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:
Jun. 23, 2015
Filed:
Jul. 15, 2013
National Defense University, Bade, Taoyuan County, TW;
Yih-Ming Liu, Zhongli, TW;
Meng-Jey Youh, Taoyuan, TW;
Nen-Wen Pu, Longtan Township, Taoyuan County, TW;
Ming-Der Ger, Daxi Township, Taoyuan County, TW;
Kevin Cheng, Pingzhen, TW;
Kun-Ju Chung, Chaozhou Township, Pingtung County, TW;
Jhih-Cheng Jiang, Sanxing Township, Yilan County, TW;
Guan-Fang Xu, Guanyin Township, Taoyuan County, TW;
NATIONAL DEFENSE UNIVERSITY, Bade, Taoyuan County, TW;
Abstract
A field emission cathode comprises at least one electron emitting parcel, and at least one ion absorbing parcel each being electrically connected with each of the at least one electron emitting parcel. The electron emitting parcel includes a first substrate and a nano emission component disposed on the first substrate for emitting electrons in an electric field. The ion absorbing parcel is constituted by a second substrate, in which the electric conductivity of the first substrate is less than that of the second substrate. A field emission light comprises the said field emission cathode, a field emission anode and a power supply. Thus the positive ions in an electric field can be absorbed by ion absorbing parcels to suppress an ion bombardment in the electric field. The efficiency of the electric field of the field emission is then maintained, and the lifetime of the field emission light is enhanced.