Display device and method of manufacturing display device

A method of manufacturing a display device having a display area including a first pixel region, a second pixel region, and a third pixel region, the method comprising:

• a first electrode formation step of forming a first electrode;
• a first photoelectric conversion layer formation step of forming a first photoelectric conversion layer including a first light-emitting layer that emits light of a first color, a second light-emitting layer that emits light of a second color that differs from the first color, and a third light-emitting layer that emits light of a third color that differs from the first color and the second color;
• a first electric charge injection layer formation step of forming a first electric charge injection layer having an opposite polarity from the first electrode;
• a second electric charge injection layer formation step of forming a second electric charge injection layer having a same polarity as the first electrode;
• a second photoelectric conversion layer formation step of forming a second photoelectric conversion layer including a fourth light-emitting layer;
• and
• a second electrode formation step of forming a second electrode having an opposite polarity from the first electrode, wherein
• the first photoelectric conversion layer formation step provides the first light-emitting layer in the first pixel region, the second light-emitting layer in the second pixel region, and the third light-emitting layer in the third pixel region,
• the first electric charge injection layer formation step provides the first electric charge injection layer across the entire display area,
• the second electric charge injection layer formation step provides the second electric charge injection layer only in the third pixel region, and
• the second photoelectric conversion layer formation step provides the fourth light-emitting layer at least in the third pixel region.