Display panel, display device, and control method of display device

A display device comprising:

• a display unit including a first surface through which light is emitted, a second surface opposite to the first surface, and a plurality of transmissive regions which transmits infrared light incident on the first surface;
• a first lens and a second lens disposed on the first surface of the display unit, wherein a plurality of channels, through which the light emitted from the first surface of the display unit passes, is defined in the first lens and the second lens;
• a plurality of infrared light sources disposed on the first surface of the display unit, wherein the plurality of infrared light sources emits infrared light;
• and
• a plurality of infrared cameras disposed on the second surface of the display unit to overlap the plurality of transmissive regions,
• wherein
• each of the first lens and the second lens includes a plurality of sub-lenses corresponding to the plurality of channels,
• the plurality of infrared cameras and the plurality of transmissive regions are disposed to overlap only some sub-lenses among the plurality of sub-lenses,
• the first lens includes a first sub-lens, a second sub-lens, a third sub-lens, and a fourth sub-lens each providing the channel,
• the plurality of transmissive regions includes a first transmissive region overlapping the first sub-lens and a second transmissive region overlapping the second sub-lens,
• the infrared light source includes a first infrared light source disposed on the first sub-lens and a second infrared light source disposed on the second sub-lens, and
• the plurality of infrared cameras includes a first infrared camera overlapping the first transmissive region and a second infrared camera overlapping the second transmissive region,
• wherein when a user gazes in a direction in which the third sub lens is positioned, a user's pupil is detected by the first infrared camera.