公开(公告)号：US20200152906A1

公开(公告)日：2020-05-14

申请号：US16675468

申请日：2019-11-06

Applicant: JOLED INC.

Inventor： Shina KIRITA ,  Takayuki SHIMAMURA ,  Naoto ODA

IPC: H01L51/52 ,  H01L51/56

Abstract: An organic electroluminescent device includes, in order, a first electrode, a light-emitting layer, a resistive layer, and a second electrode. The resistive layer has a specific resistance within a range of 1×104Ω·cm or greater and 5×106Ω·m or less and includes a mixed material including two or more of zinc oxide, gallium oxide, and silicon dioxide and having a composition ratio within a predetermined range.

公开(公告)号：US20210098745A1

公开(公告)日：2021-04-01

申请号：US17035779

申请日：2020-09-29

Applicant: JOLED Inc.

Inventor： Shina KIRITA

IPC: H01L51/52 ,  H01L27/32 ,  H01L51/00 ,  H01L51/56

Abstract: A light-emitting element includes: a light-reflective first electrode; a light-emitting layer above the first electrode; a light-transmissive second electrode above the light-emitting layer; a first light-transmissive layer on the second electrode; and a second light-transmissive layer on the first layer. First optical cavity structure is formed between surface of the first electrode facing the light-emitting layer and surface of the second electrode facing the light-emitting layer. The first optical cavity structure corresponds to, as peak wavelength, first wavelength longer than peak wavelength of light emitted from the light-emitting layer. Second optical cavity structure is formed between the surface of the first electrode facing the light-emitting layer and an interface between the first layer and the second layer. The second optical cavity structure corresponds to, as peak wavelength, second wavelength shorter than the first wavelength. The first and second layers differ in refractive index from each other by 0.3 or greater.

公开(公告)号：US20190305243A1

公开(公告)日：2019-10-03

申请号：US16361956

申请日：2019-03-22

Applicant: JOLED INC.

Inventor： Shina KIRITA ,  Takayuki SHIMAMURA

IPC: H01L51/50 ,  H01L51/00

Abstract: An organic electroluminescent element includes, in order, a first electrode, an organic layer that includes an organic electroluminescent layer, an interface adjustment layer, a resistive layer, and a second electrode. The resistive layer has a specific resistance higher than a specific resistance of the second electrode. The interface adjustment layer has a specific resistance higher than the specific resistance of the second electrode and lower than the specific resistance of the resistive layer.