Display tube and method of manufacturing a display screen...

Details Display tube and method of manufacturing a display screen... Display tube and method of manufacturing a display screen...

H - Electricity

01

J

316/13, 313/35.1

H01J 29/18 (2006.01) H01J 9/20 (2006.01) H01J 9/227 (2006.01) H01J 29/28 (2006.01)

Patent

CA 1184232

ABSTRACT: Display tube and method of manufacturing a display screen for such a display tube. Corrosion of the aluminium film of the display screen of a display tube as a result of an electro-chemical reaction between water and aluminium is prevented substan- tially by providing the aluminium with an aluminium phosphate layer at the area where it adjoins the carbon particles. This may be done by rinsing or spraying the carbon particles with an at most 2% by weight phosphoric acid solution in water prior to or after providing the aluminium film.

403924

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