Field emission cold cathode element

Details Field emission cold cathode element Field emission cold cathode element

1998-03-24

2000-05-09

Patel, Vip

Electric lamp and discharge devices

Discharge devices having a multipointed or serrated edge...

313336, 313351, 313495, H01J 102

Patent

active

060608234

ABSTRACT:
A field emission cold cathode element designed with the objects of enabling control of overcurrents that arise at times of discharge without adding a power source or complicating the operating circuits, realizing high-frequency operation and lower power consumption without giving rise to short-circuit damage due to discharge breakdown, and moreover, suppressing increases in element temperature; wherein an n-type region underlying emitters is divided between three n-type semiconductor regions: a first n-type semiconductor region, a second n-type semiconductor region and a third n-type semiconductor region. A third n-type semiconductor region below the emitters formed so as to be surrounded by a p-type semiconductor region, a second n-type semiconductor region below the third n-type semiconductor region formed so as to be surrounded by a p-type semiconductor region, and a first n-type semiconductor region formed below the second n-type semiconductor region; wherein the cross section of the second n-type semiconductor region is smaller than the cross section of the third n-type semiconductor region, thereby producing an n-type region made up of three n-type semiconductor regions that has a constricted shape.

REFERENCES:
patent: 5731228 (1998-03-01), Endo et al.

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