中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

57 records (took 0.028 seconds)

    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING LIGHT-EMITTING DEVICE
    2.
    发明公开
    LIGHT-EMITTING DEVICE AND ELECTRONIC APPARATUS INCLUDING LIGHT-EMITTING DEVICE 审中-公开

    公开(公告)号：US20230268467A1

    公开(公告)日：2023-08-24

    申请号：US17979958

    申请日：2022-11-03

    Applicant: Samsung Display Co., Ltd.

    Inventor： Mieun Jun ,  Yujin Kang ,  Youngki Lee

    IPC: H01L33/50 ,  H01L33/14

    CPC classification number: H01L33/502 ,  H01L33/14

    Abstract: A light-emitting device includes a first electrode, a second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode and including an emission layer. The emission layer includes a first host, a second host, a first dopant, and a second dopant, which are all different from one another. The first host is a hole transporting compound, the second host is an electron transporting compound, the first dopant is a phosphorescent dopant, and the second dopant is a delayed fluorescence dopant. The light-emitting device satisfies Expression 1, and a spectral overlap integral of an emission spectrum of the first dopant and an absorption spectrum of the second dopant is 0.5×1014 M−1cm−1nm4 or greater, wherein the spectral overlap integral is evaluated by Expression 2:


    T1(D1)≤S1(D2)  [Expression 1]



    J(λ)=∫0∞ε(λ)λ4FD(λ)dλ  [Expression 2]

    Expressions 1 and 2 are explained in the specification.

    Condensed cyclic compound and organic light-emitting device including the same
    3.
    发明授权
    Condensed cyclic compound and organic light-emitting device including the same 有权

    公开(公告)号：US10907093B2

    公开(公告)日：2021-02-02

    申请号：US15786162

    申请日：2017-10-17

    Applicant: Samsung Display Co., Ltd.

    Inventor： Soobyung Ko ,  Haejin Kim ,  Mieun Jun ,  Youngkook Kim ,  Seokhwan Hwang

    IPC: C09K11/06 ,  C07D209/86 ,  C07D209/88 ,  C07D401/14 ,  H01L51/00 ,  H01L51/50

    Abstract: A condensed cyclic compound and a device including the same are provided. The compound has the structure wherein rings A1-A4 may independently be selected from a C5-C30 carbocyclic ring and a C2-C30 heterocyclic ring, R1 to R4 may independently be selected from Formula 2-1, Formula 2-2, hydrogen, deuterium (-D), —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C1-C60 alkyl group, a C2-C60 alkenyl group, a C2-C60 alkynyl group, a C1-C60 alkoxy group, a C3-C10 cycloalkyl group, a C1-C10 heterocycloalkyl group, a C3-C10 cycloalkenyl group, a C1-C10 heterocycloalkenyl group, a C6-C60 aryl group, a C6-C60 aryloxy group, a C6-C60 arylthio group, a C1-C60 heteroaryl group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, —Si(Q1)(Q2)(Q3), —B(Q1)(Q2), —C(═O)(Q1), —S(═O)2(Q1), and —P(═O)(Q1)(Q2). Details, including structures of Formula 2-1 and Formula 2-2, are provided.

Patent Agency Ranking