Title:
An ink constituent for organic light emitting elements, and an organic light emitting element
Document Type and Number:
Japanese Patent JP6249133
Kind Code:
B2
Abstract:
There is provided an ink composition for an organic light-emitting device which can easily form a light-emitting layer having more excellent uniformity and which is suitable for forming a light-emitting layer by a wet method. An ink composition for an organic light-emitting device includes a light-emitting material, a binder resin, and a solvent, the binder resin containing a multi-branched copolymer of a monovinyl compound composed of a styrene-based monomer as an essential component with a multifunctional vinyl compound containing two or more ethylenically unsaturated double bonds, and the copolymer having a weight-average absolute molecular weight within a range of 200,000 to 800,000 determined by gel permeation chromatography using a multi-angle laser light scattering detector and a degree of branching within a range of 0.20 to 0.55 determined from an inertial radius. An organic light-emitting device includes a positive electrode, a light-emitting layer, and a negative electrode, the light-emitting layer containing the binder resin.
Inventors:
Yusaku Goto
Eiji Otoki
Hiroyuki Fukui
Eiji Otoki
Hiroyuki Fukui
Application Number:
JP2017500297A
Publication Date:
December 20, 2017
Filing Date:
December 15, 2015
Export Citation:
Assignee:
DIC Corporation
International Classes:
H01L51/50; C08F212/08; C08F290/06; C08G63/91; C08G65/332; C09D11/10
Domestic Patent References:
| JP2014144931A | ||||
| JP2013516053A | ||||
| JP2012109286A | ||||
| JP2011202071A | ||||
| JP2011207140A |
Attorney, Agent or Firm:
Kono Tsuyo
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