Display module and display device

The invention relates to a display module and a display device. The display module comprises a display panel and a photosensitive device arranged on the non-display side of the display panel. The display panel comprises a driving circuit layer; the pixel definition layer is arranged on one side of the driving circuit layer; the color resistance layer is arranged on the side, away from the driving circuit layer, of the pixel definition layer, and the color resistance layer comprises a plurality of color resistors and black matrixes adjacent to the color resistors; the light reflecting layer is arranged on one side, close to the driving circuit layer, of the pixel defining layer, the black matrix is provided with a first light transmitting hole, and the first light transmitting hole and the photosensitive device are oppositely arranged in the thickness direction of the display module; wherein the light sensing device is provided with a light sensing surface facing the display panel, and the orthographic project