EL PANEL, AND ILLUMINATION DEVICE AND DISPLAY DEVICE USING THE SAME

摘要

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.