Title:
INK COMPOSITION FOR ORGANIC LIGHT-EMITTING ELEMENTS, AND ORGANIC LIGHT-EMITTING ELEMENT PRODUCTION METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2017/221802
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an ink composition for organic light-emitting elements, which, when a compound having a pyrene skeleton and/or a compound having an anthracene skeleton is used as a host organic material, exhibits excellent inkjet discharge stability and is capable of achieving high emission efficiency. Provided is an ink composition for organic light-emitting elements, which comprises: a light-emitting host material containing a compound having a pyrene skeleton and/or a compound having an anthracene skeleton; and a solvent having a vapor pressure of 5 mmHg or less, wherein the three-dimensional distance (Ra) represented by formula (a) is 8 or less (in the formula, dDhost, dPhost, and dHhost represent a dispersion term, polarization term, and hydrogen bond term in the Hansen solubility parameter of the light-emitting host material, respectively; and dDsolvent, dPsolvent, and dHsolvent represent a dispersion term, polarization term, and hydrogen bond term in the Hansen solubility parameter of the solvent, respectively.)
Inventors:
WAKITA MASANORI (JP)
OTSUKI EIJI (JP)
OTSUKI EIJI (JP)
Application Number:
PCT/JP2017/022077
Publication Date:
December 28, 2017
Filing Date:
June 15, 2017
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
H05B33/10; H01L51/50
Domestic Patent References:
| WO2015018480A1 | 2015-02-12 | |||
| WO2016093111A1 | 2016-06-16 |
Foreign References:
| JP2013144675A | 2013-07-25 | |||
| JP2013527980A | 2013-07-04 | |||
| JP2013214496A | 2013-10-17 | |||
| JP2013533606A | 2013-08-22 |
Attorney, Agent or Firm:
KONO Michihiro (JP)
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