Beam-index type color cathode ray tube device

Details Beam-index type color cathode ray tube device Beam-index type color cathode ray tube device

H - Electricity

01

J

313/35.152

H01J 29/34 (2006.01) H01J 29/28 (2006.01) H01J 29/32 (2006.01) H04N 9/24 (2006.01)

Patent

CA 1267684

ABSTRACT OF THE DISCLOSURE A beam-index type color cathode ray tube device which includes a front panel portion, a screen panel portion which faces the front panel portion, a phosphor screen including a plurality of index phosphor stripes fixed to the inner surface of the screen panel portion and extending at regularly spaced intervals. A porous inorganic layer is fixed on the inner surface of the screen panel portion and extends between each adjoining pair of the index phosphor stripes. A metallic reflecting layer covers the index phosphor stripes and the porous inorganic layer. A plurality of color phosphor stripes is applied to the metallic reflecting layer in a predetermined pattern. A photodetecting portion disposed at the outside of the screen panel portion receives fluorescence from the actuation of the index phosphor stripes.

517660

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