A picture
display device of the index type comprises a
cathode ray tube (1) and a display window with a display screen (10) having
phosphor patterns comprising parallel aligned
phosphor lines (R, G, B), and with an
index system (20) having a plurality of index elements (21) extending substantially parallel to the
phosphor lines. The
electron beam(s) (6, 7, 8) are deflected across the display screen (10) parallel to the phosphor lines and along and across the phospor lines. The
display device has no color selection
electrode in front of the display screen. The phosphor lines are arranged in the color sequence A-B-C-B-A-B-C, etc., where A, B and C stand for red, green and blue phosphors or any
mutation of said colors, and, in operation, the video lines overlap such that each B phosphor line is written in a single video line and each A and C phosphor line is written by two video lines.