Backlight source, liquid crystal module and display device

A backlight source comprising:

• a back plate comprising a side wall and a bottom plate, wherein the side wall and the bottom plate define a first groove;
• and
• a plurality of support structures arranged along a circumferential direction of the side wall and spaced apart from each other,
• wherein the support structure is detachably connected to the side wall, and extends toward a center of the first groove to form a support plane;
• and
• wherein:
• the support structure comprises a fixing part and a support part;
• the fixing part comprises a first fixing plate, a second fixing plate, and a third fixing plate that are connected sequentially in that order;
• the first fixing plate, the second fixing plate and the third fixing plate define an opening slot;
• the support part is plate-shaped;
• the support plane is a surface of the support part distal to the bottom plate;
• the support part is connected to the third fixing plate;
• an end of the side wall distal to the bottom plate is inserted into the opening slot;
• and
• an end of the first fixing plate distal to the second fixing plate is tilted in a direction away from the side wall.