Backlight module, display module and display device

The utility model provides a backlight module, a display module and a display device.The backlight module comprises a light guide module and a white light module, the light guide module comprises a light guide plate, and the light guide plate is provided with at least one light incident side; the white light module comprises an excitation light source and a light excitation quantum film; the excitation light source directly faces at least one light incident side of the light guide plate, the light excitation quantum film is arranged between the light guide plate and the excitation light source, the excitation light source is used for emitting a light source to excite the light excitation quantum film to generate white light, and the white light is emitted from the light emergent side of the light guide plate after entering the light guide plate. According to the backlight module provided by the utility model, the white light module is arranged on at least one light incident side of the light guide module, so that the excitation light source of the white light module is used for emitting a light source, and the excitation light is used for exciting the quantum film to generate high-color-gamut white light backlight, so that the high-color-gamut requirement of a customer is met.