Patent ID: 7064493
Filing Date: 2006-06-20
Classification: G09G,H01J

Abstract:
1. A cold cathode field emission display comprising at least: (A) a display panel having a cathode panel provided with a plurality of electron-emitting regions and an anode panel provided with a phosphor layer and an anode electrode, said cathode panel and said anode panel being bonded to each other in their circumferential regions, (B) a focus-electrode control circuit, (C) a resistance element, and (D) a capacitor, each electron-emitting region comprising: (a) a cathode electrode being formed on a supporting member and extending in a first direction, (b) an insulating layer formed on the supporting member and the cathode electrode, (c) a gate electrode being formed on the insulating layer and extending in a second direction different from the first direction, (d) an insulating film formed on the insulating layer and the gate electrode, (e) a focus electrode formed on the insulating film, (f) a first opening portion formed through that portion of the focus electrode that is positioned in an overlap region of the cathode electrode and the gate electrode and through the insulating film positioned therebelow, (g) a plurality of second opening portions being formed through that portion of the gate electrode that is positioned in the overlap region of the cathode electrode and the gate electrode and communicating with the first opening portion, (h) a third opening portion being formed through the insulating layer and communicating with the second opening portion, and (i) an electron-emitting portion exposed in the bottom portion of the third opening portion, the focus electrode being connected to a first voltage-output portion of the focus-electrode control circuit through the resistance element, and the focus electrode being further connected to a second voltage-output portion of the focus-electrode control circuit through the capacitor, in which when the capacity of the capacitor is C