Light-emitting device and electronic apparatus including the same

A light-emitting device comprising:

• a first electrode;
• a second electrode facing the first electrode;
• and
• an organic layer between the first electrode and the second electrode, wherein
• the organic layer comprises:
• m emitting units;
• and
• m−1 charge generation units, each arranged between every two adjacent emitting units among the m emitting units,
• each of the m emitting units comprises a first subpixel, a second subpixel, and a third subpixel,
• m is an integer of 2 or more,
• the m emitting units comprise a first emitting unit and a second emitting unit,
• the first emitting unit comprises a 1-1 emission layer, a 2-1 emission layer, and a 3-1 emission layer,
• the 1-1 emission layer is arranged on the first subpixel of the first emitting unit and emits first-color light,
• the 2-1 emission layer is arranged on the second subpixel of the first emitting unit and emits second-color light,
• the 3-1 emission layer is commonly arranged over the first subpixel of the first emitting unit, the second subpixel of the first emitting unit, and the third subpixel of the first emitting unit and emits third-color light,
• the 1-1 emission layer comprises a 1-1 host,
• the 2-1 emission layer includes a 2-1 host,
• the 3-1 emission layer includes a 3-1 host, and
• a lowest unoccupied molecular orbital (LUMO) energy (LUMO1-1) level of the 1-1 host, a LUMO energy (LUMO2-1) level of the 2-1 host, and a LUMO energy (LUMO3-1) level of the 3-1 host satisfy Conditions a1 and b1:
• LUMO1-1<LUMO3-1 [Condition a1]
• LUMO2-1<LUMO3-1. [Condition b1]