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. 17, 2008
Filed:
Feb. 18, 2005
Applicant:
Kyung-sun Ryu, Suwon-si, KR;
Inventor:
Kyung-Sun Ryu, Suwon-si, KR;
Assignee:
Samsung SDI Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/62 (2006.01); H01J 63/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A structure for a field emission device and a method of making the same. The cathode electrodes are formed as a two-layered structure of chromium on top of aluminum. Photosensitive electron emission material is patterned via back side exposing, the aluminum layer serving as a mask. In receptor regions, conducting aluminum fingers form electrical contact with the emission material while spaces between the aluminum fingers serve as a window to allow for exposure of the photosensitive emission material.