The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2004
Filed:
Jul. 17, 2000
Applicant:
Inventors:
Weng Poo Kang, Nashville, TN (US);
Jimmy Lee Davidson, Brentwood, TN (US);
David V. Kerns, Jr., Nashville, TN (US);
Assignee:
Vanderbilt University, Nashville, TN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/30 ; H01J 1/304 ; H01J 1/924 ; H01J 1/902 ;
U.S. Cl.
CPC ...
H01J 1/30 ; H01J 1/304 ; H01J 1/924 ; H01J 1/902 ;
Abstract
Diamond microtip field emitters are used in diode and triode vacuum microelectronic devices, sensors and displays. Diamond diode and triode devices having integral anode and grid structures can be fabricated. Ultra-sharp tips are formed on the emitters in a fabrication process in which diamond is deposited into mold cavities in a two-step deposition sequence. During deposition of the diamond, the carbon graphite content is carefully controlled to enhance emission performance. The tips or the emitters are treated by post-fabrication processes to further enhance performance.