Compensation of a liquid crystal display can be achieved using a compensation structure, having, in the following order: a) a first o-plate; b) a first retarder; c) a liquid crystal cell; d) a second retarder; and e) a second o-plate. In one embodiment the groups have predefined layout characteristics and are sometimes amalgamated into functions. High current densities and thus high emitted light intensity are achieved by combining two types of conduction in one device: by combining space charge limited conduction and field-effect conduction or by combining ohmic conduction and field-effect conduction, thereby optimizing the current densities. The multiplexing device has a plurality of spatially separated beam splitters positioned parallel to and on a same side of a mirror. The interpolated optical response is a continuous and smooth function of measurement parameters, and it matches the theoretically-calculated optical response at the database-stored interpolation points.