Light cabinet suitable for forming light wall

A light cabinet, comprising:

• a plurality of light boards, adapted to form a first light-board array of the light cabinet;
• and
• a plurality of light-board controllers, configured one-to-one on the light boards, wherein the light-board controllers of the light boards in a first column of the first light-board array are mutually connected in series to form a first controller string, an output terminal of the first controller string is adapted to be connected electrically to an input terminal of a second controller string in a corresponding column of a second light-board array of another light cabinet, and an input terminal of the first controller string is adapted to be connected electrically to a first output terminal of a video data splitter or an output terminal of a third controller string in a corresponding column of a third light-board array of yet another light cabinet,
• wherein the light-board controllers in the first controller string are mutually connected in series through a low-voltage differential signaling interface.