公开(公告)号：EP1957397A4

公开(公告)日：2009-09-09

申请号：EP06823857

申请日：2006-12-01

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM DAE JUN ,  SONG YOON HO ,  JEONG JIN WOO

IPC: H01J9/02 ,  H01J1/304

CPC classification number: H01J9/025 ,  B22F2999/00 ,  C22C2026/002 ,  H01J1/304 ,  H01J2201/30453 ,  H01J2201/30469 ,  B22F1/0022 ,  B22F1/0018 ,  B22F1/0074

Abstract: Provided are methods of manufacturing carbon nanotube (CNT) paste, to which a nano-sized particle is added, and a CNT emitter with high reliability for a field emission display (FED). The method includes the steps of: (i) dispersing CNT powder in a solvent; (ii) adding an organic binder to the solution in which the CNT powder is dispersed; and (iii) performing a milling process to adjust viscosity of the dispersion solution to which the organic binder is added, wherein a nano-sized metal particle is added in step (i) or (iii). Accordingly, the nano-sized metal particle is added as a metal filler of the CNT paste, and thus a metal may be melted at a low temperature at which CNTs do not deteriorate. Thus, adhesion between the CNT paste and a cathode may be improved, and resistance between the cathode and the CNT or between CNTs may be reduced. Further, the CNT paste manufactured by the above method is employed in manufacturing the CNT emitter to thereby obtain uniform emission of electrons from the CNT emitter and increase electron emission sites, and thus the reliability of the CNT emitter may be further improved.