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:
May. 27, 2008
Filed:
Mar. 16, 2006
Sang-ho Jeon, Suwon-si, KR;
Chun-gyoo Lee, Suwon-si, KR;
Sang-jo Lee, Suwon-si, KR;
Sang-hyuck Ahn, Suwon-si, KR;
Su-bong Hong, Suwon-si, KR;
Sang-Ho Jeon, Suwon-si, KR;
Chun-Gyoo Lee, Suwon-si, KR;
Sang-Jo Lee, Suwon-si, KR;
Sang-Hyuck Ahn, Suwon-si, KR;
Su-Bong Hong, Suwon-si, KR;
Samsung SDI Co., Ltd., Suwon-si, KR;
Abstract
An electron emission device includes a first substrate; a second substrate facing the first substrate and spaced apart from the first substrate; an electron emission unit on the first substrate, the electron emission unit having at least two electrodes and an emission region for emitting electrons; and a light emission unit on the second substrate to be excited by a beam formed with the electrons. The electron emission unit includes a focusing electrode for focusing the beam. The light emission unit includes a screen on which pixels are arranged in a pattern. Each of the pixels has a phosphor layer. The phosphor layer of one of the pixels is excited by the beam. The focusing electrode includes an opening, through which the beam passes. A length of the opening is L, a pitch of a pixel is P, and Land Psatisfy: 0.25 ≦L/P≦0.60.