公开(公告)号：US11685751B2

公开(公告)日：2023-06-27

申请号：US17428851

申请日：2020-11-27

Applicant: LG CHEM, LTD.

Inventor： Sujeong Geum ,  Hye Min Cho ,  Seonwoo Kim ,  Wanpyo Hong ,  Jaegoo Lee ,  Hoon Jun Kim

IPC: C07F5/02 ,  C09K11/06 ,  H01L51/00 ,  H01L51/50

CPC classification number: H01L51/008 ,  C07F5/027 ,  C09K11/06 ,  C07B2200/05 ,  C09K2211/1018 ,  H01L51/5016 ,  H01L51/5028 ,  H01L2251/5384

Abstract: A compound of Chemical Formula 1, and an organic light emitting device including the same, the compound used as a material of an organic material layer of the organic light emitting device and providing high color purity and enhanced lifetime properties.

公开(公告)号：US20190081269A1

公开(公告)日：2019-03-14

申请号：US16111282

申请日：2018-08-24

Applicant: Universal Display Corporation

Inventor： Woo-Young SO ,  Nicholas J. THOMPSON ,  Jerald FELDMAN

IPC: H01L51/50 ,  H01L51/52

CPC classification number: H01L51/5028 ,  H01L51/5004 ,  H01L51/5008 ,  H01L51/5016 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5092 ,  H01L51/5096 ,  H01L51/5206 ,  H01L51/5221 ,  H01L51/5253

Abstract: Emissive layer structures for organic emissive devices and emissive devices containing such structures are provided. The emissive layer includes one or more sub-layers or similar regions. A fluorescent emitter and two compounds that may form an exciplex are distributed within the sub-layers so as to enhance Forster transitions from the exciplex to the fluorescent acceptor and suppress undesirable Dexter transitions from the exciplex to the fluorescent acceptor.

公开(公告)号：US20190081265A1

公开(公告)日：2019-03-14

申请号：US16188493

申请日：2018-11-13

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO

IPC: H01L51/50 ,  H01L51/00 ,  C09K11/02 ,  C09K11/06

CPC classification number: H01L51/5004 ,  C09K11/02 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1029 ,  C09K2211/1059 ,  C09K2211/185 ,  C09K2211/188 ,  H01L51/0062 ,  H01L51/0067 ,  H01L51/0072 ,  H01L51/0077 ,  H01L51/0087 ,  H01L51/50 ,  H01L51/5012 ,  H01L51/5016 ,  H01L51/5028 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L2251/303 ,  H01L2251/5376 ,  H01L2251/552

Abstract: Provided is a light-emitting element with high external quantum efficiency and a low drive voltage. The light-emitting element includes a light-emitting layer which contains a phosphorescent compound and a material exhibiting thermally activated delayed fluorescence between a pair of electrodes, wherein a peak of a fluorescence spectrum and/or a peak of a phosphorescence spectrum of the material exhibiting thermally activated delayed fluorescence overlap(s) with a lowest-energy-side absorption band in an absorption spectrum of the phosphorescent compound, and wherein the phosphorescent compound exhibits phosphorescence in the light-emitting layer by voltage application between the pair of electrodes.

公开(公告)号：US20190044084A1

公开(公告)日：2019-02-07

申请号：US16053116

申请日：2018-08-02

Applicant: Rutgers, The State University of New Jersey

Inventor： Deirdre O'CARROLL

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

CPC classification number: H01L51/5028 ,  H01L51/0035 ,  H01L51/0072 ,  H01L51/0085 ,  H01L51/5016 ,  H01L51/502 ,  H01L51/5056 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5096 ,  H01L51/5206 ,  H01L51/5221 ,  H01L2251/301 ,  H01L2251/303

Abstract: Light-emitting devices having an emitting layer containing a light-emitting organic or organometallic material and a nanostructure, the nanostructure having strong local electric fields at visible electromagnetic wavelengths that spectrally and spatially overlap with the light-emitting material. The spectral and spatial overlap of the electric fields of the nanostructure with the light emitting material uses high LDOS provided by the nanostructures to enable excited triplet electronic states in the material to emit light faster than without the nanostructure. This faster light emission from triplet-excited states leads to more stable emission from the light emitting material because it prevents buildup of triplet-excited states, which ordinarily can lead to quenching of light emission from the light emitting material. Among the many different possibilities contemplated, the nanostructure may advantageously be made of a dielectric material or a plasmonic metal material, such as SiO2, TiO2, ZnO, Al or Ag. It is further contemplated that the light-emitting material be capable of exhibiting at least one of phosphorescence or thermally-assisted delayed fluorescence. Many light-emitting materials, including blue light emitters, may be utilized, and may also be doped into a host material. It is still further contemplated that the nanostructure may be a nanoantenna, a nanoparticle, such as a sphere or rod, a nanoporous film, or an imprinted grating, and the nanostructure may be on either side of the light-emitting material, or may be surrounded by or embedded in the host material. The light-emitting device may also advantageously include other layers, including but not limited a hole transport layer, a hole blocking layer, an electron transport layer, a hole injection layer, or an electron injection layer. Further, the device may also be configured for use in various applications, including but not limited to bioimaging, photochemistry, and single molecule spectroscopy.

公开(公告)号：US20190036036A1

公开(公告)日：2019-01-31

申请号：US16151659

申请日：2018-10-04

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kyoko Takeda ,  Harue OSAKA ,  Yusuke TAKITA ,  Naoaki HASHIMOTO ,  Tsunenori SUZUKI ,  Kunihiko SUZUKI ,  Satoshi SEO

IPC: H01L51/00 ,  C09K11/06 ,  H05B33/14 ,  C07D209/86 ,  H01L51/50

CPC classification number: H01L51/0072 ,  C07D209/86 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1018 ,  H01L51/0052 ,  H01L51/5012 ,  H01L51/5028 ,  H05B33/14

Abstract: To provide a novel fluorescent organic compound (a fluorescent compound). The organic compound is a substance that emits fluorescence and an organic compound (a host material) in which TTA can occur efficiently. In the organic compound, triplet excitons, which do not contribute to light emission, can be efficiently converted into singlet excitons. The use of such an organic compound can increase emission efficiency of a light-emitting element.

公开(公告)号：US20180358564A1

公开(公告)日：2018-12-13

申请号：US16105931

申请日：2018-08-20

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Naoyuki Ito ,  Seul-Ong Kim ,  Youn-Sun Kim ,  Dong-Woo Shin ,  Jung-Sub Lee

IPC: H01L51/00 ,  H01L27/32 ,  H01L51/52 ,  H01L51/50

CPC classification number: H01L51/0072 ,  H01L27/3244 ,  H01L27/3248 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0067 ,  H01L51/0074 ,  H01L51/0081 ,  H01L51/0085 ,  H01L51/5004 ,  H01L51/5008 ,  H01L51/5016 ,  H01L51/5028 ,  H01L51/5056 ,  H01L51/506 ,  H01L51/5072 ,  H01L51/5088 ,  H01L51/5092 ,  H01L51/5096 ,  H01L51/5206 ,  H01L51/5221 ,  H01L2251/5384 ,  H01L2251/552

Abstract: An organic light-emitting device includes an anode, a cathode, and an organic layer between the anode and the cathode, wherein the organic layer includes a mixed organic layer, and the mixed organic layer includes at least two different compounds, and a triplet energy of at least one compound of the at least two different compounds is 2.2 eV or higher. The organic light-emitting device according to embodiments of the present invention may have a low driving voltage, a high efficiency, and a long lifespan.

公开(公告)号：US20180151821A1

公开(公告)日：2018-05-31

申请号：US15451427

申请日：2017-03-07

Applicant: Industrial Technology Research Institute

Inventor： Yu-Jung Peng ,  Jiun-Haw Lee ,  Po-Chen Tseng ,  Bo-Yen Lin ,  Chi-Feng Lin ,  Tien-Lung Chiu ,  Ming-Zer Lee

IPC: H01L51/50

CPC classification number: H01L51/5016 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/0059 ,  H01L51/0065 ,  H01L51/0072 ,  H01L51/5004 ,  H01L51/5012 ,  H01L51/5024 ,  H01L51/5028 ,  H01L51/5036 ,  H01L51/5096

Abstract: An organic light-emitting diode (OLED) and a white OLED are provided. The OLED sequentially includes an anode, an emission layer, an electron transport layer, and a cathode. The emission layer includes a triplet-triplet annihilation (TTA) material and a donor material. The doubled triplet energy of the TTA material is greater than the singlet energy of the TTA material. The donor material is disposed between the anode and the TTA material and has a second singlet energy and a second triplet energy. A sensitizer is doped in the emission layer or formed between the TTA material and the donor material when a voltage is applied. The sensitizer has a third singlet energy and a third triplet energy. The third singlet energy and the third triplet energy are both smaller than the second singlet energy.

公开(公告)号：US09954169B2

公开(公告)日：2018-04-24

申请号：US13777736

申请日：2013-02-26

Applicant: JOLED INC.

Inventor： Tadahiko Yoshinaga ,  Tomoyuki Higo

IPC: H01L51/00 ,  C09K11/06 ,  H01L27/32 ,  H01L51/50 ,  H05B33/10

CPC classification number: H01L51/0004 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1029 ,  C09K2211/1033 ,  C09K2211/1037 ,  C09K2211/1044 ,  C09K2211/1092 ,  H01L27/3211 ,  H01L51/0059 ,  H01L51/5028 ,  H01L51/504 ,  H01L2251/552 ,  H05B33/10

Abstract: An organic EL display including lower electrodes arranged on a substrate to correspond to first organic EL elements of blue and second organic EL elements of any other color, respectively; hole injection/transport layers arranged on the lower electrodes; second organic light-emitting layers of the other color arranged on the hole injection/transport layers for the second organic EL elements; a first organic light-emitting layer of blue arranged on whole surfaces of the second organic light-emitting layers and the hole injection/transport layers for the first organic EL elements; an electron injection/transport layer arranged on a whole surface of the first light-emitting layer, the electron injection/transport layer made of a nitrogen-containing heterocyclic compound with an electron mobility of 1.0×10−6 cm2/Vs to 1.0×10−1 cm2/Vs both inclusive and having one or both of electron injection properties and electron transport properties; and an upper electrode arranged on the electron injection/transport layer.

公开(公告)号：US09941483B2

公开(公告)日：2018-04-10

申请号：US15178638

申请日：2016-06-10

Applicant: Semiconductor Energy Laboratory Co., Ltd.

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

IPC: H01L51/00 ,  H01L51/50

CPC classification number: H01L51/504 ,  H01L51/0052 ,  H01L51/0054 ,  H01L51/0058 ,  H01L51/006 ,  H01L51/0061 ,  H01L51/0072 ,  H01L51/0074 ,  H01L51/0085 ,  H01L51/0097 ,  H01L51/5016 ,  H01L51/5028 ,  H01L2251/5376

Abstract: A light-emitting element includes a stack of a first light-emitting layer emitting fluorescent light and a second light-emitting layer emitting phosphorescent light between a pair of electrodes. The second light-emitting layer includes a first layer in which an exciplex is formed, a second layer in which an exciplex is formed, and a third layer in which an exciplex is formed. The second layer is located over the first layer, and the third layer is located over the second layer. An emission peak wavelength of the second layer is longer than an emission peak wavelength of the first layer and an emission peak wavelength of the third layer.

公开(公告)号：US09911922B2

公开(公告)日：2018-03-06

申请号：US15149176

申请日：2016-05-08

Applicant: Feng-Wen Yen ,  Cheng-Hao Chang

Inventor： Feng-Wen Yen ,  Cheng-Hao Chang

IPC: H01L51/50 ,  H01L51/00 ,  C07D209/80 ,  C07D209/86 ,  C07D307/91 ,  C07D333/76 ,  C09K11/02 ,  C09K11/06

CPC classification number: H01L51/0058 ,  C07D209/80 ,  C07D209/86 ,  C07D307/91 ,  C07D333/76 ,  C09K11/025 ,  C09K11/06 ,  C09K2211/1007 ,  C09K2211/1011 ,  C09K2211/1014 ,  C09K2211/1029 ,  C09K2211/1088 ,  C09K2211/1092 ,  H01L51/0056 ,  H01L51/006 ,  H01L51/0071 ,  H01L51/0072 ,  H01L51/0073 ,  H01L51/0074 ,  H01L51/5012 ,  H01L51/5028

Abstract: The present invention discloses an organic compound is represented by the following formula(1), the organic EL device employing the organic compound as fluorescent emitting guest shown deep blue color(CIEy=0.09˜0.12)and display good performance. wherein A, m and R1 to R3 are the same definition as described in the present invention.