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. 23, 2002
Filed:
Feb. 09, 2000
Applicant:
Inventors:
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/30 ;
U.S. Cl.
CPC ...
H01J 1/30 ;
Abstract
A field emission device ( ) includes a cathode ( ) and a ballast resistor ( ) connected to cathode ( ). Ballast resistor ( ) includes a thin metallic layer ( ) and a protective layer ( ) disposed on metallic layer ( ). Metallic layer ( ) is made from chromium and has a thickness of about 40 angstroms. Protective layer ( ) is made from sputtered silicon and has a thickness of about 500 angstroms. A portion of metallic layer ( ) makes physical contact with cathode ( ) and is sandwiched between cathode ( ) and protective layer ( ). Protective layer ( ) is positioned to shield metallic layer ( ) from high transient voltages.