Envelope structure for flat cathode ray tube

Details Envelope structure for flat cathode ray tube Envelope structure for flat cathode ray tube

1984-05-02

1986-01-14

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313477R, 313317, 428 13, 428 34, 445 22, H01J 2986

Patent

active

045647852

ABSTRACT:
A flat type cathode ray tube is disclosed which includes a flat envelope formed of a flat panel and a dish-shaped funnel, a first deflection system composed of a back electrode and a phosphor screen which are both located within the envelope in opposing relation with each other, a neck portion coupled to the envelope, the neck portion extending in the surface direction of the flat envelope having therein an electron gun, and a second deflection system formed of electro-static deflection plates which are so located within the envelope that they oppose each other across the path of the electron beam emitted from the electron gun to the first deflection system with respect to a thickness direction of the flat envelope. In this case, a projecting portion is provided from the peripheral portion of the funnel for molding material.

REFERENCES:
patent: 3890541 (1975-06-01), McCarthy et al.
patent: 4325489 (1982-04-01), Russell et al.
patent: 4339482 (1982-07-01), Glaser et al.
patent: 4339694 (1982-07-01), Ohkoshi et al.

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