Multicolor display elements are disclosed that are adapted to full color
electric papers, which comprises a display electrode, counter electrode,
electrolyte, and display layer, wherein the counter electrode is disposed
oppositely to the display electrode, the electrolyte is filled into a
space provided between the display electrode and the counter electrode,
the display layer is disposed on the surface, which faces the counter
electrode, of the display electrode, the display layer contains plural
electrochromic compositions in a condition that the plural electrochromic
compositions are separated into plural layers within the display layer or
are mixed together within the display layer, and at least one of
threshold voltage for coloring condition and threshold voltage for
decoloring condition, or at least one of charge amount required for
coloring into a sufficient color density and charge amount required for
sufficiently decoloring, are substantially different each other between
the plural electrochromic compositions.