Abstract: This invention relates generally to frame-less luminous displays such as electroluminescent, OLED, and LED displays that are releaseably mounted to a surface using adjustable, removable and/or replaceable adapters. In one embodiment, the invention relates to a thin, frame-less luminous display device which comprises a plurality of thin translucent or transparent layers on which an opaque, graphic layer has been applied and which is illuminated using an electroluminescent light source configured between said transparent or translucent layers. The display device may be further adapted to be releaseably mounted on a surface such as pane of glass using adjustable, removable suction cup type mounting devices.