公开(公告)号：US10665805B2

公开(公告)日：2020-05-26

申请号：US16140784

申请日：2018-09-25

申请人： LG Display Co., Ltd.

发明人： Seung-Jae Lee ,  Jong-Kwan Bin ,  Na-Yeon Lee

IPC分类号： H01L51/50 ,  H01L51/52 ,  H01L51/56 ,  H01L27/32

摘要： A light emitting diode includes a first electrode and a second electrode facing the first electrode. The light emitting diode further includes an emitting material layer (EML) disposed between the first electrode and the second electrode, and an electron transport layer (ETL) adjacent the EML. The ETL includes a plurality of first inorganic particles having a first average particle size, and a plurality of second inorganic particles having a second average particle size greater than the first average particle size. The plurality of first inorganic particles may also have a first energy bandgap, and a plurality of second inorganic particles may also have a second energy bandgap smaller than the first energy bandgap.

公开(公告)号：US20210167321A1

公开(公告)日：2021-06-03

申请号：US17077461

申请日：2020-10-22

申请人： LG Display Co., Ltd.

发明人： Jong-Kwan Bin ,  Na-Yeon Lee

IPC分类号： H01L51/52 ,  H01L51/50 ,  H01L51/00

摘要： The present disclosure relates to an inorganic light emitting diode (LED) in which an emitting material layer (EML) includes inorganic luminescent particles and a cyclic boronic acid mixed with the inorganic luminescent particles and an inorganic light emitting device including the inorganic LED. The cyclic boronic acid in the EML allows surface defects on the inorganic luminescent particle to be minimized, and stabilizes the particles. As excitons by recombining holes and electrons in the stabilized luminescent particles become stabilized, the particles show improved exciton generation efficiency. The cyclic boronic acid enables the inorganic LED and the inorganic light emitting device to achieve lower driving voltages and improved luminous efficiency.

公开(公告)号：US11673895B2

公开(公告)日：2023-06-13

申请号：US16703433

申请日：2019-12-04

申请人： LG Display Co., Ltd.

发明人： Na-Yeon Lee ,  Hye-Li Min

IPC分类号： C07D487/14 ,  H01L51/00 ,  C07C211/50 ,  H10K85/60 ,  H10K50/17 ,  H10K50/115 ,  H10K50/155

CPC分类号： C07D487/14 ,  C07C211/50 ,  H10K85/624 ,  H10K85/633 ,  H10K85/636 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  H10K50/115 ,  H10K50/155 ,  H10K50/17

摘要： The present disclosure relates to an organic compound having a fused aromatic or hetero aromatic ring including a carbazole or fluorene moiety and a group having excellent charge mobility property, and a light emitting diode and a light emitting device having the organic compound. The organic compound can be applied into the light emitting diode by using solution process and has very deep HOMO energy level. When the organic compound is applied into a chare transfer layer, a HOMO energy level bandgap between the charge transfer layer and an emitting material layer is reduced so that holes and electrons can be injected into the emitting material layer in a balanced manner.

公开(公告)号：US11653512B2

公开(公告)日：2023-05-16

申请号：US16170938

申请日：2018-10-25

申请人： LG Display Co., Ltd.

发明人： Seung-Jae Lee ,  Jong-Kwan Bin ,  Na-Yeon Lee

IPC分类号： H10K10/40 ,  H10K50/11 ,  H10K101/40

CPC分类号： H10K50/11 ,  H10K50/166 ,  H10K50/18 ,  H10K85/1135 ,  H10K85/626 ,  H10K85/6572 ,  H10K50/115 ,  H10K59/12 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2102/00

摘要： According to principals as disclosed herein an organic, light emitting diode assembly is provided having a first electrode. An electron injection layer is adjacent to the first electrode. A first electron transport layer composed of inorganic material is adjacent to the electron injection layer. A second electron transport layer composed of organic material is adjacent to the first electron transport layer and in contact with an organic light emitting material layer. The organic light emitting material layer is in direct, abutting contact with the second electron transport layer. A hole transport layer is adjacent to the organic light emitting material layer and a second electrode is adjacent to the hole transport layer.

公开(公告)号：US11495769B2

公开(公告)日：2022-11-08

申请号：US17077461

申请日：2020-10-22

申请人： LG Display Co., Ltd.

发明人： Jong-Kwan Bin ,  Na-Yeon Lee

IPC分类号： H01L51/52 ,  H01L51/00 ,  H01L51/50

摘要： The present disclosure relates to an inorganic light emitting diode (LED) in which an emitting material layer (EML) includes inorganic luminescent particles and a cyclic boronic acid mixed with the inorganic luminescent particles and an inorganic light emitting device including the inorganic LED. The cyclic boronic acid in the EML allows surface defects on the inorganic luminescent particle to be minimized, and stabilizes the particles. As excitons by recombining holes and electrons in the stabilized luminescent particles become stabilized, the particles show improved exciton generation efficiency. The cyclic boronic acid enables the inorganic LED and the inorganic light emitting device to achieve lower driving voltages and improved luminous efficiency.

公开(公告)号：US11139436B2

公开(公告)日：2021-10-05

申请号：US16172417

申请日：2018-10-26

申请人： LG Display Co., Ltd.

发明人： Na-Yeon Lee ,  Seung-Jae Lee ,  Jong-Kwan Bin

IPC分类号： H01L51/50 ,  H01L51/00 ,  C07D495/04

摘要： Compounds useful dopants for light emitting diodes and light emitting display devices are disclosed. The compounds have the following structure (Formula I): wherein R1a, R1b, R2a, R2b, Z1, Z2, X and Y are as defined herein. Light emitting diodes including the compounds of Formula I, light emitting devices including the same as well as methods associated with preparation and use of such compounds and devices are also provided.

公开(公告)号：US20190131548A1

公开(公告)日：2019-05-02

申请号：US16172417

申请日：2018-10-26

申请人： LG Display Co., Ltd.

发明人： Na-Yeon Lee ,  Seung-Jae Lee ,  Jong-Kwan Bin

IPC分类号： H01L51/00 ,  C07D495/04

摘要： Compounds useful dopants for light emitting diodes and light emitting display devices are disclosed. The compounds have the following structure (Formula I): wherein R1a, R1b, R2a, R2b, Z1, Z2, X and Y are as defined herein. Light emitting diodes including the compounds of Formula I, light emitting devices including the same as well as methods associated with preparation and use of such compounds and devices are also provided.

公开(公告)号：US10103345B2

公开(公告)日：2018-10-16

申请号：US15810688

申请日：2017-11-13

申请人： LG Display Co., Ltd.

发明人： Kyung-Jin Yoon ,  Na-Yeon Lee

IPC分类号： H01L29/08 ,  H01L51/50 ,  H01L29/66 ,  H01L33/06 ,  B82Y40/00

摘要： Provided are a quantum dot light-emitting diode including an interface control layer located between a luminous material layer using quantum dots as a luminous material and at least one charge transfer layer for supplying charges to the luminous material layer, and a quantum dot light-emitting display device including the same. Since the interface control layer is provided between the luminous material layer and the at least one charge transfer layer, the occurrence of an interface defect due to an interfacial energy mismatch between the luminous material layer and the at least one charge transfer layer may be prevented to obtain the luminous material layer including quantum dots with uniform morphology. Furthermore, since the interface control layer is used, oxygen or moisture may be prevented from permeating into the luminous material layer, thereby preventing degradation of the quantum dots used as a luminous material.