公开(公告)号：US12058932B2

公开(公告)日：2024-08-06

申请号：US17355351

申请日：2021-06-23

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Siqi Wang

IPC: H01L51/50 ,  C07D209/86 ,  C07D239/26 ,  C07D251/24 ,  C07F7/08 ,  C09K11/06 ,  H10K85/40 ,  H10K85/60 ,  H10K50/11 ,  H10K101/00 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K85/6572 ,  C07D209/86 ,  C07D239/26 ,  C07D251/24 ,  C07F7/0812 ,  C09K11/06 ,  H10K85/40 ,  H10K85/654 ,  C09K2211/1018 ,  H10K50/11 ,  H10K2101/30 ,  H10K2101/90 ,  H10K2102/351

Abstract: The present disclosure provides a co-host material, a composition for forming a light emitting layer, and a light emitting device. The co-host material can at least partially solve the difficulty in the limited selection of thermally activated delayed fluorescent materials in the existing light emitting devices, and the difficulty in providing a light emitting layer of a blue light emitting device. The co-host material comprises a first compound and a second compound each having a specific general formula.

公开(公告)号：US12058913B2

公开(公告)日：2024-08-06

申请号：US17425786

申请日：2020-02-12

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei Yamazaki ,  Harue Osaka

IPC: H10K59/38 ,  H10K59/12 ,  H10K101/30

CPC classification number: H10K59/38 ,  H10K59/12 ,  H10K2101/30

Abstract: A display panel is provided. The display panel includes a display region, an insulating film, and a sealing film; the display region includes a pixel; and the pixel includes a display element and a color conversion layer. The insulating film covers the display element, the sealing film includes a region, the color conversion layer is sandwiched between the region and the insulating film, and the sealing film includes a region that is on the outside of the display region and in contact with the insulating film. The display element includes a first layer, a second layer, a third layer, and a fourth layer. The first layer contains a first material and a second material, the second layer contains a third material, the third layer contains a light-emitting material and a fourth material, the fourth layer contains a fifth material and a sixth material, the first material has a HOMO level higher than or equal to −5.7 eV and lower than or equal to −5.4 eV, the second material has an acceptor property, the third material has a lower HOMO level than the first material, the fifth material has a HOMO level higher than or equal to −6.0 eV, and the sixth material is an organic complex of alkali metal or an organic complex of alkaline earth metal.

公开(公告)号：US20240251584A1

公开(公告)日：2024-07-25

申请号：US18398075

申请日：2023-12-27

Applicant: Samsung Display Co., Ltd.

Inventor： Gyeongheon Kim ,  Eunhwa Jang ,  Sohae Kim ,  Jihye Kim ,  Saerom Park ,  Dongsun Yoo ,  Jintaek Cho

IPC: H10K50/12 ,  H10K59/38 ,  H10K59/40 ,  H10K85/30 ,  H10K85/40 ,  H10K85/60 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K50/121 ,  H10K59/38 ,  H10K59/40 ,  H10K85/342 ,  H10K85/40 ,  H10K85/622 ,  H10K85/633 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  H10K85/658 ,  H10K2101/30 ,  H10K2101/40

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. The interlayer includes a hole transport region and an emission layer, the hole transport region is between the first electrode and the emission layer, the hole transport region includes a first layer in direct contact with the emission layer, the emission layer includes a first host and a first emitter. The first emitter is to emit first light having a peak emission wavelength of about 610 nm to about 720 nm. The first layer includes a first material. Both an absolute value of a highest occupied molecular orbital (HOMO) energy level of the first material and an absolute value of the HOMO energy level of the first emitter are greater than an absolute value of a HOMO energy level of the first host.

公开(公告)号：US12029057B2

公开(公告)日：2024-07-02

申请号：US18134847

申请日：2023-04-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Tsunenori Suzuki ,  Yusuke Takita ,  Takumu Okuyama ,  Anna Tada

IPC: H10K50/11 ,  H10K50/15 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K50/11 ,  H10K50/15 ,  H10K2101/30 ,  H10K2101/40

Abstract: A novel light-emitting device is provided. Alternatively, a light-emitting device with favorable emission efficiency is provided. Alternatively, a light-emitting device with a favorable lifetime is provided. Alternatively, a light-emitting device with a low driving voltage is provided. Provided is a light-emitting device including an anode, a cathode, and a layer including an organic compound that is positioned between the anode and the cathode, in which the layer including the organic compound includes a first layer, a second layer, and a light-emitting layer in this order from the anode side, the first layer includes a first substance and a second substance, the second layer includes a third substance, the first substance is an organic compound a HOMO level of which is higher than or equal to −5.8 eV and lower than or equal to −5.4 eV, the second substance is a substance that has an electron-acceptor property with respect to the first substance, and the third substance is an organic compound having a structure in which at least two substituents comprising carbazole rings are bonded to a naphthalene ring.

公开(公告)号：US20240215302A1

公开(公告)日：2024-06-27

申请号：US18599472

申请日：2024-03-08

Applicant: Universal Display Corporation

Inventor： Michael Fusella ,  Nicholas J. Thompson

IPC: H10K50/85 ,  H01L33/44 ,  H10K50/11 ,  H10K101/10 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K50/85 ,  H01L33/44 ,  H10K50/11 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2102/3031 ,  H10K2102/331

Abstract: Provided are compounds, formulations comprising compounds, and devices that utilize compounds, where the devices include a substrate, a first electrode, an organic emissive layer comprising an organic emissive material disposed over the first electrode. The device includes an enhancement layer, comprising a plasmonic material exhibiting surface plasmon resonance that non-radiatively couples to the organic emissive material and transfers excited state energy from the organic emissive material to the non-radiative mode of surface plasmon polaritons. The enhancement layer is provided no more than a threshold distance away from the organic emissive layer, where the organic emissive material has a total non-radiative decay rate constant and a total radiative decay rate constant due to the presence of the enhancement layer. At least one of the organic emissive material and the organic emissive layer has a vertical dipole ratio (VDR) value of equal or greater than 0.33.

公开(公告)号：US12022727B2

公开(公告)日：2024-06-25

申请号：US17749791

申请日：2022-05-20

Applicant: UNIVERSAL DISPLAY CORPORATION

Inventor： Pierre-Luc T. Boudreault ,  Zhiqiang Ji ,  Bin Ma ,  Alan Deangelis ,  Alexey Borisovich Dyatkin ,  Jui-Yi Tsai

IPC: H01L51/00 ,  C07F15/00 ,  C09K11/06 ,  H10K50/12 ,  H10K85/30 ,  H10K85/60 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K101/10 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K85/346 ,  C07F15/0033 ,  C09K11/06 ,  H10K50/12 ,  H10K85/342 ,  H10K85/622 ,  H10K85/654 ,  H10K85/6572 ,  H10K85/6574 ,  H10K85/6576 ,  C09K2211/1029 ,  C09K2211/185 ,  H10K50/11 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K2101/10 ,  H10K2101/30 ,  H10K2101/40

Abstract: A compound including a first ligand LA of Formula I




is disclosed. The compound is useful as an emitter in phosphorescent OLEDs.

公开(公告)号：US20240206204A1

公开(公告)日：2024-06-20

申请号：US17781055

申请日：2022-05-25

Applicant: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.

Inventor： Guoqi XIA ,  Mugyeom KIM

IPC: H10K50/11 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K50/11 ,  H10K2101/30 ,  H10K2102/351

Abstract: A display panel includes a substrate, a first electrode, a light-emitting layer, and a second electrode. The first electrode is disposed on the substrate. The light-emitting layer is disposed on a surface of the first electrode away from the substrate. The light-emitting layer includes a light-emitting sublayer. A compressibility parameter of the light-emitting sublayer is greater than or equal to a first threshold, and the compressibility parameter is determined by an amount of deformation of the light-emitting sublayer under unit force.

公开(公告)号：US20240188436A1

公开(公告)日：2024-06-06

申请号：US18550531

申请日：2022-03-14

Applicant: KYULUX, INC.

Inventor： Hayato KAKIZOE

IPC: H10K85/60 ,  C09K11/06 ,  H10K50/12 ,  H10K101/20 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K85/6572 ,  C09K11/06 ,  H10K85/60 ,  H10K85/623 ,  H10K85/658 ,  C09K2211/1018 ,  H10K50/121 ,  H10K2101/20 ,  H10K2101/30 ,  H10K2102/3026

Abstract: A TAF-type organic light emitting device having a high efficiency and a high color purity, which contains a composition containing a first organic compound, a second organic compound of a delayed fluorescent material and a third organic compound of a fluorescent material satisfying the following formulae. ES1 represents a lowest excited singlet energy) E EM represents an emission wavelength on the short wavelength side, λPAB represents a wavelength of the peak top on the longest wavelength side of an absorption spectrum, λPEM represents a wavelength of the peak top of an emission spectrum. ES1(1)>ES1(2)>ES1(3); λEEM(2)

公开(公告)号：US11997861B2

公开(公告)日：2024-05-28

申请号：US18100054

申请日：2023-01-23

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi Seo ,  Nobuharu Ohsawa ,  Shunsuke Hosoumi ,  Takahiro Ishisone

IPC: H10K50/11 ,  H10K101/10 ,  H10K101/30

CPC classification number: H10K50/11 ,  H10K2101/10 ,  H10K2101/30

Abstract: A light-emitting element having high emission efficiency which includes a fluorescent material as a light-emitting substance is provided. A light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a light-emitting layer. The light-emitting layer includes a host material and a guest material. The host material has a difference of more than 0 eV and less than or equal to 0.2 eV between a singlet excitation energy level and a triplet excitation energy level. The guest material is capable of emitting fluorescence. The triplet excitation energy level of the host material is higher than a triplet excitation energy level of the guest material.

公开(公告)号：US11997858B2

公开(公告)日：2024-05-28

申请号：US17139848

申请日：2020-12-31

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hirokazu Miyashita ,  Itaru Takaya ,  Takayuki Ito ,  Moe Takahira ,  Tomona Yamaguchi ,  Satoru Shiobara ,  Tomokazu Kotake ,  Haruna Iida ,  Naoki Yamada ,  Jun Kamatani

IPC: H10K50/11 ,  F21S43/145 ,  H04N23/53 ,  H10K50/13 ,  H10K50/19 ,  H10K59/12 ,  H10K77/10 ,  H10K85/60 ,  H10K101/30 ,  H10K101/40 ,  H10K102/00

CPC classification number: H10K50/11 ,  F21S43/145 ,  H04N23/53 ,  H10K50/131 ,  H10K50/19 ,  H10K59/12 ,  H10K77/111 ,  H10K85/622 ,  H10K85/623 ,  H10K85/624 ,  H10K85/626 ,  H10K85/633 ,  H10K85/6574 ,  H10K85/6576 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2102/311

Abstract: An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high S1 level.