Electrode for electron source, method for producing the...

Details Electrode for electron source, method for producing the... Electrode for electron source, method for producing the...

2005-07-12

2005-07-12

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C313S326000, C313S306000, C313S352000

Reexamination Certificate

active

06917157

ABSTRACT:
Disclosed is an electrode for an electron source, a method for producing the same, and an electronic tube using the same which provide a decreased thickness of an electron emitting source, and an improved current distribution percentage. The electronic tube comprises a substrate, an electron emitting source area formed on the substrate, and a shield area around the electron emitting area. The shield area is formed of a material that does not produce an electron emitting source, when the electron emitting source is produced by a dry method. As a result, if a space between an electron drawing electrode and the electrode for the electron source is narrow, the percentage of anode current increases in the total current, thereby improving the current distribution percentage.

REFERENCES:
patent: 6239547 (2001-05-01), Uemura et al.
patent: 6650061 (2003-11-01), Urayama et al.
patent: 2002-133999 (2002-05-01), None

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