Flat display tube having shielding member between beam guide and

Details Flat display tube having shielding member between beam guide and Flat display tube having shielding member between beam guide and

1979-02-12

1980-11-18

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

H01J 2904, H01J 3108

Patent

active

042348153

ABSTRACT:
An evacuated envelope includes substantially parallel front and back walls with a cathodoluminescent screen on the front wall. Within the envelope, in spaced relation to the back wall and substantially parallel to the screen, it is an electron beam guide comprising a pair of spaced apart, elongated guide grids having a plurality of apertures therethrough. At one end of the beam guide is an electron beam generating and directing means which directs at least one beam of electrons between the guide grids. A shielding member is disposed between the screen and the beam guide adjacent to the electron beam generating means.

REFERENCES:
patent: 2858464 (1958-10-01), Roberts
patent: 4088920 (1978-05-01), Siekanowicz
patent: 4115724 (1978-09-01), Endriz
patent: 4121130 (1978-10-01), Gange

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