公开(公告)号：US20210126205A1

公开(公告)日：2021-04-29

申请号：US17077240

申请日：2020-10-22

Applicant: LG DISPLAY CO., LTD.

Inventor： Hye-Gun RYU ,  Ik-Rang CHOE ,  Jun-Yun KIM ,  Seong-Keun KIM ,  Ju-Young LEE

IPC: H01L51/00

Abstract: An organic light emitting diode (OLED) includes a first emitting material layer disposed adjacently to a first electrode and a second emitting material layer disposed adjacently to a second electrode. The first emitting material layer includes a first compound having high affinity to holes and a second compound of thermally activated delayed fluorescent material, and the second emitting material layer includes a fourth compound having high affinity to electrons and implementing triplet-triplet annihilation. Two emitting material layers having adjusted energy levels allow the OLED to lower its driving voltages and improve its luminous efficiency and luminous lifetime.

公开(公告)号：US20210167300A1

公开(公告)日：2021-06-03

申请号：US17105096

申请日：2020-11-25

Applicant: LG DISPLAY CO., LTD. ,  LG CHEM, LTD.

Inventor： Hyong-Jong CHOI ,  Bo-Min SEO ,  Ik-Rang CHOE ,  Hye-Gun RYU ,  Jin-Joo KIM

IPC: H01L51/00 ,  C07D493/04 ,  C09K11/06

Abstract: The present disclosure relates to an organic compound having the following structure of Chemical Formula 1, and an organic light emitting diode (OLED) and an organic light emitting device including the organic compound. The organic compound is a bipolar organic compound having a p-type moiety and an n-type moiety. The organic compound has a high excited triplet energy level, a wide energy bandgap and excellent thermal stability. When the organic compound is introduced into an emitting material layer (EML) of the OLED, holes and electrons are recombined in the whole area of the EML, thus the OLED can improve its luminous efficiency and luminous lifetime.

公开(公告)号：US20210167289A1

公开(公告)日：2021-06-03

申请号：US17100611

申请日：2020-11-20

Applicant: LG Display Co., Ltd.

Inventor： Ik-Rang CHOE ,  Hye-Gun RYU ,  Jun-Yun KIM ,  Seong-Keun KIM ,  Ju-Young LEE

IPC: H01L51/00 ,  C09K11/06

Abstract: The present disclosure provides an organic light emitting diode including a first electrode; a second electrode facing the first electrode; and an emitting material layer including a first compound and a second compound positioned between the first and second electrodes, wherein the first compound includes a hexagonal-ring moiety including one boron atom, one oxygen atom and four carbon atoms, and the second compound includes a hexagonal-ring moiety including one boron atom, one nitrogen atom and four carbon atoms, and an organic light emitting device including the organic light emitting diode.

公开(公告)号：US20220149296A1

公开(公告)日：2022-05-12

申请号：US17519234

申请日：2021-11-04

Applicant: LG DISPLAY CO., LTD.

Inventor： Ik-Rang CHOE ,  Hye-Gun RYU ,  Dong-Ryun LEE ,  Jun-Yun KIM

IPC: H01L51/00

Abstract: An organic light emitting diode (OLED) including at least one emitting material layer (EML) disposed between two electrodes and comprising a first compound including a fused hetero aromatic ring with at least one nitrogen atom and a second compound of a boron-based compound and an organic light emitting device including the OLED is disclosed. The first compound and the second compound may be the same emitting material layer or adjacently disposed emitting material layers. The OLED can lower its driving voltage and improve its luminous efficiency using the first and second compounds with adjusting their energy levels.

公开(公告)号：US20210024509A1

公开(公告)日：2021-01-28

申请号：US16932007

申请日：2020-07-17

Applicant: LG DISPLAY CO., LTD.

Inventor： Ik-Rang CHOE ,  Kyung-Jin YOON ,  In-Ae SHIN ,  Mi-Sang YOO

IPC: C07D409/14 ,  C07D401/14 ,  C07D405/14 ,  H01L51/50 ,  H01L51/00

Abstract: The present disclosure provides an organic compound of following formula and an organic light emitting diode and an OLED device including the organic compound.

公开(公告)号：US20220209121A1

公开(公告)日：2022-06-30

申请号：US17524239

申请日：2021-11-11

Applicant: LG DISPLAY CO., LTD.

Inventor： Gyeong-Woo KIM ,  Ji-Seon JANG ,  Ik-Rang CHOE ,  Hye-Gun RYU ,  Han-Jin AHN ,  Jun-Yun KIM

IPC: H01L51/00 ,  C07F5/02 ,  C09K11/06 ,  C07D471/04

Abstract: An organic light emitting diode includes a first electrode; a second electrode facing the first electrode; and a first emitting material layer including a first compound, a second compound and a third compound and positioned between the first and second electrodes, wherein an onset wavelength of the second compound is greater than an onset wavelength of the first compound and is smaller than an onset wavelength of the third compound, wherein a maximum emission wavelength of the second compound is smaller than a maximum emission wavelength of the first compound, and a maximum emission wavelength of the third compound is equal to or smaller than a maximum emission wavelength of the first compound, and wherein a full width at half maximum of each of the second and third compounds is smaller than a full width at half maximum of the first compound.

公开(公告)号：US20220149280A1

公开(公告)日：2022-05-12

申请号：US17519297

申请日：2021-11-04

Applicant: LG DISPLAY CO., LTD.

Inventor： Dong-Ryun LEE ,  Hye-Gun RYU ,  Ik-Rang CHOE ,  Jun-Yun KIM

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

Abstract: An organic light emitting diode (OLED) including at least one emitting material layer (EML) disposed between two electrodes and comprising a first compound including a fused ring of boron and oxygen as a nuclear atom and a second compound including a fused ring of born and nitrogen as a nuclear atom and an organic light emitting device including the OLED is disclosed. The first compound and the second compound may be the same emitting material layer or adjacently disposed emitting material layers. The OLED can lower its driving voltage and improve its luminous efficiency using the first and second compounds with adjusting their energy levels.