Backlight source, method for producing the same and use of the same, display device

A method for producing a backlight source, the method comprising:

• mounting an LED light source configured to emit a visible light on a light incidence side of a light guide plate of the backlight source;
• mixing infrared quantum points into photo curable adhesives;
• and
• dripping an infrared quantum point droplet mixed with the infrared quantum points onto at least one face of the light guide plate,
• wherein the light guide plate is an edge lighting light guide plate and the infrared quantum point is arranged on a side of the light guide plate opposite to the light incidence side such that it is able to receive a first part of the visible light emitted from the LED light source and emit an infrared light back to the light guide plate, and a second part of the visible light emitted from the LED light source exits the light exit face of the light guide plate along with the infrared light.