▎ 摘　　要

NOVELTY - The utility model claims a backlight module, comprising a first graphene heat conducting plastic plate and a second graphene heat conducting plastic plate, the second graphite heat conducting plastic plate is detachably connected on the first graphene heat conducting plastic plate; the first graphene heat-conducting plastic plate is provided with a mounting area; the mounting area is used for mounting the light source; the second graphene heat conducting plastic plate is provided with a light through hole; the light through hole has a first opening and a second opening; the circumferential edge of the first opening is provided with an abdication groove; the inner part of the abdication groove and the inner side of the first opening form a placing space; the placing space is used for placing the optical film group; the second opening is set around the mounting area; the utility model further claims a liquid crystal display device, which not only reaches the purpose of reducing the weight of the backlight module and ensures the radiating effect of the backlight module, but also reaches the purpose of convenient maintenance light source.