Patent ID: 11950500
Assignee: LG DISPLAY CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 29:
30. The organic light emitting device of claim 29, wherein the hole blocking layer includes an azine-based compound having the following structure of Chemical Formula 7 or a benzimidazole-based compound having the following structure of Chemical Formula 9:, wherein each of Y1 to Y5 is independently CR31 or nitrogen (N) and at least three among the Y1 to Y5 is nitrogen, wherein R31 is a C6˜C30 aryl group; L is a C6˜C30 arylene group; R32 is a C6˜C30 aryl group or a C5˜C30 hetero aryl group; R33 is hydrogen or two adjacent R32 form a fused aromatic ring; r is 0 (zero) or 1, s is 1 or 2 and t is an integer of 0 (zero) to 4;, wherein Ar is a C10˜C30 arylene group; R41 is a C6˜C30 aryl group or a C5˜C30 hetero aryl group; and R42 is a C1˜C10 alkyl group or a C6˜C30 aryl group.