Polycyclic compound and organic light emitting device including same

The invention relates to a polycyclic compound and an organic light emitting device including the same. The polycyclic compound is represented by Formula 1: wherein, in Formula 1, ring CY1, ring CY2, and ring CY3 are each independently a C5-C30 carbocyclic group or a C1-C30 heterocyclic group; x1 is B, N, P, P (= O), P (= S), Al, Ga, As, C (R4), Si (R4), or Ge (R4); y1 and Y2 are each independently O, S, Se, B (R5), N (R5), C (R5) (R6), Si (R5) (R6), Ge (R5) (R6), Ga (R5), As (R5), P (R5), P (= O) (R5), P (= S) (R5), or Al (R5); and R1, R2, R3, b1, b2, and b3 are as provided herein. Formula 1 本发明涉及多环化合物和包括其的有机发光器件。多环化合物由式1表示，其中，在式1中，环CY1、环CY2、和环CY3各自独立地为C5-C30碳环基团或C1-C30杂环基团；X1为B、N、P、P(＝O)、P(＝S)、Al、Ga、As、C(R4)、Si(R4)、或Ge(R4)；Y1和Y2各自独立地为O、S、Se、B(R5)、N(R5)、C(R5)(R6)、Si(R5)(R6)、Ge(R5)(R6)、Ga(R5)、As(R5)、P(R5)、P(＝O)(R5)、P(＝S)(R5)、或Al(R5)；并且R1、R2、R3、b1、b2、和b3是如本文中所提供的。式1