The present invention provides an assembly structure for a liquid crystal module, which is extended to form installation margins by increasing the size of a liquid crystal panel. The installation margins are directly formed with a plurality of installation holes for connecting with a plurality of corresponding positioning holes of a backlight module by positioning elements. Thus, the liquid crystal panel and the backlight module can directly construct a liquid crystal module, without any front frame. As a result, the size of the entire liquid crystal module in relation to X, Y and Z axes can be reduced, the assembly structure for the entire liquid crystal module can be simplified, and the installation cost of the entire liquid crystal module can be saved, while the compactness and the lightweight design of a liquid crystal display can be carried out.