Ferroelectric cold cathode

Details Ferroelectric cold cathode Ferroelectric cold cathode

1996-03-08

1998-05-05

O'Shea, Sandra L.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313309, 313336, 313351, 313497, H01J 162, H01J 102, H01J 116, H01J 1910

Patent

active

057479267

ABSTRACT:
A ferroelectric cold cathode comprising a ferroelectric layer formed of a ferroelectric material and provided on its one surface with an emitter which is a projection having a sharp tip portion, a first electrode layer formed on one surface of the ferroelectric layer and having an opening allowing the sharp tip portion of the emitter to be exposed therethrough, and a second electrode layer formed on the other surface of the ferroelectric layer. When a voltage is applied between the first electrode and the second electrode, a dielectric polarization is reversed in the ferroelectric layer, resulting in the emission of electrons from the sharp tip portion of the emitter.

REFERENCES:
patent: 5367181 (1994-11-01), Yoshida
patent: 5453661 (1995-09-01), Auciello et al.
Ferroelectrics, vol. 100, pp. 1-16, 1989, H. Gundel, et al., "Copious Electron Emission From PLZT Ceramics With a High Zirconium Concentration".
Jpn. J. Appl. Phys., vol. 31, No. 9B, pp. 3098-3101, Sep. 1992, Jun-ichi Asano, et al., "Field-Excited Electron Emission From Ferroelectric Ceramic in Vacuum".

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