公开(公告)号：US20240334728A1

公开(公告)日：2024-10-03

申请号：US18739439

申请日：2024-06-11

Applicant: Universal Display Corporation

Inventor： Michael Stuart WEAVER ,  Julia J. BROWN

IPC: H10K50/13 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K50/19 ,  H10K50/80 ,  H10K50/85 ,  H10K59/32 ,  H10K101/00 ,  H10K101/10

CPC classification number: H10K50/131 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/171 ,  H10K50/18 ,  H10K50/80 ,  H10K50/85 ,  H10K59/32 ,  H10K50/11 ,  H10K50/19 ,  H10K2101/10 ,  H10K2101/27

Abstract: OLEDs containing a stacked hybrid architecture including a phosphorescent organic emissive unit and two fluorescent organic emissive units are disclosed. The stacked hybrid architecture includes a plurality of electrodes and a hybrid emissive stacked disposed between at least two of the electrodes. The stack contains at least three emissive units and at least two charge generation layers. At least one of the three emissive units is a phosphorescent organic emissive unit and at least two of the three emissive units are fluorescent organic emissive units. More specifically, the two fluorescent organic emissive units may be blue organic emissive units that emit light from the same or different color regions.

公开(公告)号：US20240324264A1

公开(公告)日：2024-09-26

申请号：US18669611

申请日：2024-05-21

Applicant: The University of Southern California ,  The Regents of the University of Michigan

Inventor： Mark E. Thompson ,  Abegail Tadle ,  Muazzam Idris ,  Karim El Roz ,  Daniel Sylvinson Muthiah Ravinson ,  Stephen R. Forrest ,  Chan Ho Soh

IPC: H10K50/11 ,  C07D233/58 ,  C07D401/10 ,  C09K11/06 ,  H10K50/125 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30

CPC classification number: H10K50/11 ,  C07D233/58 ,  C07D401/10 ,  C09K11/06 ,  H10K50/125 ,  H10K85/322 ,  H10K85/654 ,  H10K85/6572 ,  C09K2211/1018 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/30 ,  H10K2101/90

Abstract: A hybrid emissive layer and OLED incorporating the same are provided. The hybrid emissive layer includes a first material having a triplet state energy level T1H and a singlet state energy level S1H, & second material having a triplet state energy level T1F and a singlet state energy level S1F; and a third material having a triplet state energy level T1P and a single state energy level S1P, where T1F≥T1H; S1F≤S1H; and T1P

公开(公告)号：US12048178B2

公开(公告)日：2024-07-23

申请号：US18203699

申请日：2023-05-31

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuharu Ohsawa ,  Yusuke Nonaka ,  Takahiro Ishisone ,  Satoshi Seo ,  Takuya Kawata

IPC: H10K50/13 ,  H10K50/11 ,  H10K50/12 ,  H10K50/15 ,  H10K50/16 ,  H10K59/32 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K102/00

CPC classification number: H10K50/131 ,  H10K50/11 ,  H10K50/121 ,  H10K50/15 ,  H10K50/16 ,  H10K59/32 ,  H10K85/342 ,  H10K85/611 ,  H10K85/615 ,  H10K85/622 ,  H10K85/626 ,  H10K85/633 ,  H10K85/636 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/90 ,  H10K2102/351

Abstract: An object of one embodiment of the present invention is to provide a multicolor light-emitting element that utilizes fluorescence and phosphorescence and is advantageous for practical application. The light-emitting element has a stacked-layer structure of a first light-emitting layer containing a host material and a fluorescent substance, a separation layer containing a substance having a hole-transport property and a substance having an electron-transport property, and a second light-emitting layer containing two kinds of organic compounds that form an exciplex and a substance that can convert triplet excitation energy into luminescence. Note that a light-emitting element in which light emitted from the first light-emitting layer has an emission spectrum peak on the shorter wavelength side than an emission spectrum peak of the second light-emitting layer is more effective.

公开(公告)号：US12010859B2

公开(公告)日：2024-06-11

申请号：US16867073

申请日：2020-05-05

Applicant: UNIVERSAL DISPLAY CORPORATION

Inventor： Chun Lin ,  Tyler Fleetham ,  Michael S. Weaver

IPC: H01L51/50 ,  H10K50/11 ,  H10K101/00 ,  H10K101/10

CPC classification number: H10K50/11 ,  H10K2101/10 ,  H10K2101/27

Abstract: Provided is an OLED that includes in its emissive region a first compound, a second compound, and a third compound, where the first compound is capable of functioning as a phosphorescent emitter in an OLED at room temperature, the second compound meets at least one of the following conditions:



(1) the second compound is capable of functioning as a TADF emitter in an OLED at room temperature; and
(2) the second compound is capable of forming an exciplex with the first compound in an OLED at room temperature, and the third compound is a fluorescent compound that functions as an emitter in the OLED of the present disclosure at room temperature.

公开(公告)号：US11974446B2

公开(公告)日：2024-04-30

申请号：US17102049

申请日：2020-11-23

Applicant: LG Display Co., Ltd.

Inventor： Wook Song ,  Eun-Jung Park ,  Chun-Ki Kim ,  Se-Ung Kim

IPC: H10K50/13 ,  H10K50/11 ,  H10K50/15 ,  H10K50/19 ,  H10K59/12 ,  H10K59/38 ,  H10K85/30 ,  H10K85/60 ,  H10K101/00 ,  H10K101/10 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K50/131 ,  H10K50/11 ,  H10K50/15 ,  H10K50/19 ,  H10K59/38 ,  H10K59/12 ,  H10K85/342 ,  H10K85/654 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2101/90

Abstract: Disclosed are a white organic light emitting element, which may uniformize the color coordinates of white regardless of a change in current density by changing the configuration of different kinds of light emitting layers contacting each other, and a display device using the same.

公开(公告)号：US11889757B2

公开(公告)日：2024-01-30

申请号：US16523902

申请日：2019-07-26

Applicant: LG Display Co., Ltd.

Inventor： Bo-Min Seo ,  Dae-Wi Yoon ,  Jun-Yun Kim ,  Chun-Ki Kim ,  Mi-Sang Yoo

IPC: H10K85/60 ,  H10K85/40 ,  H10K50/11 ,  H10K50/13 ,  H10K50/18 ,  H10K50/81 ,  H10K50/82 ,  H10K101/10 ,  H10K101/00

CPC classification number: H10K85/6572 ,  H10K85/40 ,  H10K85/654 ,  H10K85/6574 ,  H10K50/11 ,  H10K50/13 ,  H10K50/18 ,  H10K50/81 ,  H10K50/82 ,  H10K2101/10 ,  H10K2101/27

Abstract: An organic light emitting diode comprises an emitting material layer implementing a delayed fluorescence and another emitting material layer disposed adjacently to the emitting material layer and implementing fluorescence or phosphorescence and an organic light emitting device including the diode. As exciton generated in the plural emitting material layer drops to a ground state through the luminous materials each of which has a controlled energy level, it is possible to implement excellent luminous efficiency derived from a delayed fluorescent material and improved color purity derived from a fluorescent or phosphorescent material having narrow FWHM.

公开(公告)号：US11832465B2

公开(公告)日：2023-11-28

申请号：US17834973

申请日：2022-06-08

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Takahiro Ishisone ,  Nobuharu Ohsawa ,  Yusuke Nonaka ,  Toshiki Sasaki

IPC: H01L51/50 ,  H10K50/11 ,  G09G3/3225 ,  H10K50/12 ,  H10K50/13 ,  H10K50/15 ,  H10K50/16 ,  H10K50/81 ,  H10K50/82 ,  H10K50/84 ,  H10K59/00 ,  H10K59/131 ,  H10K59/121 ,  H10K59/38 ,  H10K101/10 ,  H10K101/40 ,  H10K101/00 ,  H10K101/30

CPC classification number: H10K50/11 ,  G09G3/3225 ,  H10K50/12 ,  H10K50/13 ,  H10K50/131 ,  H10K50/15 ,  H10K50/16 ,  H10K50/81 ,  H10K50/82 ,  H10K50/84 ,  H10K59/00 ,  H10K59/1213 ,  H10K59/131 ,  G09G2300/0426 ,  H10K59/38 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/30 ,  H10K2101/40

Abstract: Emission efficiency of a light-emitting element is improved. The light-emitting element has a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a first light-emitting layer and a second light-emitting layer. The first light-emitting layer includes a fluorescent material and a host material. The second light-emitting layer includes a phosphorescent material, a first organic compound, and a second organic compound. An emission spectrum of the second light-emitting layer has a peak in a yellow wavelength region. The first organic compound and the second organic compound form an exciplex.

公开(公告)号：US20230263057A1

公开(公告)日：2023-08-17

申请号：US18103751

申请日：2023-01-31

Applicant: Samsung Display Co., Ltd.

Inventor： Kyoung Sunwoo ,  Seran Kim ,  Sunyoung Pak ,  Jangyeol Baek ,  Munki Sim ,  Chanseok Oh ,  Moran Ha

IPC: H10K85/60 ,  C07F5/02 ,  C07F7/08 ,  H10K85/40

CPC classification number: H10K85/658 ,  H10K85/6572 ,  H10K85/654 ,  C07F5/027 ,  C07F7/0812 ,  H10K85/40 ,  H10K85/6576 ,  H10K85/6574 ,  C07B2200/05 ,  H10K2101/27

Abstract: Embodiments provide a condensed cyclic compound, a light-emitting device that includes the condensed cyclic compound, and an electronic apparatus that includes the light-emitting device. The 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, wherein the emission layer includes the condensed cyclic compound. The condensed cyclic compound is represented by Formula 1, which is explained in the specification:

公开(公告)号：US11723264B2

公开(公告)日：2023-08-08

申请号：US17198566

申请日：2021-03-11

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Tsunenori Suzuki ,  Naoaki Hashimoto ,  Eriko Saijo ,  Satoshi Seo

IPC: H01L51/00 ,  H01L51/50 ,  H10K85/30 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16 ,  H10K101/10 ,  H10K85/60 ,  H10K101/00 ,  H10K101/30

CPC classification number: H10K85/342 ,  H10K50/11 ,  H10K50/13 ,  H10K50/16 ,  H10K85/622 ,  H10K85/631 ,  H10K85/633 ,  H10K85/6572 ,  H10K85/6576 ,  H10K2101/10 ,  H10K2101/27 ,  H10K2101/30 ,  H10K2101/90

Abstract: A light-emitting element which includes a plurality of light-emitting layers between a pair of electrodes and has low driving voltage and high emission efficiency is provided. A light-emitting element including first to third light-emitting layers between a cathode and an anode is provided. The first light-emitting layer includes a first phosphorescent material and a first electron-transport material; the second light-emitting layer includes a second phosphorescent material and a second electron-transport material; the third light-emitting layer includes a fluorescent material and a third electron-transport material; the first to third light-emitting elements are provided in contact with an electron-transport layer positioned on a cathode side; and a triplet excitation energy level of a material included in the electron-transport layer is lower than triplet excitation energy levels of the first electron-transport material and the second electron-transport material.

公开(公告)号：US11716902B2

公开(公告)日：2023-08-01

申请号：US17089278

申请日：2020-11-04

Applicant: Universal Display Corporation

Inventor： Chuanjun Xia ,  Chun Lin ,  Raymond Kwong ,  Scott Joseph ,  James Esler

IPC: H01L51/50 ,  H10K85/60 ,  C09K11/06 ,  C07D405/14 ,  C07D403/10 ,  C07D409/14 ,  C07D491/048 ,  C07D403/14 ,  C07D493/04 ,  C07D495/04 ,  H10K50/11 ,  H10K101/00

CPC classification number: H10K85/654 ,  C07D403/10 ,  C07D403/14 ,  C07D405/14 ,  C07D409/14 ,  C07D491/048 ,  C07D493/04 ,  C07D495/04 ,  C09K11/06 ,  H10K85/622 ,  H10K85/633 ,  H10K85/636 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1029 ,  C09K2211/1044 ,  C09K2211/1059 ,  C09K2211/1088 ,  C09K2211/1092 ,  H10K50/11 ,  H10K2101/27

Abstract: Devices containing novel carbazole-containing compounds are provided. The novel compounds also contain electron donor groups, aryl linkers, and at least one nitrogen heterocycle. These novel organic compounds can exhibit delayed fluorescence in the devices.