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 (Inc. 1, Sakura-machi, Hino-sh, Tokyo 11, 〒1918511, JP)
當間 恭雄 (〒11 東京都日野市さくら町１番地コニカミノルタテクノロジーセンター株式会社内 Tokyo, 〒1918511, JP)
當間 恭雄 (〒11 東京都日野市さくら町１番地コニカミノルタテクノロジーセンター株式会社内 Tokyo, 〒1918511, JP)
Application Number:
JP2011/061275
Publication Date:
December 01, 2011
Filing Date:
May 17, 2011
Export Citation:
Assignee:
KONICA MINOLTA HOLDINGS, INC. (6-1 Marunouchi 1-chome, Chiyoda-ku Tokyo, 05, 〒1000005, JP)
コニカミノルタホールディングス株式会社 (〒05 東京都千代田区丸の内一丁目６番１号 Tokyo, 〒1000005, JP)
TAIMA Yasuo (Inc. 1, Sakura-machi, Hino-sh, Tokyo 11, 〒1918511, JP)
コニカミノルタホールディングス株式会社 (〒05 東京都千代田区丸の内一丁目６番１号 Tokyo, 〒1000005, JP)
TAIMA Yasuo (Inc. 1, Sakura-machi, Hino-sh, Tokyo 11, 〒1918511, JP)
International Classes:
G02B5/02; F21V3/00; F21V3/04; H01L51/50; H05B33/02; F21Y105/00
Claims:
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