Display device

A display device according to an embodiment of the present invention comprises: a display panel having flexibility; an accommodating part connected with one end of the display panel and accommodating the display panel to lead in and out the display panel; an expansion portion connected to the other end of the display panel and disposed so as to face one side surface of the accommodating portion in the first direction; and a display driving integrated circuit receiving the image data and the control signal from the host and providing a data signal to the display panel. The display driving integrated circuit receives the smart size change signal from the host and includes a data processing section that sets an inactive area of the display panel based on the smart size change signal. 本发明的实施例涉及的显示装置包括：显示面板，具有柔性；容纳部，与显示面板的一端连接，容纳显示面板来引入和引出显示面板；扩展部，与显示面板的另一端连接，被配置成在第一方向上与容纳部的一侧面相向；以及显示驱动集成电路，从主机接收图像数据和控制信号，向显示面板提供数据信号。显示驱动集成电路从主机接收智能尺寸变更信号并包括基于智能尺寸变更信号来设定显示面板的非激活区域的数据处理部。