Cathode ray tubes (CRT) are analog addressing displays because you can light a point on its surface applying a continuous electric or magnetic field to deflect electrons beam. Virtually, there is no limit on the resolution that CRT can reach. On the other hand, TFT-LCD, for example, are digital displays because you can only light discrete points of its surface. Moreover, you are limited to a fixed set of points, so resolution is limited and fixed.
Are there any technologies (old and new) that allows an analog addressing of a flat panel display with no fixed resolution? For example, a thin film of electroluminescent material between two continuous (versus discrete addressing lines in common displays) electrodes that allows addressing any point of its surface with analog signal without the need of an intermediate analog-digital conversion.