a flexible display element capable of being rolled up and unfurled , comprises a back plate covering a back side of the display element , wherein the back plate comes into contact with the back side of the display element when the display element is rolled up , and at least a central portion of the back plate is separated from the display element to support the display element in a flat shape when the display element is unfurled . thus , the display element and the back plate can be rolled up and carried with a simple configuration of the display element and the back plate , and the display element can be supported in a flat shape when unfurled . therefore , it is possible to provide a flexible display element having high portability , ease of rolling , and retention of flatness during periods of use .