Title: Attaching self-supporting emissive film to cathode support

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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Inventors: Palty, George (Seneca Falls, NY, US)
Speigel, Kenneth (Seneca Falls, NY, US)

Application Number: 020378
Filing Date: 1979-03-14
Publication_date: 1980-04-08
Assignee: GTE Sylvania Incorporated (Stamford, CT)
Primary Class(es): 156/309.3 156/295
Other Classes:
US Patent Ref:

2986671	May, 1961	Kerstetter	313/346.
2998052	Aug, 1961	Roeber	313/346.
3223569	Dec, 1965	McKeirna	156/294.
3278354	Oct, 1966	Weanin	156/307.

Other Refs:
Primary Examiner: Simmons, David A.
Assistant Examiner:
Attorney: Buffton; Thomas H.