Patent ID: 7259511

Claim:
A flat panel display device comprising: a first panel having a plurality of electron beam sources which are arranged in a matrix array, the electron beam sources being constituted of cathodes which emit electrons and control electrodes which are electrically insulated from the cathodes and control the quantity of electrons emitted from the cathodes, and a plurality of cathode lines and a plurality of control electrode lines which, in a state in which the cathodes and the control electrodes which constitute respective electron beam sources are respectively separated into a plurality of sets, electrically connect the cathodes and the control electrodes for the respective sets, the electron beam sources designated by respectively selecting some of the cathode lines and the control electrode lines serving to emit electrons; and a second panel having phosphors which emit light when impinged upon by electrons emitted from the electron beam sources corresponding to the arrangement of the electron beam sources; wherein the cathodes and the control electrodes have surfaces which are arranged on the first panel so as to lie in a first flat cross-sectional plane which is parallel to a surface of the second panel having phosphors, and, further, the control electrode lines have surfaces which are arranged so as to lie in a second cross-sectional plane which differs from and is spaced from the first cross-sectional plane; and wherein on a straight line which connects an arbitrary point on a cathode and a point in a portion of a control electrode closest to the point on the cathode, an insulation material is present.