Title:
ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2016/076384
Kind Code:
A1
Abstract:
The present invention provides an organic EL element which sequentially comprises at least a positive electrode, a hole injection layer, a first hole transport layer, a second hole transport layer, a light emitting layer, an electron transport layer and a negative electrode in this order, and which is characterized in that the second hole transport layer contains an arylamine compound having a specific structure and the electron transport layer contains a pyrimidine derivative having a specific structure. This organic EL element has high efficiency, low driving voltage and a longer service life.
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Inventors:
HAYASHI SHUICHI (JP)
KANDA DAIZO (JP)
TOGASHI KAZUNORI (JP)
KANDA DAIZO (JP)
TOGASHI KAZUNORI (JP)
Application Number:
PCT/JP2015/081821
Publication Date:
May 19, 2016
Filing Date:
November 12, 2015
Export Citation:
Assignee:
HODOGAYA CHEMICAL CO LTD (JP)
International Classes:
H01L51/50; C07B59/00; C07C211/55; C07C211/58; C07D307/91; C07D401/10; C09K11/06
Domestic Patent References:
| WO2014129201A1 | 2014-08-28 | |||
| WO2014199567A1 | 2014-12-18 | |||
| WO2015190400A1 | 2015-12-17 |
Foreign References:
| JP2007191465A | 2007-08-02 | |||
| JP2005339823A | 2005-12-08 | |||
| JP2011009758A | 2011-01-13 |
Other References:
YONGMING YIN ET AL.: "High-efficiency and low- efficiency-roll-off single-layer white organic light-emitting devices with a bipolar transport host", APPLIED PHYSICS LETTERS, vol. 101, no. 063306, pages 063306-1 - 063306-4
See also references of EP 3220437A4
See also references of EP 3220437A4
Attorney, Agent or Firm:
ONO, Hisazumi et al. (JP)
Ono Pure in addition (JP)
Ono Pure in addition (JP)
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