A picture display device is disclosed comprising a suitable substrate
carrying a plurality of color cells wherein each color cell is capable of
exhibiting a change in its external color from a first color to a second
color and/or of emitting electromagnetic energy at least in the form of
visible light. Each said color cell comprises color change and/or
luminescent means characterized in enabling said cell to exhibit a color
change from said first color to said second color and/or in enabling said
cell to emit electromagnetic energy at least in the form of visible light
in correlation to the application of electrical current and/or voltage to
the said cell; suitable electrical connections electrically connectable to
a suitable electrical power supply and adapted to provide said color cell
with a suitable electrical current and/or voltage; said device
characterized in being substantially disposable.
