This is a back light board with LED lighting and a snap on Aluminium Frame. The image is digitally printed on a Translite Film in high resolution. This is a replaceable film.
LED boards have the advantage of bright light that is uniformly diffused over the entire image. No patches of lights can be seen on such boards which is usually the problem with conventional back light boards.
These are also very light and compact at only 10mm thick compared to the conventional back light boards which are extremely bulky.