Color cathode ray tube with frame, mask or shield having an oxid

Details Color cathode ray tube with frame, mask or shield having an oxid Color cathode ray tube with frame, mask or shield having an oxid

1982-11-03

1985-12-10

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313407, H01J 2907, H01J 2981

Patent

active

045582521

ABSTRACT:
A color cathode ray tube having a mask frame, a shadow mask attached to the mask frame and inner shield attached to the mask frame. At least one of these parts is made substantially of iron (Fe) and has a oxidized layer on its surface. That part further includes silicon (Si), aluminum (Al) and chromium (Cr) as impurity elements in weight amounts satisfying the following relation:

REFERENCES:
patent: 3647572 (1972-03-01), Todd et al.
patent: 3838985 (1974-10-01), Ornstein
patent: 4019085 (1977-04-01), Sahata
patent: 4292565 (1981-09-01), Kanto
patent: 4306172 (1981-12-01), Matsukura et al.

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