Display device for a portable data carrier

Abstract

The invention relates to a portable data carrier having a display device. This data carrier contains a microprocessor and storage devices associated with the microprocessor as well as means for displaying data stored in the storage devices associated with the microprocessor. In addition, the data carrier contains a display controller for controlling the display means and an energy supply unit for supplying at least the display unit and its controller with energy. Such a data carrier is to be improved so as to reduce the energy demand for the display unit. This is obtained by a nonvolatile memory disposed separately from the microprocessor and its storage device, said memory being associated with the controller of the display means and containing the data intended for display.

Dependencies are inferred from the claim text.