Liquid-crystal active maxtrix array device

An active matrix array device comprising an array of individually addressable matrix elements and driver circuitry for providing address signals to the matrix elements, the driver circuitry including digital to analogue converter circuitry for providing a first number (X) of outputs for application in parallel to a corresponding first number of matrix elements, wherein the driver circuitry is arranged alongside one edge of the array of matrix elements, and comprises:

• a multiple voltage level generator circuit providing a plurality of analogue voltage levels (V0-VM-1) for addressing the matrix elements, the plurality of levels being provided on outputs distributed substantially along the length of the one edge;
• a group of switches associated with, and located at, each output of the voltage level generator circuit;
• and
• an output bus arranged alongside the one edge and having the first number (X) of lines, the group of switches selectively coupling the associated voltage level generator circuit output to each line of the output bus.