公开(公告)号：US20190189702A1

公开(公告)日：2019-06-20

申请号：US16283213

申请日：2019-02-22

Applicant: LG Display Co., Ltd.

Inventor： Eun-Jung Park ,  Kwan-Soo Kim ,  Han-Byeol Seok ,  Seok-Hyun Kim

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L27/3211 ,  H01L27/3248 ,  H01L51/5004 ,  H01L51/5044 ,  H01L51/5206 ,  H01L2251/552

Abstract: An organic light-emitting device, including: a substrate including a blue sub-pixel, a green sub-pixel, and a red sub-pixel, each blue sub-pixel, green sub-pixel, and red sub-pixel respectively including an anode, a first common layer, a second common layer, and a cathode, in the blue sub-pixel, a blue light-emitting layer between the first common layer and the second common layer, in the green sub-pixel, a green light-emitting layer between the first common layer and the second common layer, and in the red sub-pixel, a red light-emitting layer between the first common layer and the second common layer, wherein HOMO energy levels of the blue, green, and red light-emitting layers are each lower than a HOMO energy level of the first common layer, and wherein the HOMO energy level of the green light-emitting layer is 0.2 eV or more higher than the HOMO energy level of the blue light-emitting layer.

公开(公告)号：US20180122870A1

公开(公告)日：2018-05-03

申请号：US15794395

申请日：2017-10-26

Applicant: LG Display Co., Ltd.

Inventor： Eun-Jung Park ,  Kwan-Soo Kim ,  Han-Byeol Seok ,  Seok-Hyun Kim

IPC: H01L27/32 ,  H01L51/50 ,  H01L51/52

CPC classification number: H01L27/3211 ,  H01L27/3248 ,  H01L51/5004 ,  H01L51/5044 ,  H01L51/5206 ,  H01L2251/552

Abstract: An organic light-emitting device, including: a substrate including a blue sub-pixel, a green sub-pixel, and a red sub-pixel, each blue sub-pixel, green sub-pixel, and red sub-pixel respectively including an anode, a first common layer, a second common layer, and a cathode, in the blue sub-pixel, a blue light-emitting layer between the first common layer and the second common layer, in the green sub-pixel, a green light-emitting layer between the first common layer and the second common layer, and in the red sub-pixel, a red light-emitting layer between the first common layer and the second common layer, wherein HOMO energy levels of the blue, green, and red light-emitting layers are each lower than a HOMO energy level of the first common layer, and wherein the HOMO energy level of the green light-emitting layer is 0.2 eV or more higher than the HOMO energy level of the blue light-emitting layer.