公开(公告)号：US11737332B2

公开(公告)日：2023-08-22

申请号：US17721218

申请日：2022-04-14

Applicant: BOE Technology Group Co., Ltd.

Inventor： Qingyu Huang ,  Huajie Yan ,  Liangliang Kang ,  Fudong Chen ,  Zhiqiang Jiao

IPC: H01L23/00 ,  H10K59/35 ,  H10K50/11 ,  H10K50/115 ,  H10K50/17 ,  H10K59/38 ,  H10K71/00 ,  H10K101/10 ,  H10K101/40

CPC classification number: H10K59/353 ,  H10K50/11 ,  H10K50/115 ,  H10K50/171 ,  H10K59/38 ,  H10K71/00 ,  H10K2101/10 ,  H10K2101/40

Abstract: A light emitting element, includes a first light emitting layer and a second light emitting layer sequentially stacked; and an intermediate layer between the first light emitting layer and the second light emitting layer, and being in direct contact with the first light emitting layer on one side and in direct contact with the second light emitting layer on another side. Each of the intermediate layer, the first light emitting layer, and the second light emitting layer includes a same host material. The intermediate layer is a non-light emitting layer, and is an undoped layer absent of a dopant for emitting light. The light emitting element is configured to emit a composite light including the first light of the first wavelength range and the second light of the second wavelength range. The first wavelength range includes wavelength longer than the second wavelength range.

公开(公告)号：US11737297B2

公开(公告)日：2023-08-22

申请号：US17071556

申请日：2020-10-15

Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.

Inventor： Liang Gao ,  Huiqing Pang ,  Menglan Xie ,  Chuanjun Xia ,  Chi Yuen Raymond Kwong

IPC: H10K50/13 ,  H10K50/11 ,  H10K71/10 ,  H10K71/30 ,  H10K85/60 ,  H10K101/40 ,  H10K101/30 ,  H10K102/00

CPC classification number: H10K50/13 ,  H10K50/11 ,  H10K71/10 ,  H10K71/30 ,  H10K85/653 ,  H10K85/654 ,  H10K85/655 ,  H10K85/6574 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2102/302

Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises a first electrode, a second electrode, and at least two light emitting units disposed between the first electrode and the second electrode, wherein the light emitting units each comprises at least one light emitting layer, and a connection layer of a specific structure is further disposed between adjacent two light emitting units. By using a connection layer of a specific structure, the organic light-emitting device reduces the device voltage, prolongs life time of the device, and improves the device performance.

公开(公告)号：US11700734B2

公开(公告)日：2023-07-11

申请号：US16953370

申请日：2020-11-20

Applicant: JOLED Inc.

Inventor： Toshiyuki Akiyama ,  Yasuhiro Sekimoto ,  Muneharu Sato ,  Shinichiro Ishino ,  Tomohiko Oda ,  Mineki Hasegawa

IPC: H10K50/11 ,  H10K71/00 ,  H10K101/40 ,  H10K50/16 ,  H10K59/35 ,  H10K101/30

CPC classification number: H10K50/11 ,  H10K71/00 ,  H10K50/166 ,  H10K59/35 ,  H10K2101/30 ,  H10K2101/40

Abstract: An organic electroluminescence element including an anode, a light-emitting layer, a functional layer, and a cathode stacked in this order. The light-emitting layer and the functional layer are in contact with each other. Hole mobility of the light-emitting layer is greater than electron mobility of the light-emitting layer. The electron mobility of the light-emitting layer is equal to or greater than an effective electron mobility of the functional layer. A highest occupied molecular orbital (HOMO) level of a first functional material included in the light-emitting layer is at least 0.4 eV greater than a HOMO level of a second functional material included in the functional layer.

公开(公告)号：US11690240B2

公开(公告)日：2023-06-27

申请号：US17400457

申请日：2021-08-12

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xin Zhang

IPC: H01L51/50 ,  H10K50/15 ,  H10K30/80 ,  H10K50/11 ,  H10K50/16 ,  H10K50/115 ,  H10K71/00 ,  H10K101/40

CPC classification number: H10K50/15 ,  H10K30/865 ,  H10K50/11 ,  H10K50/115 ,  H10K50/16 ,  H10K71/00 ,  H10K2101/40

Abstract: An electroluminescent device, a manufacturing method thereof, and a display apparatus are provided. The electroluminescent device includes an anode layer, a light emitting layer, a cathode layer, a hole transport layer located between the anode layer and the light emitting layer, and a electron transport layer located between the cathode layer and the light emitting layer. The electroluminescent device further includes: a first interface modification layer between the light emitting layer and one of the hole transport layer and the electron transport layer; wherein an energy level of the first interface modification layer matches an energy level of the light emitting layer and an energy level of the one of the hole transport layer and the electron transport layer.

公开(公告)号：US20230189543A1

公开(公告)日：2023-06-15

申请号：US17923775

申请日：2021-06-14

Applicant: Sony Group Corporation ,  Sony Semiconductor Solutions Corporation

Inventor： Shoji Sudo ,  Jun Yoshida

IPC: H10K50/13

CPC classification number: H10K50/13 ,  H10K2101/40

Abstract: A light emitting element (10) of the present disclosure includes at least a first electrode (31), a second electrode (32), and a light emitting unit (30) sandwiched between the first electrode (31) and the second electrode (32), the light emitting unit 30 at least includes at least two light emitting layers (33a, 33b) that emit different colors and an intermediate layer (33d) located between the two light emitting layers (33a, 33b), the intermediate layer (33d) includes a first organic material (33e) having hole transport properties and a second organic material 33f having electron transport properties, and when a band gap energy of the first organic material (33e) is BGHTM and a band gap energy of a material having a maximum band gap energy among materials constituting two adjacent light emitting layers (33a, 33b) is BGmax, BGHTM-BGmax ≥ 0.2 eV is satisfied.

公开(公告)号：US12127418B2

公开(公告)日：2024-10-22

申请号：US18084642

申请日：2022-12-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Satoshi Seo ,  Nobuharu Ohsawa

IPC: H10K50/11 ,  H10K50/13 ,  H10K59/32 ,  H10K59/35 ,  H10K59/38 ,  H10K101/40

CPC classification number: H10K50/11 ,  H10K50/131 ,  H10K59/351 ,  H10K59/32 ,  H10K59/38 ,  H10K2101/40

Abstract: A light-emitting device, an electronic device, and a display device each consume less power are provided. The light-emitting device includes a first light-emitting element, a second light-emitting element, and a third light-emitting element that share an EL layer. The EL layer includes a layer containing a light-emitting material that emits blue fluorescence and a layer containing a light-emitting material that emits yellow or green phosphorescence. Light emitted from the second light-emitting element enters a color filter layer or a second color conversion layer, and light emitted from the third light-emitting element enters a first color conversion layer.

公开(公告)号：US12122790B2

公开(公告)日：2024-10-22

申请号：US17297993

申请日：2019-11-29

Applicant: Sumitomo Chemical Co., Ltd.

Inventor： Nir Yaacobi-Gross

IPC: C07D519/00 ,  H10K30/30 ,  H10K85/60 ,  G01N21/25 ,  G01N21/31 ,  H10K50/11 ,  H10K101/40

CPC classification number: C07D519/00 ,  H10K30/30 ,  H10K85/655 ,  H10K85/6576 ,  G01N21/255 ,  G01N21/31 ,  H10K50/11 ,  H10K2101/40

Abstract: A compound of formula (I): Each R1 and R2 is, independently in each occurrence, a substituent. Each R3-R10 is, independently in each occurrence, H or a substituent. At least one occurrence of at least one of R11-R14 is CN. Each Y is independently O or S. Z1-Z4 are each independently a direct bond or Z1, Z2, Z3 and/or Z4 together with, respectively, R4 or R5, R7 or R8, R6, or R9 forms an aromatic or heteroaromatic group. The compound of formula (I) may be provided in an active layer of an organic electronic device, e.g. as an electron acceptor in a bulk heterojunction layer of an organic photodetector. A photosensor may comprise the organic photodetector and a light source, e.g. a near infra-red light source.

公开(公告)号：US20240341169A1

公开(公告)日：2024-10-10

申请号：US18731932

申请日：2024-06-03

Applicant: UNIVERSAL DISPLAY CORPORATION

Inventor： Pierre-Luc T. BOUDREAULT ,  Zhiqiang JI ,  Bin MA ,  Alan DEANGELIS ,  Alexey Borisovich DYATKIN ,  Jui-Yi TSAI

IPC: H10K85/30 ,  C07F15/00 ,  C09K11/06 ,  H10K50/11 ,  H10K50/12 ,  H10K50/15 ,  H10K50/16 ,  H10K50/17 ,  H10K50/18 ,  H10K85/60 ,  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：US20240334817A1

公开(公告)日：2024-10-03

申请号：US18577245

申请日：2022-07-01

Applicant: BOE Technology Group Co., Ltd.

Inventor： Lixia QIU ,  Lei CHEN ,  Dongxu ZHANG ,  Bingyan LIANG

IPC: H10K85/60 ,  H10K50/12 ,  H10K50/125 ,  H10K85/30 ,  H10K101/25 ,  H10K101/30 ,  H10K101/40 ,  H10K102/00

CPC classification number: H10K85/633 ,  H10K50/12 ,  H10K50/125 ,  H10K85/324 ,  H10K85/342 ,  H10K85/346 ,  H10K85/371 ,  H10K85/623 ,  H10K85/636 ,  H10K85/6574 ,  H10K85/6576 ,  H10K2101/25 ,  H10K2101/30 ,  H10K2101/40 ,  H10K2102/351

Abstract: An organic electroluminescent device, a display panel, and a display device are disclosed. The organic electroluminescent device includes: an anode and a cathode disposed opposite to each other, a light emitting layer located between the anode and the cathode, an electron blocking layer located between the light emitting layer and the anode, and a hole transport layer located between the electron blocking layer and the anode. The light emitting layer includes an exciplex formed by mixing an electron-type host material and a hole-type host material, and a guest material with which the exciplex is doped. The electron mobility of the hole transport layer is greater than that of the electron blocking layer.

公开(公告)号：US20240324253A1

公开(公告)日：2024-09-26

申请号：US18734442

申请日：2024-06-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Changsong CHEN ,  Yongsheng GUO ,  Guodong CHEN ,  Chuying OUYANG

IPC: H10K30/40 ,  H10K85/50 ,  H10K101/30 ,  H10K101/40

CPC classification number: H10K30/40 ,  H10K85/50 ,  H10K2101/30 ,  H10K2101/40

Abstract: A perovskite solar cell includes a perovskite layer comprising a first surface and a second surface that are opposite each other in the thickness direction thereof; a hole transport layer provided on the first surface; and an electron transport layer provided on the second surface. The electron transport layer comprises at least two sub-layers and a doping material, and each of the sub-layers has a conduction band bottom energy level lower than that of the hole transport layer and a valence band top energy level lower than that of the hole transport layer.