(19)
(11)EP 3 618 136 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
11.03.2020 Bulletin 2020/11

(43)Date of publication A2:
04.03.2020 Bulletin 2020/10

(21)Application number: 19186679.7

(22)Date of filing:  17.07.2019
(51)International Patent Classification (IPC): 
H01L 51/52(2006.01)
H01L 51/54(2006.01)
(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30)Priority: 31.08.2018 JP 2018162568

(71)Applicant: Mikuni Electron Corporation
Saitama-shi, Saitama 336-0021 (JP)

(72)Inventor:
  • TANAKA, Sakae
    Saitama-shi Saitama 336-0021 (JP)

(74)Representative: Horn Kleimann Waitzhofer Patentanwälte PartG mbB 
Ganghoferstrasse 29a
80339 München
80339 München (DE)

  


(54)ORGANIC ELECTROLUMINESCENCE ELEMENT INCLUDING CARRIER INJECTION AMOUNT CONTROL ELECTRODE


(57) An organic electroluminescence element (200a) includes a first electrode (102), a third electrode (118) including a region overlapping the first electrode, a first insulating layer (104) between the first electrode (102) and the third electrode (118), a second insulating layer (120) between the first insulating layer (104) and the third electrode (118) and including an opening, an electron transfer layer (106) between the first insulating layer (104) and the third electrode(118), a light emitting layer (112), containing an organic electroluminescence material, between the electron transfer layer (106) and the third electrode (118), and a second electrode (108) located between the first insulating layer (104) and the second insulating layer (120) and electrically connected with the electron transfer layer (106). The organic electroluminescence element (200a) includes an overlap region where the third electrode (118), the light emitting layer (112), the electron transfer layer (106), the first insulating layer (104) and the first electrode (102) have overlapping region overlapping in the opening of the second insulating layer (120).







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