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:
Apr. 14, 2015
Filed:
Apr. 04, 2011
Applicant:
Qiu-hong HU, Göteborg, SE;
Inventor:
Qiu-Hong Hu, Göteborg, SE;
Assignee:
Lightlab Sweden AB, Stockholm, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/304 (2006.01); H01J 63/04 (2006.01); H01J 31/12 (2006.01); H01J 63/02 (2006.01); B82Y 20/00 (2011.01);
U.S. Cl.
CPC ...
H01J 1/3044 (2013.01); H01J 1/304 (2013.01); H01J 31/123 (2013.01); H01J 63/02 (2013.01); H01J 63/04 (2013.01); H01J 2201/3043 (2013.01); H01J 2201/30446 (2013.01); H01J 2201/30484 (2013.01); H01J 2201/30488 (2013.01); H01J 2201/30492 (2013.01); H01J 2201/30496 (2013.01); H01J 2329/0428 (2013.01); H01J 2329/0439 (2013.01); H01J 2329/0465 (2013.01); H01J 2329/0468 (2013.01); H01J 2329/0471 (2013.01); H01J 2329/0473 (2013.01); B82Y 20/00 (2013.01);
Abstract
The present invention relates to afield emission cathode, comprising an at least partly electrically conductive base structure, and a plurality of electrically conductive micrometer sized sections spatially distributed at the base structure, wherein at least a portion of the plurality of micrometer sized sections each are provided with a plurality of electrically conductive nanostructures. Advantages of the invention include lower power consumption as well as an increase in light output of e.g. a field emission lighting arrangement comprising the field emission cathode.