Display device, screen display method, and recording medium

A display device includes: a display; a touch panel disposed on the display; a memory that stores screen configuration information essentially including information of a base area of a fixed size and an extra area of an unfixed size; a retrieving portion that retrieves the screen configuration information therefrom; a display processor that allocates the base area in an image displayable area of the display on the basis of a reference point of the screen of the display and displays a first screen in the allocated base area, and that further allocates the extra area in an area other than the base area and displays a second screen in the allocated extra area when the image displayable area of the display is larger than the base area; and a judgment portion that judges whether or not a user stretches the extra area toward the base area on the touch panel. 提供种显示装置、画面显示方法以及图像处理装置，即使操作面板的显示部的画面尺寸多样化，也无需扩大、缩小操作画面或者准备匹配画面尺寸的其它画面等，能够容易地对应所述画面尺寸的多样化。从存储包含关于作为第1画面的显示区域的固定尺寸的基本区域和作为第2画面的显示区域的不固定尺寸的扩展区域的信息的画面设定信息的存储单元读出画面