Display device

A display device comprising a back substrate which has a plurality of cathode lines which extend in one direction, are arranged in parallel in another direction which crosses one direction and include electron sources respectively, and a plurality of control electrodes which cross the cathode lines in a non-contact manner within a display region, extend in another direction and are arranged in parallel in one direction on an inner surface thereof, and

• a front substrate which has anodes and phosphors on an inner surface thereof and faces the back substrate with a given distance therebetween, wherein
• the control electrodes are formed of plate-like control electrodes, the plate-like control electrode includes electron passing holes which allow electrons emitted from the electron sources to pass therethrough in the display region, includes a portion which is fixed to the back substrate in the external non-display region, and includes protrusions which protrude toward the back substrate side in the display region and in the external non-display region, and
• at least in a portion of the external non-display region, the protrusions are formed such that a gap between the neighboring protrusions as measured in the extending direction toward an end portion in the extending direction of the plate-like control electrode is set substantially equal and an arrangement pitch in the extending direction is gradually increased.

A display device comprising a back substrate which has a plurality of cathode lines which extend in one direction, are arranged in parallel in another direction which crosses one direction and include electron sources respectively, and a plurality of control electrodes which cross the cathode lines in a non-contact manner within a display region, extend in another direction and are arranged in parallel in one direction on an inner surface thereof, and

• a front substrate which has anodes and phosphors on an inner surface thereof and faces the back substrate with a given distance therebetween, wherein
• the control electrodes are formed of plate-like control electrodes, the plate-like control electrode includes electron passing holes which allow electrons emitted from the electron sources to pass therethrough in the display region, includes a portion which is fixed to the back substrate in the external non-display region, and includes protrusions which protrude toward the back substrate side in the display region and in the external non-display region, and
• at least in a portion of the external non-display region, the protrusions are formed such that a gap between the neighboring protrusions as measured in the extending direction toward an end portion in the extending direction of the plate-like control electrode is gradually decreased and an arrangement pitch in the extending direction is set substantially the same.

A display device comprising a back substrate which has a plurality of cathode lines which extend in one direction, are arranged in parallel in another direction which crosses one direction and include electron sources respectively, and a plurality of control electrodes which cross the cathode lines in a non-contact manner within a display region, extend in another direction and are arranged in parallel in one direction on an inner surface thereof, and

• a front substrate which has anodes and phosphors on an inner surface thereof and faces the back substrate with a given distance therebetween, wherein
• the control electrodes are formed of plate-like control electrodes, the plate-like control electrode includes electron passing holes which allow electrons emitted from the electron sources to pass therethrough in the display region, includes a portion which is fixed to the back substrate in the external non-display region, and includes protrusions which protrude toward the back substrate side in the display region and in the external non-display region, and
• at least in a portion of the external non-display region, the protrusions are formed such that a gap between the neighboring protrusions as measured in the extending direction toward an end portion in the extending direction of the plate-like control electrode is gradually decreased and an arrangement pitch in the extending direction is gradually increased.