EINZEILEN-ELEKTRONENROHRANORDNUNG

An in-line type electron gun assembly for a color picture tube which is designed to emit a central electron beam and two side electron beams running along both sides of the central electron beam and can suppress coma aberration, thereby providing a highly resolved color picture and enable a high quality color picture tube to be manufactured at a low cost, and wherein a main convergence electrostatic lens is formed by a pair of serially arranged electrode means whose components are formed integrally to handle the respective electron beams; at least one of the paired electrode means is composite electrode consisting of a plurality of electrode plates each bored with three openings corresponding to said electron beams; and the axes of both side openings of the respective electrode plates of at least the composite one of said electrode means are displaced from the axis of the central electron beam at a progressively larger rate according as the position of the respective electrode plates is drawn nearer to the phosphor screen.