公开(公告)号：US11335857B2

公开(公告)日：2022-05-17

申请号：US16677576

申请日：2019-11-07

Applicant: Samsung Display Co., Ltd.

Inventor： Seulong Kim ,  Pilgu Kang ,  Jiyoung Kwon ,  Taekyung Kim ,  Soon-Chul Chang

IPC: H01L51/50 ,  H01L51/00 ,  C07C15/28 ,  C07D213/06 ,  C09K11/06 ,  H01L27/32 ,  H01L51/52

Abstract: Provided are an organic electroluminescence device and a display device including the same. The organic electroluminescence device includes a polycyclic compound represented by Formula 1 in a hole blocking layer and at least one of a first light emitting layer and an electron transport layer, wherein each of Y1 to Y5 and Y11 to Y15 is independently CH or N, at least four of Y1 to Y5 are CH, at least four of Y11 to Y15 are CH, and R1, R2, and R3 are as disclosed in the description.

公开(公告)号：US11925045B2

公开(公告)日：2024-03-05

申请号：US16881591

申请日：2020-05-22

Applicant: Samsung Display Co., Ltd.

Inventor： Seulong Kim ,  Taekyung Kim ,  Pilgu Kang ,  Jiyoung Kwon ,  Eungyoung Park ,  Jiyoung Song ,  Soon-Chul Chang ,  Dongseob Jeong

IPC: H10K50/13 ,  H10K50/18 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/805 ,  H10K59/32

CPC classification number: H10K50/13 ,  H10K50/156 ,  H10K50/157 ,  H10K50/166 ,  H10K50/171 ,  H10K50/18 ,  H10K50/805 ,  H10K59/32

Abstract: A light emitting device includes a first electrode, a first stack on the first electrode, a first charge generation layer on the first stack, a second stack on the first charge generation layer, and a second electrode on the second stack. The first stack includes a first light emitting layer and a plurality of first organic layers, and the second stack includes a second light emitting layer and a plurality of second organic layers. Among the plurality of first organic layers and the plurality of second organic layers, at least one of organic layers adjacent to the first light emitting layer and the second light emitting layer includes a light emitting material.