Patent ID: 6756725
Filing Date: 2004-06-29
Classification: H01J

Abstract:
A color selection apparatus for a cathode ray tube, the color selection apparatus comprising:a mask having a short axis and a long axis, the mask being provided with a plurality of beam-guide holes; and a frame combined with the mask such that the mask is kept in a tensioned state, wherein the mask is tensioned in a direction of the long axis while being supported by the frame; and wherein said mask comprises a plurality of strips extending in a direction of the long axis and spaced apart from each other by a predetermined distance, beam guide holes arranged in a plurality of lines extending in the direction of the long axis, each line of said beam guide holes being disposed between a respective pair of said strips immediately adjacent to said each line of said beam guide holes, and real bridges disposed between each of said strips, each of said real bridges being disposed alone one of the lines of said beam guide holes and between a respective pair of immediately adjacent beam guide holes in said one of the lines of said beam guide holes.