The present invention provides a display device including a nonvolatile memory circuit to which data can be added without increasing the number of manufacturing steps, and an electronic appliance using the display device. A display device of the present invention has a memory circuit that includes a memory element with a simple structure in which an organic compound layer is interposed between a pair of conductive layers. According to the present invention having the above mentioned structure, a display device having a nonvolatile memory circuit to which data can be added can be provided without increasing the number of manufacturing steps.