公开(公告)号：US11641776B2

公开(公告)日：2023-05-02

申请号：US16702204

申请日：2019-12-03

Applicant: LG Display Co., Ltd.

Inventor： Mi-Sang Yoo ,  Hyo-Jin Noh ,  Jeong-Eun Baek

IPC: H01L51/00 ,  C07D209/94 ,  C07D401/10 ,  C09K11/06

Abstract: Discussed is an organic compound having a benzofluorenocarbazole core and an aromatic or hetero aromatic groups bonded to a specific positions of the benzofluorenocarbazole core, and an organic light emitting diode and an organic light emitting device including the compound. The organic compound has a narrow Stokes Shift between an absorption spectrum peak and an emission spectrum peak, it has a broad spectral overlapping area between its absorption wavelength range and an emission wavelength range of another luminous material. Therefore, it can emit light having high color purity and exhibit excellent luminous efficiency.

公开(公告)号：US11515485B2

公开(公告)日：2022-11-29

申请号：US16702064

申请日：2019-12-03

Applicant: LG Display Co., Ltd.

Inventor： Jeong-Eun Baek ,  Bo-Min Seo ,  Hyo-Jin Noh ,  Mi-Sang Yoo

IPC: H01L51/00 ,  C09K11/06 ,  H01L51/50

Abstract: An organic light emitting diode including a plurality delayed fluorescent materials with specific energy levels and an organic light emitting device including the diode is disclosed. When the plurality delayed fluorescent materials with specific energy levels are applied in an emitting material layer, it is possible to minimize the energy loss or exciton quenching during luminous process and to prevent the diode from reducing life span caused by the exciton quenching. When the emitting material layer includes other luminous material having a narrow FWHM, the organic light emitting diode can enhance its color purity.

公开(公告)号：US20200185616A1

公开(公告)日：2020-06-11

申请号：US16702064

申请日：2019-12-03

Applicant: LG Display Co., Ltd.

Inventor： Jeong-Eun Baek ,  Bo-Min Seo ,  Hyo-Jin Noh ,  Mi-Sang Yoo

IPC: H01L51/00 ,  C09K11/06 ,  H01L51/50

Abstract: An organic light emitting diode including a plurality delayed fluorescent materials with specific energy levels and an organic light emitting device including the diode is disclosed. When the plurality delayed fluorescent materials with specific energy levels are applied in an emitting material layer, it is possible to minimize the energy loss or exciton quenching during luminous process and to prevent the diode from reducing life span caused by the exciton quenching. When the emitting material layer includes other luminous material having a narrow FWHM, the organic light emitting diode can enhance its color purity.