Display tube

Details Display tube Display tube

1986-04-14

1988-07-12

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313495, 313497, H01J 2972, H01J 3100

Patent

active

047572302

ABSTRACT:
In a flat cathode ray display tube of the type comprising an envelope having parallel front and rear walls and containing implosion-preventing support walls dividing the envelope into a plurality of modules, each module including a thermionic wire electron emitter, a switching electrode arrangement having a plurality of apertures to define one of a plurality of electron beam paths directed towards a cathodoluminescent screen carried on the front wall, and a channel electron multiplier intermediate the switching electrode arrangement and the screen for beam current multiplication, and electrodes carried by the support walls for line scanning and electron acceleration, the switching electrode arrangement comprises a stack of mutually insulated electrodes associated with each aperture and selectively operable to allow or prevent electrons to pass therethrough thereby to effect frame scanning.

REFERENCES:
patent: 3935499 (1976-01-01), Oess
patent: 3936697 (1976-02-01), Scott
patent: 4028582 (1977-06-01), Anderson et al.
patent: 4668890 (1987-05-01), Swingler

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