In one general aspect, the subject matter described in this specification can be embodied in a display case door that includes an insulated panel assembly that is transparent to visible light. The door further includes a door frame extending about and secured to a peripheral edge of the insulated panel assembly, an electronic display overlaying the insulated panel assembly, and at least one lift-off hinge including a first hinge component attached to a longitudinal side of the door frame, and a second hinge component coupled to the electronic display.

A beverage holder with an insulating sleeve holds a beverage container and a magnetic mount to magnetically secure the insulating sleeve with the beverage container therein to a ferromagnetic support structure. The magnetic mount comprises an exterior housing located outside the insulating sleeve and on a lateral wall of the insulating sleeve. A magnet is carried by the exterior housing and located outside of the insulating sleeve. An interior backing is located on an interior of the insulating sleeve and fastened to the exterior housing through the insulating sleeve. The exterior housing and the interior backing sandwich a portion of the lateral wall of the insulating sleeve.

Disclosed is a display module including a transparent display panel and a frame to fix a side of the transparent display panel, wherein the frame has a communication unit to receive data from the outside, a controller to process the received data and to output a drive command corresponding to the processed data and a display drive unit to drive the transparent display panel in response to the drive command from the controller. A display system includes a system body and a display module detachably mounted in the system body.

A beverage holder with an insulating sleeve holds a beverage container and a magnetic mount to magnetically secure the insulating sleeve with the beverage container therein to a ferromagnetic support structure. The magnetic mount comprises an exterior housing located outside the insulating sleeve and on a lateral wall of the insulating sleeve. A magnet is carried by the exterior housing and located outside of the insulating sleeve. An interior backing is located on an interior of the insulating sleeve and fastened to the exterior housing through the insulating sleeve. The exterior housing and the interior backing sandwich a portion of the lateral wall of the insulating sleeve.

Disclosed in the present invention is a transparent display device. The transparent display device according to the present invention comprises: a frame having first and second apertures; a transparent display panel disposed on the first aperture of the frame; and a control module, disposed on the second aperture of the frame, for controlling the transparent display panel, wherein the frame is installed to cover the front surface of the door unit of a certain product or is separated from the front surface of the door unit of the certain product, and wherein an extension frame extended from an edge of the frame toward the door unit of the certain product can engage with the side of the edge of the door unit of the certain product.

Disclosed is a display module including a transparent display panel and a frame to fix a side of the transparent display panel, wherein the frame has a communication unit to receive data from the outside, a controller to process the received data and to output a drive command corresponding to the processed data and a display drive unit to drive the transparent display panel in response to the drive command from the controller. A display system includes a system body and a display module detachably mounted in the system body.

Disclosed is a display module including a transparent display panel and a frame to fix a side of the transparent display panel, wherein the frame has a communication unit to receive data from the outside, a controller to process the received data and to output a drive command corresponding to the processed data and a display drive unit to drive the transparent display panel in response to the drive command from the controller. A display system includes a system body and a display module detachably mounted in the system body.

A digital display system includes a transparent outer protective panel, a transparent inner protective panel, and a translucent digital video display located between the outer and inner protective panels. An integrated media player is operably connected to the translucent digital video display so that full-motion videos displayed on the translucent digital video display are viewed through the outer protective panel and items can be viewed through the translucent digital video display. The digital display system can be incorporated into any environment where a product is located behind a glass enclosure such as freezers, coolers, security glass, jewelry cases, liquor cases, cosmetic cases, and the like. In retail environments, the digital display systems can also be incorporated into entry doors, windows, drive-thru windows, teller windows, and any other location where there is traditionally glass and you want to focus consumer attention obstructing the customer's line of site.

Disclosed is a display module including a transparent display panel and a frame to fix a side of the transparent display panel, wherein the frame has a communication unit to receive data from the outside, a controller to process the received data and to output a drive command corresponding to the processed data and a display drive unit to drive the transparent display panel in response to the drive command from the controller. A display system includes a system body and a display module detachably mounted in the system body.

Disclosed is a display module including a transparent display panel and a frame to fix a side of the transparent display panel, wherein the frame has a communication unit to receive data from the outside, a controller to process the received data and to output a drive command corresponding to the processed data and a display drive unit to drive the transparent display panel in response to the drive command from the controller. A display system includes a system body and a display module detachably mounted in the system body.