Display module

A display module comprising:

• first, second, and third light emitting areas;
• a non-light-emitting area;
• a light receiving area;
• a base layer;
• a first electrode on the base layer, and comprising:
• a first-first light emitting electrode corresponding to the first light emitting area;
• a first-second light emitting electrode corresponding to the second light emitting area;
• a first-third light emitting electrode corresponding to the third light emitting area;
• and
• a first light receiving electrode corresponding to the light receiving area;
• an optical compensation layer directly on the first light receiving electrode, and not overlapping with the first-first, first-second, and first-third light emitting electrodes;
• a hole transport region comprising:
• a first hole transport region on the first-first light emitting electrode, the first-second light emitting electrode, and the first-third light emitting electrode;
• and
• a second hole transport region on the optical compensation layer;
• a first light emitting layer on the first hole transport region to correspond to the first light emitting area, and configured to emit first-first light to travel from the first-first light emitting electrode to the first hole transport region;
• a second light emitting layer on the first hole transport region to correspond to the second light emitting area, and configured to emit first-second light to travel from the first-second light emitting electrode to the first hole transport region;
• a third light emitting layer on the first hole transport region to correspond to the third light emitting area, and configured to emit first-third light to travel from the first-third light emitting electrode to the first hole transport region;
• a light receiving layer on the second hole transport region, and configured to absorb second light traveling from the second hole transport region to the optical compensation layer;
• an electron transport region on the first, second, and third light emitting layers and the light receiving layer;
• and
• a second electrode on the electron transport region.