Title:
LIGHT EMITTING ELEMENT, LIGHT EMITTING DEVICE, DISPLAY DEVICE, LIGHTING DEVICE, AND ELECTRONIC APPARATUS
Document Type and Number:
Japanese Patent JP2016058404
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a multicolor light emitting element in a light-emitting element using fluorescent emission and phosphorescent emission, which is advantageous to practical use.SOLUTION: A light emitting element includes a lamination structure consisting of a first light emitting layer containing host material and a fluorescent emission substance and a second light emitting layer containing two kinds of organic compounds forming an excited complex and a substance capable of converting triplet excitation energy into light emission. The light emitting element is more useful in which a peak of light emission spectrum of the light emission from the first light emitting layer exists closer to a short wavelength side than that of light emission from the second light emitting layer.SELECTED DRAWING: Figure 1
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Inventors:
ISHIZONE TAKAHIRO
SEO TETSUSHI
NONAKA YUSUKE
OSAWA NOBUHARU
SEO TETSUSHI
NONAKA YUSUKE
OSAWA NOBUHARU
Application Number:
JP2016013127A
Publication Date:
April 21, 2016
Filing Date:
January 27, 2016
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB CO LTD
International Classes:
H05B33/12; H01L51/50
Domestic Patent References:
| JP2012195517A | 2012-10-11 |
Foreign References:
| WO2012070233A1 | 2012-05-31 | |||
| WO2011042443A1 | 2011-04-14 |