High resolution CRT device comprising a cold cathode...

Details High resolution CRT device comprising a cold cathode... High resolution CRT device comprising a cold cathode...

2005-09-13

2005-09-13

Tran, Thuy Vinh (Department: 2821)

Electric lamp and discharge devices

Discharge devices having three or more electrodes

C313S309000, C313S446000

Reexamination Certificate

active

06943489

ABSTRACT:
The CRT device comprises a cold cathode electron gun that includes cathodes, a peripheral focusing electrode, and an accelerating electrode. The cathode has a structure in which an emitter electrode and a gate electrode are joined together with an insulating layer interposed therebetween. The electric potential difference from the emitter electrode is 60V for the gate electrode, 0V for the peripheral focusing electrode, and 4.6 kV for the accelerating electrode.

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