liquid mixture with the self-supporting film, and preferentially evaporating the liquid mixture to cause the binder of the film to affix the film to the cathode support member. In another aspect of the invention, an improved liquid mixture for affixing a self-supporting film of emissive materials in a binder to a cathode support member includes at least two liquids miscible in all proportions with one liquid essentially a non-solvent and another higher boiling liquid a solvent for the binder of the film.
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