A cholesteric liquid crystal display has pixel address circuits (84) with
an input (12) for receiving a data signal and a plurality of outputs, wherein
each output is for applying a pixel drive signal to a respective portion of the
liquid crystal material (20), and wherein the pixel drive signal for each
output is independently switchable by the pixel address circuit to each output.
This provides spatially-separated sub-pixels, and a number of the sub-pixels can
be addressed in order to provide a grey scale output for each pixel. Each pixel
drive signal can however be a two-level digital signal.
