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:
Jan. 13, 2009
Filed:
Nov. 25, 2005
Sang-ho Jeon, Suwon-si, KR;
Byong-gon Lee, Suwon-si, KR;
Sang-hyuck Ahn, Suwon-si, KR;
Su-bong Hong, Suwon-si, KR;
Sang-Ho Jeon, Suwon-si, KR;
Byong-Gon Lee, Suwon-si, KR;
Sang-Hyuck Ahn, Suwon-si, KR;
Su-Bong Hong, Suwon-si, KR;
Samsung SDI Co., Ltd., Suwon-si, Gyeonggi-do, KR;
Abstract
In an electron emission device, the surface roughness of a substrate with driving electrodes and an insulating layer is optimized. The electron emission device includes first and second substrates facing each other with a predetermined distance therebetween. An electron emission unit is formed on a surface of the first substrate facing the second substrate, and includes electron emission regions, a plurality of driving electrodes, and an insulating layer for insulating the driving electrodes from each other. A light emission unit is formed on a surface of the second substrate facing the first substrate, and includes phosphor layers and an anode electrode. The first substrate satisfies the following condition: 0.5 nm≦Ra≦1.8 nm, where Ra indicates the average roughness of the surface of the first substrate facing the second substrate.