Cathode structure with reduced capacitance

Details Cathode structure with reduced capacitance Cathode structure with reduced capacitance

1997-07-07

1999-11-23

Day, Michael

Electric lamp and discharge devices

Discharge devices having a multipointed or serrated edge...

313336, H01J 130, H01J 1922

Patent

active

059906030

ABSTRACT:
A cathode structure of an electron gun for a cathode ray tube includes: a substrate (51); cathode electrode layers (52) formed on the substrate (51) and spaced apart from each other at predetermined intervals; a plurality of metal tips (53); an insulating layer (54) formed on the cathode electrode layers (52) and the substrate (51) to isolate each of the metal tips (53) from each other; a gate electrode layer having a first gate electrode portion (56) having a gate through which the metal tips (53) are exposed and formed on top of the insulating layer (54), and a second gate electrode portion (57) extending horizontally from said first gate portion (56) and divided into several parts by a plurality of gaps (60) for reducing the capacitance between the cathode electrode layers (52) and the second gate electrode portion (57).

REFERENCES:
patent: 4178531 (1979-12-01), Alig
patent: 5719477 (1998-02-01), Tomihari
patent: 5763987 (1998-06-01), Morikawa et al.

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