Patent ID: 7053544

Claim:
A display device comprising: a back substrate having a large number of cathode lines which extend in a first direction and are juxtaposed in a second direction which crosses the first direction, and a large number of control electrodes, which extend in the second direction, are juxtaposed in the first direction, are arranged over the cathode lines with a given gap therebetween, and have electron passing apertures at crossing portions between the control electrodes and the cathode lines, on an inner surface thereof; and a front substrate which is arranged to face the back substrate in an opposed manner with a given distance therebetween, and which has phosphors and an anode arranged at positions facing the electron passing apertures of the control electrodes and which constitute a display region, on an inner surface thereof; wherein distance holding members for maintaining a distance between the back substrate and the front substrate are provided inside of the-display region; wherein the phosphors are constituted of three colors and the cathode lines are formed into groups each consisting of three cathode lines corresponding to the three colors; wherein the large number of cathode lines include line portions, which extend in the first direction, and cathode portions which are integrally formed with the line portions at said crossing portions between the cathode lines and the control electrodes and which have an area larger than the area of the line portions; and wherein electron sources are formed on at least portions of the cathode portions which face the electron passing apertures of the control electrodes.