An light source module according to an embodiment of the present invention includes: a substrate; a light source which is provided on the substrate; a reflective sheet which is stacked on the substrate; an optical sheet which is stacked on the reflective sheet and has a protruding pattern; an optical resin which is formed on the protruding pattern; and a light diffusion sheet which is stacked on the optical resin, and the light source module may implement a surface emission image, and diffuse light so as to satisfy regulations on visible angle light distribution.