Method of manufacturing a CRT
AssigneeKoninklijke Philips Electronics N.V.
InventorJohannes Maria Azalina Antonius Compen
Life of this patent
Estimating the term…
Loading patent…
AssigneeKoninklijke Philips Electronics N.V.
InventorJohannes Maria Azalina Antonius Compen
Estimating the term…
A method of manufacturing a cathode ray tube includes arranging the tube with its neck part in a downward position, and covering the inner surface of its funnel-shaped part with a carrier liquid including a conductive material. Carrier liquid is supplied through a pipe positioned near an edge of the funnel-shaped part and close to the inner surface of the funnel-shaped part. The pipe and the funnel-shaped part are moved with respect to each other so that a projection of the pipe on the inner surface describes a trajectory on the inner surface of the funnel-shaped part which is substantially parallel to the edge of the funnel-shaped part, thus allowing the carrier liquid to drain downwardly, thereby leaving a coating formed by a residue of the conductive material on the inner surface. During the covering step, the pipe and the funnel-shaped part are moved with respect to each other to describe a non-closed loop trajectory, such that a high-voltage connection element is not completely coated.
A method of manufacturing a cathode ray tube including a funnel-shaped part connected to a neck part, the tunnel-shaped part having an inner surface and a high-voltage connection element, by arranging the tube with its neck part in a downward position and covering the inner surface of the funnel-shaped part with a carrier liquid comprising a conductive material, the method comprising:
A device for manufacturing a cathode ray tube including a funnel-shaped part connected to a neck part, the funnel-shaped part having an inner surface and a high-voltage connection element, by arranging the tube with its neck part in a downward position and covering the inner surface of the funnel-shaped part with a carrier liquid comprising a conductive material, comprising:
Dependencies are inferred from the claim text.