Display tube for light source

Details Display tube for light source Display tube for light source

H - Electricity

01

J

313/1.1

H01J 31/15 (2006.01) H01J 63/06 (2006.01)

Patent

CA 1316569

.ANG. ABSTRACT OF THE DISCLOSURE A display tube for light source as a constituent of picture elements of a large-screen display apparatus which is provided with control electrodes for controlling courses of thermoelectrons emitted from cathodes, thereby decreasing fluctuation in brightness of a fluorescent display cell emitting light upon being bombarded by the electrons and preventing the electrons from bombarding other than predetermined fluorescent display cell with result of no emission of false light.

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