Mask tube for display, notably for color television

Details Mask tube for display, notably for color television Mask tube for display, notably for color television

H - Electricity

01

J

313/35.154

H01J 29/20 (2006.01) H01J 29/07 (2006.01)

Patent

CA 2001321

Disclosed is a mask tube for display or color television wherein the face of the iron-based mask opposite the screen is coated with a heavy metal or a heavy metal compound with an atomic number greater than 70.. The heavy metal or heavy metal compound is mixed with an alkaline silicate, for example potassium silicate. The ratio by weight between the heavy metal and the silicate is between 7 and 17, and is preferably equal to 12.

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