Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1996-01-16
1996-11-26
Patel, Nimeshkumar D.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
H01J 2980
Patent
active
055788980
ABSTRACT:
A shadow mask with a low thermal expandability of an Fe--Ni-based alloy and a high surface hardness is disclosed. This shadow mask includes a mask main body consisting of an Fe--Ni-based alloy containing iron and nickel as main constituents, a large number of fine electron beam apertures formed in the mask main body, and a surface layer formed on the surface of the mask main body and containing at least one compound selected from the group consisting of iron nitride, iron nickel nitride, iron boride, iron nickel boride, iron silicide, and iron nickel silicide.
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Hagiwara Mituharu
Higashinakagawa Emiko
Mori Fumio
Ohtake Yasuhisa
Sugai Shinzo
Kabushiki Kaisha Toshiba
Patel Nimeshkumar D.
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