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：US20220199930A1

公开(公告)日：2022-06-23

申请号：US17557072

申请日：2021-12-21

Applicant: JOLED Inc.

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

IPC: H01L51/50 ,  H01L51/56

Abstract: An organic EL element including an anode, a cathode, and a light emitting layer between the anode and the cathode. The light emitting layer includes a fluorescent material and a host material. A difference between a lowest unoccupied molecular orbital (LUMO) level of the fluorescent material and a highest occupied molecular orbital (HOMO) level of the fluorescent material is less than or equal to a difference between a LUMO level and a HOMO level of the host material. The LUMO level of the fluorescent material is equal to or higher than the LUMO level of the host material. The HOMO level of the fluorescent material is equal to or higher than the HOMO level of the host material, and a difference in energy level between the HOMO level of the fluorescent material and the HOMO level of the host material is 0.3 eV or less.

公开(公告)号：US10957856B2

公开(公告)日：2021-03-23

申请号：US16295407

申请日：2019-03-07

Applicant: JOLED INC.

Inventor： Yasuhiro Yamauchi ,  Shinichiro Ishino ,  Tomohiko Oda ,  Mineki Hasegawa ,  Yasuhiro Sekimoto

IPC: H01L51/00 ,  H01L51/56 ,  H01L51/50 ,  H01L27/32

Abstract: Disclosed is a method for manufacturing an organic EL display panel in which a plurality of organic electroluminescence elements each including an organic layer are arranged on an upper side of a substrate. The method includes applying an ink obtained by dissolving or dispersing an organic material in a solvent to a preset application area over the substrate, and cooling the ink applied in the applying within a period until the ink is dried, to lower an ink temperature to a second temperature lower than a first temperature of the ink at a time of application thereof.