Cold cathode and cathode ray tube using the cold cathode

Details Cold cathode and cathode ray tube using the cold cathode Cold cathode and cathode ray tube using the cold cathode

1996-10-21

1998-09-29

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313309, 313351, 313336, H01J 146

Patent

active

058149317

ABSTRACT:
The invention forms on a substrate an electron emission area composed of at least a single micro cold cathode which is composed of an emitter and a gate electrode, arranges plural focusing electrodes surrounding this electron emission area in the periphery of the electron emission area, and connects with each other the focusing electrodes facing each other around the electron emission area. An electron beam having a vertically long spot near the cathode is formed by making more intense the horizontal focusing when the electron beam is scanning the peripheral part of the screen on the basis of a horizontal and a vertical synchronizing signal. Thus the invention can correct distortion of the electron beam caused by deflection and can achieve and excellent resolution all over the display screen, and furthermore, can compose a cathode ray tube using this cold cathode as an electron source.

REFERENCES:
patent: 5496199 (1996-03-01), Makishima et al.
patent: 5514847 (1996-05-01), Makishma et al.
patent: 5604401 (1997-02-01), Makishma et al.
Yokoo et al., "Technological Breakthrough in Development of Field Emitter Display", Proceedings of the First International Display Workshops '94, pp. 19-22.
Kesling et al., "Field-Emission Display Resolution", SID 93 Digest, pp. 599-602.
Spindt et al., "A Thin-Film Field-Emission Cathode", Journal of Applied Physics, vol. 39, No. 7, Jun. 1968, pp. 3504-3505.

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