| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a see-through light-emitting element with high light extraction efficiency, in which stripe lines are less visible. <P>SOLUTION: A light-emitting element 10 includes an organic EL element 140 and a structure layer 100 provided for a light-emitting surface 144 of the organic EL element 140. The structure layer 100 includes on a surface 10U opposite to the organic EL element 140, an uneven structure including a first line 113 extending in a first direction, a second line 114 extending in a second direction, which intersects with the first direction, and a third line 115 extending in a third direction, which intersects with the first direction and the second direction. A projection area formed by projecting a slope part of the uneven structure on a plane, which is parallel to a flat surface part of the uneven structure, in a direction perpendicular to the flat surface part is 0.1 times or less of the total area of the flat surface part. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
