Electron beam apparatus and image display apparatus using the same

摘要

There is provided an electron beam apparatus which improves the instability of an electron emission characteristic and provides a high efficient electron emission characteristic. The electron beam apparatus includes: an insulating member (3,4) having a recess (7) on its surface; a cathode (6A) having a protruding portion extending over the outer surface of the insulating member and the inner surface of the recess; a gate (5) positioned at the outer surface of the insulating member in opposition to the protruding portion; and an anode positioned in opposition to the protruding portion through the gate.