Collimating extraction grid conductor and method

Details Collimating extraction grid conductor and method Collimating extraction grid conductor and method

1994-11-25

1997-07-01

Patel, Nimeshkumar

Electric lamp and discharge devices

Discharging devices with apertured electrode interposed...

313309, 313310, 313336, 313495, 313422, H01J 146

Patent

active

056441878

ABSTRACT:
A an electron source utilizes a novel extraction grid conductor (20,40,41) to assist in focusing an electron beam emitted by the electron source. The extraction grid conductor (20,40,41) has a collimating conductor (29,31) that separate an extraction grid section (17,21,22) of the extraction grid conductor from conducting strips (26,24,32,33) that electrically connect the extraction grid section (17,21,22) to an external voltage source. The collimating conductor (29,31) creates an electric field that prevents emitted electrons from being attracted to the conducting strips (26,24,32,33) thereby maintaining the emitted electron beam in a substantially column-like configuration.

REFERENCES:
patent: 5142184 (1992-08-01), Kane
patent: 5235244 (1993-08-01), Spindt
patent: 5281891 (1994-01-01), Kaneko et al.
patent: 5446337 (1995-08-01), Yokomakura et al.

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