A display device for text and images for attachment to translucent panes to which light of varying intensity is applied from the back of the panes, comprising - an electrical screen as a translucent display panel for the direct display of information consisting of a large number of electronically controlled pixels arranged in a grid-like manner, - LED lighting generating light sources located behind the rear in a direction of view, and - a Smart Window arranged behind the screen parallel to it, that is, a window that can be optically switched from transparent to translucent to opaque, wherein the smart window is arranged at such a distance that the light sources are positioned between the screen and the smart window, and wherein there is an optical sensor for detecting the incident light, by means of which the LED lighting is controlled in its intensity in such a way that the light intensity incident on the back of the screen is essentially constant, characterized in that the display device is designed so that a reversal of the viewing direction, that is, viewing from the rear of the screen, is possible by - the Smart Window comprising a large number of image points arranged in a grid-like manner, in particular designed as a TFT matrix display, the screen taking over the function of the Smart Windows and the sensor allowing light intensity measurement in both directions, or - a second smart window being present, which is positioned relative to the first smart window on the opposite side of the screen at a comparable distance as the first smart window, and a second light source is present which • is positioned between the screen and the second Smart Window, and • is used for background lighting when viewed in the opposite direction, and wherein the display device is prepared to carry out a mirror reflection with respect to a vertical axis in order to display the information mirror-symmetrically correct when the viewing direction is reversed. - an electrical screen as a translucent display panel for the direct display of information consisting of a large number of electronically controlled pixels arranged in a grid-like manner, - LED lighting generating light sources located behind the rear in a direction of view, and - a Smart Window arranged behind the screen parallel to it, that is, a window that can be optically switched from transparent to translucent to opaque, wherein the smart window is arranged at such a distance that the light sources are positioned between the screen and the smart window, and wherein there is an optical sensor for detecting the incident light, by means of which the LED lighting is controlled in its intensity in such a way that the light intensity incident on the back of the screen is essentially constant, characterized in that the display device is designed so that a reversal of the viewing direction, that is, viewing from the rear of the screen, is possible by - the Smart Window comprising a large number of image points arranged in a grid-like manner, in particular designed as a TFT matrix display, the screen taking over the function of the Smart Windows and the sensor allowing light intensity measurement in both directions, or - a second smart window being present, which is positioned relative to the first smart window on the opposite side of the screen at a comparable distance as the first smart window, and a second light source is present which • is positioned between the screen and the second Smart Window, and • is used for background lighting when viewed in the opposite direction, and wherein the display device is prepared to carry out a mirror reflection with respect to a vertical axis in order to display the information mirror-symmetrically correct when the viewing direction is reversed. • is positioned between the screen and the second Smart Window, and • is used for background lighting when viewed in the opposite direction, and