Cold cathode display device and method of manufacturing cold...

Details Cold cathode display device and method of manufacturing cold... Cold cathode display device and method of manufacturing cold...

2006-06-20

2006-06-20

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

C313S495000

Reexamination Certificate

active

07064479

ABSTRACT:
A cold cathode display device which has a small thickness and a large display area, in which an anode can be sufficiently distant from an extraction electrode to ensure a breakdown voltage and an electron beam diameter can be made sufficiently smaller than the size of a phosphor, and a method of manufacturing such a cold cathode display device. A focus electrode is added to a conventional cold cathode display device. The focus electrode is located such that extraction electrodes and cathodes are interposed between the focus electrode and a back substrate. The focus electrode includes electron passage windows located opposite the cathodes and electron passage windows. The focus electrode is attached to, and supported by, the extraction electrodes via an insulating material with a distance being maintained between the focus and extraction electrodes.

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