Patent ID: 6473063
Filing Date: 2002-10-29
Classification: H01J

Abstract:
An electron source comprising a plurality of electron-emitting devices having a pair of electrodes and an electroconductive thin film disposed between the electrodes and containing an electron emitting region and a drive means for driving said plurality of electron-emitting devices, to form an image through electrons emitted from the electron-emitting devices, wherein said drive means applies a voltage above a threshold level to the electrodes of selected ones of said plurality of electron-emitting devices according to an image signal to cause the selected electron-emitting devices to emit electrons and also a voltage pulse for bringing said plurality of electron-emitting devices into a temporary high resistance state, said voltage pulse having a polarity reverse to that of the voltage for causing electron emission and a voltage rising or falling rate to zero volt of greater than 10V/sec, said voltage pulse being applied in a period when said voltage above the threshold level is not applied.