公开(公告)号：US20230217672A1

公开(公告)日：2023-07-06

申请号：US17976180

申请日：2022-10-28

Applicant: LG Display Co., Ltd.

Inventor： Hong Seok CHOI ,  Hyun Jin CHO ,  Sun hee LEE

IPC: H01L51/50

CPC classification number: H01L51/5044 ,  H01L2251/5376

Abstract: A light emitting device including a first electrode and a second electrode facing each other, a blue fluorescent light emitting layer and a non-blue phosphorescent light emitting layer in contact with each other between the first electrode and the second electrode, a first common layer between the first electrode and the non-blue phosphorescent light emitting layer, and a second common layer between the blue fluorescent light emitting layer and the second electrode. The non-blue phosphorescent light emitting layer includes a first host, and a first dopant having a first triplet excitation level and a first singlet-triplet excitation level difference. The blue fluorescent light emitting layer includes a second dopant having: a second singlet-triplet excitation level difference that is smaller than the first singlet-triplet excitation level difference, and a second triplet excitation level that is higher than the first triplet excitation level, and a second host.

公开(公告)号：US20160079556A1

公开(公告)日：2016-03-17

申请号：US14949184

申请日：2015-11-23

Applicant: LG Display Co., Ltd.

Inventor： Tae Sun YOO ,  Hwa Kyung KIM ,  Hong Seok CHOI ,  Jae Il SONG ,  Mi Young HAN ,  Shin Han KIM ,  Hye Min OH

IPC: H01L51/50 ,  H01L51/52

CPC classification number: H01L51/5028 ,  H01L27/3209 ,  H01L51/5016 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5206 ,  H01L51/5221 ,  H01L2251/5361 ,  H01L2251/5376 ,  H01L2251/5384 ,  H01L2251/558

Abstract: A white organic light emitting device can include first and second electrodes on a substrate; a first stack configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked on the first electrode; a second stack configured with a second hole transportation layer, a second light emission layer, a third light emission layer, and a second electron transportation layer which are stacked on the first stack; a third stack interposed between the second stack and the second electrode and configured with a third hole transportation layer, a fourth light emission layer, a third electron transportation layer and an electron injection layer which are stacked on the second stack; and charge generation layers interposed between the first and second stacks and between the second and third stacks and configured to adjust a charge balance between the stacks.

Abstract translation: 白色有机发光器件可以在衬底上包括第一和第二电极; 配置有层叠在第一电极上的空穴注入层，第一空穴传输层，第一发光层和第一电子传输层的第一堆叠; 配置有第二空穴传输层，第二发光层，第三发光层和第二电子传输层的第二堆叠，堆叠在第一堆叠上; 插入在第二堆叠和第二电极之间并且配置有第三空穴传输层，第四发光层，第三电子传输层和电子注入层的第三堆叠，堆叠在第二堆叠上; 以及插入在第一和第二堆叠之间以及第二和第三堆叠之间的电荷产生层，并且被配置为调整堆叠之间的电荷平衡。

公开(公告)号：US20140167016A1

公开(公告)日：2014-06-19

申请号：US14109634

申请日：2013-12-17

Applicant: LG DISPLAY CO., LTD.

Inventor： Tae Sun YOO ,  Hwa Kyung KIM ,  Hong Seok CHOI ,  Jae Il SONG ,  Mi Young HAN ,  Shin Han KIM ,  Hye Min OH

IPC: H01L51/52

CPC classification number: H01L51/5028 ,  H01L27/3209 ,  H01L51/5016 ,  H01L51/504 ,  H01L51/5044 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5206 ,  H01L51/5221 ,  H01L2251/5361 ,  H01L2251/5376 ,  H01L2251/5384 ,  H01L2251/558

Abstract: A white organic light emitting device includes: first and second electrodes formed to face each other on a substrate; a first stack configured with a hole injection layer, a first hole transportation layer, a first light emission layer and a first electron transportation layer which are stacked between the first and second electrodes; a second stack configured with a second hole transportation layer, a second light emission layer, a third light emission layer, a second electron transportation layer and an electron injection layer which are stacked between the first stack and the second electrode; and a charge generation layer interposed between the first and second stacks and configured to adjust a charge balance between the two stacks.

Abstract translation: 白色有机发光器件包括：在基板上彼此面对形成的第一和第二电极; 配置有层叠在第一和第二电极之间的空穴注入层，第一空穴传输层，第一发光层和第一电子传输层的第一堆叠; 配置有第二空穴传输层，第二发光层，第三发光层，第二电子传输层和电子注入层的第二堆叠，堆叠在第一堆叠和第二电极之间; 以及插入在所述第一和第二堆叠之间并且被配置为调整所述两个堆叠之间的电荷平衡的电荷产生层。