Title:
発光素子
Document Type and Number:
Japanese Patent JP5834889
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a light-emitting element which, while being kept to be see through, can extract light with high efficiency and further makes a streak due to a salient or concavity to be hardly recognizable.SOLUTION: The light-emitting element comprises a double side emission type organic EL element consisting of a first transparent electrode layer, a luminescent layer, and a second transparent electrode layer stacked in that order and a light outgoing plane structure layer provided on the surface on at least one side of the organic EL element. The light outgoing plane structure layer includes on a surface opposite to the organic EL element a flat face part parallel to the surface on one side of the organic EL element and an uneven structure having a slant face part inclined against the flat face part, where a projected area formed by projecting the slant face part in a direction perpendicular to the flat face part to a plane surface parallel to the flat face part is 0.1 time or less the whole area of the flat face part, and the slant face part includes a curved face part in a boundary with the flat face part.
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Inventors:
Kenichi Harai
Application Number:
JP2011282097A
Publication Date:
December 24, 2015
Filing Date:
December 22, 2011
Export Citation:
Assignee:
Zeon Corporation
International Classes:
H05B33/02; H01L51/50; H05B33/12
Domestic Patent References:
| JP2004031221A |
Attorney, Agent or Firm:
Hiroaki Sakai