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:
Aug. 07, 2012
Filed:
Dec. 03, 2010
Peng Liu, Beijing, CN;
Duan-liang Zhou, Beijing, CN;
Pi-jin Chen, Beijing, CN;
Zhao-fu HU, Beijing, CN;
Cai-lin Guo, Beijing, CN;
Bing-chu Du, Beijing, CN;
Shou-shan Fan, Beijing, CN;
Peng Liu, Beijing, CN;
Duan-Liang Zhou, Beijing, CN;
Pi-Jin Chen, Beijing, CN;
Zhao-Fu Hu, Beijing, CN;
Cai-Lin Guo, Beijing, CN;
Bing-Chu Du, Beijing, CN;
Shou-Shan Fan, Beijing, CN;
Tsinghua University, Beijing, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, New Taipei, TW;
Abstract
A field emission device includes an insulative substrate, an electron pulling electrode, a secondary electron emission layer, a first dielectric layer, a cathode electrode, and an electron emission layer. The electron pulling electrode is located on a surface of the insulative substrate. The secondary electron emission layer is located on a surface of the electron pulling electrode. The cathode electrode is located apart from the electron pulling electrode by the first dielectric layer. The cathode electrode has a surface oriented to the electron pulling electrode and defines a first opening as an electron output portion. The electron emission layer is located on the surface of the cathode electrode and oriented to the electron pulling electrode.