Reflective polarizing film, light source assembly comprising same, and liquid crystal display device

The present invention relates to a reflective polarizing film, and more particularly, to a reflective polarizing film having improved brightness and degree of polarization, a light source module including the same, and a liquid crystal display device. The reflective polarizing film is characterized in that: the reflective polarizing film has a matrix; and a core layer having a plurality of polymer dispersions randomly arranged inside the matrix in the y-axis direction and the z-axis direction from among the x-axis direction, the y-axis direction, and the z-axis direction which are perpendicular to each other, the thickness of the core layer being the same as the thickness of the core layer when one surface of the core layer is cut in a y-z plane into five regions so that the thickness in the z-axis direction is the same. The difference between the area percentage of the polymer dispersion in the uppermost region or the lowermost region and the area percentage of the polymer dispersion in the central region am