Abstract:
An electron emission device and an electron emission display using the same are provided to improve electron emission uniformity in each of pixels by enhancing shape uniformity of an opening of a focusing electrode. A plurality of driving electrodes are formed on a substrate. A plurality of electron emission units(20) are electrically connected to at least one driving electrode. A focusing electrode(22) is positioned on an upper part of the driving electrodes in an insulating state. The focusing electrode includes at least one opening which is formed at each of pixels set on the substrate. The focusing electrode satisfies the following condition 1-[Wmax-Wmin/2Wave]>=0.95 where Wmax, Wmin, and Wave are a maximum width, a minimum width, and an average width, respectively. The driving electrodes include a plurality of cathode electrodes(14) and a plurality of gate electrodes(18) which are formed in a crossing direction on both sides of the insulating layer. At least one electron emission unit is formed on the cathode electrode with which the gate electrodes intersects.
Abstract:
An electron emission device and an electron emission display having the same are provided to increase focuss efficiency of an electron beam by optimizing displacement of openings of a focuss electrode and openings of gate electrodes. An electron emission device includes substrates(2,4), cathode electrodes(6) formed on any one of the substrates, an electron emission part(12) electrically connected to the cathode electrode, gate electrodes(10) formed on a first insulating layer(8) formed on the cathode electrodes, and focuss electrodes(14) formed on a second insulating layer(16). Plural openings(101) are formed on the gate electrodes at every across region of the cathode electrode and the gate electrode, and openings(141) corresponding to the openings of gate electrode are formed on the focuss electrodes.