Title:
ELパネル及びそれを用いた照明装置及び表示装置
Document Type and Number:
Japanese Patent JP4873099
Kind Code:
B2
Abstract:
The present invention provides an EL panel, an EL illumination device, and an EL display device in which irregularity of luminance does not easily occur in the in-plane of the EL element by a protection sheet for suppressing conduction of heat on the outermost surface of the EL element. There is an EL panel including: a light-transmissive substrate; an EL element including a light-emitting medium layer interposed between a cathode and an anode, the EL element being provided on one surface of the light-transmissive substrate; and a protection sheet on the other surface of the light-transmissive substrate of the EL element. The protection sheet has a surface opposite to the light-transmissive substrate, the shape of the surface includes rounded convex shapes and prism shapes. Each of the rounded shapes has an apex that is a center point of a cross-section farthest from a bottom surface where the cross-section is parallel to the bottom surface of the unit convex shape and the area becomes smaller in a direction from the bottom surface of the rounded convex shape to a top portion thereof. Irregularity of luminance in the in-plane of the EL element does not easily occur by optimizing the height of the apex and the distance between the apexes.
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Inventors:
Hideaki Homma
Kagoya Akito
Moronaga Kohei
Kagoya Akito
Moronaga Kohei
Application Number:
JP2010546166A
Publication Date:
February 08, 2012
Filing Date:
March 25, 2010
Export Citation:
Assignee:
Toppan Printing Co., Ltd.
International Classes:
H05B33/02; G09F9/30; H01L27/32; H01L51/50
Domestic Patent References:
| JP2006030872A | 2006-02-02 | |||
| JP2004205849A | 2004-07-22 | |||
| JP2006100257A | 2006-04-13 | |||
| JP2008027689A | 2008-02-07 | |||
| JP2005317435A | 2005-11-10 |
Foreign References:
| WO2008056473A1 | 2008-05-15 |