Display device employing special purpose monograms

Claim 1

In a device for displaying at least the first and second letters of the days of the week comprising: a first array of electrically controllable elongate display elements selectively energizable in different combinations corresponding to the first letter of any day of the week, a second array of electrically controllable elongate display elements selectively energizable in different combinations corresponding to the second letter of any day of the week, said elements of said first and said second arrays including six linear elements forming an oblong substantially upright frame and a seventh linear element extending horizontally across said frame to divide it into an upper and lower half, and said first array further including two V-shaped elements disposed in said halves in mutually inverted relationship with vertices pointing toward said seventh element, the improvement comprising, an eight linear display element in said second array extending laterally between the linear elements which form the sides of the lower half of said second array to divide it into two substantially equal parts, whereby the first letters of the days of the week may be formed as uppercase letters, the second letters of some days of the week may be about one-half as high as the first letters of the days of the week and the second letter of at least one day of the week may be formed as a lowercase letter by selectively energizing the display elements of said first and second arrays.