Patent ID: 7319286

Claim:
A display device comprising: a front substrate having an anode and fluorescent materials on an inner surface thereof; a back substrate having a plurality of cathode lines which extend in one direction, are arranged in parallel in another direction which crosses the one direction and include electron sources, and a plurality of control electrodes which cross the cathode lines in a non-contact state within a display region, extend in the another direction, are arranged in parallel in the one direction and allow electrons from the electron sources to emit to the front substrate side, on an inner surface thereof, the back substrate being arranged to face the front substrate in an opposed manner with a given gap therebetween; and an outer frame for holding the given gap which is interposed between the front substrate and the back substrate and extends around the display region; wherein an inner frame is arranged outside the display region and inside the outer frame, and with respect to a height of the outer frame and a height of the inner frame in a direction which is orthogonal to surfaces of the front substrate and the back substrate, a height of at least one portion of the inner frame is set to be lower than a height of the outer frame; wherein a getter is provided between the outer frame and the inner frame; and wherein a difference in the height between the inner frame and the outer frame is not greater than a size of the getter.