Electron emission element, charging device, process...

Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube

Reexamination Certificate

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C313S582000, C313S496000, C313S497000, C445S024000, C445S025000

Reexamination Certificate

active

07728503

ABSTRACT:
An electron emission element according to the present invention is compact, thin and low cost, and has a structure and constitution in which deterioration of the electron emission material itself is low. In the electron emission element, boron nitride material is used as the electron emission material, and a metal material or a semiconductor material is used as a substrate for forming the boron nitride material. In this way it is possible to obtain good quality boron nitride material on the substrate. Also, a voltage can be applied to the material to emit electrons, also electrons can be supplied. Moreover, by using Sp3-bonded boron nitride as the boron nitride material, and using Sp3-bonded 5H—BN material or Sp3-bonded 6H—BN material as the Sp3-bonded boron nitride, a field electron emission element can be achieved for which high efficiency electron emission characteristics unprecedented in conventional art can be obtained.

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English Translation of JP2003-145826.
U.S. Appl. No. 12/186,906, filed Aug. 6, 2008, Someya, et al.

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