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Title:
CHARGE-TRANSPORTING VARNISH
Document Type and Number:
WIPO Patent Application WO/2013/129249
Kind Code:
A1
Abstract:
A charge-transporting thin film having excellent flatness can be obtained with good repeatability using the charge-transporting varnish of the present invention, which contains: a charge transportation substance comprising a charge-transporting monomer or a charge-transporting oligomer or polymer having a number-average molecular weight of 200-50,000, or a charge transporting material comprising the charge transportation substance and a dopant substance; and a mixed solvent including at least one type of good solvent and at least one type of poor solvent; the absolute value of the boiling point difference ΔT°C of the good solvent and the poor solvent satisfying the relation |ΔT| < 20°C; the viscosity at 25°C being 7.5 mPa•s or less; the surface tension at 23°C being 30.0-40.0 mN/m; and the charge-transporting material being dissolved or uniformly dispersed in the mixed solvent.

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Inventors:
TAKEDA KAYO (JP)
YOSHIMOTO TAKUJI (JP)
Application Number:
PCT/JP2013/054508
Publication Date:
September 06, 2013
Filing Date:
February 22, 2013
Export Citation:
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Assignee:
NISSAN CHEMICAL IND LTD (JP)
International Classes:
H01L51/50; C09D5/00; C09D7/12; C09D201/00; H01B1/20; H01B5/14; H01B13/00
Domestic Patent References:
WO2010058777A12010-05-27
WO2007049631A12007-05-03
WO2010041701A12010-04-15
WO2004043117A12004-05-21
WO2004043117A12004-05-21
WO2005107335A12005-11-10
WO2007049631A12007-05-03
WO2008032617A12008-03-20
WO2008032616A12008-03-20
WO2008129947A12008-10-30
WO2005000832A12005-01-06
WO2006025342A12006-03-09
WO2009096352A12009-08-06
Foreign References:
JP2008273896A2008-11-13
JP2010123930A2010-06-03
Other References:
BULLETIN OF CHEMICAL SOCIETY OF JAPAN, vol. 67, 1994, pages 1749 - 1752
SYNTHETIC METALS, vol. 84, 1997, pages 119 - 120
BULLETIN OF CHEMICAL SOCIETY, vol. 67, 1994, pages 1749 - 1752
See also references of EP 2822050A4
Attorney, Agent or Firm:
KOJIMA TAKASHI (JP)
Takashi Kojima (JP)
Download PDF:
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Claims:



 
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