Multi-electron beam source with a cut off circuit and image device using the same

An image display device comprising:

• an electron-emitter including a plurality of electron-emitting elements provided two-dimensionally in a matrix-like arrangement on a substrate, opposing terminals of said electron-emitting elements arranged adjacently in the column direction thereof being electrically connected to each other, terminals on the same side of all said electron-emitter elements in the same row being electrically connected, and said plurality of electron-emitting elements being arranged in "m" rows, "m" representing a number of two or more;
• a driving circuit for driving said electron-emitter;
• grid electrodes for modulating electron beams emitted from said electron-emitting elements;
• cut-off means for cutting off the electron beams caused by spike noises superposed on a driving pulse generated by said driving circuit;
• and
• a fluorescent material target for making an image visible by irradiation of electron beams provided above said electron-emitter.

A multi-electron beam source, comprising:

• L rows of a plurality of electron-emitting elements, each electron-emitting element of the same row being electrically connected in parallel with two wiring electrodes, formed on a substrate;
• a driving circuit for applying driving signals independently to the respective L electron-emitting element rows;
• a grid electrode for modulating electron beams emitted from said electron-emitting elements;
• and
• means for cutting off the electron beams emitted from said electron-emitting elements caused by spike-like voltage superposed upon a driving signal generated by said driving circuit.

An image display device, comprising:

• a multi-electron beam source including L rows of a plurality of electron-emitting elements, each electron-emitting element of the same row being electrically connected in parallel with two Wiring electrodes, formed on a substrate;
• a driving circuit for applying driving signals independently to the respective L electron-emitting element rows;
• a grid electrode for modulating electron beams emitted from said electron-emitting elements;
• and
• means for cutting off the electron beams emitted from said electron-emitting elements caused by spike-like voltage superposed upon a driving signal generated by said driving circuit;
• and
• a fluorescent material target for making an image visible by irradiation of electron beams provided above said multi-electron beam source.