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:
Oct. 22, 2002
Filed:
Feb. 10, 2000
Tadashi Sakai, Yokohama, JP;
Kazuya Nakayama, Sagamihara, JP;
Li Zhang, Tokyo, JP;
Gehan Anil Joseph Amaratunga, Cambridge, GB;
Ioannis Alexandrou, Liverpool, GB;
Mark Baxendale, Cambridge, GB;
Nalin Rupasinghe, Cambridge, GB;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
An electron emission film includes a matrix consisting essentially of amorphous carbon and fullerene-like structures consisting essentially of a two-dimensional network of six-membered carbon rings. The fullerene-like structures are dispersed in the matrix and partially project from the matrix. The weight ratio of amorphous carbon to the fullerene-like structures is about 50:50 to 5:95. Amorphous carbon contains nitrogen acting as a donor at a concentration of about 4×10 to 10 atom %.