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:
May. 19, 2015
Filed:
Nov. 30, 2011
Applicants:
Toshihiro Kaneko, Osaka, JP;
Tadashi Iwamatsu, Osaka, JP;
Ayae Nagaoka, Osaka, JP;
Inventors:
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/32 (2006.01); H01J 1/312 (2006.01); B41J 2/39 (2006.01); G03G 15/02 (2006.01); H01J 9/02 (2006.01); H01J 31/12 (2006.01); B41J 2/41 (2006.01); H01J 63/02 (2006.01); H01J 63/06 (2006.01); H05B 33/22 (2006.01); G21K 5/02 (2006.01); G02F 1/1335 (2006.01);
U.S. Cl.
CPC ...
H01J 1/312 (2013.01); B41J 2/39 (2013.01); G03G 15/0291 (2013.01); H01J 9/02 (2013.01); H01J 31/127 (2013.01); H01J 9/025 (2013.01); H05B 33/22 (2013.01); B41J 2/41 (2013.01); H01J 63/02 (2013.01); H01J 63/06 (2013.01); G21K 5/02 (2013.01); G02F 2001/133614 (2013.01); G02F 2001/133625 (2013.01);
Abstract
An electron emission element () includes an electrode substrate () and a thin film electrode (), and emits electrons from the thin film electrode () by voltage application across the electrode substrate () and the thin film electrode (). An electron accelerating layer () containing at least insulating fine particles () is provided between the electrode substrate () and the thin film electrode (). The electrode substrate () has a convexoconcave surface. The thin film electrode () has openings () above convex parts of the electrode substrate ().