Backlight module

A backlight module, comprising a light source module, a reflective element, and a backplate, wherein

• the light source module is disposed on the backplate and comprises a plurality of light sources, a substrate, and a plurality of first positioning portions;
• wherein the plurality of light sources are arranged in arrays on the substrate, and the plurality of first positioning portions are configured on the substrate;
• the reflective element is disposed on the light source module and has a plurality of reflective cavities;
• wherein:
• the reflective element comprises a plurality of first walls, a plurality of second walls, and a plurality of positioning elements configured at a bottom;
• wherein the plurality of positioning elements respectively fit with the plurality of first positioning portions, and determine a relative position between the reflective element and the light source module;
• the plurality of reflective cavities are arranged in arrays;
• and
• the plurality of light sources are respectively accommodated in the plurality of reflective cavities;
• the backplate has a plurality of first fixing holes used for fixing the light source module and the reflective element to the backplate;
• and
• a plurality of fasteners;
• wherein the light source module further comprises a plurality of second fixing holes, and the reflective element further comprises a plurality of third fixing holes formed at a bottom of the first walls, a bottom of the second walls, or a combination thereof, and the bottom of the first walls comprises a bottom surface, and the bottom of the second walls comprises a bottom surface, and the bottom surface of the first walls and the bottom surface of the second walls contact against the substrate of the light source module;
• wherein the plurality of third fixing holes respectively correspond to the plurality of second fixing holes, and the plurality of second fixing holes respectively correspond to the plurality of first fixing holes, and the plurality of fasteners respectively pass through each of the first fixing holes, each of the second fixing holes, and each of the third fixing holes and fix the light source module and the reflective element to the backplate.