Display backlight module including photo-sensing device, LCD panel and display equipment

The invention provides a display backlight module comprising a photosensitive device, a liquid crystal display panel and a liquid crystal display unit. The liquid crystal display panel is used in the liquid crystal display unit, the liquid crystal display unit is provided with the display backlight module which comprises a first substrate, a second substrate, a liquid crystal layer, at least a photosensitive device and a visible light filtering layer. At least one photosensitive device is positioned on the photosensitive area of the first substrate and used to receive incident light, wherein,the photosensitive device comprises a first photosensitive element used to sense the incident light to produce a first current, and a second photosensitive element electrically connected with the first photosensitive element; the visible light filtering layer is arranged above the second photosensitive element arranged on the photosensitive area, and is used to filter the visible light of the incident light to make the second photosensitive element sense the filtered incident light to produce a second current.