Title:
LIGHT EXTRACTION SHEET, ORGANIC ELECTROLUMINESCENT ELEMENT, AND LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/148823
Kind Code:
A1
Abstract:
Disclosed are: a non-conventional light extraction sheet which has a good balance between improvement of the light extraction efficiency and suppression of color change with the angle of observation; an organic EL element using the light extraction sheet; and a lighting device using the organic EL element. Specifically disclosed is a light extraction sheet which is characterized by comprising, on a transparent resin film, a light diffusion layer that is obtained by dispersing light diffusing particles having an average particle diameter of 0.2-1.0 μm (inclusive) in a binder resin and a recessed and projected layer that contains a binder resin and spherical particles having an average particle diameter of 3-10 μm (inclusive).
Inventors:
TAIMA YASUO (JP)
HIYAMA KUNIMASA (JP)
HIYAMA KUNIMASA (JP)
Application Number:
PCT/JP2011/061275
Publication Date:
December 01, 2011
Filing Date:
May 17, 2011
Export Citation:
Assignee:
KONICA MINOLTA HOLDINGS INC (JP)
TAIMA YASUO (JP)
HIYAMA KUNIMASA (JP)
TAIMA YASUO (JP)
HIYAMA KUNIMASA (JP)
International Classes:
G02B5/02; F21V3/00; F21V3/04; H01L51/50; H05B33/02; F21Y105/00
Domestic Patent References:
| WO2006095632A1 | 2006-09-14 |
Foreign References:
| JP2004004777A | 2004-01-08 | |||
| JP2004271666A | 2004-09-30 | |||
| JP2008145499A | 2008-06-26 | |||
| JP2005316413A | 2005-11-10 | |||
| JP2009187804A | 2009-08-20 |
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