Organic light-emitting device

An organic light-emitting device comprising:

• a substrate;
• a display unit on the substrate;
• and
• an encapsulation layer covering the display unit,
• the encapsulation layer having an alternating stack structure of an organic layer and an inorganic layer, and
• the organic layer comprising a polymer polymerized from monomers of Formula 1 and Formula 2 below:
• in Formulae 1 and 2,
• R1 to R6 are each independently a hydrogen atom, a deuterium atom, or a C1-10 alkyl group,
• X1 is a C1 to C30 alkyl group, a C6 to C20 aromatic ring-containing C1 to C30 alkyl group, or C6 to C20 cyclicalkyl ring-containing C1 to C30 alkyl group,
• X2 is a C1 to C30 alkylene group, a C6 to C20 aromatic ring-containing C1 to C30 alkylene group, or C6 to C20 cyclicalkyl ring-containing C1 to C30 alkylene group, and
• I is 0 or 1.