公开(公告)号：US20190131577A1

公开(公告)日：2019-05-02

申请号：US16143475

申请日：2018-09-27

Applicant: JOLED INC.

Inventor： Kosuke MISHIMA

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

Abstract: An organic electroluminescent element according to one embodiment of the disclosure includes a first reflective layer, a second reflective layer, an organic light-emitting layer, a silver electrode layer, and an ytterbium electron injection layer. The organic light-emitting layer is provided between the first reflective layer and the second reflective layer, and emits monochromatic light. The silver electrode layer is provided between the organic light-emitting layer and the second reflective layer. The ytterbium electron injection layer is in contact with the silver electrode layer on side of the organic light-emitting layer.

公开(公告)号：US20190019973A1

公开(公告)日：2019-01-17

申请号：US16028416

申请日：2018-07-06

Applicant: JOLED INC.

Inventor： Kosuke MISHIMA

IPC: H01L51/50

Abstract: An organic electroluminescent element includes, in order, a first electrode, an organic light-emitting layer, a buffer layer, a metal thin film, an organic electron transport layer, and a second electrode. The buffer layer includes an electrically-conductive organic material. The metal thin film includes a metal or a metal alloy. The organic electron transport layer is doped with a metal. The metal in the metal thin film is the same as the metal doped in the organic electron transport layer. The metal alloy in the metal thin film includes a metal that is the same as the metal doped in the organic electron transport layer.

公开(公告)号：US20180097192A1

公开(公告)日：2018-04-05

申请号：US15718381

申请日：2017-09-28

Applicant: JOLED INC.

Inventor： Kosuke MISHIMA

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

CPC classification number: H01L51/5004 ,  H01L51/0097 ,  H01L51/5012 ,  H01L51/5072 ,  H01L51/5076 ,  H01L51/5092 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5275 ,  H01L51/56 ,  H01L2251/301 ,  H01L2251/5338 ,  H01L2251/552 ,  H01L2251/558

Abstract: An organic EL element includes an anode, a cathode opposing the anode, a light-emitting layer disposed between the anode and the cathode, an electron transport layer disposed in contact with a cathode-side surface of the light-emitting layer, and an electron injection layer disposed between the electron transport layer and the cathode, in contact with the electron transport layer. Lowest unoccupied molecular orbital (LUMO) level of the electron transport layer is lower than at least one of LUMO level of the electron injection layer and Fermi level of a metal material included in the electron injection layer, and film thickness of the electron injection layer is greater than film thickness of the electron transport layer.

公开(公告)号：US20170288162A1

公开(公告)日：2017-10-05

申请号：US15472427

申请日：2017-03-29

Applicant: JOLED INC. ,  JAPAN DISPLAY INC.

Inventor： Toshiyuki AKIYAMA ,  Kosuke MISHIMA ,  Takahiro KOMATSU

IPC: H01L51/50 ,  H01L51/52

Abstract: ΔE1 denoting difference between LUMO energy level of hole transport and LUMO energy level of light-emitting layer, μe1 denoting electron mobility of the hole transport layer, and μe2 denoting electron mobility of the light-emitting layer satisfy μ   e   1 μ   e   2 × exp  ( - Δ   E   1 × 38.681731 ) ≤ 2.090 × 10 - 2 when    μ   e   1