Electron gun for cathode-ray tube and method for manufacturing the same

Abstract

Among a plurality of electrodes composing an electron gun, at least one electrode is separated into two along a plane substantially perpendicular to a central axis, the two being a first cylindrical electrode and a second cylindrical electrode. Between the two electrodes, a connecting member in an approximate cylindrical shape having a slit is interposed, which electrically connects the first and second cylindrical electrodes with each other. The first and second cylindrical electrodes are fixed to a support rod via the connecting member and support portions provided on a side of the connecting member. Since a modulation magnetic field from outside a cathode-ray tube passes through the slit, eddy current loss can be reduced, whereby a desired electron beam modulation effect can be achieved. Furthermore, since no slit is formed in the first and second cylindrical electrodes, it is possible to avoid distortion of electrodes that is caused when slits are formed in the electrodes, as well as distortion of an electron lens due to the distortion of the electrodes.

Dependencies are inferred from the claim text.