Patent ID: 7180246
Filing Date: 2007-02-20
Classification: G09G,H01J

Abstract:
1. An image display device comprising: a face substrate having an anode and phosphors on an inner surface thereof; a back substrate having a plurality of cathode lines which extend in one direction and are arranged in parallel in another direction which crosses one direction and having electron sources, and control electrodes being arranged to face the cathode lines in a non-contact manner, the control electrodes forming a plurality of electron passing holes which allow electrons emitted from the electron sources to pass therethrough toward an inner surface side of the front substrate in regions thereof which respectively face the electron sources on an inner surface thereof, the back substrate being arranged to face the front substrate in an opposed manner with a given distance therebetween; dark current detection means having a dark current detection electrode in the vicinity of the anode; and a sealing frame body which is inserted between the front substrate and the back substrate in a state that the sealing frame body surrounds a screen display region and holds the given distance.