The LED module is to arrange the LED (light emitting diode) together according to a certain rule and then encapsulate it, plus some waterproof treatment products, that is, the LED module. The front surface of the quadrilateral module may be provided with a decorative structure for blurring the splicing boundary of the module. LED module COB light source LED surface light source utility model from the visual and optical point of view, let the straight line form a short line of misalignment, using the linearity of the vision, the human eye can not take into account the misalignment when scanning from top to bottom (or moving in the left and right direction) Strips will inevitably form countless dislocations of discontinuous short line segments, thus completely eliminating the LED display mosaic phenomenon caused by the gap between the modules.