A backlight module comprises a backplate having a baseplate and side plates, a direct-lit LED array, edge-lit LED arrays and a light guide panel. The method comprises: from a server, supplying a media stream to clients at a first bitrate ; determining the network delivery requirement; and, in response to the network delivery requirements, modifying the supply of the media stream. A representative frame display control unit controls a display unit to display selection images for respective subframe sequences as representative images of the frame sequence. , and an th module of order links to an Nth module of order N. , and at least one of the first separator layer and the second separator layer includes flakes.