公开(公告)号：US10381589B2

公开(公告)日：2019-08-13

申请号：US15220852

申请日：2016-07-27

Applicant: JOLED INC.

Inventor： Kosuke Mishima ,  Junko Tanaka ,  Hiroshi Katagiri ,  Takahiro Komatsu

IPC: H01L51/50 ,  H01L51/52

Abstract: An organic electroluminescence (EL) element including an anode, a light-emitting layer above the anode, a first functional layer on and in contact with the light-emitting layer, a second functional layer on and in contact with the first functional layer, and a cathode above the second functional layer. A lowest unoccupied molecular orbital (LUMO) level of the first functional layer is lower than at least one of a LUMO level of the second functional layer and a Fermi level of a metal material included in the second functional layer.

公开(公告)号：US10297776B2

公开(公告)日：2019-05-21

申请号：US15204288

申请日：2016-07-07

Applicant: JOLED INC.

Inventor： Kosuke Mishima ,  Yoshiyuki Ota ,  Junko Tanaka ,  Takahiro Komatsu ,  Hiroshi Katagiri

IPC: H01L29/08 ,  H01L51/50 ,  H01L27/32 ,  H01L51/00

Abstract: An organic electroluminescence (EL) element including an anode, a cathode opposing the anode, a light-emitting layer between the anode and the cathode, a hole transport layer in contact with the light-emitting layer, between the light-emitting layer and the anode, and an electron transport layer in contact with the light-emitting layer, between the light-emitting layer and the cathode. A difference between a lowest unoccupied molecular orbital (LUMO) level of an organic material included in the light-emitting layer and a LUMO level of an organic material included in the electron transport layer is greater than a difference between a highest occupied molecular orbital (HOMO) level of an organic material included in the hole transport layer and a HOMO level of the organic material included in the light-emitting layer.

公开(公告)号：US10181582B2

公开(公告)日：2019-01-15

申请号：US15124476

申请日：2015-02-24

Applicant: JOLED INC.

Inventor： Noriyuki Matsusue ,  Hiroshi Katagiri

IPC: H01L51/52 ,  H01L51/54 ,  H01L51/50 ,  H01L51/56 ,  H01L27/32

Abstract: An organic EL element including an anode; a light-emitting layer above the anode; a first interlayer on the light-emitting layer, the first interlayer including a fluoride of a first metal that is an alkali metal or alkaline earth metal; a second interlayer on the first interlayer, the second interlayer including a second metal that has a property of cleaving a bond between the first metal and fluorine in the fluoride; a cathode on the second interlayer; and a sorption layer above the cathode, the sorption layer including a third metal that has a property of taking up and holding at least one of moisture and oxygen. A thickness D1 of the first interlayer and a thickness D2 of the second interlayer satisfy 5%≤D2/D1≤25%.

公开(公告)号：US11462707B2

公开(公告)日：2022-10-04

申请号：US17027727

申请日：2020-09-22

Applicant: JOLED Inc.

Inventor： Hiroshi Katagiri ,  Takahiro Komatsu

IPC: H01L51/50 ,  H01L51/52 ,  H01L51/56

Abstract: A display panel including a substrate, anodes disposed on or above the substrate, light-emitting layers disposed on or above the anodes, a first intermediate layer disposed on or above the light-emitting layers, a second intermediate layer disposed on the first intermediate layer, and a cathode disposed on or above the second intermediate layer. The first intermediate layer includes a fluoride of a first metal or a complex of the first metal. The second intermediate layer includes a second metal. The anodes are light-transmissive and the cathode is light-reflective, or the anodes are light-reflective and the cathode is light-transmissive. The first metal is selected from a group consisting of alkali metals and alkaline earth metals. The second metal is selected from rare earth metals.