To provide a display panel which can easily display objects by printing of a display surface and eliminates the need for labor, such as classification disposal, in discarding the panel.

At least a portion of the front surface of at least one liner of both front and rear surface liners of the display panel 1 composed with the display surface by a corrugated fiberboard having the liners on the front and rear surfaces is formed with a coating layer consisting of an under-coating agent for impregnating the front surface of this liner with the ink for printing in an approximately perpendicular direction thereof.