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. 08, 2008
Filed:
Jul. 19, 2005
Yang Wei, Beijing, CN;
Peng Liu, Beijing, CN;
Lei-mei Sheng, Beijing, CN;
Liang Liu, Beijing, CN;
Zhao-fu HU, Beijing, CN;
Cai-lin Guo, Beijing, CN;
Pi-jin Chen, Beijing, CN;
Shou-shan Fan, Beijing, CN;
Yang Wei, Beijing, CN;
Peng Liu, Beijing, CN;
Lei-Mei Sheng, Beijing, CN;
Liang Liu, Beijing, CN;
Zhao-Fu Hu, Beijing, CN;
Cai-Lin Guo, Beijing, CN;
Pi-Jin Chen, Beijing, CN;
Shou-Shan Fan, Beijing, CN;
Tsinghua University, Haidian District, Beijing, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A field emission lamp includes: a transparent bulb () having a neck portion; a lamp head mated with the neck portion; an anode layer () formed on an inner surface of the bulb; a fluorescence layer () formed on the anode layer; a cathode electrode () and an anode electrode () located at the lamp head; an anode down-lead ring () located at the neck portion, the anode down-lead ring engaging with the anode layer and electrically connecting with the anode electrode via an anode down-lead pole () and a pair of down-leads (); and an electron emitting cathode positioned in the bulb and engaging with the cathode electrode. The field emission lamp is safe for humans and environmentally friendly, provides a high electrical energy utilization ratio, and has a reduced cost.