A display device for a vehicle, including: a rear imaging section that captures a rear image; a rear lateral imaging section that captures rear lateral images; and a control section that generates a combined image in which a rear processed image obtained by processing the rear image with a first parameter, and rear lateral processed images obtained by processing rear lateral images with a second parameter, are combined, wherein the control section further identifies an object existing in the rear image or the rear lateral images; acquires relative information including relative position and relative speed of the object with respect to the vehicle, and blind spot regions of the combined image; and, based thereon, if the object will disappear from the combined image due to entering into the blind spot regions, changes the blind spot regions by adjusting the first and second parameters.