Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Reexamination Certificate
2007-03-28
2010-06-01
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
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.
Iijima Yoshihiko
Ishii Toshihiro
Katano Yasuo
Ohta Eiichi
Sekiya Takuro
Bowman Mary Ellen
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Patel Nimeshkumar D.
Ricoh & Company, Ltd.
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